HOW-TO - Small Engine Crankshaft Swap
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- Опубликовано: 15 окт 2024
- HOW-TO - Small Engine Crankshaft Swap
Ever wonder if you can swap engine crankshafts? Well the answer is yes!
Watch as I show you how this is easily done!
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The video makes it look so easy. And it was! I've grown to love small engines. Cheap education and entertainment.
Keep in mind, I missed this during rebuild of a 1980 3.5hp Briggs vertical shaft, the crankcase gasket, there are two for this engine, this one needed the .015. I could barely pull the engine through, broke in all back down miked everything put it back together and still was so stiff, I did get it to start. but pulling it through was just too hard to do and I knew there was something else that needed my attention. The dealer had sold me a .005. I didn't give it a second thought, until I remembered reading about the two different thicknesses. What a difference a few thousands of an inch make. Great channel.
Well done and even though there is no crankshaft swap in my future, I watched the video anyway just because I like the way you do them.
Air hammer tip is great, it has so many uses we tend to forget, great!
It won't be long and you'll be in the 100K club Donny! Congratulations on your channels success! Also, great video as always! Cheers!! Zip~
thanks
EXCELLENT VIDEO. One of the best detailed videos I've seen for removal and replacement of crank shaft. Thanks. I think I can do it now!
This video, and another I found specific for a 196 CC Honda clone, really helped me swap out a 5/8" shaft to a 3/4" for the addition of a torque converter on my minibike. Thanks!
Using the air tool to loosen the flywheel was a valuable tip. I always learn something from these videos. Thanks for posting them.
Hi, thank you for a very informative video and very helpful for me as a layperson.
I enjoyed watching you change out the crankshafts on the two engines and believe that I could do that. I need to figure out how to get my power generator going which have not been started in many years. It never was used since I had problems with it since buying it, and installing the oil in it. The newest one worked fine, but I never used it since our power never stayed off long, when we lost electricity.
Three excellent skills; mechanical excellence, video presentation excellence, and teaching excellence. Thanks.
Very helpful step-by-step instructions. Original engine with old style starter clutch and all metal parts was nice to see.
Awesome video i had a 1965 briggs with a plane crank shaft the was damaged like someone tryed to grind it an make it a 5/8ths shaft an hammered on a 5/8ths shaft an bent the crank i had already threw the block in the recycle bin when i found this video the cylinder walls looked new an the valves looked like they had never been ran more then a hour so i got some other engine with the intake ceased an took out a double sided bearing pto side crank that was on a newer engine style an put it on the old 1965 block i used the newer style head an all the hardwear because the old bolts where flatheads bolts an they never tighten good the rip cord side was a short shaft so i used a new cup an new started the engine loooks cool an i saved the original engine to my classic minibike👍 🎉
Was in a hurry one day putting new rings in a Briggs and didn't emery the crankshaft before reinstalling the sump! I thought how bad can it leak? It didn't leak much, just enough to run down on the drive plate on a Snapper rider! Had to stop cutting and clean the plate every 20 min from then on! Live and learn!!
Excellent video! I am working on a motor with bearings on the crankshaft and I was wondering how to match up the timing marks
I haven't seen you in awhile, nice to see your videos are still up, nice job.
Wow, excellent job my friend!! One of the most informative, concise videos I have ever seen. I wish you could help me with 1 year old Briggs and Stratton with a bent (I think) Crankshaft. I found out you can not cut a 3/4" reinforcing rod with a Lawnmower. LOL!! It was hidden below some weeds I was trimming. Should have used the weed wacker, now I know that. I did replace the Flywheel keyway and the Blade, now it starts. It runs fairly well at full speed but at idle it vibrates like crazy. Oh well, you live and learn.
I usually do not end up repairing bent cranks
Do you remeber what the torque setting is for the flywheel nut? Thanks! Great video, very helpful!
Don..you are awesome. You are a life saver. Thanks for your videos..
Welp. Now I know how to do my vertical shaft 8hp B&S. Thank God it's easier than I thought. The things I do to restore an old mower keeping as much original as possible...
