Well it's been a while, but I'm finally working on another Suzuki rm125! Please SUBSCRIBE and LIKE the video if you enjoyed. It really helps me out a lot! Check out my Instagram: 2_vintage_ Thank you for the support!
If you press the crank, pie scribe both sides for alignment so its faster to reassemble for balance. (Pie scribe means 90% 90% 90% 90% lightly enough to see) so u can align close when re-pressed together. u have to make sure the weights aren't sheetmetal covered put a wedge between halfs but not on weights. You need a press a set of V-blocks and a dial indicator. With all the stuff I see u do its not to hard and cost effective $100 rod to a whole crank $650. O I almost forgot as bad as your rod is you have to cut pin off because you don't want scored area to get pressed through as it will groove the crank and make it junk. Most crank rebuilders use thin cut off wheel and cut through slit in bottom of rod all the way through pin. And press off pin halfs then
I would look for a crank through wiseco i saw one for a yz 125 on Amazon for 252.00 dollars right now and wiseco is a great brand never had any problems with them
It's like that here in Louisiana too. I just paid a grand for a 98 yz 250 that was blown. Used dirt bikes definitely aren't worth what people say they are!! Best bet is to just buy new!! Oh, and most of the bikes that have road rashed tires and blown motors are most likely stolen
I fuckin love you, man. You saved my ass. I bought a 2000 RM125. Tore it apart and found the exact same issue. Actually has more up and down play than yours… insane. I was looking for a step-by-step video since everyone else just seems to make cool edits that don’t help. I really appreciate your videos. You gave me the info and energy to go split the case just now cracked it up at 11pm. Hi from Alaska… thanks again!
I bought a 91 rm125. "engine needs rebuild". When you kicked it over, you could feel something grabbing. I pulled clutch cover off, one of the springs was stretched out and grabbing the case. Someone broke a bolt off on the inner stud, and put the spring back in without a bolt! I threw a set of yz springs in and was riding it 20 minutes after I brought it home. $90 bike, $0 fix. Sold it for a grand. But unlike you I washed it up really good, I use wheel cleaner, toilet brush and sos pads. Made it look great.
Great video man! I bought a 98 RM125 around 20 years ago and smoked the piston and cylinder after a short time and finally just started working on it last year. I got the cylinder re-plated and got a new piston, but never put it back together. Just got back to it again and forgot how all this stuff goes back together. lol. This video is exactly what I needed!
I feel lucky buying a 97 rm 125 that ran. Went from 60 plus kicks to 5 or less to start with cleaned carb and jets , new spark plug, and oil and coolant change. Just bought the bike in March so still have more to do but she runs. Good video boss
This was my first big 125.i took this one apart so many times I learned to trouble shoot two strokes from this bike. I rebuilt it from the ground up atleast 4 x in the 6 years I owned it I rode that bike very hard.sold it in the end wish I would have kept it.
My favorite bike I had when I was a kid was a mid 80s RM 125 bored 40 over jetted FMF pipe fast as hell very fun bike Yeah you got very lucky the piston didn't bind up once the bearing got smoked ✌️
I’ve used Mr.Crankshaft many times with great results. Just ship it out and get it back in less than a week. He has rod kits for just about anything. Cost around $180-200
My 98 RM 250 crank was good thankfully but the crank bearing on the stator side was toast. Don't make a crank and rod assembly for these years. Don't know why, could only find the con rod. Wierd. Love the videos man. These old used and abused bikes are a challenge but a good learning experience.🤘👍🇺🇸
My 98 RM 250 is a beast! I had the jug sent in to be re nickel silicon plated and I had a Suzuki powersports store do all the rebuild work. I saw the crank had heat marks on it and I asked them about it they said it was normal only to find out on the first ride after break-in that it was in fact not fine and the crank bottom end bearing took a dump. 😂 so I got a free rebuild from basically top to bottom after they finally found a bearing after like 6 months.
I have found when buying a bike one of the important things you should look at is the frame rails make sure that they are straight and not all dinged up
My brother's first bike was a used Suzuki 250 street scrambler. My brother stripped it down and re-assembled each part getting everything back into specification. When setting the rear wheel alignment, we went according to the ruler stamped onto the swing-arm. My brother takes it for a ride but comes back saying the bike is pulling to one side. When my brother rode straight away from me, it looked like the rear wheel was not inline with the front wheel. We tried ignoring the ruler on the swing-arm and it got the riding better or straighter. However, the rear wheel wasn't straight according to the swing-arm ruler. Something had to be up! Then one day, my brother had the gas tank and the saddle off and I was standing behind the bike. The large main "back" tube of the frame (under the tank) was skew relative to the rest of the seat frame! This damn bike had been in an accident! No wonder we couldn't get it to ride straight! So takeaway is: check to see all is straight before buying.
