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Puch Maxi- Engine rebuild- New bearings and exhaust. 

Seaside Garage
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The very noise moped engine is torn down and rebuild with new gaskets, a clean and new bearings for the crankshaft and for the gearing.
The engine got water damage, but is salvageable.
Also the exhaust is changed which will make the moped more quite but will also make it perform better because a two stroke engine needs back pressure to work right.
The difference in noise is quite massive!

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20 авг 2024

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Комментарии : 46   
@ambero25
@ambero25 9 месяцев назад
This engine is soooooo simply to rebuild 😊 i really love this moped 👍
@DetroitMicroSound
@DetroitMicroSound 4 года назад
A point of note: Make sure that the seal on the left side of the crank is spaced far enough from the bearing, as to allow proper lubrication, or the left crank bearing will overheat. The left crank bearing is lubricated by your fuel, and oil mixture, and the right, by the trans fluid in the gear case. If you look at the case inside under the cylinder, there is an oiling channel leading to the left bearing. You want the opening to your bearing, nice and wide. I just rebuilt my E50. Nachi bearings, viton seals, and a new weighted crank and connecting rod with needle bearings in the small end.
@SeasideGarage
@SeasideGarage 4 года назад
Thanks! I luckily did that! :) Important thing to remember... :)
@DetroitMicroSound
@DetroitMicroSound 4 года назад
@@SeasideGarage 👍 for sure! 😎
@chrlmn7372
@chrlmn7372 Год назад
A big THANK to you, dear, sir, for sharing this fine instructional video recording with us here on YT! Thumbs up and I am glad to be a new follower of your excellent and fine channel! Best regards from Sweden! 🙂💯👍👍👍
@menditman2004
@menditman2004 3 года назад
Good video, I’ve just bought one, I haven’t started it yet but I may further down the line fit new bearings in mine. I will be featuring mine on my RU-vid channel. Good video thanks🙂👍
@SeasideGarage
@SeasideGarage 3 года назад
Good luck with it! give a headsup when you make a video! :)
@geraldscott4302
@geraldscott4302 2 года назад
It's called "spinning" when a bearing fails. I would at least replace the rings. I have rebuilt several Puch E50 engines, and replaced the top end on a few ZA50 engines. I've never had a ZA50 2 speed engine apart, it takes a lot of special tools, and the correct gaskets are hard to find. My 1979 Sears Free Spirit Kromag has a Puch E50 engine. It only had 1200 miles on it and had been kept inside when I bought it, so it is fine now. I may go ahead and buy a lot of the parts to rebuild it in case they become unavailable in the future. Fortunately Puch engine parts seem to be plentiful at the moment. You need to put oil or assembly lube on the bearings before putting everything back together. I often use STP oil treatment. Yes, they do make bearing pullers, but you will almost always destroy a pressed on bearing when removing it no matter what kind of tools you use. What would worry me is the connecting rod bottom end bearing, that goes on the crankpin. No way to replace it, and no way to check it. Since it is a pressed together crank, you have to replace the crank and connecting rod as a unit. Did you replace the transmission shaft bearings? I would have vapor blasted the case halves while they were apart, and make them look brand new, unless you actually want the patina. Did you use assembly lube on the piston, rings, and cylinder before putting them back together? Properly maintained and using good oil a Puch E50 engine will last past 50,000 miles at full throttle, though the clutch will wear out sooner than that if you do a lot of stop and go riding. These are high quality engines
@SeasideGarage
@SeasideGarage 2 года назад
All bearings.. Lucky for me the parts a very easy to get and are cheap...
@puch2728
@puch2728 2 года назад
@@SeasideGarage isn’t it easy access for Puch parts in Denmark?
