sa90eg

will the stock b20 sleeves hold up
85mm
(some 10-1 je pistion i have laying around)
will add v-tec...
skunk 1 cams ,mani,gears
jdm header
hondata
310's
ect.......

yes or no

the g2 teg

no the walls would be way to thin

beerbongskickass

People have cracked the stock 84mm sleeves. B20's are a waste of time if you ask me, but no matter what you end up doing tuning is the key.

rodimus

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by beerbongskickass &raquo;</TD></TR><TR><TD CLASS="quote">People have cracked the stock 84mm sleeves. B20's are a waste of time if you ask me, but no matter what you end up doing tuning is the key.</TD></TR></TABLE>

waste of time? tell that to omniman

sa90eg

anyone did this befor

CRVTEC0WNZJ00

I'm running 84.5mm bore stock sleeves, seen 9000rpm several times only 730 something miles on the engine and a basic street tune to run everything rich so I won't detonate. No problems yet.

h22blazerz5

waste of time???????????

beerbongskickass

Yeah that's what I said. They are worthless for boost and people crack the sleeves with high c/r all motor setups as well. Tuning helps, but the design of the sleeves just suck.

http://dwolsten.tripod.com/articles/jan96a.html

2.2motore

im running 85mm on stock sleeves no problems yet.

DOMKID

iTrader: (1)

I think 85mm is pushing it. I know a friend of mine ran 84mm stock sleeves with 13.1 compression and block guard for about 3 years(~35,000miles) with no problems.


Modified by Felix. at 8:55 PM 1/28/2006

0VtecKiDD

i have seen stock sleeves hold 9000+rpms with 12:1+ compression for extended amounts of time (like 300+engine dyno pulls)

i have seen boosted 300+whp stock b20 sleeves hold for 20K miles.

i believe omnimans original B20 lasted 40K+miles

hardly a WASTE of time.

85mm, im not sure about that. 84.5mm is the biggest i have seen on stock b20sleeves

jt-sport

how about stock rods?? how high rev it can handle??

WAFFLES

While I disagree about the blocks being a complete waste, he does have valid points. I just think for simple street motors: lower boost, or mild compression and a good tune on either setup, is key.

If someone desires a cost effective 200whpish motor, they are just fine.

Back to topic, please dont further compromise the integrity of the sleeves on these motors by overboring them. I'm not even a fan of a slight overbore on them. Even a helms manual says to junk them after they become out of round.

StorminMatt

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by WAFFLES &raquo;</TD></TR><TR><TD CLASS="quote">While I disagree about the blocks being a complete waste, he does have valid points. I just think for simple street motors: lower boost, or mild compression and a good tune on either setup, is key.

If someone desires a cost effective 200whpish motor, they are just fine.</TD></TR></TABLE>

I agree. A simple B20 swap is a GREAT swap if all you want is a good, streetable torque. And such a motor can last a REALLY long time. Mine is still going strong after almost four years of hard use.

Veris

I ran 85mm JE 10.5:1 piston on stock b20 sleeves. I didn't rev past 8200 though.
The walls are thin and the RS ratio produces large side wall loads so I'd keep the revs well below 9k.

Only problem with running 85mm is that you can't bore anymore out. You'll have to resleeve the block after.

Good luck.

CRXEE8

My 85 mm. stock sleeve B20VTEC did not last long

TOR

What if you post the block?

bnut510

never boost on a b20 block unless its sleeved... i wouldnt

WAFFLES

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bnut510 &raquo;</TD></TR><TR><TD CLASS="quote">never boost on a b20 block unless its sleeved... i wouldnt</TD></TR></TABLE>

I've seen a few boosted b20s do fine. I wouldn't push the limits though. 10psi daily is plenty with the proper turbo and a good tune.

bnut510

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by WAFFLES &raquo;</TD></TR><TR><TD CLASS="quote">

I've seen a few boosted b20s do fine. I wouldn't push the limits though. 10psi daily is plenty with the proper turbo and a good tune.</TD></TR></TABLE>


yeh a few.. dont get me wrong, its possible but i wouldnt do it personally. i like to play it on the safer side.

jt-sport

how is the stock rods max revs?? i got a stubborn costumer that want to use stock b20 rods with 85mm bore on stock slevees. and sk2 pro stg2 camshaft

Power Rev Racing

The guy Bserious that has all those videos of his crx is 85mm with 13:+ comp on stock b20 walls and stock rods

desert eagle

my boy ran 11.1:0 endyne pistons in his 85mm b20vtec (stock sleeves) for over a year. still a tickin. besides 10:1 isn't all that high n-e ways. just don't run it lean you'll be good. good luck.

thawley

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CRXEE8 &raquo;</TD></TR><TR><TD CLASS="quote">My 85 mm. stock sleeve B20VTEC did not last long </TD></TR></TABLE>
But how did it fail? Was it a cracked cylinder wall???

CRXEE8

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by thawley &raquo;</TD></TR><TR><TD CLASS="quote">But how did it fail? Was it a cracked cylinder wall???</TD></TR></TABLE>

Yeah 3 cracked sleeves