Things you wish you done the first time.

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needle bearings

If I buy another engine that would be the absolute first thing i would replace (needle bearings). Even though the engine comes with them now, they are still not durable to a better quality one form a STIHL dealer, or another company. Second thing i would do is while the engine was stripped down, and carb. make sure there are no pieces of metal in the engine to destroy the piston or cylinder, use a sealent to reassemble the engine, also a sealent on the carb to avoid gas leakage. and replacing the air cleaner with a better filter so all that dirt don't get into the engine
 
Another thing i would suggest is to machine (taper) down the ports due to the rings takin little chunks out of them and destriying the cylinder.
 
The one thing i should have done is bought a bigger engine.I bought the 48cc so if i was ever pulled over by the cops atleast it would be legal(legal as far as i could determine).....................mistake.
 
Make sure before you start the build that the bike you're using is solid and it's components are of decent quality. Also, the clutch should be the locking push button kind.
 
With the rubber mount debate what seems to be the current answer?

I hear of people saying they used some sort of rubber mount, and then had scratches or frame damage..

I also hear about problems with rubber mounts (although I dont know exactly what they are)...

Is it best to just mount the motor solidly and see how the vibration is?

Frame damage is a scary thought :/
 
solid mount, Yeah its the best for a secure mount, BUT.... try it for about 200 miles and then remove your engine and tell me what you think. So then I tried rubber, or you can use leather and the problem was solved no more diggin in. Its your call.
 
Another thing i would suggest is to machine (taper) down the ports due to the rings takin little chunks out of them and destriying the cylinder.

I take this to mean "File down or deburr the port where it enters the cylinder" Correct?

Gary
 
Correct, intake and exhaust ports, any little fragment or chunks and you loose power, as soon as the cylinder is nicked or gouged in any way , little by little you are going to loose power, you may not notice it at first but as time goes on you will. So to avoid the bigger chunks file down as much as you can, but not to much. BUT, as cheep as these cylinders are your always gonna have some pieces detach from the cylinder and scar the cylinder, and nick the piston.
 
Need Input!

Great!

I would love to have all of this info Before I start the build. So far I have:

Grease the gears in clutch unit, Put rubber sound dampeners in the cooling fins, drill or cut tube inside the muffler, put some sound dampening material in the muffler, and some on the engine coverplates.

Now I have : deburr the ports.

Anybody have anythig else?? Chain noise?

Gary
 
Great!

I would love to have all of this info Before I start the build. So far I have:

Grease the gears in clutch unit, Put rubber sound dampeners in the cooling fins, drill or cut tube inside the muffler, put some sound dampening material in the muffler, and some on the engine coverplates.

Now I have : deburr the ports.

Anybody have anythig else?? Chain noise?

Gary

For chain noise throw away your supplied chain tensioner and replace it with one that's spring loaded....one that never needs adjustment or maintenance.
Also replace your Chinese stretch-o-matic chain with a KMC 415H or better still KMC K910 Kool Chain(Extreme Freestyle).
royce.jpg

PS...forgot to mention:
1.O-ring the carby(very important)
2.Lights(if applicable)
3.Stainless steel clutch cable wire insert.
4.Seal the air filter.

That's about it...good luck. :)
 
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