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RX-7 2nd Gen Specific (1986-92) RX-7 1986-92 Discussion including performance modifications and technical support sections.

 
 
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Old 10-21-2011, 04:07 PM   #8
Libor
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Quote:
Originally Posted by Raksj04 View Post
Most people use a 4 port engine without a turbo because it was what they had to get the car driviable.
No. They use 4 port engine because its superior for power and torque production, no matter what porting is applied to irons...

Quote:
Originally Posted by Raksj04 View Post
Does a N/A benifit from a higher redline then a turbo engine?
Its quite strange question. Turbo engine is very same as NA engine, it just operates in different absolute pressures. Certainly, once you reach maximum torque you can produce in NA engine, only way to increase power is to carry this torque to higher rpms and high rpms=huge stress and wear on everything. So in case of turbo engine, its always better to turn up the boost then trying to spin it to the moon

Quote:
Originally Posted by RETed View Post
There's no need to raise the redline if the engine doesn't significantly make more power at the higher RPM's.

-Ted
+1

To the OP, if your system will be really optimized, it could go over 250 HP@crank. That being said, most streetported 13Bs are probably making around 220 HP... It depends on to much things...

Last edited by Libor; 10-21-2011 at 04:14 PM.
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