Rotary Car Performance General Rotary Car and Engine modification discussions.

Halfbridge porting

Old May 4, 2005 | 07:59 PM
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Halfbridge porting

Ok i got a big question about half bridge, what's the dissadvantages and advantages of it against the good old huge street port? Has anybody compared the powerband against the two types of porting? Just wanting to know if is worth doing a half bridge when you could do the same job with a street port. Has anybody boosted a halfbridge past 25 psi and see what the advantage of it is against a street port. Anyone, feel free to discuss, unless it was discussed already in this forum already.
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Old May 4, 2005 | 08:07 PM
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Only way to make 500+ is to run them dangerously lean and attribute it all on the awesome porting. :hehe:

Last edited by r0gu3; May 4, 2005 at 08:14 PM.
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Old May 5, 2005 | 02:14 AM
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Hey Javi, toss me an IM dude. I'll explain it to you.

B
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Old May 5, 2005 | 03:14 AM
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Ok, i will tomorrow
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Old May 5, 2005 | 06:02 AM
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Originally Posted by javrosario
Ok i got a big question about half bridge, what's the dissadvantages and advantages of it against the good old huge street port? Has anybody compared the powerband against the two types of porting? Just wanting to know if is worth doing a half bridge when you could do the same job with a street port. Has anybody boosted a halfbridge past 25 psi and see what the advantage of it is against a street port. Anyone, feel free to discuss, unless it was discussed already in this forum already.
Only downsize I see to BP, is not passing emissions
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Old May 6, 2005 | 04:42 PM
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bp's are awesome through the mid-range and top end.
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Old May 9, 2005 | 12:50 AM
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Originally Posted by KNONFS
Only downsize I see to BP, is not passing emissions
Good thing I live in Alabama. lol
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Old Sep 14, 2021 | 09:47 AM
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in most states if your car is over 30 years old it no longer needs emissions testing, and in some its 20
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Old Sep 14, 2021 | 11:36 AM
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except that discussion was 16 years ago, necro-master ...
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Old Sep 14, 2021 | 12:02 PM
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i still have to smog it
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Old Sep 14, 2021 | 04:27 PM
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Originally Posted by TeamRX8
except that discussion was 16 years ago, necro-master ...
This bump is old enough to apply for a driver's license 🤣
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Old Sep 16, 2021 | 07:02 AM
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Originally Posted by j9fd3s
i still have to smog it

facing the same problem on an RX8 with REWT BP conversion

here in TX the emissions requirement falls off on the 25th year after production, which is 2029. Not sure I’ll live that long, let alone for life as we now know it to even still exist by then given the trending of events over the last few years …

come Lord Jesus, come …
.
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Old Sep 16, 2021 | 09:14 AM
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From: https://www2.mazda.com/en/100th/
Originally Posted by TeamRX8
facing the same problem on an RX8 with REWT BP conversion

here in TX the emissions requirement falls off on the 25th year after production, which is 2029. Not sure I’ll live that long, let alone for life as we now know it to even still exist by then given the trending of events over the last few years …

come Lord Jesus, come …
.
my couch has a C.A.R.B. sticker on it!

i thought couch pollution was when you had too many on the street corner, cause people are leaving!
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