Four possiblities of rod failure: 1. Exceeding max RPM, 2. Overheating, 3. Improper oil/fuel mixture, 4. Dirt in the engine (could be from rebuild, or from letting dirt though the air filter).
my brother and I bought a blown up suzuki 90 It had oil injection and I think He never filled the tank with oil, He had a big bore kit in it. the cylinder was ok but the piston was too much money so for 4 bucks we bought a new stock piston and put the stock cylinder back on., a few weeks later the rod bearing went out. I think we had not been careful to clean everything up so the debris from before destroyed the crank bearing. we pedals our bikes across town to a guy who rebuilt the crank for us. I think we paid 50 bucks to have it rebuilt. that was 50 years ago, we have learned a lot since then. never stop learning. I have seen them done a number of times but have never rebuilt them myself. I have been thinking about trying it myself, I have learned a few things in the process and would like to know If I am capable. Is probably more difficult than I think it is, love he videos
Maybe 2 years ago you got that deal or even a year ago it's crazy what even 6 months can do to the Market but thankfully things are starting to chill out a little bit again🙂
The 1989 KX and RM had the 46mm conventional front forks and were exceptional. This RM also has conventional forks (95+96 only I think). Honda inverted of 1989 were junk (1990 Cr125).
I think if you find a local machine shop to do this for you, it would make good content to see if they would partner and let you film some of the process...
@@bobfred6769 because he's clueless and has absolutely no idea what he's doing. If you'd let him work on any of your toys you're an even bigger moron than he is
A tech tip get a piece of cardboard put holes in it put your bolts in the holes label them with a marker, you can even put them in a pattern like they come out of the bike and get them back in the right place. Makes it easy.
You mentioned something about crankshafts on one of your dirt bike videos. You have as a guy down here in Washington. State that does it for about a 150 bucks to 200 bucks. Depending on how bad the current is, he's a good motorcycle. Mechanics been doing it for years
So, it's been a few weeks...what's the story? Have you figured out the next step? Will you do a video to show putting it back together? We bought a 1994 RM125 for my son this summer and it had a few problems. We worked through some but I had to take it in for professional help. Great video!
When your marking for the timing, look into a "Automatic center punch" you can mark the location on both surfaces. You can clean everything and the punch marks will be deep enough to see and help during rebuild. The Snap-On dealer has them, the cheaper ones wear out and do not have the hardened tip like the Snap-On
@@mikespain8655 Automatic center punch is spring loaded and is done with one hand and doesn't mangle the work surface your marking, the hardened sharp tip leaves a small dimple.
For your info guys, these RM-125 around 1996 really didn't like being reved-up un-loaded (like winding the engine on the starting gate @ the races). I could explain what was the problem, but it's a long story. To make it short and sweet, the big end's bearing CAGE was too heavy , had less rolers then ideal and the bearing SLIPPED, and wiped the oil on the crank pin, making steel to steel contact :( . Just avoid reving the engine un-loaded as much as possible!.
I enjoyed this video, nice job. That rod looks like it got very hot. If you rebuild it it is well worth replaceing all the bearings saves having to go back into it.
I'm having a hard time believing this was rebuilt recently. The engine was filthy, the gaskets all tore up, RTV everywhere. I've had engines assembled for me using my newly bought parts and that alone was over $600. Just the labor, not the parts also.
Try Mr crankshaft. Good pricing. I have a 2002 kx125 and it will be my only option aswell because screw 600 bucks for a rebuilt and 150 dollar core. I bought an oem crank for my 98 cr125 for 180! Oh well we learn about part availability for suzuki and kawisakis the hard way
I don't know where you sent that crank off to but I bought the rod kit I got only costs $80 and the guy I let rebuild it only charged $200. I had the option of going to Independence County Off Road and rebuilding it myself for free there because they didn't want to charge me since they weren't a Suzuki dealer and didn't want to be liable for it. Which was really cool of them. But since I don't know how to true them I just took it to a guy here in town who rebuilds dirtbikes professionally. $200. I live in Batesville AR btw. I figured you'd wonder what Independence County Off Road was lol.
I bought a 96 RM125 out of a garden shed in horrible condition. Its coming along now as is looking awesome. Completed the roller which is now like new and about to get stuck into the engine.
Your dirt bike prices are insane over the pond. I just bought a really nice KFX 450 -2008 for about 1500 dollars. Also bought a KX250 -2004 with new a new cylinder and piston for 1200 dollars.
I would like to learn how to do crankshaft rebuilds and balance them too. i`m in Iowa so if a rebuild for a crank is around 600 bucks in your area and i don`t think the price is going to change much here in my area neither. i`m just starting to get into rebuilds also.
It's not that difficult, if ya look hard enough ya can find alignment jigs to keep the webbing concentric while ya press the crank together but they're friggin expencive.
22 mins in, your looking for a new crank shaft before you pulled it apart. You can have journals welded and oversized bearings. So pull everything apart, mic parts and see-if your outside of rebuilt specs before buying parts. The beginning trouble shooting was good though
Plus it presses apart and presses back together nothing like what you're talking about I have welded up EMD engines on a stand before so I do know what you're saying
i had a customes 2002 yz 125 eat 2 cranks before i was given the job , turned out to be a bad cdi unit that was firing to early in the stroke and wiping out the big end bearing on the crank pin first and only time i,ve had a cdi unit do this
Can't see how that engine has been rebuilt recently judging by the way it came apart and nobody does an engine rebuild that cheaply. Looks like the previous owner was taken for a ride. Forget ebay for crank rebuilds. You need an engineering shop that works on motorcycles. We have loads to chose from in UK so you must have the equivalent in US. Doubt it would cost $600 either. Top tip here is to use Suzuki crank parts for the rebuild not some cheap rubbish. And those O rings are the head gasket, they just seal the water jacket.
