Mazda Rotary Club

General => General Technical => Anything Engine/Performance/Tuning related => Topic started by: John_Hudson on April 19, 2008, 02:40:09 PM

Title: how streetable is a half bridge
Post by: John_Hudson on April 19, 2008, 02:40:09 PM
yet another Q - as above

what sort of rpm do you see power at, is it really a mega pig to drive low rpm and what sort of power gains are expected over stock & street ports

cheers

John
Title: how streetable is a half bridge
Post by: Bulla on April 19, 2008, 05:41:37 PM
From what I hear the worst part about the Bridge port on the street is the endless pockets you\'ll need for fuel, they are very thirsty.

Bulla
Title: how streetable is a half bridge
Post by: Jimjitsu on April 19, 2008, 06:13:35 PM
Its very streetable because it makes this noise brrrap brrrap brrrapp xD
Title: how streetable is a half bridge
Post by: BlitzBoy on April 19, 2008, 06:18:39 PM
naaa its how you tune them , I get on average 17mpg same as when I had my street port.
they main thing against a bridge is the high idle approx 1200-1500rpm and the louder exahsut note with the braap braap brapp

Main adavantages you get on boost quicker and makes for a good circuit car
I gained across the rev range an extra 20hp and made it earlier
Title: how streetable is a half bridge
Post by: BlitzBoy on April 19, 2008, 06:19:44 PM
also make sure you have a decent sized turbo, T04Z\\R as a minimum or T78
Title: how streetable is a half bridge
Post by: John_Hudson on April 19, 2008, 06:21:06 PM
is that on full or half bridge blitzboy? :)
Title: how streetable is a half bridge
Post by: BlitzBoy on April 19, 2008, 06:37:15 PM
Half bridge that way you can still use 2 piece apex seals, plus you can keep some kind of idle
Title: how streetable is a half bridge
Post by: John_Hudson on April 19, 2008, 06:38:57 PM
tidy cheers matey :)
Title: how streetable is a half bridge
Post by: G@NDY on April 19, 2008, 06:40:56 PM
Mmmmmmmmmmmm half bridge and T78, brapperty brap brap.
Title: how streetable is a half bridge
Post by: hairyhoover on April 19, 2008, 09:51:23 PM
blitz.... have you still got your t04z knocking around?
Title: how streetable is a half bridge
Post by: interloper393 on April 19, 2008, 10:51:54 PM
half bridge is the way id go when i rebuild a spare engine(when iv the time anywho)
Title: how streetable is a half bridge
Post by: strange_days_uk on April 20, 2008, 08:47:52 AM
Quote from: hairyhooverblitz.... have you still got your t04z knocking around?

Darren, how goes it, are you running in yet ?
Title: how streetable is a half bridge
Post by: hairyhoover on April 20, 2008, 09:11:03 AM
Hi Simon, yep im running again. Ive got a couple of small problems but nothing major.
 
Do you know what sping was in the wastegate? because it seems to boost way over 0.7 bar
 
The turbo is great spools very very early! It may even be to small for my ports so im enquiring about using a t04r or a t04z.
 
Sorry about the hijack chaps!
Title: how streetable is a half bridge
Post by: strange_days_uk on April 20, 2008, 09:22:22 AM
um dunno about spring, but pretty sure it was for 10 psi.  glad the setup is working well, that turbo always did spool well it must feel lightning quick (I hope so anyhow)
Title: how streetable is a half bridge
Post by: BlitzBoy on April 20, 2008, 12:20:46 PM
Quote from: hairyhooverblitz.... have you still got your t04z knocking around?
na its on Charlies car now my man