Thanks you so much for putting these videos up. I successfully rebuild a honda gx 160 thanks to some of your vids. By the way I am from AUS.
Dony i have a question for you. Do Canadians, or for that matter people in your community have a tendency to purchase quality outdoor power equipment? Here in the States most people buy "one season wonder" throw away equipment. I'm curious as to your opinion as a Canadian. Maybe you can squeeze this onto a q&a video...? Thanks. Longtime subscriber here.
Thank you for this great video. I especially appreciated the efficient presentation and concise editing. Well done!
Excellent video! Left absolutely no questions! Perfect and thank you.
This taught me so much thank you!
Hi Donyboy, Always enjoy your superb videos. Just an FYI, I took a keyed crankshaft from an 8hp Tecumseh snowblower (that had a broken rod and cracks in the block) and put it into a 10hp Tecumseh wood chipper engine that had a tapered crankshaft. I checked all the specs with my micrometer and everything was exactly the same. The only difference, other than the crankshaft end, between the two engines was the piston bore. I used my "new" snowblower with it's 10hp engine for 3 hours after a big snowstorm and it worked just fine.
Well timed video. I'm just about to swap out crankshafts from two similar Briggs and Stratton Motors. Thank you sir.
excellent video, great photography & edits. Sometimes it may be better to search for a used engine with the right crankshaft. Thanks
I love the videos very cool learning how these work!
I have the same situation with a Honda Gx390. It has a long taper and I want to replace it with a keyway shaft. Do you think it will fit
?
I have a question about a Kohler engine would it hurt the crankshaft if you cut the pulley side off
Nice walk-through Don - video is HQ in content. Great weekend to all.
Best video of small engines to date. I have a 5hp B&S horizontal engine on a go cart. I replaced the carb. It's back together but I can't get the throttle right. I can't find a schematic of this type. No manual throttle capability only the choke. I need a choke rod so could use some advice how toi find one vs making one. The governor is functioning. This go cart engine didn't have the race track in the linkage which interacts with the manual throttle control. I know linkages vary and the model # for this one is no where to be found. I just need an image or schematic reference of how this should connect. The new carb came with the throttle on the carb hooked up. Also, the needle valve for mixture control did not have a spring on it so I'm guessing I use the old one even though the new needle valve looks different than the old one and the ones in the kit. Hope you can help advise about a schematic or and image or two of how this throttle linkage should hook up.
I have a spare engine, but the machine needs the end of the crank to be tapped and threaded. Can I do that to it? Have you tapped the end of a crankshaft so you could add a center nut?
yes you can if there is room
@@donyboy73 Cool, thanks.
Hello. Craftsman engine model 20M314 what torque on the crankshaft cover swamps?
Excellent video 👍
Hii, can i know whether i can attach heavier flywheel weight more than the small engine into the output shaft of that small engine?
What size impact driver do you recommend for small engine work. There are so many of them out there it's really confusing. I know you require special sockets with an impact wrench. I would prefer something battery driven or electric rather than an air tool. My use is for my own equipment, no commercial work. So basically it would be used on lawnmowers, my riding mower and generator. Thanks Dony, appreciate your help!
watch this video ruclips.net/video/yp3QUj-TG0A/видео.html
do you think you should torque twice? in my experience the bolt always moves a little tighter the second time.
An engine I'm tinkering with now has the ball bearing arrangement on it. I notice a tiny bit of play in the ball bearing so ideally I would like to replace it. Though I have no clue how to get it off. Any advice??
I need to do this to my pressure washer, will it be about the same way as you did here?
Well done son..your a great mechanic and your videos are succinct and easy to follow. Have a question..Honda GVC 160 sheared the key drive sprocket for the timing belt. Have you ever seen that before? Again...great videos..keep up the good work. Jack in the Republic of Panama
Great video! Love the way you walk through everything. What is your parts washer, and what do you reccomend for someone who would be looking?
Good ol Briggs, so simple and reliiable
I know your application didn't need the bearing but if you did need it, how do you remove the crankshaft bearing ?
