B16Civic93

Just curious if you built boosted b16 people bored out your motor or if you just kept the stock bore? and if you did bore it out do you think it was worth the money? wondering if i will get alot more torque than if i dont bore it out. let me know, thanks

b16sedan

84mm vs. 81mm is worth around 20 ft-lbs on a turbo motor. Worth it for a B16, IMO.

m R g S r

do you have dyno's showing numbers thast high? I don't think it's worth that much...unless you are talking about 300-400lb ft motors.....

FredoSP

<---- 84.5mm B16A2 .. so Its actually 1.71 L (Darton Sleeves)

tony n.

get erl to do your motor
put a gsr crank in it and the have a deckplate to make the block higher or whatnot
84mm with deckplace almost a 2.0 b16a i believe

Benjithx

i did 83mm on mine and Loved it

b16sedan

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by m R g S r &raquo;</TD></TR><TR><TD CLASS="quote">do you have dyno's showing numbers thast high? I don't think it's worth that much...unless you are talking about 300-400lb ft motors.....</TD></TR></TABLE>

http://www.boosted-hybrid.com/viewtopic.php?t=2088

It's worth a lot of mid range, Jeff says around 20 ft-lbs, so i'd guess it's around the same on a B16.

IMHO with a B16 it's worth it to go 84mm, but if I were building a B18-based motor i'd just stick to 81.5mm for safety's sake.

simike

Are you talking about a motor with aftermarket sleeves or a motor with stock sleeves?

B16Civic93

stock sleeves and block guard

b16sedan

The difference between 81 and 81.5mm is a grand total of 19.76 cubic centimeters, or about 1.2 cubic inches. That's not a big enough difference for you to notice any change in power.

simike

Stock sleeves and turbo = 81.5mm. Boost puts to much stress on the sleeves to go any bigger. The main reason for the .5mm overbore is to clean up the surface and make sure the sleeve is round.

Boostfed

Do 84mm and be happy

White Smoke

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Boostfed.com &raquo;</TD></TR><TR><TD CLASS="quote">Do 84mm and be happy </TD></TR></TABLE>
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B16Civic93 &raquo;</TD></TR><TR><TD CLASS="quote">stock sleeves and block guard</TD></TR></TABLE>
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81.5 is the most you should go bro.

mrbsponge

mine is built and still 81mm, i love it regardless!