<![CDATA[Dumped exhaust]]>So there is a discussion on another board regarding the use of dumps before the rear axle for exhaust. One argument is that when the car is moving there is enough air movement to move the exhaust out from under the car and hence will not heat up the fuel tank. Another argument is that the dumps being so close to the tank will heat up fuel due to the exhaust being right there. There is one guy who is having fuel boiling issues which he is a attributing to the addition of dumps as he put a panhard bar on the car and could no longer run tailpipes. Whattya thin?

]]>https://fargostreet.com/topic/13695/dumped-exhaustRSS for NodeThu, 28 May 2026 14:56:13 GMTWed, 09 Apr 2008 19:13:39 GMT60<![CDATA[Reply to Dumped exhaust on Wed, 09 Apr 2008 23:25:24 GMT]]>

MisterCMK;1285618 wrote:
Don't forget, dumps also function well as a fuel tank heater and a differential heater.

MisterCMK;1286253 wrote:
Heat rises though. I would think that the heat from the exhaust coming out of the dumps would rise and heat the tank.

MisterCMK;1286328 wrote:
Yes, the under hood heat is pretty warm. However, your fuel tank is not under the hood. The fuel lines may get hot, but the fuel moves through them quit quickly. Gasoline boils anywhere from 100 to 400 degrees Fahrenheit depending on the additives and whatnot. I am not sure what the actual temp of the exhaust gasses are once they reach the dumps but it would seem to me that it is more than enough to boil the fuel that is sitting in the tank.

wtf

]]>https://fargostreet.com/post/202524https://fargostreet.com/post/202524Wed, 09 Apr 2008 23:25:24 GMT<![CDATA[Reply to Dumped exhaust on Wed, 09 Apr 2008 23:07:26 GMT]]>I think the guy is a dumb-ass

]]>https://fargostreet.com/post/202518https://fargostreet.com/post/202518Wed, 09 Apr 2008 23:07:26 GMT<![CDATA[Reply to Dumped exhaust on Wed, 09 Apr 2008 20:01:22 GMT]]>Probably. I'd say there are probably vortex type airflows with all the edges and stuff underneath a vehicle that would really heat the tank up. Kinda like a truck with no topper but tailgate up has a vortex in the back that basically cycles the same air over and over in a loop. Same principle probably would apply in small areas underneath a vehicle too and if you get superheated exhaust air trapped in one it could easily heat it up.

]]>https://fargostreet.com/post/202483https://fargostreet.com/post/202483Wed, 09 Apr 2008 20:01:22 GMT<![CDATA[Reply to Dumped exhaust on Wed, 09 Apr 2008 19:36:50 GMT]]>reflect-a-shield w/ airspace above + reflect-a-cloth

]]>https://fargostreet.com/post/202479https://fargostreet.com/post/202479Wed, 09 Apr 2008 19:36:50 GMT<![CDATA[Reply to Dumped exhaust on Wed, 09 Apr 2008 19:26:51 GMT]]>I would think that with exhaust angled down, or out to the side enough would be fine. But i don't really know.

]]>https://fargostreet.com/post/202476https://fargostreet.com/post/202476Wed, 09 Apr 2008 19:26:51 GMT