What kinda gap u guys run for big hp? The paper that came with them says. 0027 and thats all? Would. 0045 be to big for these pistons?

 

What bore and how much hp are you planning to make?

 

I ran 0.0035" when I had Supertech pistons. 81.50mm bore and made 400 whp. There was a small amount of piston slap when it was really cold, but that gap worked well for me.

 

85mm lookin for around 600-650 under 30psi if i can

 

.0045" is right inline with that bore/power level in my opinion.

 

.0045 on mine. 700whp 81.5 bore zero slap

 

.0040-.0045, i had .0030-.0035 and i had skirt wear

 

I had supertechs on an 85mm 12.5:1 all motor at .0039 and they are LOUD. Still running good years later but it makes everyone say wtf. Obviously way worse when cold but if I could do it over i'd run .0025-.003 for sure

 

just got mine built with 81.5mm bore 10.5:1 (Ls-vtec) and i used the one that was for moderate turbo (sorry i cant remember the gap right off the top of my head) when its cold i can hear a slight slap but no problems so far and it just got on the dyno yesterday. i should be at about 460 whp, tune will be done this morning we ran into a fuel pump issue we got resolved.