Half Bridge Exhaust Port Timing
#41
Originally Posted by Travis R' date='Feb 25 2004, 02:32 PM
Thanks for the link.
That's why I thought an aux. bridge would work well. Good low/mid range with the ports closed then a pretty good top-end with the ports open... the problem is I can't make it work with the stock manifold.
So the basic dillema becomes: Is the weight penalty worth the trade off of driveability. It's very close in my mind, but I honestly don't know what kind of midrange power I'm looking at. I've only drive rotaries a couple times.
That's why I thought an aux. bridge would work well. Good low/mid range with the ports closed then a pretty good top-end with the ports open... the problem is I can't make it work with the stock manifold.
So the basic dillema becomes: Is the weight penalty worth the trade off of driveability. It's very close in my mind, but I honestly don't know what kind of midrange power I'm looking at. I've only drive rotaries a couple times.
That and a header tuned on the dyno should give you a very strong midrange with a very broad torque curve. You will want gears, because the power below 3k will be down some, but you should have a huge, mostly flat torque curve that covers most of the powerband. And it will have enough top end that you wont find yourself running out of rpm's.
The intake porting wont need much work. The 6 port housings have a lot of port area/timing. The center housing has a lot of potential, but not much needs to be done to the end housings.
Keeping the overlap to a minimum will make the engine have a strong midrange.
#43
u can do about 180 at the wheels if you get a good exahsut, and an aftermarket intake manifold with idividual throtltle bodies with stock ports.
i dont think that an fc can ever be a competitive auto crosser.
i dont think that an fc can ever be a competitive auto crosser.
#45
Woo Hoo! My life just got a lot easier (potentially). SCCA is talking about phasing out the weight penalties for fuel injection. Hopefully they won't change the min. weight very much, if at all.
Aux. BP with custom manifold here I come!
Aux. BP with custom manifold here I come!
#48
Originally Posted by kahren' date='Feb 27 2004, 12:45 AM
where did u see a bridge with 174whp?
Originally Posted by Drago86
Ive seen NA fc's dyno at 174rwhp with bolt ons and a street port. a bridge is only worth 6 hp?? stock FC's with all the bolt ons do 160+ rwhp..
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