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RX-7 1st Gen Specific (1979-85) RX-7 1979-85 Discussion including performance modifications and technical support sections

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Old 05-14-2012, 07:26 PM   #1
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Default 12a question

my sons se had a carbed 12a in it.I'm planning on using my se housings and rotors when i build his engine. i've looked at the 12a's oil cooler and was wandering, do I need to use the beehive or can I use an s4 cooler instead?






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Old 05-14-2012, 08:08 PM   #2
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Quote:
Originally Posted by fc nut View Post
my sons se had a carbed 12a in it.I'm planning on using my se housings and rotors when i build his engine. i've looked at the 12a's oil cooler and was wandering, do I need to use the beehive or can I use an s4 cooler instead?
Swap it.
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Old 05-14-2012, 08:13 PM   #3
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The 12A in my 79 used an oil cooler almost identical to the one in an FC. I don't know about internals or the fittings, but I don't see why not. I still have the oil cooler and front cover from the 12A, if the FC one won't work. Anyone else?
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Old 05-15-2012, 07:03 AM   #4
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Don't use the beehive for a 13B build. You want a front mount of some kind.
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Old 05-16-2012, 06:57 AM   #5
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The 2nd gen oil cooler works the hard line for the back iron has to be straightened a little to fit then you will have to figure out a way to mount it
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Old 05-18-2012, 08:03 PM   #6
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as long as you can figure a way to mount it, use the S4 cooler.
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Old 05-18-2012, 10:57 PM   #7
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Mazda did so well at most parts ... but that beehive is such a joke

swap it.
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Old 05-26-2012, 09:27 PM   #8
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recently my se's oil cooler was cracked and i was gonna use an s4. i ended up getting it welded,so i was gonna use it in my sons car. his engine is gonna have se housings and 12a irons,that's why i was gonna see if it would work.
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Old 08-13-2012, 03:56 PM   #9
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I think my question is related:

I just recently replaced my sp 12A (lost compression) with a stock 12A. It was running the "bee hive" cooler so I pulled it already and am running a front mount. Can the hard coolant line that's still back there be unscrewed and that port plugged or ...? I didn't want to attempt to remove it yet and potentially shoot myself in the foot and introduce a new problem that didn't exist. Right now I've capped both openings but they're still leaking a bit.

Here's a picture of what I'm talking about with the orange arrow pointing out the hardline I'm referring to. (it's not my engine by the way):
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Old 09-15-2012, 09:55 PM   #10
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use an original SE cooler if u can get one, otherwise as mentioned, u can fab a mount for the s4 cooler.
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Old 09-16-2012, 09:40 PM   #11
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Just cap one of the ports with a cap they sell some in the help section of auto zone that are just for blocking coolant. You could always bend it and weld it shut.
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Old 09-17-2012, 03:28 PM   #12
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i ditched that idea. i'm gonna use my se engine in my son's car,with a sidedraft setup. i'm gonna use the s4 cooler on his car.
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Old 09-18-2012, 11:51 AM   #13
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Quote:
Originally Posted by dr.occa View Post
I think my question is related:

I just recently replaced my sp 12A (lost compression) with a stock 12A. It was running the "bee hive" cooler so I pulled it already and am running a front mount. Can the hard coolant line that's still back there be unscrewed and that port plugged or ...? I didn't want to attempt to remove it yet and potentially shoot myself in the foot and introduce a new problem that didn't exist. Right now I've capped both openings but they're still leaking a bit.
i think those r just pressed into the housing. last one i did i just cut it off just behind where it T's off towards the firewall so there's just the single piece sticking out.
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Old 10-31-2012, 06:41 PM   #14
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thanks for the input,however i've decided to use my se engine in my son's car.
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