: For the 4.0 fans: Sidedraft 4.0!


gavan
07-09-2008, 10:11 AM
It lives!

From my build : http://www.pirate4x4.com/forum/showthread.php?t=563614

The hood would not close on a standard 4.0 manifold and leave room for an intake elbow (raised motor, dropped and sectioned body) so I took a newer style intake and a hole saw and went to town.

Lots of little problems, like having to rewire the TPS and the IAC, re do the throttle attachment points on the throttle and the manifold, figure out a air cleaner, make a block off plate for the old throttle opening, etc. but I think it turned out very good.

So, if you have clearance problems, go to town on it! Preliminary testing shows it running strong, and it doesnt even have the annoying 4.0 whistle that some motors get with open element filters.

http://i97.photobucket.com/albums/l235/gyoung13/DSC02566.jpg

http://i97.photobucket.com/albums/l235/gyoung13/DSC02567.jpg

http://i97.photobucket.com/albums/l235/gyoung13/DSC02568.jpg

YJ_and_Corey
07-09-2008, 10:51 AM
Looks good.

The fuel pressure gauge however looks like an underhood fire just waiting to start. Is it rated for 35+ pounds continuous? Do you trust it?

gavan
07-09-2008, 11:05 AM
It is rated at 100PSI continuous, 350PSI burst, and is threaded into a AN-AN adapter with a drilled 1/8th NPT.

I got the idea from Dusty Boogers's Jeepspeed

http://www.pirate4x4.com/forum/showpost.php?p=7402421&postcount=230

I dont see a reason for it not to work? but I do carry a fire extinguisher!

DutchVDub
10-07-2011, 05:36 PM
I like your sidedraft setup, its pretty cool. Now you just need to do a custom manifold and use 6 individual TB's for some real awesomness.

gavan
10-07-2011, 05:47 PM
Holy blast from the past!

6 TBs would be pretty cool, but I have a hard enough time tuning one. I guess it will have to stay:flipoff2:

I have several hundred road miles:shaking: but a bunch of trail rides on this, including a week in Moab and some high (er) speed stuff, and the side draft has been the least of my worries. The filter is a little exposed, but I have no inner fender wells, so it is what it is. I had to clean the filter half way through my week in Moab, but that is a pretty minor thing to worry about.

The hood closes, everyone takes a second glance when they see it, and I have not been able to notice any performance detriments. Win, Win, Win.:flipoff2:

gtxracer
10-07-2011, 09:12 PM
Did you see a performance gain from this? I was thinking of doing the same thing since I want to raise up my 4.0 a little bit and I don't like the air filter on the passenger's side.

gavan
10-07-2011, 09:29 PM
Hard to say. The 4.0 had 10,000 miles on it when I pulled it out of a wrecked Cherokee, and it always ran well. I never ran it with the unmodified newer style manifold , and the Jeep lost about 500 pounds and gained a chunkier transmission while I was working on everything else, so I really have nothing to compare it to.

It feels like a good running 4.0, feels at least as strong as my old stock 94 Cherokee (even with 35s), and runs circles around a friends 2002 TJ 4.0.

Kbcjeep
10-08-2011, 10:07 PM
Thats pretty damn neat. Gotta love 4.0's cant kill them.

miguelitojeep
10-09-2011, 10:16 AM
Thats pretty damn neat. Gotta love 4.0's cant kill them.

sure you can...

gavan
10-09-2011, 12:13 PM
You can kill anything if you try hard enough. We spit out 2/3s of the cam out of one in competition years ago, and still finished the day on 4 cyls.

They are cheap, reasonably powerful, especially in low RPMS, and plentiful. Parts are everywhere and cheap to get.

Its no LSx, but I will keep it for now. More than enough power for a light rig with good gearing, as long as you are not racing it _toooo_ hard...:flipoff2:

Kbcjeep
10-09-2011, 04:04 PM
Ok, ok fair enough. gavan I agree completely , I have had extremely good luck with them, in moab 2 years ago i drove my juggy 5 miles with no water temp gauge pegged, after a back flip pushed the fan trough the rad. put a new radiator in and it still goes. they will fail at some point but I feel the 4.0 is pretty damn durable.

nice job on the sidedraft.