I used to have an rmx 250 man i loved that bike it had all the upgrades even a scots dampener should have never sold it and i really miss my 1990 cr500 but thats ok because i still have a mint condition 98 kx250 Chevy trucks bike plus the bike that was in rambo first blood the xt250 with 2 stroke sound lol😮😅
I bought my running rm 250 for 200 dollars knowing the top end was worn tried rebuilding it head gasket was leaking it destroyed the finish on the freshly rebuilt cylinder quick luckily it was a 85 so i bored it out and rode that next bore about 5 years almost daily depending on north east weather .back shocks go shock berrings ..that oil is filthy i change it every ride or 2 at most i put about 1000 into it and got 5 years out of it .very fast factory claims 54 hp. Best bike ever.good luck too bad you couldnt fit a 250 engine in it
What a great bike. I ridden these and they are such great handling bikes. I don't know anything about the Kawasaki. I actually got to race the first tm 125 right when it came out and it was such a great bike.
He did assemble the crank-shaft correctly, it was not ballanced and caused vibrations. Should be correctly assembled using a straight platform and DTI guage.
That blued spot is from someone the trued it before must've been rebuit. Most likely was lack of oil that caused it and or dirt threw air filter. Be a nice bike tho those were pretty sweet race bikes 🏁 your cylinder is in good shape and doesn't have a sleeve so tgats good
I like your videos. One suggestion if you can’t find a new casing gasket measure the old one with a micrometer and make a new one out of gasket paper. Also dry ice works the best for shrinking bearings, should be able to get some at a welding supply store. You could also put the casing in the oven at 150. Otherwise good job.
Words of wisdom from a metallurgy standpoint.....once you see blue or purple the heat treating or temper of the steel is GONE and toast. You have soft metal that can easily deform, bend, gouge or be scratched.
I’ve never seen a 125 that wasn’t clapped out, they live a rough life. Besides most don’t mix the oil right, when in doubt, foul it out. Plugs are way cheaper. I’d buy a new crank bro, you’ve already got it apart, just get a new one trust me.
Thats my motto! Especially with my cr85 big bore. The 85s rev to like 13,000rpm so its good to keep em nice and smokey! If I dont see smoke behind me, im pulling over and cooling it off to be on the safe side.
@@cxbra that’s retarded, two strokes shouldn’t smoke or at least smoke very minimally when at operating temps. If you always see smoke coming out the back somethings wrong
@@cxbra that’s why your bikes probably last a good while. I’ve never ridden one until it failed, as soon as it stared losing compression I knew it was top end time. I raced enduro so you have to keep your shit straight, try walking 30 mi out the woods, it’s like 100 mi on flat ground
@@jakebradley5357 2 stroke exhaust is 15% raw fuel and oil, they will always smoke. But yes, with the new synthetic oils they don’t smoke much. But if your riding and run out of fuel, I’d rather mix heavy vs light, that’s all I was saying, you can change plugs and keep going, you lean it out and blow it up your walking
@@deborahchesser7375 when you mix more oil into the fuel you’re actually running it leaner since the fuel is thicker it moves slower through the jets. When ur mixing more oil in you’re running a greater chance of blowing your motor up.
A sure sign of a blown head gasket: your oil looks like coolant and your coolant looks like oil. Nowadays you can get a $20 borescope off amazon and see before you buy it if the cylinder is trashed. 80's and 125's notorious for having their youthful owners run the piss out of them till the ring(s) is so thin the exhaust port swallows it.
This comment is a bit late (only watch it for the first time today), you're probably done and dusted with this bike by now, but do you think the crank pin wasn't replaced when the new rod and bearing were installed? And that's why the new bearing failed? As far as I'm aware, the bearing uses the crank pin (and the rod) as a race for the bearing. I've only had 4t cranks rebuild so it may be different for 2t, but the last crank rebuild kit I bought was a rod, big end bearing, and crank pin. Anyway, great work, loving the videos. :)
Paul X. Even better buy a press or make one with a hydraulic jack some steel and some welding, and buy a pair of dial indicators and a New rod. New crankbearings and youre good to go
That rm125 really nice for 96 an I think he the best one on RUclips I love his videos the way he talks about it then gets to work good attitude better then the other guys on here attitude just like mine good personality an good heart love the videos
92 through 97 are showing looking at my tech books, and it's showing the same kit in my shop manual. Need hard gasket, in my opinion. Those o rings are crap, they don't hold well sometimes, depends on buld material.
Honestly You shoot one of the best videos I wasn't even interested in your topic watched the whole thing My other hobby is Ham radio I wish half the guys on youtube shot it an explained things like you Great job
Wow, Ham radio is still active? My dad was ZS5JL and he used to speak to Russians, Americans and Japanese folks, all with only 150 watts of power. My dad also built his own radios as well.
Me and my 9 year are rebuilding a 2004 yz85 I got for free. I wish I could post some pictures of how bad the motor was. It sat 16 years outside with the top end off so the crank was as rusted as it could get and loaded with mud dauber nests. My 9 year old totally rebuilt the bottom end with oem parts including crank. He had the biggest grin when it fired 1st kick. We have put about 1700 in it and it looks brand new but if not for the experience of doing with my son I probably wouldn't have put that much loot in a 2004.
