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Drag racing an S4 n/a in the 1/4 mile

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Old 12-06-08 | 02:33 PM
  #51  
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Originally Posted by Roen
I just realized something.

Superchargers like engines that have zero overlap......I don't think any current 13B has zero overlap, save the Renesis.
Yeah... unfortunately, that's not a problem I can solve; I'd consider going 4-port with n/a (slightly higher compression) rotors, but wouldn't want to mess with a Renesis.
Old 12-07-08 | 12:48 AM
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Check the Race Car section, ITS guys like to try to make above 175 whp on stock engine with tuning, intake and exhaust. S5 engine though. And you may need to rebalance the engine to spin it higher.

I'm not sure what the highest S4 NA engines put out stock, with tuning, intake and exhaust.

If you do go 4-port, try to streetport it in such a way that minimizes any additional overlap.
Old 12-07-08 | 02:52 PM
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ah... yeah. what you say about the porting makes sense.

As for 175hp on S5 engine, that doesn't do me much good; I thought you meant S4. I'd guess that means I can hit 160 or so to the wheels, though, that'd actually be good. I probably should know this, but what is "ITS"?
Old 12-07-08 | 10:51 PM
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Originally Posted by MmSadda
ah... yeah. what you say about the porting makes sense.

As for 175hp on S5 engine, that doesn't do me much good; I thought you meant S4. I'd guess that means I can hit 160 or so to the wheels, though, that'd actually be good. I probably should know this, but what is "ITS"?
SCCA Improved Touring Club Racing, Class S.

That's where FC's are classified.
Old 12-07-08 | 11:04 PM
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Originally Posted by MmSadda
Yeah... unfortunately, that's not a problem I can solve; I'd consider going 4-port with n/a (slightly higher compression) rotors, but wouldn't want to mess with a Renesis.
Check out the older 4 port 13B motors that were in the Cosmo's, RX-3's, etc. They are harder to find compared to an S4/5 motor.


It will be carb'd though.
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