Clifford header ?

[1990 Pioneer 4x4]

Has anyone used this Clifford header on their Renix?

 

http://www.cliffordperformance.net/Merc ... _Code=J258

 

[Jeepman]

I have not used it Yet but it will be the header For my Stroker Engine when I am done building it..

[1990 Pioneer 4x4]

is there any reason you're choosing it over the Dynomax Blackjack header? :???:

 

doesn't seem to be many options...

 

http://motionoffroad.com/catalog/index. ... ts_id=1948

[Jeepman]

The Dynomax Header is Much like the pacestter Header and I have seen a few of those Rot out and crack +

I like the double flange on the clifford, easy removal and gives me a cleaner install...

[Eagle]

Interesting. The Blackjack says the primary pipes are 1-1/2" (no problem there) and the collector is 2". But the down pipe for a standard 4.0L is a 2-1/2", and the catalytic converter is a 2-1/2" inlet and tube, that necks down to 2-1/4" between the cat and the muffler.

 

So how does the Blackjack mate up with the cat? Or do you have to use a completely custom exhaust system?

[Jeepman]

The Older XJ's Have a smaller Tubing so I think it will be fine but For the later models I see what your saying...

 

The Pipe Might Increase as it gets to the cat as The picture of the header shows that the Tube just bolts on like a stock system...

[Eagle]

The Older XJ's Have a smaller Tubing so I think it will be fine but For the later models I see what your saying...

 

The Pipe Might Increase as it gets to the cat as The picture of the header shows that the Tube just bolts on like a stock system...

No, the older XJs do not have smaller tubing. I have an '87 MJ and an '88 XJ, both 4.0L. The down pipe is 2-1/2", the catalytic converter is 2-1/2", and the outlet of the cat necks down to 2-1/4" where it enters the muffler.

 

It was the early 4-cylinder models that had some funky pipe size variations.

[Motion Offroad]

So how does the Blackjack mate up with the cat? Or do you have to use a completely custom exhaust system?

It bolts right on. It has the pipe with the flange on it with the 4 bolts that connect to the factory system. In the photo below it's the shortest piece that is furthest back in the system.