small bridge 12a/stock nikki

[sen2two]

Originally Posted by RotaryProphet

My real point is that a bridge on a stock port is going to be slower -and- much less drivable than a large streetport. Why is he dead set against porting the stock ports?

well, hes a rookie to rotarys. and like most rotary new comers. they all want the brap, brap, brap sound...

im going to open the runners for him and do a decent exhaust port. nothing wild. Im pretty sure the drivability will be there and there will be gained power. im just thinking his stock nikki will have a hard time flowing the fuel it needs.

[Rogue_Wulff]

Originally Posted by sen2two

well, hes a rookie to rotarys. and like most rotary new comers. they all want the brap, brap, brap sound...

im going to open the runners for him and do a decent exhaust port. nothing wild. Im pretty sure the drivability will be there and there will be gained power. im just thinking his stock nikki will have a hard time flowing the fuel it needs.

The stock nikki will not be able to flow enough air to feed even a mild street port to it's fullest potential. A sterling modded nikki can.
The bridges won't help much unless the intake ports are opened up for more flow. The port timing on stock ports can flow more than the port runners allow, but that's not a big issue on a stock 12A, since the exhaust ports are the main bottleneck.
Using a 4bbl carb, a 1/2 BP will idle without the brappy nature, since it runs off the primary ports until the carb secondaries open. On the other hand, a webber-type 2bbl will have the diminished idle and driveability commonly associated with a BP engine.

Personally, if not opening up the existing ports to at least a moderate SP size, I'd say doing a bridge cut would be a waste of time. Any gains that could come from the bridgeports, would be lost to the limited stock ports. Especially if the exhaust ports aren't opened up enough.