Ive seen people going that direction with almost identical set-up and lose power is this normal or going 82mm instead of 81.5mm usually will make more power on a b18c???

 

I think bigger is better, that's why people sleeve their blocks and go 84-85mm. But if you go too much on stock sleeves, that's asking for trouble. I think 82 is the max for stock sleeves, some even say 81.5mm is the most you should bore.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by all-mtr-teg &raquo;</TD></TR><TR><TD CLASS="quote">I think bigger is better, that's why people sleeve their blocks and go 84-85mm. But if you go too much on stock sleeves, that's asking for trouble. I think 82 is the max for stock sleeves, some even say 81.5mm is the most you should bore.</TD></TR></TABLE>

Thanks...i have no choice on going 82 cauz ive dropped some valve and blew a piston on my 81.5 built And im not a 2.0liter guy so i wanna keep my b18c block and repair the dammage sleeve!!!

 

did you crack a sleeve? if not just rebore, i have 82mm itr pistons for sale. Brand new still in box from RS Machines.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by all-mtr-teg &raquo;</TD></TR><TR><TD CLASS="quote">did you crack a sleeve? if not just rebore, i have 82mm itr pistons for sale. Brand new still in box from RS Machines.</TD></TR></TABLE>

The sleeve are not crack but all the pieces of my broken piston and the 4 valves mess up the surface of the sleeve...so my builder said he have to re-sleeve after inspection!!! Thanks for the offer of the pistons...i need 12:5 and up CR for my built!!!

 

...

 

82mm is what im running this year. If something happens then im forced to re-sleeve! You can look at thats a good thing or bad...

 

MY Cookie Cutter build is 82mm and it worked well.

Search under user Natural Aspirations

 

...any more output???

 

im running 82/89 on gsr block.no problem at all.25+ run on dyno&gt;&gt;daily driven.

 

If you need to sleeve it then swap it with someone that has a std block that wants to sleeve theres.Save the 1k if you don't need the big bore or strength.