jason007

i looked for a topic that would say what the bore is but i didnt find one, i got a 00 Si and want to know the bore and what aftermarket piston would fit without going overbore
thanks

BryanM.

iTrader: (1)

IIRC B-series VTEC engines have a 81.1mm bore.

jason007

so the b16,b18c/c5 got 81.1mm bore? alright thanks

BryanM.

iTrader: (1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jason007 &raquo;</TD></TR><TR><TD CLASS="quote">so the b16,b18c/c5 got 81.1mm bore? alright thanks</TD></TR></TABLE>

Yes <FONT COLOR="red">BUT</FONT> that is right out the factory door. Have it honed/measured <FONT COLOR="red">BEFORE</FONT> you buy new expensive pistons.

Schister66

Depending on mileage and condition of the cylinder walls, you may have no choice but to overbore to 81.5mm. Its not a bad thing to do on stock sleeves. The fresh bore will ensure a good seal for the new rings. IMO, its the best option.

B18c1 ej1

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jason007 &raquo;</TD></TR><TR><TD CLASS="quote">so the b16,b18c/c5 got 81.1mm bore? alright thanks</TD></TR></TABLE>

And non-vtec LS's.

jason007

alright thanks
what would be some good pistons to throw in there if i have to go overbore to.. 81.5mm? i've hear jp are good but i looked them up they go for 600 (set of 4 with rings)

Schister66

You may be able to get away with running stock bore, but personally i would rather overbore to 81.5mm and know that i'll have perfect cylinder walls.

What are your goals for the car?? You may not need to spend a ton on pistons unless you're looking to boost. There are stock replacement pistons available for a lot less money.

jason007

i want more power all motor but im not going to spend a lot of money or at least try not to, i have a b18b block sitting in my garage and i wanna rebuild it make it realiable but not spend a qhole lot of money