To install forged pistons do I need to remove the head and all the bull**** on top or can I just remove oil pan and do the whole job from the bottom?? Thanks Bob

 

Head and all the bull****.

There's a recent thread with lots of detailed pics, but I forget who was working on it...

Hobie would know.

 

Found it.

https://www.evolutionm.net/forums/sh...ighlight=studs

 

Thanks Sailorgoon,could'nt get my lazy *** to search

 

You'd have to know what to search for. I remember hobie talking about head bolt studs in the thread, so that's what I searched for.

 

yea.. dont forget that your going to need to bring the pistons to a machine shop to get the pins pressed out, and that you have to file the tops down.. you might want to get someone to do this for you, the rest isnt too bad

 

file the piston tops down? and why? compression to high ?

 

The only time that I know to file a pistonhead down is severe carbon build up from being old logging tons of miles.

 

which i've done with a broken ring and some tranny fluid (this seems to work best)

 

if you read through that post by agent you will see he filed them down.... what happens is your cylinders wear over time.. .and the pistons are just set to a general standard.. but they need to match your cylinder, so you use this mathematical equation to figure out the dimensions

 

i must have missed that

so were these stock sized pistons that were to large? or oversized that were a bit to large?

 

Yuu actually file the ring ends. not the piston. I posted a almost step by step in the forum "OK Piston removal" Dont forget to take your head to the machine shop check it out at least. Definately take it if you exploded a piston running Nitrous. I bent a valve, plus I had tiny piston pieces everywhere.
https://www.evolutionm.net/forums/sh...threadid=49219

 

ok that makes a hell of alot more sense.