how much performance can you get from a 1990 prelude ?
04-04-2005, 06:34 PM
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how much performance can you get from a 1990 prelude ?
well i see these early preludes runin around my area all the time and there for sale cheap, i own a swapped crx but was wondering what the preformance on these are like and what times they run ? thanxs for the help i am just looking for options down the road from now thanks fro the input 
04-04-2005, 06:38 PM
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Re: how much performance can you get from a 1990 prelude ? (EFMAN)
04-05-2005, 06:37 AM
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Re: (ryanstev)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ryanstev »</TD></TR><TR><TD CLASS="quote">Engine swap, custom turbo or nitrous is the only practical way to make power sadly.
Nothing else seems to make much difference.</TD></TR></TABLE>
keep your CRX we're too heavy
Nothing else seems to make much difference.</TD></TR></TABLE>
keep your CRX we're too heavy
04-05-2005, 10:27 AM
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Re: (Matt5745767)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Matt5745767 »</TD></TR><TR><TD CLASS="quote">
keep your CRX we're too heavy</TD></TR></TABLE>
ya thats the feeling i had, but not to much is better than the rex , i might just get a lude to rally, maybe
keep your CRX we're too heavy</TD></TR></TABLE>
ya thats the feeling i had, but not to much is better than the rex , i might just get a lude to rally, maybe
04-05-2005, 10:30 AM
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Re: how much performance can you get from a 1990 prelude ? (EFMAN)
As much as your pocket allows.
Your easiest bet is to throw a b16a in there... or go with a 92 where your options are more plentiful.
Your easiest bet is to throw a b16a in there... or go with a 92 where your options are more plentiful.
04-05-2005, 01:55 PM
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Re: how much performance can you get from a 1990 prelude ? (PrecisionH23a)
b16 suck bud...over rated...i got more displacement out of my mountian dew bottle.
i roll a b21 powered one, its a factory motor no swap. the only swap available is the h22. and thats kinda hard now as the company that made mounts went under.
as for not being fast...how does a 12.49 on slicks sound, i hit that wiht a 90 shot of nitrous, not hard to do really. its a motor that has a long *** stroke 93mm, and makes more tq than most other honda motors out there. just doesnt have revvs. ti will out handle most other things given its relatively long wheel base and wide stance but it wont be faster in a straight line unless you hunt down a few parts. and you can make a good 50whp with a header IM, TB and exhaust/intake. just a heads up, im not lieing, you want a dyno graph i will try to track one down for you good luck
i roll a b21 powered one, its a factory motor no swap. the only swap available is the h22. and thats kinda hard now as the company that made mounts went under.
as for not being fast...how does a 12.49 on slicks sound, i hit that wiht a 90 shot of nitrous, not hard to do really. its a motor that has a long *** stroke 93mm, and makes more tq than most other honda motors out there. just doesnt have revvs. ti will out handle most other things given its relatively long wheel base and wide stance but it wont be faster in a straight line unless you hunt down a few parts. and you can make a good 50whp with a header IM, TB and exhaust/intake. just a heads up, im not lieing, you want a dyno graph i will try to track one down for you
good luck
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04-05-2005, 03:02 PM
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Re: how much performance can you get from a 1990 prelude ? (street_ruler)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by street_ruler »</TD></TR><TR><TD CLASS="quote">b16 suck bud...over rated...i got more displacement out of my mountian dew bottle.</TD></TR></TABLE>
It may lack displacement and torque, but there are more parts for that engine readily available. If you really want, I'll send you a dyno chart from my buddy terry's b16 that hit 688whp. Let me know when you get that much out of your b21.... I'll be here waiting.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by street_ruler »</TD></TR><TR><TD CLASS="quote">
as for not being fast...how does a 12.49 on slicks sound, i hit that wiht a 90 shot of nitrous, not hard to do really. </TD></TR></TABLE>
It sounds slow to be perfectly honest with you. Sorry, I'm used to cars that run 11's and lower.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by street_ruler »</TD></TR><TR><TD CLASS="quote">
and you can make a good 50whp with a header IM, TB and exhaust/intake. just a heads up, im not lieing, </TD></TR></TABLE>
riiiiiiiiiight.
