88 renix headers

TRCM · Sep 9, 2009

Where can I find some decent headers for my 88 4/0 ?

I see many posts about APN, but cant seem to find one that will fit my engine.

I need something, my exhaust manifold is toast (surprised it still passes inspection)!

5-90 · Sep 9, 2009

The problem you run into is that the RENIX engine (1987-1990) still has an EGR valve - while my opinion on the thing is well-known, it's not shared by the Powers that Be.

The EGR was deleted in 1991, which is why you can find 1991-1999 XJ 4.0L headers, but not 1987-1990 (they don't have the second bung for the EGR tube.)

I know there used to be some headers out there for RENIX, but I can't recall who made them offhand. Good luck - and if you find one, would you please let me know? That will allow me to put it in my notebook this time.

magimerlin · Sep 9, 2009

I think it was/is "Borla" that made one of them

joe_peters · Sep 9, 2009

And Pacesetter.

You could have a muffler shop probably add a bung for the EGR, and you would probably need a different downpipe as I think (against much good advice) that the later headers terminate at a slightly different angle.

AlabamaDan · Nov 24, 2009

I found this one. What did you ever do?

http://www.1aauto.com/1A/ExhaustManifolds/Jeep/Cherokee/1AEEM00024/333781/1988

Slip Kid · Nov 24, 2009

AlabamaDan said:
I found this one. What did you ever do?

http://www.1aauto.com/1A/ExhaustManifolds/Jeep/Cherokee/1AEEM00024/333781/1988

That looks surprisingly like the stock manifold.

I got a Pacesetter header for 87-90. It was cheap, and it had an EGR bung. Get the ceramic coated one if you don't want to smell burning paint for a few minutes when you first start it.

sjx40250 · Nov 24, 2009

Borla is a decent header. I have had one for 15 years and it is one of the better investments.

old_man · Nov 25, 2009

Clifford made my single output headers but the last time I checked, they only offered the dual output headers now.

js_customs · Nov 25, 2009

I run the clifford dual outlet header with the y-pipe..I like it, although it wasnt a huge power increase...not that I expected one.

old_man · Nov 25, 2009

Tie the headers with a bigger cam and you will see much more of an increase. If I was going to have to pick one or the other, I would go with the cam first.

joe_peters · Nov 25, 2009

old_man said:
Tie the headers with a bigger cam and you will see much more of an increase. If I was going to have to pick one or the other, I would go with the cam first.

I agree. IMHO you could go with an OEM or APN header, then get a free-flow cat and cat-back exhaust and gain more than an actual "performance" header if you haven't changed the cam.

88 renix headers

TRCM

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5-90

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magimerlin

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joe_peters

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AlabamaDan

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Slip Kid

That'll buff right out

sjx40250

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old_man

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js_customs

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old_man

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joe_peters

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