Its not that hard to press a crank apart get a press from harbor freight. Pick up a steel plate that will fit between the two hafts before you press pin out make a linement lines on 3 side it will help with reassemble. Throw pin in freezer an 2 hafts in oven. Get your plate thats fit between hafts .press the pin in .the plate well keep the rod bearing from getting Smashed.cut 2 pieces of wood put outer bearing on crank cut v into wood set crank in v turn use dial indicator to check runout
Same thing happened to my cr125, I was riding it around my block then it went boom and shut off. It started back up a few hours later and was making some weird noises so I pulled the motor and found out I smoked the crank
Send it to Eric Gorr. I paid $200 total for him to rebuild my '89 cr250 crank. I sent him the ProX rod and big end bearing ($120) and he charged $80 for labor and shipping back to NY. I'm surprised you've never mentioned him before. He's only the hands down best 2T man on the planet. Wisconsinite as well.
You can send it off to deniss kirk! They do a great job and they do it right!! Other than that you should trust to do it yourself, get a hydraulic press and some ice/dry ice
Your gonna find some neat things in there. Broken crank, broken piston? See that stuff now and again. I prefer the 80s RMs to 90s seem tougher. But it's a beautiful bike. Hoping for the best on that... good job.
for $600, its not exactly a loss if it doesn't run. a full rebuild is probably gonna be an additional $600 - $800 considering what we have here for way more that's a steal.
I used to own a 1981 YM125. It was first year that liquid cooling was introduced. I remember I paid $1295 new for it and I had to take out a loan then 😂😅
had friends in high school that would do this stuff all the time...back in the mid to late 70's, and just wondering how the hell they got all their knowledge without the internet.
My husband, Sam, a retired KY coalminer and mechanic, views all your videos. He suggests that you check out videos by Salvage Workshop. Sam believes that SW is in your region, and he has milling and machining equipment.
Well it's been a while, but I'm finally working on another Suzuki rm125!
Please SUBSCRIBE and LIKE the video if you enjoyed. It really helps me out a lot!
Check out my Instagram: 2_vintage_
Thank you for the support!
If you press the crank, pie scribe both sides for alignment so its faster to reassemble for balance. (Pie scribe means 90% 90% 90% 90% lightly enough to see) so u can align close when re-pressed together. u have to make sure the weights aren't sheetmetal covered put a wedge between halfs but not on weights. You need a press a set of V-blocks and a dial indicator. With all the stuff I see u do its not to hard and cost effective $100 rod to a whole crank $650. O I almost forgot as bad as your rod is you have to cut pin off because you don't want scored area to get pressed through as it will groove the crank and make it junk. Most crank rebuilders use thin cut off wheel and cut through slit in bottom of rod all the way through pin. And press off pin halfs then
Can you do a 1998 rm250 next?
Ooooo I have a 1996 Rm125 too!😃
Am a
I would look for a crank through wiseco i saw one for a yz 125 on Amazon for 252.00 dollars right now and wiseco is a great brand never had any problems with them
to be honest he gets good deals. people here in New York want 1k-1,600k for a bike that wont run and its missing a whole engine.
Facts my g shii out here in Vegas same shii hella bro nigga mad lucky shii 💯
@@ytterrorlit6389 i lost 40 brain cells reading ur comment
It's like that here in Louisiana too. I just paid a grand for a 98 yz 250 that was blown. Used dirt bikes definitely aren't worth what people say they are!! Best bet is to just buy new!! Oh, and most of the bikes that have road rashed tires and blown motors are most likely stolen
Missing engine or stolen😂
Yeah right same. Its like snobby rich kids who know nothing about dirt bikes so they sell their neglected broken one for way to much.
I fuckin love you, man. You saved my ass. I bought a 2000 RM125. Tore it apart and found the exact same issue. Actually has more up and down play than yours… insane. I was looking for a step-by-step video since everyone else just seems to make cool edits that don’t help. I really appreciate your videos. You gave me the info and energy to go split the case just now cracked it up at 11pm. Hi from Alaska… thanks again!
Those 2000s are fiends for snapping power valves and destroying the pistons. Had a 99 and had the same issue. Keep them clean and use good oil.
They are known to do bottom ends too. We had more luck with the hotrod complete cranks.
Cameron Nimela's youtube has great videos on his cr250 rebuild, watch those paired with a repair manual and you got it
Did you get her back running?
@@AAAskeet oh she’s a ripper
I bought a 91 rm125. "engine needs rebuild". When you kicked it over, you could feel something grabbing. I pulled clutch cover off, one of the springs was stretched out and grabbing the case. Someone broke a bolt off on the inner stud, and put the spring back in without a bolt! I threw a set of yz springs in and was riding it 20 minutes after I brought it home. $90 bike, $0 fix. Sold it for a grand.
But unlike you I washed it up really good, I use wheel cleaner, toilet brush and sos pads. Made it look great.
Every craigslist seller:
Just needs the carb cleaned!
Reality:
Needs a $650 crank.....
Lol
Me and my dad been buying bikes since the early 90s. We're up to almost 80 with everything from the late 60s to the 2000s. Keep it up man
Great video man! I bought a 98 RM125 around 20 years ago and smoked the piston and cylinder after a short time and finally just started working on it last year. I got the cylinder re-plated and got a new piston, but never put it back together. Just got back to it again and forgot how all this stuff goes back together. lol. This video is exactly what I needed!
