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Rotary Tech - General Rotary Engine related tech section.. Tech section for general Rotary Engine... This includes, building 12As, 13Bs, 20Bs, Renesis, etc... |
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10-02-2009, 02:41 PM | #1 |
RCC Contributor
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what motor should i build
Ok right now i have a 6 port in my fb with the racing beat carb set up, gutted cat stock exhaust, emissions removed, and 5th and 6th port sleeves removed.My motors completely stock still got the exhaust baffles in it and no port work.
Now onto the fun part im wanting to build a new more powerful motor for it. Requirements: I want it to idle, be semi streetable, good throttle response, mid to high rpm range, basiclly a good motor for auto-x, drag racing, or spirited driving. I can get my hands on pretty much any engine combination just need a idea of what motor i need to build to take advantage of this carb and my heavy foot.
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85 rx7 gsl-se - AA tags/ never ending project will never run |
10-02-2009, 09:50 PM | #3 |
RCC Contributor
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charles is talking about a 4pt turbo motor with high compression rotors, and a street port gonna check on that some, also gonna look through the templates he has and see what i can find
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85 rx7 gsl-se - AA tags/ never ending project will never run |
10-03-2009, 12:59 AM | #4 |
Respecognize!
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build yourself a good streetport on a 13b FOUR port engine. (as mentioned above)
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10-03-2009, 02:59 PM | #5 |
The Newbie
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13b 4 port
i have 13b housings from gsl-se, and 12a irons with holley four barrel and i love it, that motor has so much power for not being ported, i have the parts to build another one, and i think i want to put a mild port on it i have just never ported one before, but yes if i were you 4 ports on a 13b is great
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10-06-2009, 07:03 PM | #6 | |
The quest for more torque
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4-port FTW! 6-ports have far too late of intake port closing when the 6-PI is active.
Quote:
You can extend the port upward, but make sure that the port still closes when the stock port does (don't change the port timing). Actually I am intending to do another build using Renesis rotors and a lot of devcon, to see if I can get an earlier Intake port opening and an earlier intake port closing (which should give 10% more torque that I am making).
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1986 GXL ('87 4-port NA - Haltech E8, LS2 Coils. Defined Autoworks Headers, Dual 2.5" Exhaust (Dual Superflow, dBX mufflers) 1991 Coupe (KYB AGX Shocks, Eibach lowering springs, RB exhaust, Stock and Automatic) Last edited by NoDOHC; 10-06-2009 at 07:06 PM.. |
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