NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   Rotary Engine Building, Porting & Swaps (https://www.nopistons.com/rotary-engine-building-porting-swaps-55/)
-   -   Street Porting (https://www.nopistons.com/rotary-engine-building-porting-swaps-55/street-porting-63616/)

cps87rx7se 01-14-2007 09:51 AM

I am going to have my engine rebuilt this spring by Rotary Resurrection, and I was wondering from you guys what porting I should go with? He does Aux. Porting, Primary porting, All ports and removes exhaust sleeves and cleans them up. I am wondering what you guys think will give me the best power gains without sacrificing lowend. Mods that are done to the car are as follows: Cold air Intake system, port matched the manifolds, 5 & 6 Pineapple sleeve inserts, Racing Beat streetable header, Magnaflow High Flow cat, Borla cat-Back, and Mazda Racing short throw shifter. I also have a SAFC installed on the car that will be tuned after the engine is rebuilt and the break in period is achieved. I am looking for good high end power, and trying to get some low end torque out of this as well. Here is the website with hte options on it; http://www.rotaryresurrection.com/2n...ne_prices.html

Thanks for the help.



CHRIS

iceblue 01-14-2007 07:36 PM

OEM seal kit .4mm advance on P and .6 in S. 1mm exhaust close.

cps87rx7se 01-15-2007 09:32 AM

Could you explain this to me, I am not exactly sure what you mean by this. Does it mean advanced the primary port .4mm, and .6mm for the secondary port, and then open the whole exhaust up 1mm? I have never ported before and dont know exactly how it should be done, but the .4mm and .6mm seems alittle small to me? Could someone explain to me why this is?

iceblue 01-15-2007 10:53 AM

You understood exactly.



Bigger is not always bettor.

j9fd3s 01-15-2007 11:16 AM

exactly, stock intake is the limitation with the stock ports...

BDC 01-16-2007 11:07 AM


Originally Posted by iceblue' post='853308' date='Jan 15 2007, 08:53 AM

You understood exactly.



Bigger is not always bettor.



Hallelujah!



B


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