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Unread 06-29-2003, 08:28 PM   #1
motoxxxguy
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1995 XJ Cherokee 
 
Join Date: Jun 2003
Location: Chattanooga, TN
Posts: 124
V8 headers for CJ

I'm beginning to research my options for a new set of headers and exhaust for my '79 CJ-7 304ci. I'm interested most in a fenderwell exit with the exhaust pipes exiting in front of the rear wheels. My question is does anyone have any experience with fenderwell exit headers and are there any additional problems associated with this style. If it is too much of a problem, I'll just go with the chassis exit headers and a full dual exhaust. Let me know what you think.

-moto

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Unread 06-30-2003, 10:09 AM   #2
fuzz401
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1978 CJ7 
 
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i would use nothing but wheel well headers never have to work around the pipes when under the jeep gets the heat away from the starter to just make shore you bolt the muffler up or the flange on the collector will break off in time all you do is cut a flat spot off bott of the fender and unbolr the braces to get the in
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1978 cj-7 had since 1979
401 .030 over- full floating flat top pistons
crower solid cam 292 dur .500/.510 lift
turbo 400 tranny 2500 stall
model 20 transfer case
aj delux glass body
4" lift
dana 30 frount
dana 44 rear
4.56 gears
http://img2.photobucket.com/albums/v...slideshow=true
http://photobucket.com/albums/v31/fu...slideshow=true
13.461 @ 92.45 mph on 37" super swampers on 1/4 mile
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Unread 06-30-2003, 10:34 AM   #3
LS1CJ5
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1979 CJ5 
 
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Go with the Headmans cause both side pipes are parallel with the body. On Cyclone's the drivers side kicks down at a 5 to 10% angle. As for mufflers I've always used Hooker 21038HKR or 37's. http://www.holley.com/HiOctn/ProdLin...A/Turnout.html

Soak the gasket in water while you take the old stuff off and leak free. I also hang the back of the side pipe on a spring so it can move with the motor. That helps the whole system move together instead of one being rigidly mounted.

Larry
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Unread 06-30-2003, 02:38 PM   #4
motoxxxguy
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Thanks for the info, guys. Larry, those Hooker turn outs were exactly what I had in mind, just hadn't found them yet. Do they bolt right to the headers? Thanks again.

-moto
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Unread 06-30-2003, 04:41 PM   #5
fuzz401
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1978 CJ7 
 
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make shur you try them on first the headmans my last set I had to send back to headman becaus the driver side hit the body mount they sent me another pair that were right then
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1978 cj-7 had since 1979
401 .030 over- full floating flat top pistons
crower solid cam 292 dur .500/.510 lift
turbo 400 tranny 2500 stall
model 20 transfer case
aj delux glass body
4" lift
dana 30 frount
dana 44 rear
4.56 gears
http://img2.photobucket.com/albums/v...slideshow=true
http://photobucket.com/albums/v31/fu...slideshow=true
13.461 @ 92.45 mph on 37" super swampers on 1/4 mile
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Unread 06-30-2003, 06:58 PM   #6
rock-rod
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Just be warned, fenderwells can be a little loud! They are awesome for performance though! I ran them for awhile, but wimped out after a year and went back to stock extrude honed manifolds. I noticed a slight drop in rev-ability, but low end torque is still the same. I'm just getting old and don't care for the noise anymore. Also, if you rock crawl, then be prepared to inflict some damage to them if you get against a rock.
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'85 CJ-7, fuelie '73 401, NV 4500, Atlas III 4.3, 14 bolt FF rear, Dana 60 front, full width axles, Detroits F&R, 4 wheel discs, spring over front, coils and reverse 4link rear, 100 in wheelbase, 42 inch Swampers on hummer beadlocks.
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Unread 06-30-2003, 08:52 PM   #7
motoxxxguy
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Thanks again guys. I just ordered a pair of Dynomax fenderwell exit headers and the chrome Hooker turnouts. I don't mind the noise as long as it has a nice sound to it! I'll keep you posted on how it works out.

-moto
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Unread 07-01-2003, 09:27 AM   #8
LS1CJ5
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You'll love the sound, They are a baffle type muffler. If you ever heard any mid 60's Fords or Chevy's with Hooker side pipes, these have a similar sound. A nice deep tone at idle, you can talk over them. Floor it, and you'll hear them. Also down shifting sounds great. Before I cranked mine up I thought they would be way too loud and so did my neighbor. I cranked it up had it idling and called him over. He said hell that's fine.

And they do bolt to the header collector.
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Unread 07-01-2003, 06:19 PM   #9
rock-rod
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Oh yea! it will sound really good! Just bring some ear plugs on those long highway jaunts to the trail head!
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'85 CJ-7, fuelie '73 401, NV 4500, Atlas III 4.3, 14 bolt FF rear, Dana 60 front, full width axles, Detroits F&R, 4 wheel discs, spring over front, coils and reverse 4link rear, 100 in wheelbase, 42 inch Swampers on hummer beadlocks.
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