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Unread 05-01-2007, 04:56 PM   #1
kmjbpkohler
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Join Date: Apr 2007
Location: winder georgia
Posts: 8
84 GW 360 exhaust question

I'm wondering if anyone is familiar with this exhaust. Can u tell me if there are doughnut gaskets between the bottom of the header and the exhaust pipe. I can't find any, or they are fused to the header bottom so well that you can't see a seam there. Also, can anyone tell me what the heck that little flapper thing is on the bottom of the passenger (starboard) side header with the spring attached to it? Any information would be helpful.

Jeeps are alot like houseboats

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Unread 05-01-2007, 07:03 PM   #2
kmjbpkohler
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Join Date: Apr 2007
Location: winder georgia
Posts: 8
Ok, got the "flapper" off, do I need to leave it on or is it ok off? Nothing is attached to it as far as a sending unit or vacuum line. By the way, I now know this ia a "heat riser damper" aka flapper
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Unread 05-04-2007, 09:14 PM   #3
jeepfan93
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1991 FSJ Wagoneer 
 
Join Date: Mar 2007
Location: toms river NJ
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Unless yopu building a custom exhaust, the Y pipe will not bolt back up dsue to the extra distance from removing the flapper. And there should a dougnut on the port side manifold.
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Unread 05-17-2007, 11:42 AM   #4
carnuck
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1984 J-Series Truck 
 
Join Date: Nov 2004
Posts: 3,212
If you don't have a functional heat riser, your motor will take longer to warm up and fuel economy will suffer. (it forces exhaust through the port in the intake to the other side and out that exhaust until the motor is warmed up) If you have a warm climate, it won't matter much.
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