99+ intake on renix head 4.0

[Manche90]

I know I will have to do some modifications to the throttle cable etc. I have a 99+ intake laying around and a 96 exhaust manifold. I know I will have to grind the intake some and bend the rear tube some. Is it possible will it run right? I already have everything I need to swap it the cable tps adapter etc. I have a friend who did a ho swap to his jeep and he gave it to me. I was going to do a head swap to a ho head. Exhaust manifold is leaking now with the renix head so can I install it for now and it run right? Till I can afford a ho head I was going to use a 93 head but will it all work with the renix head for now? 
 

90 Comanche 4.0 ax 15 transmission 

[jpnjake]

 

 

[Manche90]

So the 99+ ho intake will work with no issues with the renix head? Will the the run correctly. I know the exhaust will I know it will take a little modification but will this work till I can get a ho cylinder head which idk when that might be. I appreciate the help 

[pizzaman09]

If you are asking whether it will run, certainly.  It's somewhere between 0.5 to 1 inch longer runners.  You might notice a slight difference in how the power comes on, per typical engine theory it should have more low end torque at the expense of top end.  

[DirtyComanche]

It works but it's not really an upgrade with the ports so badly mismatched.  If I was you I'd wait until you have the HO head and swap it all over at the same time.

 

Too bad the pictures in my thread are broken.  It showed how bad it is.

[cruiser54]

Too much work for next to nothing horsepower wise. 

 

You must use the gasket for the intake manifold you are using. Not for the head you're using. 

[75sv1]

I did install one on a '98 XJ. no real improvement in HP. From surfing the net, you might gain 5 HP. There are a lot of other factors. Header and exhaust, bored TB, ported head.  I have done those on a stock 4.0L. Some improvement, but not a bunch. One of our past members, Hornbrod did gain 12 hp at the rear wheel with the 2000+ intake. That was a stroker and more than likely had exhaust improvement , bored TB and upgraded injectors etc. 

          There was around 2014 on NAJXA, Jordche88 did a swap of the 2000+ intake and reported 27HP increase, DYNO ran. Some of it was that he replaced injectors. I saw his thread latter on MallKrawler. He did add an adjustable fuel pressure to the system. I think up to 55 PSI. 

          Might also look at Newcomer engines. They seem to port the HO intake for power. 

[Manche90]

Thank you all for the information I appreciate it! I need a new exhaust anyway so I might go ahead and at least do the exhaust manifold then just on the ho head when I get the money with the intake manifold. I appreciate y’all’s help and the information.