Project88XJ

Sorry if this is a repost. i did some searching on the site and couldnt find out exactly what i needed. i have a 1988 jeep cherokee 4.0 with the famous manifold leak. i would like to go to an after market header. My question is will the standard 1991 cherokee header work on my 1988????
a 4.0 is a 4.0 correct? i hear some people they will fit and others say they wont fit....HEEEELLLLP please

jakbob

i dont think an HO exhaust manifold will fit a renix head. IIRC either the intake or the exhaust was moved a little. why not just get an aftermarket for an 88?

Project88XJ

i hear that there was only one company that makes them for the 88. pacesetter? i think they were and i guess the feedback isnt all that great..

BrofessorXJ

Here ya go. Pacesetter.

http://www.quadratec.com/products/77604_701.htm

You'll want to replace your motor mounts as well. If they are bad they may have caused the cracked header.

cruiser54

Exhaust ports are exactly the same. Renix has an EGR tube to the intake. HO doesn't. Renix has O2 sensor in manifold. Ho has the O2 sensor in the downpipe. It's doable.

Project88XJ

thanks cruiser54 thats exactly what i was looking for. too see if the ports matched the same!...the rest is a breeze... thanks for the good info.

cruiser54

Intake ports are a bit different but Renix to HO swaps are done with no problem. Done 2 of them and working on my third one now.

freegdr

will the ho exhaust manifold bolt up to renix head, just have a o2 and egr bbungs welded on then new exhaust

cruiser54

Yessir!! That HO ain't magic by any means.

freegdr

ho headers are so much cheaper than the one company that makes the only one i can find for renix ya no

cruiser54

Change the headpipe to match the header and have an O2 sensor bung welded into the headpipe. The harness is plenty long enough. At the same time, you'll be eliminating that "crush" in the original headpipe. Easy.

88CherokeeKid

I have an 88 as well and it drives me crazy to see that no one makes aftermarket headers! I'm not sure it'll just bolt right in, most likely some mods will be needed. I'm pretty sure that the Renix manifold comes straight down and the high output manifold swoops towards the back.

Project88XJ

Yeah I'd much rather buy an APN header ive heard good words about them..

AVjeeper

Does this mean I can take a 92' exhaust manifold/header, add the 02 sensor and EGR fittings and use on my 89'?

freegdr

yep its in my future plans gonna get a renix manifold from u pull and take it to the muffler shop and measure and weld and do a bored throttle body at same time