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Unread 04-22-2010, 06:50 PM   #16
dadstoys2
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1987 YJ Wrangler 
 
Join Date: Feb 2005
Posts: 235
I had a complete exhaust 2.5" pipes with highflow cat and flowmaster for under $275. The cat was $65 and the local shop welded it all high and tight.

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87 Wrangler Ford 302
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Unread 04-22-2010, 07:05 PM   #17
dadstoys2
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1987 YJ Wrangler 
 
Join Date: Feb 2005
Posts: 235
I had a complete exhaust 2.5" pipes with highflow cat and flowmaster for under $275. The cat was $65 and the local shop welded it all high and tight.
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87 Wrangler Ford 302
2"bodylift 5"suspension 35" bfg A/Ts
Np435 trans w/ np205
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Unread 04-22-2010, 07:36 PM   #18
NHfireYJ
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1994 YJ Wrangler 
 
Join Date: Dec 2009
Location: Seacoast NH
Posts: 2,390
Quote:
Originally Posted by ROADDOG516 View Post
I just replaced mine with a flowmaster high performance cat that was a bolt on. After removing the skid plate I supported the tranny and tc with jack stands. (note: becareful with the transmission stabilizer stud if its old it could break , mine did got another one with much needed poly bushings for $11.00 from 4wd.com) I originally thought my YJ still had the factory cat which was welded on, I grinded off this weld so that I didnt have to cut the pipe (i didnt want to shorten my pipe), after cleaning up the pipe I bolted on my new cat and clamped everything down dam tight. The only pain was that the "direct fit" cat had a slightly larger diameter outlet than my muffler would recieve so I used a muffler pipe expander and opened it up. Buttuned it all back together and couldnt be happier with results. Just by replacing my cat I got back my 5th gear and have great fuel economy even with my 4banger and 33's. As I said I thought I had the factory cat but when I brought it to the scarp yard the guy showed me that this thing was a aftermarket which explains why it was welded on. O well he still gave me five bucks better than zero. good luck.
do you have tha part number for that stabilizer stud..? thanks
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Unread 04-22-2010, 08:55 PM   #19
mongowo
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Join Date: Oct 2007
Location: Tacoma, Wa
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mine was both, it had a flange that slide inside of the other one, and then clamps overtop of the joint....we had to use a propane torch to warm em up and expand the rust and corrosion before we were able to pull them apart!!
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Unread 04-22-2010, 09:58 PM   #20
mongowo
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Quote:
Originally Posted by Couchrider View Post
Are the tubes joined by a flange or exhaust clamp?
mine was both, it had a flange that slide inside of the other one, and then clamps overtop of the joint....we had to use a propane torch to warm em up and expand the rust and corrosion before we were able to pull them apart!!
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Unread 04-23-2010, 08:15 AM   #21
ROADDOG516
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1993 YJ Wrangler 
 
Join Date: Nov 2007
Location: DERBY, CT
Posts: 359
ill get u the part # in a few hrs goin to bed
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