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/)
-   -   Streetporting 13b In Se (https://www.nopistons.com/rotary-engine-building-porting-swaps-55/streetporting-13b-se-26228/)

4meuwil 10-06-2003 11:24 AM

I don't want to go too crazy as I will be driving it daily......should I stick with a smaller street port or can I go for a larger street port while using stick injectors, ecu, etc...

j9fd3s 10-06-2003 11:43 AM

mine with a stock port motor, is at the limit of the fuel system, if you port it its gonna run out of fuel at like 6000rpms, so you wont be able to get into your new power band.



mike

4meuwil 10-06-2003 01:14 PM

thank you....

j9fd3s 10-06-2003 01:23 PM

add fuel first



mike

4meuwil 10-06-2003 04:27 PM

is there a way to do that without running another ecu/standalone.....like upgrading injectors/fuel pump/size of ful lines, etc.?

88IntegraLS 10-06-2003 07:21 PM

Hmmmm. Very interesting. Unless you guys mean turbo rotaries, I thought the consensus was the stock 460's were fine on na engines. Usually we S4 guys have to lean out the upper fuel curve?

rx7_re 10-07-2003 10:57 PM

YEa, I agree with 88. From what I hear, even with a large streetport, the stock 460's will be fine. I have heard of some upgrading the secondaries but for what point? You shouldn't ned that much fuel for an NA streetport. Maybe if its a bridge or something.

j9fd3s 10-08-2003 10:39 AM


Originally Posted by 88IntegraLS' date='Oct 6 2003, 04:21 PM
Hmmmm. Very interesting. Unless you guys mean turbo rotaries, I thought the consensus was the stock 460's were fine on na engines. Usually we S4 guys have to lean out the upper fuel curve?

hmm you have a point, i was thinking 84-85 gsl-se witch is 2x 680cc injectors, it runs out of fuel with an exhaust.



if its an 88 se, port away you have enough fuel to make almost 200hp....



mike


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