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post #1 of 7 Old 02-13-2013, 08:10 AM Thread Starter
87TPIYJ
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1987 YJ Wrangler 
 
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V8 exhaust pics

Im getting older and the true duals into 2 chamber flowmasters (cant rember the series) with turndowns before the axle is just to loud, annoying and stinks. So im going to be redoing my exhaust and I was wanting to see what other people had done for ideas. Quiet is the goal. I dont mind if im hammer down, but I want the least amount of exhaust drone possible with affecting performance. I want to run the dual exhaust out the rear, but it looks a little tight on the drivers side. If any one has done this I would love to see pics of that. I have thought about running a single exhaust, just thinking that crossing over under my oil pan inst the best for oil temperature. Any pics of custom hangers would help too. Just looking for ideas. Thanks.


Preliminary plans so far:

(2) Vibrant performance ultra quiet 1140 resonators 2.25 in/out

http://www.ebay.com/itm/Vibrant-Perf...ht_1889wt_1161


(2) Walker Quiet-Flow SS mufflers- 2.25 in/out

Still looking exact part number i need

Here some old pics but exhaust is basically the same right now.






87 YJ, 350 TPI, NV4500, 35x12.50x17, SOA, Locked front, 8.8 LSD rear, Flat skid
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post #2 of 7 Old 02-13-2013, 10:06 AM
Xzero117
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So are side pipes out of the picture ?


but really plumbing true duals on our jeeps is hard, the transfer-case really gets in the way, not to mention the gas tank

just switch out the mufflers for like the quietest mufflers magnaflow or flowmaster makes

and a single pipe exhaust is your best bet, just run a y pipe with a 3 inch exhaust, and then just simply run 1 muffler, one of the big ones that are made for full size suvs

Novak has a picture of a v8 jeep with a y pipe on their site
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post #3 of 7 Old 02-13-2013, 10:11 AM
Xzero117
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this pic might help you get an idea
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post #4 of 7 Old 02-13-2013, 12:09 PM Thread Starter
87TPIYJ
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I had side pipes before the turndowns. Im not a fan of them so that is out of the question. I have cleared my tcase with my current exhaust, so that is not the concern. My concern with the y-pipe like pictured above is oil temperature and i also have a saddle mount for my sbc. Im at work right now, but i think there could be clearence issues. I dont know how it would work but i was possibly thinking of running a y pipe after the crossmember???

87 YJ, 350 TPI, NV4500, 35x12.50x17, SOA, Locked front, 8.8 LSD rear, Flat skid
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post #5 of 7 Old 02-13-2013, 07:31 PM Thread Starter
87TPIYJ
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ok so i looked at it tonight and i cannot do a y pipe under the oil pan, my headers are angled toward the back so i would have to bend the exhaust back forward and it just wouldnt work. I think im going to dual it coming out the side just infront of the rear shackles. I think that may be my only option. I saw mavericks on his LT1 build and they look pretty good.

87 YJ, 350 TPI, NV4500, 35x12.50x17, SOA, Locked front, 8.8 LSD rear, Flat skid
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post #6 of 7 Old 02-13-2013, 09:33 PM
czjeeper
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I'm running a single 3" from the cat back using the AFE kit, substituting Magnaflows "quietest muffler in that size". It's pretty loud. I wish I would have done a single 2.5".

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post #7 of 7 Old 02-14-2013, 11:37 AM Thread Starter
87TPIYJ
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has any one done an H pipe? The only place i can think of putting it is after the xfercase. Would it even be worth it as far as resonance cancelation?

87 YJ, 350 TPI, NV4500, 35x12.50x17, SOA, Locked front, 8.8 LSD rear, Flat skid
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