BIG BORE kit installed (secrets revealed) - Second Stroke Mopeds
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- Опубликовано: 23 авг 2024
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I appreciate your videos. Sometimes go to Fort Myers on vacation cycle up the West Coast. But I live in Ohio. Nice job at the end, putting it in a lathe and angling it down.
Nice work.
For extra credit, you can CC the combustion chamber to give you a firmer idea of the volume. It might be interesting to know the cylinder pressure, too.
It might be nice to make a thin stainless template to check the heads to make sure the reliefs are all the same, without guesswork, kind of a go-nogo gauge.
That is one huge advantage of mopeds over scooters. So damn easy to get to everything! Takes me longer to remove the plastics on my TGB to even get to the head than it does to replace a piston or put a big bore kit on. Had to actually remove the motor/cvt on a China scooter to put a bbk on it. Giant pain in the ass!
I hear ya, with mopeds all out in the open I can never understand when someone complains about working on one. Sooo easy in comparison!
Thanks for the tutorial. The Spanish "Malossi" ... Metrakit. Seen quite a few impressive bikes running MetraKit. Why do you think that they started in Spain, developed their brand largely appealing to Spanish pride and patriotism, then pulled up stumps and moved most of their production to Italy?
Not sure... we were just talking about this yesterday, the number of mergers and changing of hands in the motorbike industry. It has happened quite often. Seemingly for different reasons, but common all the same.
Thanks Pete! I need that kit for my Puch Newort 2! I MOVED TO Cape Cod. Bring your mechanic, I have 2 peds to modify.
thanks,pete.
Just fooling around with you bro you guys rock but I will still like to do a puch moped build off. Let’s set it up
Interesting... where are you located??
@@MopedProblems I’m from the Bronx ny and I also have a place in Bergenfield nj
@@MopedProblems I’m sure we have met before and I think I sold you guys some mopeds before and I know you know my buddy the guru chris at moped warehouse
I'd love to see it!
Part of me was hopeful he would pick the bike up and put it on the table
the music got me
Got to you, or got you grovin 😵💫
Hi quality video great job pete
You need also a Bing 15 ml carb and a Bos demper for lower resistance a top speed, changing sprockets. Then you talk about speed of about 75 km. Also nice to try is a Malossi or Polini cylinder.If you son't want to modify your cylibder head, you can also use an extra gasket to prevent damage piston on your cylinder head. It will lower the comoression a little bit, but better safe then sorry.....
This was my experience more than 40 years ago...... For a automatic mooed, as fast as hell.
I love Mopeds. Salute
This kit looks well installed, I would love to get the polini 80cc kit for my general 5 star v1 after the good guys at second stroke get her running. Not sure if I need to get a new head with the 80cc kit or if I could use the stock head.
The polini 80cc is the best kit for Minarelli motors. Top top top!!! Huge improvement over the stock cylinder... especially when matched with a good performance pipe
There are performance heads available, but we usually modify the stock one in the lathe to match better. Similar to the video
Oh yeah yeah
Is the part with the lathe strictly necessary? I wanna power up my Honda NX50M (if that makes a difference) but I don't have a lathe and don't know someone who does.
Sometimes they sell kits with heads on them. Already cut for the squish band. Is that available for your engine?
Спасибо чувак. Твои видео лучшие! Делай дальше!!!
I'm from Brazil where I can get a 70cc kit from this one to buy.parabens for the work done, thank you already
Not sure bud, they are here in America, but you’ll have to see if anyone ships internationally 🤔
@@MopedProblems thank you but need phone,adress or contact.
So i have a couple tomos...tomoses...tomai..however it's said, both giving me problems. I see others asking questions and read pages and pages of threads but its a lot to take in. I need to figure these out! I feel like they both should run. I've rode both now, one about 300 miles, the other like 3 miles. Really bummed out.
There’s a lot to investigate. In general if a bike has good spark, compression and fuel/air flow it should work. But there are things outside of this that can throw you off, like bad seals or air leaks. One of these days I should set up a Patreon for Moped coaching out of NYC
I got it ....tossed the exhaust in the fire pit... Runs great!
