china bike 122cc dohc 4 valve project

[epod]

Show me more please. Great stuff. Really want to see all the timing gear come togeher. Peace

[tormentandglory]

ripped heaps more metal off tonight! cams now spin, and its starting to look like a cylinder head, not a huge chunk of alloy next job is to fit the cam gears to the cams.

[tormentandglory]

gotta strip another engine tomorrow to get some more parts. need another cam sprocket and I have to join 2 chains together. original chain is way to short.

[unit_mx]

My god , that thing is a monster. Can't wait for the finished product... Looks stunning.

[tormentandglory]

I'm using the little gears off the crappy chinese electric starters for cam chain idlers. I've machined the centres out and pressed ball bearings in. cam gears aren't fitted properly yet, thats tomorrows job.

[themountain]

you are not putting some guides in?? this engine will rev to the moon and the chain is pretty long....you better take care of that

[tubes380]

mate thats coming along nice!!!
how are you going to seal it up, whats your thoughts?

[cardy]

thats pretty intense

[tormentandglory]

Originally Posted by themountain

you are not putting some guides in?? this engine will rev to the moon and the chain is pretty long....you better take care of that

Hehe yeah, I'm aiming for a revvy engine. I'll be disapponted if it wont spin to 14k. If the chain rubs in the top of the head I'll put a nylon runner in there, but I'll wait and see first. I'm sure it'll have to come apart a couple of times to sort out bugs before its perfected. I use manual chain tensioners from early model z50j's in all my engines. The spring type ones are useless. As for sealing up the front, thats gonna be a bit of a challenge. I'm sure I'll come up with something

[tormentandglory]

Cams are now finished completely, and the timing gears fitted.