Help:13B or 12A
07-08-02, 10:03 PM
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Help:13B or 12A
I'm gonna get a eng built for my 80 rx-7. What should I install? 13B or 12A? 13B 4 port or 6 port or rebuild my 12A and street port it?
Help me guys...
Help me guys...
07-08-02, 10:27 PM
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Depends how much money you wanna spend and what exactly you want from the car.
13B 4 port probably has the most power potential but you'll need to mod the engine bracket/crossmember and possibly the front cover and sump (depending on which year engine you use) to make it fit.
12A on the other hand will bolt straight back in but is more peaky in nature which is fun in it's own way.
13B 4 port probably has the most power potential but you'll need to mod the engine bracket/crossmember and possibly the front cover and sump (depending on which year engine you use) to make it fit.
12A on the other hand will bolt straight back in but is more peaky in nature which is fun in it's own way.
07-08-02, 10:31 PM
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Originally posted by 82streetracer
13b streetport 4 port.
Most power for a streetport, WAAAAAYYYY better soundl.
13b streetport 4 port.
Most power for a streetport, WAAAAAYYYY better soundl.
07-09-02, 12:05 AM
#5
yeah ... it all comes down to the money you have to spend.
streetport 13B will require a whole new intake and headers on top of the money used to build it, and like revhed said, depending on which year, you may have to get front cover and oil from an SE.
streetport 12A will require just a few adjustments to your fuel system and if you don't already have headers, then get them - but that's all you'll need on top of the cost of building the motor.
streetport 13B will require a whole new intake and headers on top of the money used to build it, and like revhed said, depending on which year, you may have to get front cover and oil from an SE.
streetport 12A will require just a few adjustments to your fuel system and if you don't already have headers, then get them - but that's all you'll need on top of the cost of building the motor.
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07-09-02, 02:09 PM
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well the headers are the same price, and the actualy engines differ in price by about $50 (we priced out 100% new parts), the only difference is that you need some sort of an intake for the 13b. the 13b will make more power (its bigger). unless you have a bunch of 12a go fast stuff the 13b is prolly a better choice
mike
mike
07-09-02, 03:16 PM
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13B no question; much more flexibility and power potential. Makes significantly more power with the same parts. Of course you'll need a new intake manifold and headers, but that's no big deal. Who cares that you can't run your stock Nikki setup - you wouldn't want to run that on a ported 12A either. A good carb and ported 13B will make power-o-plenty... I wouldn't screw around with 12A's if you have the choice.
07-10-02, 11:47 AM
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The good thing about rebuilding the 12a is you know where its been. Buying a 13b is a bit of a gamble unless you go expensive and go to a good rebuilding house.
07-10-02, 11:51 AM
#13
Originally posted by SilverRocket
Of course you'll need a new intake manifold and headers, but that's no big deal.
Of course you'll need a new intake manifold and headers, but that's no big deal.
Saving some money = good thing.
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