@donyboy73 , Is swapping a sump cover from another engine ever a problem due to the block being line bored for the crankshaft during manufacturing, thus pairing the engine block with it's own specific sump cover? Also, any need to check crank endplay after that swap?
Excelent video very useful
I have a 7hp horizontal taper shaft Briggs & Stratton engine and I'll like to swap its crankshaft with one with a keyway. I looked for parts but they are very expensive so I decided to look for another engine and to take the crankshaft from. The problem is that I can only find vertical shaft engines. So my question is: will that crankshaft fit if they're both Briggs & Stratton engines 7hp ?
Just curious, what was wrong with the other engine that necessitated having to do this? Thank for sharing.
Excellent video as always dony
Very nice and helpful video. I had to replace my crankshaft in the same motor as that one, but crankshaft was slightly different. Thanks Dony:)
I have a crankshaft that is too long for my application. Is it all right to cut it off to fit it?
Hey man have you ever heard of a power chief 5hp briggs? It's green 1976? Has alot of tags and details on it awesome looking engine it has the weird crankshaft was wondering of 1993 one would work from a 5hp?
I've never seen one!
How universal are engine parts from year to year? Where do you get your parts for older / newer engines?
Learned a lot here Thanks Can a single shaft be converted to a dual shaft? I have to convert a Briggs for my tiller. I have 2 engines single shaft functional and donor engine with hole in block. Can this be done?
Thanks
if you have appropriate crankshaft and camshaft from another engine , yes
Good job brother 👍
Well done Don. The video was very well made.
I have a briggs push mower that sits way too high in the deck.. is there any way to lengthen the crankshaft ?
Hey Don, Great video. Exceptional step by step instruction and great camera work. Just wondering why since I don't see a single video on YT on reworking a head on a riding mower with briggs engine. I see them on the small engines where the valves are lapped but nothing on the riding mowers with the overhead valves. Just wondering if new springs, guides and valves and guides can be put in or would it require machinist work and make it more cost effective to order a new head. I'm sure that would be a huge cost though. Anyways would appreciate if you would comment or make a video on that. Thanks for your great channel !
On the engine you were running at the end (the five hp b and s) I am currently working on one and wondering if you could make a video on how the governor linkages are set up on this particular engine because I have done research and cannot find a diagram for the engine
Guess I will pull the bent crankshaft on my Honda mower. I was going to try and get it straightened but for the price, Its just as easy for me to Replace instead of messing with a bent shaft.
yes sometimes, just find a good used one
I have a 14.50 briggs with a bad block. It may can be bored out. I don’t know anybody around where I live that will bore a small engine. My bad briggs is Model 204312 Type 0529B1 OHV. What block can I use to swap shafts? The motor is for a chipper. It has a big tapered shaft like in your video. Can you help me find a block I can use to swap the shaft?
HEY Donny I have a 11hp Tecumseh engine with a tapered crankshaft that I want to change to straight. Are there any engine that have a straight crank will fit? I have been looking online but can't find any.
What was the trok setting for the pull start side crank nut thanks
Hi Don, thanks for making this video! You are a great teacher. I have a question: what were the torque specs for the bolt on the flywheel? Thank you!!
Can these bolts on the sump cover be different on a different motor because mine are 7/16
What kind of crank does a Briggs quantom pressure washer engine have...keyed and tapped like a mower?
Did you put new crankshaft bearings and seals or reuse old?
reused old
Is it possible to re-thread the grooves on a crank shaft where a lawnmower blade bolt goes?
yes sometimes I run a tap or a thread chaser to clean them up
dony have 18hp briggs opposed twin mower can run it for any amount of time bu t as you shut it off you cannot start till next day looses spark when hot tried 3 coils 2 key and flywheels isolated kill wire with no luck please any ideas its a single coil thanks
hi dony boy I have a problem with a sthil back pack when I try to starter the cord pull back very hard with a little explosion what I can do ?
