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Unread 07-14-2007, 07:11 PM   #1
lost honda pro
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Installed a '01 intake manifold on my '97 *with pics*

so, for those of you who are curious, or who havent seen the raw data, here is a pic. the top is your run-of-the-mill 4.0 log-style manifold, and the bottom is the '99-'01 manifold.

its really easy to tell how the small, thin plenum and unequal length runners (really short in the middle, REALLY long on the outside) are not as smooth or efficient of a system as the large plenum and nearly equal length runners of the newer model.

mine was $100 at the local junkyard (they sell em on ebay for $125) and $11 for the gasket.

bottom pic shows how unimaginably long our engine blocks really are (they're ridiculous!) gasket is 27" back to front... thats just crazy...





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Unread 07-14-2007, 07:59 PM   #2
SLO.XJ
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Have you finished? What were the results?
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Unread 07-14-2007, 09:46 PM   #3
lost honda pro
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yea, took like two hours... easy swap.

i did this along with a 2.25" intake pipe and a cone filter, and aside from the very slighty whistle (old filter), the results are good. the biggest improvement was throttle response, which is now very quick. engine smoothness also seems better, and the main point, fuel economy, seems better too (got like three days left on the tank, then ill let u know)

overall, easy, relatively cheap, and good gains. i recommend it.
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Unread 07-14-2007, 09:50 PM   #4
GOKUSXJ
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Hmmm interesting, good job.
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Unread 08-09-2007, 06:39 PM   #5
skyjacked94xj
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Fuel mileage??? whats the update...
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Unread 08-09-2007, 06:45 PM   #6
nascarnation
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Thanks for the info.
I'm going to do the same update on my 97,
Does anybody have suggestions for the exhaust - I'm looking for torque and mileage not hp & revs.
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Unread 08-09-2007, 07:36 PM   #7
XJ_Glen
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that is a very interesting swap. i can only imagine...
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Unread 08-09-2007, 07:39 PM   #8
HiMiles91XJ
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More changes are required on an older XJ, like a '91, right?
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Unread 08-09-2007, 08:00 PM   #9
skyjacked94xj
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Quote:
Originally Posted by HiMiles91XJ
More changes are required on an older XJ, like a '91, right?

I am pretty sure on pre-96, you need a new power steering pump bracket
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Chevy 350 crate motor | 4-speed | fully restored | Lowered | 20" Centerline Daggers.. wayyy too much to list


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350 TPI | WS6 | 48k original miles | Flame Red Metallic


SOLD: 94 cherokee | Lifted | Locked
SOLD: 97 TJ | 33's | 4.56's | :(

Searching for an Ls-1 Rx-7 project....
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Unread 08-09-2007, 10:18 PM   #10
alexrule123
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I did this swap on a 96 and it was easy, on a pre 96 you will need a 96+ power steering pump bracket
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Unread 08-09-2007, 10:26 PM   #11
je3per-xj
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I got one on ebay to put on my stroker for about 60 bucks. havent finished the build yet but when I do there will be pics and data. but Ive been told that putting that style maniflod on the older jeeps will give you about a 12 - 15 hp gain. the reason that they made those manifolds is cause when jeep stoped making the H.O. head (for emissions reasons I think) they lost hp and had to find a way to get it back and thats what they came up with
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Unread 08-10-2007, 12:40 AM   #12
Jmila1901
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You serious?!?! only two hours!!
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Unread 08-10-2007, 10:27 AM   #13
lost honda pro
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Quote:
Originally Posted by Jmila1901
You serious?!?! only two hours!!
yea, you just pull the airbox, intake, TB, vac connections, and undo the 12 or 14 bolts.... the PS pump is a pain, but get a buddy with little fingers and it will go much faster

some of the vac lines will need to be rerouted, so have some spare hose and some smaller hose clamps on hands, but yea, easy swap.
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Unread 08-10-2007, 02:47 PM   #14
skyjacked94xj
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Quote:
Originally Posted by lost honda pro
yea, you just pull the airbox, intake, TB, vac connections, and undo the 12 or 14 bolts.... the PS pump is a pain, but get a buddy with little fingers and it will go much faster

some of the vac lines will need to be rerouted, so have some spare hose and some smaller hose clamps on hands, but yea, easy swap.

SO did the fuel mileage ever go up?
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DAILY DRIVER
1996 Cherokee Classic
4.0HO 5-SPEED! | 16x8 Rucicon Moabs | lowered 1" | clear corners | silverstars | custom waggy taillights | custom intake | Aem TB spacer | Dynomax cat-back | Bored TB | FirePower Ignition Kit


CLASSIC TOY
1968 Chevy C-10 short bed
Chevy 350 crate motor | 4-speed | fully restored | Lowered | 20" Centerline Daggers.. wayyy too much to list


Project
1988 Pontiac Trans Am GTA
350 TPI | WS6 | 48k original miles | Flame Red Metallic


SOLD: 94 cherokee | Lifted | Locked
SOLD: 97 TJ | 33's | 4.56's | :(

Searching for an Ls-1 Rx-7 project....
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Unread 08-13-2007, 01:59 PM   #15
lost honda pro
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maybe a little, 3 MPG gains, but what do you expect?

it runs smoother and throttle response is better. couple this with an intake, bored TB, maybe a TB spacer, and u got a solid induction systen.
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