turboteg185

Will a stainless steel ring around the top of each cylinder with a copper head gasket stop by problem with boosting such a big bore? I really don't want to sell my bottom end and start from scratch because i went with such a big bore.
Thanks

tannerLSt

all i can say, is you have big *****

that thing is gonna blow and you'll have to start all over anyways...

ninesecrx

You are probably going to have problems getting a o-ring groove machined in the deck for that large of bore.

tokesGTR

Sell the block and get a new one!

You don't want to start again, but that's exactly what you're going to have to do anyways when you can't seal headgaskets. Better to sell it now as a new block and get some more money for it rather than selling it as a used block.

turboteg185

Good call it just sucks having to start over expecially during lay off season. Is the head gasket not sealing the big problem or is it that there's not enough cylinder?? just so i know for further referance.

tannerLSt

ya headgaskets would be a big problem, not including if you ever blow the thing... the block is done with.. can't bore it out any more and rebuild... 83-84mm is your best bet, gives you room to rebuild if and when it does blow...

ninesecrx

Who sleeved the block? Some companies will actually re-sleeve the block for less then the original price of the sleeve job since some of the work is already done like cutting out the stock sleeve. Plus you would just be wasting money on pistons if it did not work out for you.

fmfkid250

87mm is getting thin, assuming its a b series.

Its really not worth it..IMO

HiProfile

IIRC most companies recommend 86mm for NA, 84mm for boost, assuming its for a b-series. It would probably make 300whp fine, but what you may have gained from the extra displacement has been traded for strength.

There have been many 81-83mm sleeved motors that have made LOTS of power by using the right turbo & supporting parts. 87mm is definately overkill, unless its for the stock CR-V chassis that's been modded with 36" swappers, roll/light bars, winches, etc for off-road use. A fast boosted civic/teg rarely needs more than 84mm.

As mentioned, it would be easier and cheaper in the long run to sell the block and start over, rather than trying it and blowing it up. FYI people usually o-ring Honda blocks with a MLS stainless headgasket and copper wire. Its the other crowds like BMW guys that use stainless wire and a stock headgasket. O-ring material under a MLS HG needs to be able to crush a bit.

MidwestAutoWorks

Is this just because it is a b Series?

My block is at GE getting sleeved to 89MM which is 2mm overbore.

fmfkid250

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MidwestAutoWorks &raquo;</TD></TR><TR><TD CLASS="quote">Is this just because it is a b Series?

My block is at GE getting sleeved to 89MM which is 2mm overbore.</TD></TR></TABLE>

Do you have an H series?

blinx9900

is the block step decked? that will help your HG seal but like everybody says, it might not be worth it if it never seals...

140sx

f20c s2000 has a bore of 87mm factory, but then again there is a smaller stroke.

MidwestAutoWorks

f20c s2000 motor.

twkdCD595

you are ok, they are talking about b series which at 87mm have very thin walls.

us f series or h series people start with bigger bore, from 85mm to 87mm.

CerealKiller

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ninesecrx &raquo;</TD></TR><TR><TD CLASS="quote">Who sleeved the block? Some companies will actually re-sleeve the block for less then the original price of the sleeve job since some of the work is already done like cutting out the stock sleeve. Plus you would just be wasting money on pistons if it did not work out for you.</TD></TR></TABLE>
Great point, I know GE does this.
OP, who sleeved your block to that mm? Why wouldn't they suggest anything smaller?

turboteg185

yes it's a b18 ls block