boosted stock sleeve b20?
06-24-2007, 01:48 PM
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boosted stock sleeve b20?
i had an all motor stock sleeve b20 and the wristpin ended up scratchin up the cylender walls so im gettin another block and some low compression pistons just tryin to find out how many people are running pushing boost on stock sleeve b20vtecs
no problems at all. turbo = t3t4
06-24-2007, 06:30 PM
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Re: (primetime)
i think it has been told way too many times not to talk in terms of psi's... its not how much psi can u run its more of how much power it makes...
most likely at 15 psi u aint close to 400whp while some engines are well over it...
most likely at 15 psi u aint close to 400whp while some engines are well over it...
06-24-2007, 07:23 PM
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Re: boosted stock sleeve b20? (del_slow420)
from what i was told and no im not on any honda-tech bandwagon this what my mechanic told me. on a b20 bottom end he wouldnt recommend boosting no more then 8-10lbs on a b20 bottom end cause of the sleeves being weak and cracking under boost. so what i did is i got a ls block wit forged internals and i can boost up to 16lbs safely and if i ever want a b20 jus bore my ls to a 84mm bore and sleeve it. so if you do stay wit the b20 i wouldnt boost over 9lbs, but a friend of mines has a b20v in his coupe and made 325whp on 8lbs of boost. jus my suggestion
06-25-2007, 01:10 AM
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Re: (chris_tune)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chris_tune »</TD></TR><TR><TD CLASS="quote">i think it has been told way too many times not to talk in terms of psi's... its not how much psi can u run its more of how much power it makes...
most likely at 15 psi u aint close to 400whp while some engines are well over it... </TD></TR></TABLE>
your right, at 15 psi I make 330 hp at the wheels. Not near 400 whp, but a very fun dd street car that sees 600 miles per week commutes. It has never given me problems. Granted I know I am on the edge of safe power available on a stock internal motor, but the limiting factor is not the sleeves, which everyone says, it is the rods. With forged internals (rods+pistons) and a conservative tune I am confident that a goal of a low 400 hp stock sleeved b20 is possible, and as soon as I get off of my current deployment I will be building it.
most likely at 15 psi u aint close to 400whp while some engines are well over it... </TD></TR></TABLE>
your right, at 15 psi I make 330 hp at the wheels. Not near 400 whp, but a very fun dd street car that sees 600 miles per week commutes. It has never given me problems. Granted I know I am on the edge of safe power available on a stock internal motor, but the limiting factor is not the sleeves, which everyone says, it is the rods. With forged internals (rods+pistons) and a conservative tune I am confident that a goal of a low 400 hp stock sleeved b20 is possible, and as soon as I get off of my current deployment I will be building it.
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06-25-2007, 02:29 AM
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Re: (chris_tune)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chris_tune »</TD></TR><TR><TD CLASS="quote">most likely at 15 psi u aint close to 400whp while some engines are well over it... </TD></TR></TABLE>
It's not just the engine but also the turbo that has to do with it. A 35r @ 10psi will put out a LOT more power than a straight t3 at the same 10 psi of boost.
Engine flow (n/a) = (Max rpm X Displacement (in ci) X Ev (volumetric efficiency)]/3456
So for n/a your max revolutions, displacement and volumetric efficiency will all affect how much air your engine will flow. More air flow = more power (in general).
To the op, power level should be your concern, not boost pressure like has been stated. If your gonna leave it stock and are on a budget get an ls and boost it. Your b20 head should fit fine on an ls block. If I were you I would run the thicker stock ls sleeves than the b20 sleeves. Bone stock many people push 300whp, I would stick to a safer 260-280whp or so. If your gonna build it then get rods AND pistons at the very least, not just pistons. Stock or semi-built I would go with the ls. There are people who have good results with the b20's but if you are going stock block, there is no point in doing a b20 imho. GL.
It's not just the engine but also the turbo that has to do with it. A 35r @ 10psi will put out a LOT more power than a straight t3 at the same 10 psi of boost.
Engine flow (n/a) = (Max rpm X Displacement (in ci) X Ev (volumetric efficiency)]/3456
So for n/a your max revolutions, displacement and volumetric efficiency will all affect how much air your engine will flow. More air flow = more power (in general).
To the op, power level should be your concern, not boost pressure like has been stated. If your gonna leave it stock and are on a budget get an ls and boost it. Your b20 head should fit fine on an ls block. If I were you I would run the thicker stock ls sleeves than the b20 sleeves. Bone stock many people push 300whp, I would stick to a safer 260-280whp or so. If your gonna build it then get rods AND pistons at the very least, not just pistons. Stock or semi-built I would go with the ls. There are people who have good results with the b20's but if you are going stock block, there is no point in doing a b20 imho. GL.