It may lack displacement and torque, but there are more parts for that engine readily available. If you really want, I'll send you a dyno chart from my buddy terry's b16 that hit 688whp. Let me know when you get that much out of your b21.... I'll be here waiting.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by street_ruler »</TD></TR><TR><TD CLASS="quote">
as for not being fast...how does a 12.49 on slicks sound, i hit that wiht a 90 shot of nitrous, not hard to do really. </TD></TR></TABLE>
It sounds slow to be perfectly honest with you. Sorry, I'm used to cars that run 11's and lower.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by street_ruler »</TD></TR><TR><TD CLASS="quote">
and you can make a good 50whp with a header IM, TB and exhaust/intake. just a heads up, im not lieing, </TD></TR></TABLE>
riiiiiiiiiight.
04-05-2005, 05:02 PM
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Re: how much performance can you get from a 1990 prelude ? (street_ruler)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by street_ruler »</TD></TR><TR><TD CLASS="quote">and you can make a good 50whp with a header IM, TB and exhaust/intake.</TD></TR></TABLE>
...as long as the new IM has a 45 shot plumbed into it
...as long as the new IM has a 45 shot plumbed into it
04-05-2005, 06:09 PM
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Re: how much performance can you get from a 1990 prelude ? (PrecisionH23a)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PrecisionH23a »</TD></TR><TR><TD CLASS="quote">
It sounds slow to be perfectly honest with you. Sorry, I'm used to cars that run 11's and lower.
</TD></TR></TABLE>
[FEZ]that a burn![/FEZ] j/k
It sounds slow to be perfectly honest with you. Sorry, I'm used to cars that run 11's and lower.
</TD></TR></TABLE>
[FEZ]that a burn![/FEZ] j/k
04-05-2005, 06:42 PM
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Re: how much performance can you get from a 1990 prelude ? (SUB-0 H23)
heres the thing, when you hit about 4500 rpm the air/fuel ratio drops to about 11:1 and then will hit about 10.9:1, as it climbs. theres a real bottle neck in the motor and its the IM and the TB, i dynoed 8 whp and 6lbs tq with just a 60mm TB, from 55mm factory. then the intake manifold was tested with the TB and it was just smootherd out and the runners were opened up 2mm all around. it made a nice 19hp and changed the curve of the power band alot, made it more useable. then with the space i gained another 3hp, thats a 1/2in TB spacer with a helix cut into it.
the headers dynoed at 11, not because its magical but because the stock "octopus" is just an atrosity. find a b21 pic of a header and tell me its not a piece of crap.
the LS integra CAI was next, and it laid down 6hp on the dyno.
and the exhaust yeilded 1...kinda sad, but i think it had to do with a crappy few bends.
anyways you really wouldnt understand unless you own/work on one of these cars, they are way different than any other honda motor.
and as for running 11's, cool. too bad its in a dime a dozen civic
the headers dynoed at 11, not because its magical but because the stock "octopus" is just an atrosity. find a b21 pic of a header and tell me its not a piece of crap.
the LS integra CAI was next, and it laid down 6hp on the dyno.
and the exhaust yeilded 1...kinda sad, but i think it had to do with a crappy few bends.
anyways you really wouldnt understand unless you own/work on one of these cars, they are way different than any other honda motor.
and as for running 11's, cool. too bad its in a dime a dozen civic
04-05-2005, 08:29 PM
#12
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Re: how much performance can you get from a 1990 prelude ? (street_ruler)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by street_ruler »</TD></TR><TR><TD CLASS="quote">and as for running 11's, cool. too bad its in a dime a dozen civic </TD></TR></TABLE>
There is a shot of my prelude 2 years ago back when it only had 450whp. Does this count as being a dime a dozen?
As far as a civic being a dime a dozen, as long as it runs 10's who the **** cares what type of chassy it is? Speed will never go out of style. I now have an EK drag car that this engine is going in... and you know what? I could be different and molest my prelude so it could run 10's.... but a civic is so much easier. Steve Oaks has yet to break into 10's and he has a surplus of 700whp. Yes, he is out on the west coast... but you get my point. Why **** in the wind when all you have to do is turn around so your **** travels away from you instead of in your face? When it comes down to money... being 'different' can only get you so far.
Back to your AF ratio's... I had no clue those engines ran that extremely rich. Care to extrapolate on the reasoning for the excessive fueling as well as the differences in that engine and others? I am interested.
</TD></TR></TABLE>There is a shot of my prelude 2 years ago back when it only had 450whp. Does this count as being a dime a dozen?
