Header question

I have a ’90 4.0 MJ and can’t find a header to fit… What is everyone using? :???:

I'm using the stock exhaust manifold.

Why do you want a header? On a Renix 4.0 it won't really have much of an effect other than increasing the engine bay temperature.

I'm using the stock exhaust manifold.

 

Why do you want a header? On a Renix 4.0 it won't really have much of an effect other than increasing the engine bay temperature.

The stock Renix exhaust manifold loves to crack near the back where the final tube meets.

I'm using the stock exhaust manifold.

 

Why do you want a header? On a Renix 4.0 it won't really have much of an effect other than increasing the engine bay temperature.

 

The stock Renix exhaust manifold loves to crack near the back where the final tube meets.

x2 on that, or they like to crack in 4 other places as i recently found out.

i just bought a replacement manifold off ebay for a fairly good deal. all stainless steel too

I'm using the stock exhaust manifold.

 

Why do you want a header? On a Renix 4.0 it won't really have much of an effect other than increasing the engine bay temperature.

I don’t see how the remix motor couldn’t benefit from breathing better like any other motor. Certainly would be a HP gain not to mention louder.

Stock exhaust manifolds are known for failure in these engines. Never heard about one increasing engine bay temps, where did ya get that info?

I'm using the stock exhaust manifold.

 

Why do you want a header? On a Renix 4.0 it won't really have much of an effect other than increasing the engine bay temperature.

 

I don’t see how the remix motor couldn’t benefit from breathing better like any other motor. Certainly would be a HP gain not to mention louder.

 

Stock exhaust manifolds are known for failure in these engines. Never heard about one increasing engine bay temps, where did ya get that info?

I agree, any engine can benefit from better breathing. I'm running a Borla s/s header.

 

I'm running a Borla s/s header.

On an 88 Renix? Part # please.

This might help. If I had the cash to play with right now, I'd probably own this.

http://norfolk.craigslist.org/pts/1065518449.html

EDIT: Never mind on this. It's for a wrangler with the 4.2. :doh:

I should go to bed. :oops:

:cheers:

OK, I'll try again.

http://www.autocarparts.com/part/1206/49/

I'm sure there are others that sell them.

:cheers:

Nice , I like the one million mile warranty, and the pic of the V-6 header:) .

pacesetter makes one for about 175 i think. i bought one but never ran the motor i have it on