The amount of stuff I learned from these videos is insane, thanks for all of the help👍
Another mustie1 and 2vintage upload day? My prayers have been answered
My top 2 also!
No mine is sunday ritual of mustie .vintage.and catherine gregory nomad adventures.l0l.
yesir colbeer and some tinkering
Yessss
+1
I feel lucky buying a 97 rm 125 that ran. Went from 60 plus kicks to 5 or less to start with cleaned carb and jets , new spark plug, and oil and coolant change. Just bought the bike in March so still have more to do but she runs. Good video boss
I respect you for just getting in there and doing it. I am still a little shy of splitting a case.
This was my first big 125.i took this one apart so many times I learned to trouble shoot two strokes from this bike. I rebuilt it from the ground up atleast 4 x in the 6 years I owned it I rode that bike very hard.sold it in the end wish I would have kept it.
I think the same way about every bike I ever owned now that I have not ridden in 30 years.
I’ve just replaced the rod in the past and brought to crank to a good machine shop and had them install and balance it for me.
If you supply a new rod and bearing a local machine should be able to press out the crank pin and install the new rod and bearing, then balance it
Ha ha , I didn't read 🤪
My favorite bike I had when I was a kid was a mid 80s RM 125 bored 40 over jetted FMF pipe fast as hell very fun bike Yeah you got very lucky the piston didn't bind up once the bearing got smoked ✌️
Awesome video. To bad it wasn’t a easy fix but that’s the gamble we take on used bikes.
Love the content. I learn more watching your videos that 3 years of auto mechanic in highschool.
I’ve used Mr.Crankshaft many times with great results. Just ship it out and get it back in less than a week. He has rod kits for just about anything. Cost around $180-200
My 98 RM 250 crank was good thankfully but the crank bearing on the stator side was toast. Don't make a crank and rod assembly for these years. Don't know why, could only find the con rod. Wierd. Love the videos man. These old used and abused bikes are a challenge but a good learning experience.🤘👍🇺🇸
My 98 RM 250 is a beast! I had the jug sent in to be re nickel silicon plated and I had a Suzuki powersports store do all the rebuild work. I saw the crank had heat marks on it and I asked them about it they said it was normal only to find out on the first ride after break-in that it was in fact not fine and the crank bottom end bearing took a dump. 😂 so I got a free rebuild from basically top to bottom after they finally found a bearing after like 6 months.
I have found when buying a bike one of the important things you should look at is the frame rails make sure that they are straight and not all dinged up
My brother's first bike was a used Suzuki 250 street scrambler. My brother stripped it down and re-assembled each part getting everything back into specification. When setting the rear wheel alignment, we went according to the ruler stamped onto the swing-arm. My brother takes it for a ride but comes back saying the bike is pulling to one side. When my brother rode straight away from me, it looked like the rear wheel was not inline with the front wheel. We tried ignoring the ruler on the swing-arm and it got the riding better or straighter. However, the rear wheel wasn't straight according to the swing-arm ruler. Something had to be up!
Then one day, my brother had the gas tank and the saddle off and I was standing behind the bike. The large main "back" tube of the frame (under the tank) was skew relative to the rest of the seat frame! This damn bike had been in an accident! No wonder we couldn't get it to ride straight!
So takeaway is: check to see all is straight before buying.
Four possiblities of rod failure: 1. Exceeding max RPM, 2. Overheating, 3. Improper oil/fuel mixture, 4. Dirt in the engine (could be from rebuild, or from letting dirt though the air filter).
That makes too much sense for most of these guys.
Before the crank is apart make sure you check specks really well.. that will help narrow it down and where it is failing at.
my brother and I bought a blown up suzuki 90 It had oil injection and I think He never filled the tank with oil, He had a big bore kit in it. the cylinder was ok but the piston was too much money so for 4 bucks we bought a new stock piston and put the stock cylinder back on., a few weeks later the rod bearing went out. I think we had not been careful to clean everything up so the debris from before destroyed the crank bearing. we pedals our bikes across town to a guy who rebuilt the crank for us. I think we paid 50 bucks to have it rebuilt. that was 50 years ago, we have learned a lot since then. never stop learning. I have seen them done a number of times but have never rebuilt them myself. I have been thinking about trying it myself, I have learned a few things in the process and would like to know If I am capable. Is probably more difficult than I think it is, love he videos
Joe doesn't care about dirt he's the god of dirt
I only paid $200 for my 1989 KX 125 And all they needed was a carb clean and she ran but keep looking out for good deals they show up quick
Wow crazy good deal!
Maybe 2 years ago you got that deal or even a year ago it's crazy what even 6 months can do to the Market but thankfully things are starting to chill out a little bit again🙂
The 1989 KX and RM had the 46mm conventional front forks and were exceptional. This RM also has conventional forks (95+96 only I think). Honda inverted of 1989 were junk (1990 Cr125).
Right at the start I thought it was the “Big end Bearing”. I’m not a mechanic but good to know I was right.
I think if you find a local machine shop to do this for you, it would make good content to see if they would partner and let you film some of the process...
Why not start his own business fixing machines
@@bobfred6769 because he's clueless and has absolutely no idea what he's doing. If you'd let him work on any of your toys you're an eve
@@bobfred6769 because he's clueless and has absolutely no idea what he's doing. If you'd let him work on any of your toys you're an even bigger moron than he is
Machine shops are to expensive to fix things.
