So, I may have screwed up.....what happens if i mix up the cylinders (front to back)?
I'm pretty sure I know which one came from where, but I'm not positive.

 

Uhh, you got pictures of the rear cyl. missing some paint on top.

 

Good thread man, please keep it updated, im tearin down my EVO with 49k on it.

 

Nice catch! Even I missed that! Thanks!

 

Should the pistons be removed and cleaned up?

 

I would remove them, clean them up, and put new rings on them.

Basically since you are there already do all you can to keep from having to go back in.


Just my 2 cents.

 

I would remove them, clean them up, and put new rings on them.

Basically since you are there already do all you can to keep from having to go back in.

Yep your down into it best to do new rings as well

 

Traildog, read through this, may help ya.

http://www.nrhsperformance.com/tech_...assembly.shtml

 

It's just my opinion but if you pull a piston you are not going to get ring back in same place and it will need to seat in again. If it were I, I would replace the rings. Make sure you do not have a ridge groove in cylinder. And I also would lightly break the glaze like you see in the cylinder in 3X's attachment. With just two cylinders, you can do it by hand if you like. Have you measured you piston at the proper location (need a book for this) and the cylinder bore at the wear area just down into it a little way (about 1/4") to check for wear?

 

Excellent read! Thanks.