I just picked up an 81 FB with a street ported engine. It has a jetted Niki and Racing Beat header and exhaust.

I'm looking at a 45 DCOE Weber and Racing Beat manifold. it has been suggested that I would need a 47mm to meet the needs of a street port.

I know little to nothing about rotaries, so any help would be appreciated.

Thanks,
Todd

 

No idea myself but you'd better be ready for jet tuning and how to do it properly when you step into the down/side draft carburetor world. Let's see if any 1stgen carb guru's are back from Church yet.

 

I'll just hold off for a while. I really don't need to get in over my head. The car runs fine like it is.

 

Not a bad idea. That combination, especially if the exhaust has been upgraded, should be a stout, fun combination. Now it's time to go after the suspension!

 

if ur a stickler for decent mileage, the nikki ur currently running will yield better mileage than a weber will.

 

The guy that turned me on to RX-7's has a set of Racing Beat springs for the FB.

I still need tires. The ones on the car are more than 6 yrs old. I'm struggling with whether or not to go up to 15" wheels.

 

Well, I'm glad I didn't spend money on a carb set-up.

I blew a hole out the side of my engine.

 

How the heck is that possible? It's not like you have a connecting rod or pieces of valve to ventilate the block.

Wa happnd? Whaddya see? Pics?

 

I posted some pics on a different thread, "12a detonated". It seems I know a guy that was a Mazda instructor in a past life. He seemed certain that it was the stationary gear that failed.