@@shaynedonnelly374 - then why are you here?
I'm currently restoring my 1996 yz125, great bikes ! Keep up the good work
A tech tip get a piece of cardboard put holes in it put your bolts in the holes label them with a marker, you can even put them in a pattern like they come out of the bike and get them back in the right place. Makes it easy.
Finally back to the proper crossers
You mentioned something about crankshafts on one of your dirt bike videos. You have as a guy down here in Washington. State that does it for about a 150 bucks to 200 bucks. Depending on how bad the current is, he's a good motorcycle. Mechanics been doing it for years
Netflix: Are you still watching
Someone's Daughter: 11:30
Try Eric Gorr Racing for the crank rebuild.
So, it's been a few weeks...what's the story? Have you figured out the next step? Will you do a video to show putting it back together?
We bought a 1994 RM125 for my son this summer and it had a few problems. We worked through some but I had to take it in for professional help. Great video!
Yep the crank is being rebuilt right now. Shoukd have it back next week sometime. Will make a video of rebuilding it.
When your marking for the timing, look into a "Automatic center punch" you can mark the location on both surfaces. You can clean everything and the punch marks will be deep enough to see and help during rebuild. The Snap-On dealer has them, the cheaper ones wear out and do not have the hardened tip like the Snap-On
Yea bc ignition timing is so difficult 🤦♂️
And because taking a punch and a hammer is too "manual".
@@mikespain8655 Automatic center punch is spring loaded and is done with one hand and doesn't mangle the work surface your marking, the hardened sharp tip leaves a small dimple.
Or you could Just $$ Pay someone else to do it!! Lol
great videos! really educational, cus im trying to learn everything about building bikes
I lusted after the RM125 as a school kid. Lovely machine. I wonder if the bottom end bearing was tight (side to side) and that caused it to overheat.
Ken O’Connor Racing $170 to rebuild plus $30 to $35 for return shipping with insurance
Thank you!
For your info guys, these RM-125 around 1996 really didn't like being reved-up un-loaded (like winding the engine on the starting gate @ the races). I could explain what was the problem, but it's a long story. To make it short and sweet, the big end's bearing CAGE was too heavy , had less rolers then ideal and the bearing SLIPPED, and wiped the oil on the crank pin, making steel to steel contact :( . Just avoid reving the engine un-loaded as much as possible!.
Its not really good for any bike to be revved while not under load
@@samuelbaudoux3312 Especially four stroke morons revving to the rev limiter and holding it there like total Dolts
by un-loaded revving you mean holding the clutch in and revving the engine?
@@anglegrinderlover994 or having it in neutral
@@anglegrinderlover994 Yep or in neutral. Nooot good on engines :(....
I enjoyed this video, nice job. That rod looks like it got very hot. If you rebuild it it is well worth replaceing all the bearings saves having to go back into it.
I'm having a hard time believing this was rebuilt recently. The engine was filthy, the gaskets all tore up, RTV everywhere. I've had engines assembled for me using my newly bought parts and that alone was over $600. Just the labor, not the parts also.
No possible way this was rebuilt at any point.
@@Livi_333maybe not rebuilt but anytime you see our r TV it was a part😮
Congrats on your newest acquisition, i have one of these, mine needs a clutch, basket is chunky, but they are pricey. Thanks 2vintage
Try Mr crankshaft. Good pricing. I have a 2002 kx125 and it will be my only option aswell because screw 600 bucks for a rebuilt and 150 dollar core. I bought an oem crank for my 98 cr125 for 180! Oh well we learn about part availability for suzuki and kawisakis the hard way
I don't know where you sent that crank off to but I bought the rod kit I got only costs $80 and the guy I let rebuild it only charged $200. I had the option of going to Independence County Off Road and rebuilding it myself for free there because they didn't want to charge me since they weren't a Suzuki dealer and didn't want to be liable for it. Which was really cool of them. But since I don't know how to true them I just took it to a guy here in town who rebuilds dirtbikes professionally. $200. I live in Batesville AR btw. I figured you'd wonder what Independence County Off Road was lol.
Almost always bottom bolt on those water pump drains. Usually there is crush washer.
I bought a 96 RM125 out of a garden shed in horrible condition. Its coming along now as is looking awesome. Completed the roller which is now like new and about to get stuck into the engine.
Your dirt bike prices are insane over the pond. I just bought a really nice KFX 450 -2008 for about 1500 dollars. Also bought a KX250 -2004 with new a new cylinder and piston for 1200 dollars.
I would like to learn how to do crankshaft rebuilds and balance them too. i`m in Iowa so if a rebuild for a crank is around 600 bucks in your area and i don`t think the price is going to change much here in my area neither. i`m just starting to get into rebuilds also.
It's not that difficult, if ya look hard enough ya can find alignment jigs to keep the webbing concentric while ya press the crank together but they're friggin expencive.
These older bikes are tougher and better looking. This one’s sweet😱😱😱😱😱😱😱😱😱💯💯💯💯
22 mins in, your looking for a new crank shaft before you pulled it apart. You can have journals welded and oversized bearings. So pull everything apart, mic parts and see-if your outside of rebuilt specs before buying parts. The beginning trouble shooting was good though
That engine has a roller bearing it's not a shell bearing crankshaft😢
Plus it presses apart and presses back together nothing like what you're talking about I have welded up EMD engines on a stand before so I do know what you're saying
My guess would be a new rod bearing on a worn crank pin made it go boom. Just a guess.
