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Old April 4th, 2014, 02:04 PM   #99
Ginganinja
pregens for the win!
 
Name: Andrew
Location: Los Angeles
Join Date: Mar 2014

Motorcycle(s): 07 ninja 250, 07 yamaha r6

Posts: 77
Quote:
Originally Posted by Racer x View Post
Follow the service manual. I do not use factory pistons. The idea is to NOT have any ring gaps lined up.
Ok, I'll try what the service manual says first and if that doesn't work after a couple hours.... i'll come back to your idea.

Quote:
Originally Posted by n4mwd View Post
I aligned my rings the way the manual says and there was no problem. I didn't have any problem getting the pistons to go into the cylinders either. There was a little extra force at first, but they just went right in. I just lined up the pistons and gave the cylinder block a shove.

The hard part is getting the timing chain to behave. It keeps wanting to fall back down the hole.

Don't forget the gasket. You can reuse the lower, but the upper should be replaced.

Its also not a bad idea to get a straight edge and check for head warpage while you are in there.
hmmm, ok maybe i just need to use a little extra force, i was just worried about damaging the rings and cylinders before.

As for the timing chain i was thinking of rigging a hook up or something that would easily pull out the chain from the cylinders if thats what you mean. I did run into a problem that everytime i turn the crank to move the pistons, the gears want to eat the chain This is just a bit of a nuisance, but easy to deal with.

I can check for head warpage real quick before i throw it together, what do i check? all the mating seats where gaskets go? top of case, lower and upper of cylinder and lower of head?

I have all new gaskets, to put on, one of the more frustrating parts of putting the pistons in i find is dealing with the gasket as well.
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