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Unread 12-25-2010, 10:06 PM   #1
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1974 J-Series Truck 
Join Date: Oct 2008
Location: Wheatland, Commiefornia
Posts: 311
dumbest exhaust question yet for 4.0 swap..

So im a confused newb and i wanna spend my money right first time..i got a new 4.0 header..and its on ready to go..got a nice new downpipe with perfect bend to clear my slave cylinder and belllhousing..simply gotta cut it at the straight point and match to whichever cat and muffler i pick out..so here goes..am i looking for an exhaust kit for the Wranglers?! Im assuming the 4.0 wrangler from 91-95? I get confused looks (as usual) at napa..and will be calling 4wd.com in morning..but a few beers in tonite and REALLY wanna find which brand i want to buy asap..seen a bunch of cj's with really nice systems and i want that rear exit one piece pipe..just confused as to easiest/best way to route her thanks all for bein patient! Im almost there

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Unread 12-26-2010, 07:42 AM   #2
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1983 CJ7 
Join Date: Feb 2006
Location: Riverview, Florida
Posts: 3,441
I haven't looked at the YJ exhaust for a while but I know the TJ exhaust crosses over to the passenger side and exits behind the passenger rear tire.

I don't know about yours, but that won't work for my '83 CJ. The CJ exhaust goes straight back... why not build your own or have one custom built.
Vibration? Bump steer? Wandering? Read: Steering, suspension, and driveline basics. An article on how it works and where to look for problems.

83 CJ7, 4.1L 6cyl (4.0L bored .030" over), 35" tires, T-5 transmission, Dana 300 TC, Trussed AMC 20.
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Unread 12-26-2010, 09:09 AM   #3
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Join Date: Apr 2001
Location: Concord, North Carolina
Posts: 62
The driveshaft being on the passenger side kind of forces you to run it straight back down the driver side. I think you would have a hard time snaking it over to the passenger side. I agree with gojeepin, have one custom built.

I bought the piece of pipe that comes off the header of a stock 4.0 at a junk yard and cut and welded it to match what I had. Not the best, but it works for now.
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