Whats the biggest i can go port wisewhen running stock mazda two peice seals? Ive got LOADS of decent stock apex seals, and wanna build a motor over the left over parts.
Ive been told because of the second, smaller apex seal part they will end up in the inlet port on a bridge.
So what about running with bridgeports on the centre plate and a decent sized extend or street port on the front and rear plates? then surely you can run stock triangular peices nearest the two streetports, and the larger apex seals dont come fall into the bridgeports? has anyone done this with success??

Cheers for the help

Steve

 

You can run a small bridge on the 2nd seal side. It just needs to support the seals edges. Probably more reliable than a Rally port.

 

Yes, but bridgeport the end plates and street port the centre plate.

 

why don't you make some plexiglas templates, then use your judgment. no guessing. no approximations. much easier than trying understand what we try to convey over the Internet, i think.

 

whys this? just preference? or is it something to do with the way the rotors go in?

Steve

 

End irons have far more runner area than the center iron, so bridgeporting them will end up working better because the runners can better keep up with additional flow.

 

Peeeee-ripheral.

 

 

not the bigger , but big size

 

I guess I wasn't clear enough in my last post. If you are careful you can bridgeport all four intake ports. The ones that see the side of the apex seal with the corner piece needs more care to support on both ends of this piece.
Like 13btnos did in this pic:
https://www.rx7club.com/attachment.p...hmentid=204269

The side seal is supported as well as the corner and apex seals. Some big streetports don't support the side seal.

For more about the above link see:
https://www.rx7club.com/rotary-car-performance-77/rew-monster-street-port-specs-593029/