6 port 12A
the motors are low on power, extremly small ports, but there is 6 of them, they do have good low end, but the top end is non-existant.. 9.4-1 compression, good gas mileage when your crusing around, thats about it.. what else did you want to know?
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Can I see some intake and exhaust shots? Or a shot of the intake and exhaust ports at the same time.
I want to see just how much difference there is between a 4 port 12A and 6 port.
I have never seen a 6 port 12A before. Were these the turbo fuel injected models, carbed or both?
I want to see just how much difference there is between a 4 port 12A and 6 port.
I have never seen a 6 port 12A before. Were these the turbo fuel injected models, carbed or both?
that seems kinda lame that they wouldnt be bigger performers on the top ...
i have seen pictures of carburated ones as well as turbo i belive they had a efi systm ... the breather cover (i have one) is the same as the standard blue one that comes on all the 12a carb models . pretty much the dead givaway is the orange , i wish i had more pictures !!! but it took forever to find those .

ok ... digging around and i found that the 82 turbo version of the 12a made around 160 bhp @6000 rpm and 165 lb-ft of torque @ 4000 rpm .
>.< keep in mind that is not "poven" so dont quote me yet lol ,. 
oh and they were NOT inercooled .
i have seen pictures of carburated ones as well as turbo i belive they had a efi systm ... the breather cover (i have one) is the same as the standard blue one that comes on all the 12a carb models . pretty much the dead givaway is the orange , i wish i had more pictures !!! but it took forever to find those .

ok ... digging around and i found that the 82 turbo version of the 12a made around 160 bhp @6000 rpm and 165 lb-ft of torque @ 4000 rpm .
>.< keep in mind that is not "poven" so dont quote me yet lol ,. 
oh and they were NOT inercooled .
Last edited by vipergts_3; May 14, 2006 at 04:05 PM.
Ok so I took my 12A out of my '79 today to replace it with an '83 12A engine.
The intake ports looks like 2 on the outside housings, 2 in the center housing then the 2 exhaust ports.
Does this mean 6 port or what am I missing here?
The intake ports looks like 2 on the outside housings, 2 in the center housing then the 2 exhaust ports.
Does this mean 6 port or what am I missing here?
Originally Posted by '85GSL-SE
Ok so I took my 12A out of my '79 today to replace it with an '83 12A engine.
The intake ports looks like 2 on the outside housings, 2 in the center housing then the 2 exhaust ports.
Does this mean 6 port or what am I missing here?
The intake ports looks like 2 on the outside housings, 2 in the center housing then the 2 exhaust ports.
Does this mean 6 port or what am I missing here?
Originally Posted by 680RWHP12A
thats a 4 port motor, you dont count the exhaust ports as intake ports, thats cheating..

Ok I get it now I hope...

So thats what the extra 2 ports on the side housings are for? 4 ports on the side housings and 2 ports in the intermediate housing = 6 port
If you add the cheat ports that makes it an 8 port!
I have a 6 port 12a that I'm rebuilding. I'll have pictures on here soon so you can check them out. I have some pics of the intake manifold already but its covered in crud. Anyway I'll keep posting progress.
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heywier427
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Sep 11, 2015 04:49 PM



What are the specs on this motor ? i know it was avalible in the rx7 for a time but it was never avalible in america .