I love how this is like 2016 videos gives me nostalgic keep up the hard work got yourself a new subscriber
Being a Suzuki my thought would be it would run and be easy to work on! If it were a KTM, there could be difficulties.
Greetings from Belgium!
i had a customes 2002 yz 125 eat 2 cranks before i was given the job , turned out to be a bad cdi unit that was firing to early in the stroke and wiping out the big end bearing on the crank pin
first and only time i,ve had a cdi unit do this
Can't see how that engine has been rebuilt recently judging by the way it came apart and nobody does an engine rebuild that cheaply. Looks like the previous owner was taken for a ride. Forget ebay for crank rebuilds. You need an engineering shop that works on motorcycles. We have loads to chose from in UK so you must have the equivalent in US. Doubt it would cost $600 either. Top tip here is to use Suzuki crank parts for the rebuild not some cheap rubbish. And those O rings are the head gasket, they just seal the water jacket.
I used to have an rmx 250 man i loved that bike it had all the upgrades even a scots dampener should have never sold it and i really miss my 1990 cr500 but thats ok because i still have a mint condition 98 kx250 Chevy trucks bike plus the bike that was in rambo first blood the xt250 with 2 stroke sound lol😮😅
I bought my running rm 250 for 200 dollars knowing the top end was worn tried rebuilding it head gasket was leaking it destroyed the finish on the freshly rebuilt cylinder quick luckily it was a 85 so i bored it out and rode that next bore about 5 years almost daily depending on north east weather .back shocks go shock berrings ..that oil is filthy i change it every ride or 2 at most i put about 1000 into it and got 5 years out of it .very fast factory claims 54 hp. Best bike ever.good luck too bad you couldnt fit a 250 engine in it
It blows my mind that you paid $600. Small town in Ontario Canada, the cheapest RM125 93-99 is $3000 and up.
I know right I have been looking for a rm 125 to match my dads rm 250 but i ended up getting a kx 125
What a great bike. I ridden these and they are such great handling bikes. I don't know anything about the Kawasaki. I actually got to race the first tm 125 right when it came out and it was such a great bike.
@@cassiuswright198 I have an rm125 1997 whats the asking price ?
Awesome this is the model i used to race back when i was 16
He did assemble the crank-shaft correctly, it was not ballanced and caused vibrations. Should be correctly assembled using a straight platform and DTI guage.
That blued spot is from someone the trued it before must've been rebuit. Most likely was lack of oil that caused it and or dirt threw air filter. Be a nice bike tho those were pretty sweet race bikes 🏁 your cylinder is in good shape and doesn't have a sleeve so tgats good
new crank set (aftermarket) is max 300 euros here, and a new rod kit about 60. these were the first prices of known-brand names i found here
I like your videos. One suggestion if you can’t find a new casing gasket measure the old one with a micrometer and make a new one out of gasket paper. Also dry ice works the best for shrinking bearings, should be able to get some at a welding supply store. You could also put the casing in the oven at 150. Otherwise good job.
There’s either a ‘96 or ‘97 that I can get super cheap off one of my dads buddies. I hope it’s as clean as the one shown here! Good luck on it.
ANOTHER GREAT EDUCATIONAL VIDEO! FOR A 96' IT DOES LOOK PRETTY NICE. I AM STILL A 2 STROKE DIEHARD LOVER. I LOVE MY 2002 KX 125.
Words of wisdom from a metallurgy standpoint.....once you see blue or purple the heat treating or temper of the steel is GONE and toast. You have soft metal that can easily deform, bend, gouge or be scratched.
I’ve never seen a 125 that wasn’t clapped out, they live a rough life. Besides most don’t mix the oil right, when in doubt, foul it out. Plugs are way cheaper. I’d buy a new crank bro, you’ve already got it apart, just get a new one trust me.
Thats my motto! Especially with my cr85 big bore. The 85s rev to like 13,000rpm so its good to keep em nice and smokey! If I dont see smoke behind me, im pulling over and cooling it off to be on the safe side.
@@cxbra that’s retarded, two strokes shouldn’t smoke or at least smoke very minimally when at operating temps. If you always see smoke coming out the back somethings wrong
@@cxbra that’s why your bikes probably last a good while. I’ve never ridden one until it failed, as soon as it stared losing compression I knew it was top end time. I raced enduro so you have to keep your shit straight, try walking 30 mi out the woods, it’s like 100 mi on flat ground
@@jakebradley5357 2 stroke exhaust is 15% raw fuel and oil, they will always smoke. But yes, with the new synthetic oils they don’t smoke much. But if your riding and run out of fuel, I’d rather mix heavy vs light, that’s all I was saying, you can change plugs and keep going, you lean it out and blow it up your walking
@@deborahchesser7375 when you mix more oil into the fuel you’re actually running it leaner since the fuel is thicker it moves slower through the jets. When ur mixing more oil in you’re running a greater chance of blowing your motor up.
I have my fingers crossed for this ole Suzuki. good luck & plz keep us posted on her progress
I do the same stuff you do buy a press and do it in ur garage I've installed alot of rods and have always had good luck..
