93BlackFD

http://www.1131.net/pics/dan/DSCN1235.JPG

it has a 5mm bridge, what do you guys think?

BDC

That's perfectly thick enough. On the eybrow cut, extend its length and close its port timing at the same time the extend port closes.

B

93BlackFD

but i wanted the whole "half bridge" thing, this will be used with the stock FD twins for 6months or so...don't want to choke them

coldy13

A "half bridge" is when you bridge the secondary ports, and just street port the primaries.

93BlackFD

so no street porting the secondaries?

Manolis_D

iTrader: (2)

Street port everything, and only bridgeport the secondaries

93BlackFD

that was my understanding

Sponge Bob Square Pants

Yeah 5mm is plenty, very reliable for a bridgeported engine. Be sure to make the bottom of the bridge angled and rounded nice.

93BlackFD

yeah, i laid the rotor housing down so i could get a good path to follow

heb09

finally someone gives a definition of what a half bridge is thankyou!! and I have a full bridge w00000000t.

karism

Nice layout 93BLACKFD !!

5mm is plenty,will be reliable as well!
Half Bridgeport Turbo...now thats fun!
Karis

93 R1

Thats gonna choke the **** out of the stock turbos

Sponge Bob Square Pants

Offff! I didn't even notice till now it'll be with stock turbos for a while. Ouch.

93 R1

Actually I meant the turbos will choke the motor.

93BlackFD

we'll make modifications as necessary to the turbos, my predictions will be 380rwhp@14psi, anything beyond that will choke

but oh well, time for a single

Marcel Burkett

Half bridge is when , HALF the number of ports (2 on a four port motor ) are bridged , you can also have a halfbridge if you only port the primary ports !.

gambone

iTrader: (3)

I've done my own on both the older soft iorn and the new harder ones, the new ones take a lot of time, so much I'm not realy will to do it agen, just hand fileing the radesis in side that brige is a killer, high level a skill and patunt (spelling sucks). I would get a older one and just peractis frist. So any how for my self I likem big primary & seconderies and it idles at 3k and from there up it is most smoth and it is twin turbo, K injected

RotaryMagic

Could you essentially "sleep" an Rx-7 by keeping stock primaries and race porting and bridging the secondaries? This would have relatively good lowend and badass topend.

Gargamel

How would one start the bridgeport? Drill a bunch of holes in a line and connect them together with a dremel/ die grinder?

93BlackFD

that's what a half bridge is, only the secondaries are bridge'd, the primaries are just street ported and cleaned up

and yes, you drill holes and connect them for the bridge, although there a lots of techniques, this is the easiest