12a or 13b

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Nov 16, 2004 | 02:46 AM

TigrClaw2000

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The Right One

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From: So.Cal

12a or 13b

is the 12a a good engine 2 go wit or the 13b people say stay wit the 12a and turbo charge it is that true

Nov 16, 2004 | 08:44 AM

Matt22

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it all depends what its going in? What will it be going in, and how much power do you want out of it?

Nov 16, 2004 | 10:47 AM

neptuneRX

Mazda4Life

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From: Rockville, MD

I concur

Nov 16, 2004 | 11:04 AM

Crit

No distributor? No thanks

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From: Outskirts of Road Atlanta

12A parts are WAY cheaper, by the way. A gasket kit will run 1/3 the cost of a NA 13B, just because owners of newer cars will pay more money. Besides, you can find used 12A parts everywhere.

Nov 16, 2004 | 11:07 AM

rxtasy3

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with both running the same port configuration, they each make pretty much the same amount of hp but u'll get more torque with the 13b.

Nov 16, 2004 | 08:28 PM

TigrClaw2000

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The Right One

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From: So.Cal

in a 85 rx7 5spd i need more speed bad everybody stepin 2 me 2 race and my motor can take it

Nov 16, 2004 | 08:35 PM

Crit

No distributor? No thanks

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From: Outskirts of Road Atlanta

Port it. If unhappy, port it more. If you get into the water jacket, just rinse and repeat.

12a or 13b

12a or 13b

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