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Old 01-23-2010, 03:03 PM   #1
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Default AC Safe Ramhorn?

I am in the planning stages of a manifold build. My car is a 91 w/ AC no PS.

Is there anyone running a ramhorn style manifold, with A/C. I have search for a few days at this point, but I can't seem to find a definitive answer.

If I had access to my car, I would simply measure it and go from there.

Thanks
-Rouphis
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Old 01-23-2010, 03:22 PM   #2
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BEGI S4 Exhaust Manifold 1989-1993 BEGi

I'd try to copy this as much as possible if you are dead set on keeping your a/c.
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Old 01-23-2010, 03:41 PM   #3
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It would be very possible if you're collector was dead nuts center in relation to the head flange and as high as possible.
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Old 01-23-2010, 06:21 PM   #4
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Curious why you want the ramhorn. Do you have reasons to believe it's a better performer than a shorty?
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Old 01-23-2010, 07:33 PM   #5
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^^ Everyone knows this
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Old 01-23-2010, 11:46 PM   #6
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You'll need to reroute the lower coolant hose to make room for the compressor. Not a big deal.
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Old 01-24-2010, 02:00 AM   #7
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Quote:
Originally Posted by jtothawhat View Post
^^ Everyone knows this
not so fast there, to-the-what. sometimes it is good to question the conventional wisdom. especially when people here have had amazing results with non-ramhorn designs.
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Old 01-24-2010, 02:40 AM   #8
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Y8s speaks the truth. You don't need a equal length tubular manifold to make power. Un-Equal length shorty manifolds make dank ******* torque. Perfect for street driving and around town use. If you want a highway monster puller, then go with a ramhorn.

I thought about going to the S4 manifold from Begi but, i'm just gonna have my FM3 ported and cleaned up. Should be perfect for 300whp.
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Old 01-24-2010, 10:50 AM   #9
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But I have a power goal of 200rwhp and wont be changing out the stock rear, so i need a Ramhorn.
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Old 01-24-2010, 01:03 PM   #10
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Quote:
Originally Posted by Braineack View Post
But I have a power goal of 200rwhp and wont be changing out the stock rear, so i need a Ramhorn.
WTF? I haven't changed my stock rear yet because I'm not boosted. I have every intention of installing a 1.8 rear with an rx7 clutch type lsd.

-Rouphis
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Old 01-24-2010, 03:09 PM   #11
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Yes, he doesn't NEED a ramhorn; but I would rather cough up a little more cash how for more head room later. Yes you CAN make 380+ whp on a shorty like I did, but you will be running more boost etc. and it's kind of un-needed. So with that being said, if I had to do it all over again I would have never bought an ETD manifold saved 500 dollars and just went straight to the ramhorn.
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