Is that Crazy Wayne's 13 port kit?
Yeah we all have machine shops in our basement. That lathe shit is pointless. I will challenge you to a
Puch build off any day
Mrpop4ever!!! Moped warehouse
Nice video mr second stroke
I’m gonna call me first stroke lol lol
What is the gas/oil ratio on TOMOS, what does the factory call for mixing ratio.
In the late 70s and early 80s Puch was the top brand. What happened to them?
I don’t know the whole story but I know they were bought by a company called HERO. They kept it up for a few years but are totally gone now.
sold to piaggio
Nice video
Thank you for these videos! I was wondering if you know of any 70cc kits for morini m1 engines, all i can find are a couple 60cc kits on treatland and very expensive but would probably be more reliable
The Moroni options are all over the place. There is a change in the cases somewhere in the early 80’s... and depending on which engine you have the kits available may or may not fit easily (the cylinder skirt doesn’t clear)
Nice video, but you are pobably distorting the cylinder with that allen plugg so close to the bore, so be very careful with tighten of that plug.
It’s been a standard move at the shop. We’ve done it a hundred times at least. Never been a problem.
Hello again. Where can I find those exhaust studs? I don’t think my local hardware store would carry them.
Send me an email: mopedproblems@gmail.com
6:10 bro all 2 stroke have that kind of head squish design, it could change a bit from bike to bike
This is for the cylinder upgrade 50cc to 64cc. Got to add that ramp to avoid detonation.
I get that
I got 3 mopeds and 1 is 65cc head got cut alot for higher compression and getting 12psi no problem working 2 years now
Looks from here like you are eyeballing the squish clearance! What number were you aiming for. Turning the motor over & hearing no contact is no guarantee of dynamic clearance when the rod and wrist pin stretch in operation. Too generous squish clearance will degrade the speed at which unburnt fuel/air mixture is pumped in, to feed the flame front and scavenge the cylinder in the ex cycle.
We shoot for .7-.9mm squish. Measured by solder. When customers do kit installation themselves, they often skip this step... which i agree is a bad idea.
What was the tool you threaded in the head to chuck it up in the lathe? Thanks!!!
I use a spark plug thread chaser... not exactly the right use of the tool, but I’ve been able to quickly square up a head in the lathe this way.
What if I don’t have a lathe . Do the sell a new head for the 70 cc
What is the problem in tomos Flexer 2006. After firing Tomos comes moments and goes out. I checked the spark is.
If I pour 30 ml into the tank, it works until it burns the 1: 50 mixture. And if you pour the full tank it goes out after firing, which can be the reason?
I have a automatic and apn 6. Im from slovenija
I had a Puch Newport with a Polini 64 kit on it, snagged rings and busted like 3 pistons with that thing. Idk if I'm just dumb or if that kit is just super finicky to tune.. It always seized when rolling off the throttle after holding wide open for a bit. I was always nervous riding that moped, it was damn fast tho, and now I regret selling it.
It’s true, the Polini kit was always a powerful but delicate option. I’ve heard many theories to why they fail. But getting down to it, the Metra 64 (kit I am recommending in the vid) just doesn’t have those problems.
@@MopedProblems yeah from my experience it always caught the ring in the exhaust port on the upstroke and broke it along with a part of the piston head. I recall people saying it may be due to the cold intake and hot exhaust gases deforming the aluminum cylinder, leading to the ring being pushed out into the fairly large exhaust port. Could also be due to imperfect timing, but who knows.. I just know that I didn't have enough money to figure it out! Lol.
How fast will a 70cc big bore kit do on a 50cc 2 stroke rough house? U don't see any videos on the rough house extras which I plan on doing??
Thanks.
Big Bubba
Big bubba, this is the Addly Rough House? Should be just as straight forward was any 2 stroke scooter. I would expect 10 mph faster with more launch on the way. Always best accompanied with a exhaust pipe and variator tuning
Nice job... you just lowered your compression ratio by lathing it that way resulting in loss of power.