06-25-2007, 04:02 AM
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I cracked my b20 @ 11psi making 349whp. tuned by Ma$e and all it took was one chilly night and it let go.
and to the guy who said the rods were the weak part, maybe on any other motor, but on b20's its the sleaves, they have a different design and made of a different material, they are weak, proven many times.
and to the guy who said the rods were the weak part, maybe on any other motor, but on b20's its the sleaves, they have a different design and made of a different material, they are weak, proven many times.
06-25-2007, 04:20 AM
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Re: (2redstars)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 2redstars »</TD></TR><TR><TD CLASS="quote">I cracked my b20 @ 11psi making 349whp. tuned by Ma$e and all it took was one chilly night and it let go.
and to the guy who said the rods were the weak part, maybe on any other motor, but on b20's its the sleaves, they have a different design and made of a different material, they are weak, proven many times.</TD></TR></TABLE>
I think you might be confusing b20 sleeves with h22 sleeves.
and to the guy who said the rods were the weak part, maybe on any other motor, but on b20's its the sleaves, they have a different design and made of a different material, they are weak, proven many times.</TD></TR></TABLE>
I think you might be confusing b20 sleeves with h22 sleeves.
06-25-2007, 06:10 AM
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Re: (KeyserSoze)
yea i had a all motor b20 that has brand new bearings rods and pistons but the wrist pen slid over and killed my block and since i have to get forged pistons im just gonna get some 9:1comp and boost and its gonna be a b20vtec i already have the head and vtec kit all i need is a head gasket
i plan to run the peak boost kit as i know someone with one that makes decent power on his lsvtec..
i plan to run the peak boost kit as i know someone with one that makes decent power on his lsvtec..
06-25-2007, 01:53 PM
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Re: (del_slow420)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by del_slow420 »</TD></TR><TR><TD CLASS="quote">i plan to run the peak boost kit as i know someone with one that makes decent power on his lsvtec..</TD></TR></TABLE>
peakboost
and with tempest tuning it when its done you will have a nasty little street car my friend
peakboost
and with tempest tuning it when its done you will have a nasty little street car my friend
06-25-2007, 03:29 PM
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Re: (jewpont)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jewpont »</TD></TR><TR><TD CLASS="quote">is it possible to just buy stronger sleeves for the b20?</TD></TR></TABLE>
yes it is however it cost like 50 dollars more to get it sleeved. What most people do is get a ls block and put 84 mm sleeves in it. It ends up being a b20 after that.
yes it is however it cost like 50 dollars more to get it sleeved. What most people do is get a ls block and put 84 mm sleeves in it. It ends up being a b20 after that.
06-25-2007, 07:45 PM
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Re: (primetime)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by primetime »</TD></TR><TR><TD CLASS="quote">
yes it is however it cost like 50 dollars more to get it sleeved. What most people do is get a ls block and put 84 mm sleeves in it. It ends up being a b20 after that.</TD></TR></TABLE>
Huh??
Hehe, getting real sleeves put in will cost you at least $750. That's if you want it done by a reputable person/shop.
Run the b20 if you want but there really is no point. Maybe a little bit faster spool, but with stock internals/sleeves you will hit the same wall, power wise that is. Ok, that's the last time I even try in this thread.......
yes it is however it cost like 50 dollars more to get it sleeved. What most people do is get a ls block and put 84 mm sleeves in it. It ends up being a b20 after that.</TD></TR></TABLE>
Huh??
Hehe, getting real sleeves put in will cost you at least $750. That's if you want it done by a reputable person/shop.
Run the b20 if you want but there really is no point. Maybe a little bit faster spool, but with stock internals/sleeves you will hit the same wall, power wise that is. Ok, that's the last time I even try in this thread.......
06-25-2007, 11:24 PM
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Re: (KeyserSoze)
sorry I should have been a little clearer on that basically it is more expensive to sleeve a b20 vs. and ls. like the poster before me said it will cost like 750 or so to sleeve a ls. I think the b20 is like 50 dollars more then the ls. sorry for the confusion. KeyserSoze thanks for bringing that up I really did not proof read that.
06-29-2007, 06:30 PM
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Re: (KeyserSoze)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by KeyserSoze »</TD></TR><TR><TD CLASS="quote">
It's not just the engine but also the turbo that has to do with it. A 35r @ 10psi will put out a LOT more power than a straight t3 at the same 10 psi of boost.
</TD></TR></TABLE>
sorry true my bad... replace engine with setups
It's not just the engine but also the turbo that has to do with it. A 35r @ 10psi will put out a LOT more power than a straight t3 at the same 10 psi of boost.
</TD></TR></TABLE>
sorry true my bad... replace engine with setups
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