@SeasideGarage
@SeasideGarage 2 года назад
@@puch2728 yes!
@timini77
@timini77 4 года назад
Loving your videos as always. Looking forward to the next one 👍
@SeasideGarage
@SeasideGarage 4 года назад
Thank you Timini77!
@SDsailor7
@SDsailor7 3 года назад
If i had known that puch is such a popular model i would have bought one instead of a Peugeot, there are tons of tutorial on Puch and hardly any on Peugeot.
@SeasideGarage
@SeasideGarage 3 года назад
Yes... buts Peugeot is a bigger challenge! :) I sold my puch again, its a tiny bit to boring for me.... mainly because its too good... ;)
@SDsailor7
@SDsailor7 3 года назад
@@SeasideGarage Well you are right about the peugeot being a bigger challenge. I hope i can bring it back to life. Cheers
@ShaunMurray63
@ShaunMurray63 4 года назад
Nice job on the engine Seppo, should feel like a different bike now.
@SeasideGarage
@SeasideGarage 4 года назад
Yes .... I dont have to wear ear protection now! :)
@michaelbrath2814
@michaelbrath2814 2 года назад
Tak for de fantastiske videoer, jeg har fundet en ny favoritkanal 👍
@SeasideGarage
@SeasideGarage 2 года назад
Det var da vildt fedt at høre! :D Tak fordi du kikker med.
@timodibbets9155
@timodibbets9155 Год назад
Thanks hopes this helps me
@user-fz9qh1oj3q
@user-fz9qh1oj3q 5 месяцев назад
tak man
@SDsailor7
@SDsailor7 3 года назад
You can use silicone grease on that ignition cable when fitting it thru that rubber hole, silicone does not harm rubber.
@SeasideGarage
@SeasideGarage 3 года назад
Good idea :)
@spaghettimonster1498
@spaghettimonster1498 3 года назад
the leaky exhaust would have weakened the return of the cylinder as its a two stroke engine. btw this is the fourbaring maxi blok a much loved version the later one has 3 barings.
@SeasideGarage
@SeasideGarage 3 года назад
Yes you could be right! Its a very sturdy little engine... the barrel is coated with chrome also! Very rare now..
@meckarmickebjornsson2567
@meckarmickebjornsson2567 2 года назад
God work 😎👍🏻
@SeasideGarage
@SeasideGarage 2 года назад
Thanks!
@beck202
@beck202 3 года назад
thanks for the video. I have the same moped. Can I change the engine with a newer one to make it easier to change the clutch without having everything disassembled. thank you
@SeasideGarage
@SeasideGarage 3 года назад
Thank you! yes I think you can.... But I am not sure...
@ProjectRaceMower
@ProjectRaceMower 11 месяцев назад
Dav skal selv igang med en maxi motor og ville bare lige spørge om man kan får en rigtige pakning istedet for det der flydende noget??
@opidopie
@opidopie 2 года назад
No liquid gasket betweens the carters?
@tokejoergensen
@tokejoergensen 4 года назад
Nice one M8, good job... When will we see more to the Austin Metro???
@SeasideGarage
@SeasideGarage 4 года назад
When some one called Toke comes and helps me out! ;)
@mohamedzekri9417
@mohamedzekri9417 Год назад
بيش يا خويا مازالت تمشي عندنا في الجزائر .خالد زكري.
@holgerst3607
@holgerst3607 Год назад
Where did you get your bearings?
@user-fz9qh1oj3q
@user-fz9qh1oj3q 5 месяцев назад
du har en 2cv??
@alexanderwhite1020
@alexanderwhite1020 2 года назад
How does it handle now? Does it have more torque? Or at least a noticeable difference in pull power?
@SeasideGarage
@SeasideGarage 2 года назад
Pretty much the same... but without a very bad grinding noise from the bearing! It would have spun a bearing og seized soon if I dident change them. :)
@SDsailor7
@SDsailor7 3 года назад
My moped hobby turned into an expensive hobby due to motor problems
@SeasideGarage
@SeasideGarage 3 года назад
... The good part of moped engines is it only have one piston.... ;)
@SDsailor7
@SDsailor7 3 года назад
So if you heat the bearings to make installation easier at what temperature do you set the oven? anyone know? Thank you
@SeasideGarage
@SeasideGarage 3 года назад
I would set it at 250 :)
@SDsailor7
@SDsailor7 3 года назад
@@SeasideGarage Thank you!
@ravns3001
@ravns3001 3 года назад
Hvor i DK bor du?
@SeasideGarage
@SeasideGarage 3 года назад
Fyn :)
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