retodd1000

iTrader: (1)

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

mar3

iTrader: (8)

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.

retodd1000

iTrader: (1)

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.

mar3

iTrader: (8)

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!

rxtasy3

iTrader: (2)

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

retodd1000

iTrader: (1)

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.

retodd1000

iTrader: (1)

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

I blew a hole out the side of my engine.

mar3

iTrader: (8)

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?

retodd1000

iTrader: (1)

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.