We like to call it avoiding detonation.
@@MopedProblems what? Dude The ratio is nowhere near The risk of even pinging... 🤦♂️
@@Kokaiinum1 this is a static points ignition, it can ping easily. Also, why have a squish band at all… why not a flat head with a spark plug in the middle? …give it a try, maximum compression! Let me know how it goes.
Help i have a 78 rizzato califfo 119 egg motor is there an upgrade to increase cc like a bigger jug aftermarket
Where do you get your kits from. Thank you
Would this work on a tomos lx?
This kit would, but there would need to be modifications to the intake and exhaust.... Probably not worth it since there are other kits that bolt onto a TOMOS perfectly.
E man can you make more of these type of vids i really like them
Actually that’s the plan in the couple of weeks!
Nice looking foward to it
u need to put a 94 bidalot in a derbi senda in finland we call that "laiska paska"
This seems to be the best place to ask.
Is there an interchangeable mag type wheel for a Honda Express?
My NC50 is awesome but it bent the spokes on the back wheel and I'd like to swap to a mag style if possible.
You thought so...just sayin'
Just watched your video, very interesting. I have a 2001 kinetic moped with an engine that’s just about dead, I would like to make it go faster any recommendations? I believe it has a 49cc now but I’m not 100% sure. Any help would be appreciated!
Kinetic can be tough but they are clones of the old school Vespa Mopeds, which had a ton of speed mods. The vespas had a dual variated transmission that helped for overall pickup and speed... the kinetics do not have this... it would be cool to see Vespa parts switched over to the kinetic
What's the difference between the 25kmh and 50kmh tomos engines? Is it just lower comp head and smaller carb?
We never got the slower bikes in the States, but I have seen them. Different cylinders. Definitely restricted overall and different sprockets
The 25 km/h has lower compression (achieved by thicker gasket - it drops compression to 6:1 or something similar) and it uses 12 mm dellorto carb (45 km/h uses 14 mm version)
Hey man turn the volume down on the music so we can better understand what your saying!
Wish I could. Our editing skills get better in latter videos
Didn’t that drop the overall compression?!
What angle did you set the lathe? I bought the same kit you have. I also broke the dykes ring. Is it the 43.5mm?
I’d reference the piston head. In this case I cut at 19 degrees. I would say the moped ranges i’ve seen is 18-23 degrees. Find the piston head angle and add 1 degree.
@@MopedProblems thank you.
New subscriber . can you help me out.i got a 50 cc Chinese monkey bike 204 . the guy I got it from says it doesn't run I don't know much about 50cc bikes all I know there's no new parts to buy . China don't make parts . what should I do ? Any ideas ? Thanks .
yo, do you guys know if there's a way to make a rpm counter or smth like that for a puch maxi?
Thanks in advance
Trail tec has a little one. I’ve carried them in the shop before. Most people find the trail tec temperature gauge more useful
Nice video...but why do you have that annoying background music?
Should you chamfer the ports?
Do you have any tomso parts for sale beacuse i saw you once sold an apn 6 for $200
window piston and weave valve third transfer port
I Love tomos
Best bikes for sure
Hi, what are the dimensions for the squish band cut out? I bought the kit but don’t know how much to cut away. Thanks!
It all depends on the size of the kit. Measure the bore and cut the same into the head. If the kit comes with a matching head gasket, that’s a good tracing tool
Moped Problems ok, I bought the same kit you did. I’ll trace it. I’m curios on the curve of the slope. Do you just cut it smooth?
where is new muffler? and why carburator is not machined,together with main jet enlarge 10% ? Making cwai stroke to go fester is science.
I remember same PUCH still 50 cc can go easy more then 100/h even automatic .2 stroke engine has 2x times burning: 1. in cilinder, and 2. in muffler.When they making new muffler measurment parts(conuses ) must be correct in milimetar Like I said before,that is science
that reason this video not works
I need a link for a eton beamer 11 2stroke big bore kit p,ease
want to put a similar one on my tomos flexer 25km... but, do i have to also set ignition time to 45kmh?? and if so... how is that done? any help would be appreciated thanks!
