i was talking to one of my co workers and he was telling me about something they used to do in puerto rico with the rotery engines. he said translated to english it was called double bridging. he wasn't quite sure on how it was accomplished but he says you custom cut the roters to make more cumbustion chambers. the whole process confuses me, but i would like to learn more about this and maybe even try it out (depending on how hard it is to do). if anyone knows about this process please share as much info as possible, or if you know a website that explains the whole process that would be great to.

 

Rotor chamfering or scalloping. SEARCH for it.

~Mike..........

 

also search using "rotor bevel*" - there was a pretty long thread in the Gen II section a couple years go. i think it was started by the user 88integrals - but i may be wrong on the name.

 

Im not sure if your talking about "bridge porting"(cause your wording,"double bridging") or "rotor beveling" etc... or both.
But there both different "upgrades".

 

by the way, i only responded about "bevel" search because of RacerXtreme7's post, just to help with your searching. i've never heard of "double bridging"

 

maybe he meant Full bridgeport, when you bridge both the primary and auxillary ports

beveling is when you take level off the corner of the rotor where it meets the intake ports

 

no, i know what beveling is. yeah, in this world where everyone is half-bridging, i guess i can see how one might refer to a full bridge as a "double"-bridge.

 

what he meant was a peripheral port! it is very difficult and high maintnence! however your engine would be idling at around 8 to 9 thousand rms at all times

 

9k idle? What are you talking about?

 

i think he's smoking the good ****.

 

^
^
^
wow.

 

In my life I try to follow a few simple rules.

One of those rules are: If you dont know what you are talking about, dont talk about it.



BC

 

AMEN

 

no this is serious! that is what they do in puerto rico! and they go carbuerators! having the engine making a loud "brap, brap, brap, brap, brap" sound

 

Nows a good time to quit.



~Mike...........

 

+1

Pedro, do you even own a rotary powered car or do you like totally screwing up what people tell you? do you really think a car is going to make a BRAP BRAP BRAP sound at 8-9k RPMs? look at your tachometer next time and think about it.

 

What is it with these Floridians and being stupid? First the guy who claimed he ran a 12.6 on the stock turbo with a modified N/A ECU, and now this?

 

actually I might've been on the good ****, however i did re-do my research and with a peripheral port the engine will idle at 3000 rpms, but don't make ANY power until 7500. The useable power band is 8000-9500rpm. Peak power is around 300.
sorry for the aggrevation and i do deserve a smack on the head.

p.s- I got my info from mazdatrix.

 

pedro explained it just like it was explained to me. with the brap noise and everything. accoding to my puerto rican friend that i work with bridging (countless names for it in this forum now) was a technique used by the japanese and when people in puerto rico learned about it they redesigned it to make it better. the one thing i was looking for was the exact specs on it. i have a gtu and a parts car that doesn't have an engine. i was going to do the turbo II swap to the gtu and i wanted to try this thing out with my old N/A engine and put it in the parts car. so i'm looking for measurements and exact specs on how to obtain this "double bridging" thing.

 

I knew I wasn't entirely crazy! I've seen some pics on hows it done so i'll see if i can find them for you

 

Since you're bashing Floridians and I live in Florida!
You don't believe it's possible to run 12's with a stock ecu, stock motor, stock intercooler and stock turbo in a 2nd gen?
Just for your info I've done a couple and there are many more here that I have seen.

 

Very true, it takes a very good driver, some traction, and some boost, but it's possible. I've seen a couple runs and I've pulled off a 13.1 with not my best launch in the world with an old FC.

 

here's a pic of a housing with a peripheral port and an engine!

 

Yes... we all know what a peripheral port is...

FYI there are different types of peripheral port, some of which will make decent power in the mid-RPM range. They also don't all idle at 3k RPM.