queez

ok guys confused about what size piston to use.. i have a b16a2 gonna do darton sleeves and CP pistons. but what size shoud i do?
i was thinking of 9.5:1 cr.. but what if i wanted to go to up from a 81mm to like a 83.. will i loose or gain power?? pro's or cons???
also what rings and rods should i go with??
looking to make around 400 whp.. hopefully on pump gas and more on race gas... this is my setup so far

sc34.. i know its small but .. thinking of changing
inline pro stainless mani
2.5" exhaust and dp (no cat)
720cc injectors
jg intake mani
70mm tB
hondata intake mani gasket
spearco intercooler
2.5" charge pipes
gsr cams
hondata tuned
warlboro fuel pump
B&M fpr
aem fuel rail
tial wastegate
*probably forgot little things*

is this duable with my setup???
what else do i need for my setup??



Modified by queez at 10:38 PM 9/7/2003

alpha

With the setup you want why not go with a T04E SC61? I would go with an 84mm bore. Like my friend says "it's free power". Someone on here made 485whp with an 81mm bore and 515whp with an 84mm bore. They also reached full boost about 400-/+ sooner. I went with an 84mm bore.

ekb18c

if you go from 81mm to 83 then you will gain some power.

My suggestion for you guys is to stay 81mm for the simple fact of having more sleeve to play with. If you scar up your block while on 81mm you can go overbore size, but what if you scare up the block on 84mm? Well you can go 84.5mm and then the rest is up in the air. Do you want to try high boost with 85mm?

Compression is fine anywhere from 9:1 to 10:1.

Looks like you will need a bigger turbo. Go for a t3/60-1.

Rods stick with Crower or Pauter.

TeStUdO

Biggest bore i would go is 83mm. If you do 84 you dont leave alot of room for error

queez

bump

porsche997dc2

83mm is perfect. Not too big and not too small.

boosted92

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TeStUdO &raquo;</TD></TR><TR><TD CLASS="quote">Biggest bore i would go is 83mm. If you do 84 you dont leave alot of room for error</TD></TR></TABLE>

Agreed. @ 83MM you can still take sleeves out another full MM to 84, even 84.5 if need be. On a B16 you need all the displacement you can get, so i'd go with 83MM 9.5:1 pistons.

queez

nice thanks guys