Yes. Otherwise is the spark too late with igniting the gasoline and air mixture. So what happens is that the mixture is igniting while the piston is already on its way down. So you would have to take kickstart pedal or left pedal of. Then you remove the cover. There are 3 bolts holding it in place. When the cover is off, you can see the flywheel. You need to unscrew the nut and take the flywheel off with a flywheel puller. When that's off, you can see the coil. To the left are 2 lines and on the coil is a dent. You need to losen up 2 little bolts that are holding the coil in place. Then rotate the coil to where the dent lines up with the upper line. Then, put everything back together and test your bike. The spark plug is now sparking sooner so the mixture will ignite when the piston is at the highest point.
damn dude thanks a lot! Just waiting for the flywheel remove piece to arrive already! Really detailed and helpfull response, i appreciate it! I feel my bike wants to go much faster than it actually can right now, when i get to 25-30km/h it makes a sudden restriction noise that im dreaming of eliminating hehe
@@K405X no problem man! I don't know if you have the flywheel nut off already but the easy way to do that is with a impact wrench. Just vrrrrrttt and it's off. No piston stop needed.
Hey man!! Back after some days! So, ignition is set to upper mark now, and changed the exhaust from stock to a biturbo... The ignition is exactly in the upper mark, but now after these 2 changes bike isnt working correctly, a lot of throttle delay and really tough idle... Was told changing the exhaust changed the air/fuel mix and now its to lean, so, tried all sizes of jets trying to stabilize but still nothing... Everything else is still stock, with 6000km old! (also some small grinding in cylinder+manifold by a mechanic)
Should i go back a few mm with the ignition set?
Puch maxi wen i used a big bore i alsow used a foot brake
Will this fit a Honda express nc50?
What size tap are you using for the decomp?
6mm x 1.0
are there any mopeds that you know of that have rotory disc valve motors?
Yes, the Vespa/Piaggio mopeds (si, grande, ciao) all have a simple crank lobe window rotary induction.
@@MopedProblems do you have any of these rotory valve mopeds for sale???
Anything u recommend for a 1980 102 sp peugeot . I want to make it fast 👍👌
My favorite kit (that's affordable) is the DR kit. 70cc and cast iron, fantastic quality.
diggy dice i stay in la cops really dont care about mopeds
diggy dice yeah man give me the link .. thnxs 👍👌
diggy dice yeah man give me the link .. thnxs 👍👌
Latest vid is about a Peugeot... just sayin
Go berzerk and fit NOZ
can you use the 50cc head with the 100cc piston?
No the head is to small
Meni se ono na pocetku ucini reko jel ono tomos☺
Is it worth it going from 49cc to 64cc or even 70cc stock is 2.5hp whats 70cc gives?
The larger size is only part of it, the larger kits also have larger transfer ports and larger intake and exhaust ports. Depending on what carb and pipe your pairing it with, you can get much more HP
I have a tomos i want it to be quick off the line what kind of setup should i have intake gearing and exhaust cyl head? its a a35
How to order one of the new mopeds
Send us an email: mopedproblems@gmail.com or visit our website: www.2ndstrokemopeds.com/parts-store
Mine is fast enough with a jet kit and pipe to be honest.
Can I order a moped with this done already
dave g youncan also buy 70cc heats if you can’t machine a head yourself
Is it a crime in country to install 20ccm or more ? Cause we in germany are very fucked if we get busted with tuning...
Ps: do you have an Instagram Account or Facebook?
The cylinder upgrades never became a problem in our past, nor the present. We do the upgrades all the time.
We have both Facebook and insta @second_stroke
What is a good kit for a tomos lx?
