Well I am now in the process of rebuilding my hatch again and I need to have my sleeves rebored. I currently have in there AEBS T-sleeves in an 84mm bore. This is in a 1.8 GSR block bored to a 2.0. The vlave reliefs on my CP pistons took a **** on me and destroyed my turbo. What also happened was because there were pieces of the piston missing from the tops it was no longer balanced and there was a ton of piston slap expecially in cyld. 2 and 3. This has made it so that pistons rings will no longer seat properly in the 84 mm bore giving me way low compression (140 accross)
So my question that I have lead up to is am I able to safly take my cylinder bore to 84.5 with the sleeves that I have?
Second question is I am in a toss up between running Arias and CP pistons is there anything I can be made aware of w/ the 84.5 models is one better than the other?
Thanks
Steve

 

I have my AEBS sleeves bored to 85mm and I'm turboed also. I have Wiseco pistons in my set up.

 

So there is nothing to take into compensation when reboring after market sleeves..

 

84.5mm bore is very common and should not be a problem at all

 

You can bore it. NO problem

 

yes sir i took my 84mm aebs sleeves to 84.5mm

 

i think u can go as high as 86mm if you did not o-ring.....


no problems at all going 84.5mm, thats where ill be when i blow my current setup eventually, maybe even 85mm