As far as a civic being a dime a dozen, as long as it runs 10's who the **** cares what type of chassy it is? Speed will never go out of style. I now have an EK drag car that this engine is going in... and you know what? I could be different and molest my prelude so it could run 10's.... but a civic is so much easier. Steve Oaks has yet to break into 10's and he has a surplus of 700whp. Yes, he is out on the west coast... but you get my point. Why **** in the wind when all you have to do is turn around so your **** travels away from you instead of in your face? When it comes down to money... being 'different' can only get you so far.
Back to your AF ratio's... I had no clue those engines ran that extremely rich. Care to extrapolate on the reasoning for the excessive fueling as well as the differences in that engine and others? I am interested.
04-05-2005, 08:52 PM
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Re: how much performance can you get from a 1990 prelude ? (PrecisionH23a)
the air fue; ratios were taken from a tail pipe sniffer while on the rollers.
as for the reason why, i have no idea. it seems that honda would know this or somthing. but they seem to have done nothing about it. i have dynoed about 5 preludes all 88-91 and all exhibit the same ratios abover 45-4700 rpm. its obvious that its a lack of air, because when you open up the manifold and the TB and hotside, everything seems to come back to some what stoich, a bit richer than 14.7 but still more along the norms for a prelude, tehy all seem top be a few hundredths rich.
as for the differences in the motors, well its got a long *** stroke...93mm and an 83 or 81mm bore, depending on the b21 or b20/b20a5. the b21 was the first to have teh FRM cylanders and it ws really problematic. the mixture wasnt that great untill late in production of the 91's they changed their casting procedures and such to get it right. all the b21's before the june production 91's were oil burners, mine was one of the last and burns no oil.
it also seems to be a motor that was a staging ground for alot of other motors, for example, we have the long stroke...h22's share that...FRM h22 again, along with s2k(i think dont quote me on that) and the NSX. also the cams are the same as b18 cams just a tad shorter on teh cam gear side, the rod bolts come form a b18 and head studs from a h23, ect ect ect, so its more like a "trail" motor for honda, or atleaset they learned alot from em.
the reason for that FRM was to keep the thinner metal stronger, tehy took the b20 block and bored to get the b21 and thus made the cylander walls thiner, and needed a couter to that.
and on the air/fuel ratios again, the motors all have 235cc injectors which seems kinda over kill for that car unless FI...which its not. i cant really see as to why honda didnt do the simple things like use a bigger TB or use a better header/exhaust manifold. its almost as if they were sandbagging to draw attention from the prelude to hype up the NSX, as it was released in 90...and preludes were the flag ship sports car till the NSX. i dunno one can only speculate.
as for the reason why, i have no idea. it seems that honda would know this or somthing. but they seem to have done nothing about it. i have dynoed about 5 preludes all 88-91 and all exhibit the same ratios abover 45-4700 rpm. its obvious that its a lack of air, because when you open up the manifold and the TB and hotside, everything seems to come back to some what stoich, a bit richer than 14.7 but still more along the norms for a prelude, tehy all seem top be a few hundredths rich.
as for the differences in the motors, well its got a long *** stroke...93mm and an 83 or 81mm bore, depending on the b21 or b20/b20a5. the b21 was the first to have teh FRM cylanders and it ws really problematic. the mixture wasnt that great untill late in production of the 91's they changed their casting procedures and such to get it right. all the b21's before the june production 91's were oil burners, mine was one of the last and burns no oil.
it also seems to be a motor that was a staging ground for alot of other motors, for example, we have the long stroke...h22's share that...FRM h22 again, along with s2k(i think dont quote me on that) and the NSX. also the cams are the same as b18 cams just a tad shorter on teh cam gear side, the rod bolts come form a b18 and head studs from a h23, ect ect ect, so its more like a "trail" motor for honda, or atleaset they learned alot from em.
the reason for that FRM was to keep the thinner metal stronger, tehy took the b20 block and bored to get the b21 and thus made the cylander walls thiner, and needed a couter to that.
and on the air/fuel ratios again, the motors all have 235cc injectors which seems kinda over kill for that car unless FI...which its not. i cant really see as to why honda didnt do the simple things like use a bigger TB or use a better header/exhaust manifold. its almost as if they were sandbagging to draw attention from the prelude to hype up the NSX, as it was released in 90...and preludes were the flag ship sports car till the NSX. i dunno one can only speculate.
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