I hear you Clay! I commented back in the other video. Alukit 👍
How is the puch maxi as a starter bike
Great starter bike! Easy to find (lots of them for sale). parts are available online... performance parts too (at good prices). Simple bike that doesn’t need special tools to fix. All great reasons
2005 Adly sliver for 2strock what can I do to make it brake 33 MPH
is it street legal to put a 64cc on a push ? I'm a european with hundred of laws...
It’s very gray, but overlooked for the most part
How do you set advanced timing for that cylinder on this Puch?
The stator plate has slotted mounting holes, it can be adjusted a little for fine tuning
Would it work with a tomos?
Same techniques. I would use an actual TOMOS kit on a TOMOS.... while it would work because the stroke and stud pattern is the same, a custom intake and exhaust would have to be made. Lots of extra work when a “bolt on” kit is available
How do I know how to get the right kit.
Trial and error, years of experience... or ask a wiseman on moped-army
What brand do you have?
genial
lol 49cc to 64cc big bore without changing the crankshaft = R.I.P Crankshaft. i think
Nah it’s fine. It’s only 15cc
@@MopedProblems ok😁
What happend to augie?
He’s still around. Just bought a brand new moped from us. One of the exotic TOMOS we imported. Should see him in an episode soon.
@@MopedProblems hell yea man thats sick!!!!!!
where can i get a kit and also i am from macedonia and i cant get it from a store
For what moped? Make and model?
Moped Problems do they sell kits for the roughhouse 50?
@@MopedProblems for a tomos sprint a 35 engine year 2000
Wish I could hit like twice.
Thread locker? Torque wrench? Torque specs? Torque pattern? Bruhhhhhhhhhhhhh
Thread locker has no place on the top end. The block gets hot enough to make it useless. Additionally any follow up service can lead to poor torquing because of old thread lock creates faux resistance. A torque wrench proper would be a good idea. 10-12 pounds per square inch, but most people don’t have this tool. “Moped tight” is what we use in the industry.
@@MopedProblems I've ruined many cylinders, mounting hardware, and cylinder studs learning "moped tight". I def know what you mean with the residual threadlocker making it feel snug when it shouldn't. Thank you for the solid advice you got yourself a subscriber:)
The music over your voice sucks man . I have 1 moped and 2 scooters. I'm working on my moby av7 doing a motor rebuild an could use some good videos if you can make any . Also I'm wanting to swap my honda express 2 with a clone gy6 150 cc do you think it's easily doable cause right now its seized
You guys have the whole nyc&li moped seen all screwed up! People think they have gold! They have a pos 70's jaws which is JUNK and want $1000.
Thankfully there aren’t many Jawas in NYC. Total junk.
Goes for all mopeds! A puch moped shouldn't cost $2000. It's a moped.
A lot of people are very passionate about mopeds and it's their Hobby usually price comes with demand out here in Arizona you could get a moped for about for $500 I just saw a 77 peugot I was thinking about getting for 400 something. In New York it's so much more congested so the want for mopeds is higher
clean your poor lathe :(
This lathe gets put to good use and loves her life!
i love to see a old southbend used i just restored mine hate to see one in the tough shape @@MopedProblems
you just lost 5hp.
Took to much out the head and doing this with upgrading the rest is pointless
Works pretty good though. Solder test on the squish band will let you know if you gone too far
Those mopeds sucked back in the 80's. And they still suck.
Blue Mountain Edward, i dont like your tone buddy!
those mopeds sucked long before the '80's
Kippenkop Kuikenei gekwetst?
Sucked? Those things went ! 60cc 6 port on it 17mm carb on it and a good exhaust . Mix ur own premix 34:1 with good oil !👍
This video is ridiculous! You dont have to tap this decomp hole. Waste your time and money!
It’s an important move if you admire longevity. After time and time again seeing blown head gaskets, we require this technique on all installations with an unused de-comp valve. Doing so has saved our customers money, preventing a blown head gasket the following year.
I have too. Its leaking like hell, it wont idle.
Yes, blocking the decomp hole will save you from this frustration!
What size tap did you use??
this music is so anoying
The CHILDISH MUSIC was too much for me!!!!