Hey man, I need a crank for a 7hp Briggs. I can't seem to find much on 7hp. 6hp and 8hp. But not much about the 7hp. Can I use a crank from anything else? Thanks
Enjoyed this great video and, as always, learned some excellent tips.Thanks
Thank you....Well Done Video....
Nice job Don. Enjoyed the video. Thanks!
hello dony ,, i rebuild my Chinese generator engine and i bored the engine and replaced the piston rings but still i found out after 5 min of starting the engine that some of the oil leaked and reached above the piston very small amount of oil
is this normal for small engines ? i mean im pretty sure i did every thing right ,, it even started from the first time
thank you for the video
If you bored your engine you have to fit an oversize piston.
thanks! donyboy, !! from now on, I will only use higher octane on my lawnmower :-)
you're boss man !! :-)
I'd like to ask donyboy, is it possible to blow up the 20hp two stroke Yamaha outboard engine, by driving it full speed, longer than one hour? I'ts old engine, year model 1986.
Very helpful video thanks.
I have never tried that "Ultra-Black" stuff.
I've always preferred "TABER'S" (IF one can find any),
Or Permatex "Form-a-gasket".
hi donyboy, i have a question for you about a small engine briggs and stratton sn 128m02/0134f1
the engine was blown, prob was the connecting rod. i did replaced it with the right match, however when i tighten the bolt ,100inch lbs and tried to spin the crank shaft it won't turn at all.
Ok. I have a Honda GX270 9hp small engine that has a short crankshaft. What can I do to extend the shaft please?
Nice job.
And keep up with the good videos very good and helpful
Glad you like them!
Hi Donyboy or any other master mind reading this. I have a Tecumseh HH60 engine with a broken crankshaft: 31856A does anyone know if i can swap it with any other crank and a simple solution like a sleeve to make it work again.
Another great video.
Holey moley, nearly 100,000 subs!!!
Nice job. All you need now is a mini bike frame and some wheels.
Should I use non-detergent motor oil in an engine that does not use an oil filter?
no you shouldn't
They make a sleeve you can put over the crankshaft. I don't know how well they work though.
Well done.
Hi Bruce! :) lol!
just to point out does that double application of rtv with gasket affect endplay?
no
donyboy73 reason I ask is they say you use certain gasket sizes to obtain crankshaft endplay clearances which can start at .002. you would add thicker or thinner or double a certain size. I do love the learning experience from you, I've learned alot, I don't know how you do it - work, make videos and reply to your fans. amazing!
Nice one Dony. 👍👍
I'm glad to see Dony is a real mechanic now. Real mechanics don't need to wear gloves to keep from messing up their manicure. So now what do I call you. Oh, must be Don.
All joking aside, that was one fine job, Don. You are the best.
Thanks,
rev don
what the torque spec on the flywheel end for a 190cc B/S engine please
Excellent video as always, 👍
Nicely done
Hi donyboy do you know what the part number of the key on the crankshaft for the timing gear is its seem that no one knows
great video , like to see more of these repairs.
Very good information. But 2 questions. why did you have to change out the blocks in the first place? Was there some sort of damage, oil leak, smoke? and in the leaf blower application wouldn't the lack of a rear cover crank roller bearing shorten the life of the engine having to turn the heavy blower fan?
He didn't change the blocks, he changed the crankshaft. And the reason he said is that for the intended use of the engine it had to have a different shaft on it so he switched it.
If you think about it he did replace the block because he took the crank out of another engine that may have been blown and put it into a running motor just to achieve the crank shaft size he needed for the application
He put the crank into a different block. so my question was what was wrong with the block he took the crank out of. You also see that he switched the carb, exhaust and recoil.
Yeah I fully agree with you Richard was just responding to nate as they said he didn't change the block which he did do also by putting the desired crank into another motor
Hi Dony, do I have to reset my points after I swap them crankshafts? I swapped same ones and I got no spark but one time I feel there is a current going from magneto one time I feel nothing, do you know what may be the issue?
USUALLY NOT BUT YOU SHOULD CHECK THEM ANYWAY. SOMETimes running a 400 grit emery paper between them helps