A sure sign of a blown head gasket: your oil looks like coolant and your coolant looks like oil. Nowadays you can get a $20 borescope off amazon and see before you buy it if the cylinder is trashed. 80's and 125's notorious for having their youthful owners run the piss out of them till the ring(s) is so thin the exhaust port swallows it.
This comment is a bit late (only watch it for the first time today), you're probably done and dusted with this bike by now, but do you think the crank pin wasn't replaced when the new rod and bearing were installed? And that's why the new bearing failed? As far as I'm aware, the bearing uses the crank pin (and the rod) as a race for the bearing. I've only had 4t cranks rebuild so it may be different for 2t, but the last crank rebuild kit I bought was a rod, big end bearing, and crank pin. Anyway, great work, loving the videos. :)
Paul X. Even better buy a press or make one with a hydraulic jack some steel and some welding, and buy a pair of dial indicators and a New rod. New crankbearings and youre good to go
That rm125 really nice for 96 an I think he the best one on RUclips I love his videos the way he talks about it then gets to work good attitude better then the other guys on here attitude just like mine good personality an good heart love the videos
92 through 97 are showing looking at my tech books, and it's showing the same kit in my shop manual. Need hard gasket, in my opinion. Those o rings are crap, they don't hold well sometimes, depends on buld material.
Honestly You shoot one of the best videos I wasn't even interested in your topic watched the whole thing My other hobby is Ham radio I wish half the guys on youtube shot it an explained things like you Great job
Thank you!
Wow, Ham radio is still active? My dad was ZS5JL and he used to speak to Russians, Americans and Japanese folks, all with only 150 watts of power. My dad also built his own radios as well.
The heat mark is probably due to the previous repair .torch to expand to extract pin ,use freezer on pin before installed
You can run a wiseco crank, it will be better than the oem version and cheaper. If you can't find one online you can call them directly
Me and my 9 year are rebuilding a 2004 yz85 I got for free. I wish I could post some pictures of how bad the motor was. It sat 16 years outside with the top end off so the crank was as rusted as it could get and loaded with mud dauber nests. My 9 year old totally rebuilt the bottom end with oem parts including crank. He had the biggest grin when it fired 1st kick. We have put about 1700 in it and it looks brand new but if not for the experience of doing with my son I probably wouldn't have put that much loot in a 2004.
Rod kit comes with a pin, rod, both bearings. 60-80$ a shop to do it should be 100, or 125 to be welded.
DeCoster had a ton of input in the design of the Suzuki which is why KTM reminds me so much of them
It must drive you crazy when sellers lie to you. Good luck. I'll keep my fingers crossed for ya on the crank rebuild
Every person says just rebuilt lol it's sad
Make sure you use the correct spark plug on Suzukis. Using wrong plug can cause serious damage
Its not that hard to press a crank apart get a press from harbor freight. Pick up a steel plate that will fit between the two hafts before you press pin out make a linement lines on 3 side it will help with reassemble. Throw pin in freezer an 2 hafts in oven. Get your plate thats fit between hafts .press the pin in .the plate well keep the rod bearing from getting Smashed.cut 2 pieces of wood put outer bearing on crank cut v into wood set crank in v turn use dial indicator to check runout
The same dude that rebuilt it should suffice. Seriously, tell him to up his game and to guarantee his work. Win, win!!
Same thing happened to my cr125, I was riding it around my block then it went boom and shut off. It started back up a few hours later and was making some weird noises so I pulled the motor and found out I smoked the crank
Send it to Eric Gorr. I paid $200 total for him to rebuild my '89 cr250 crank. I sent him the ProX rod and big end bearing ($120) and he charged $80 for labor and shipping back to NY. I'm surprised you've never mentioned him before. He's only the hands down best 2T man on the planet. Wisconsinite as well.
Correct
You can send it off to deniss kirk! They do a great job and they do it right!! Other than that you should trust to do it yourself, get a hydraulic press and some ice/dry ice
Your gonna find some neat things in there. Broken crank, broken piston? See that stuff now and again. I prefer the 80s RMs to 90s seem tougher. But it's a beautiful bike. Hoping for the best on that... good job.
for $600, its not exactly a loss if it doesn't run. a full rebuild is probably gonna be an additional $600 - $800 considering what we have here for way more that's a steal.
I used to own a 1981 YM125. It was first year that liquid cooling was introduced. I remember I paid $1295 new for it and I had to take out a loan then 😂😅
Looking forward to reassembly
had friends in high school that would do this stuff all the time...back in the mid to late 70's, and just wondering how the hell they got all their knowledge without the internet.
Cranks works are located in Arizona give them a shot mite as well do the bearings too if you can hopefully this helps
Since this has now happened twice it makes me think the guy you bought it from is mixing his premix wrong and that rod bearing is starving for oil.
You are a great inspiration now I just need to find the right bike.
buy a wrench rabbit kit comes with everything for the bottom end if they make it for that bike
90s Rm125 are really nice looking.
You could always get a job as a mechanic in India those guys like to work on the floor as well.
My husband, Sam, a retired KY coalminer and mechanic, views all your videos. He suggests that you check out videos by Salvage Workshop. Sam believes that SW is in your region, and he has milling and machining equipment.
Good stuff man, thank you for sharing... Love all your videos.
Mr.crankshaft, he rebuilt the crank in my 94 250sx for the connecting rod for like 200