Straight pipe melting side panel?

[catmaster66]

I've been reading on here that some guys running straight pipes have been melting their side panel and belly pan. I am curious if anyone can explain to me why this is happening cause I am curious. It makes no sense to me that if you put a free flowing pipe on there with no restrictions that it can create and disperse more heat than a muffler with chambers that retain heat because of the path inside the muffler the exhaust has to take before exiting. I'm curious if its because of air flow issuses or if there is something I don't know about how these beasts run! ? I'm all ears to hear people's thoughts on why this might be happening and people's experiences with aftermarket exhausts, especially straight pipes.

Thanks!

 

[ReaperMotorsports]

I havent had any problems running my custom 3" straight pipe the exits out the side wrapped in exhaust wrap, last year I didnt have it wrapped and had the stock downpipe on it and still didnt have problems. I have my battery located in the same area and have no problems. Like you said its a free flowing system nothing is holding the heat in.

 

[Jeff C]

If you have a look at the stock muffler, that muffler is insulated pretty well. The heat does not get as much of a chance to transfer because of the insulation.

Heat evacuation is not as good on any non insulated muffler/pipe set ups, as there is nothing to stop the heat from transferring to other components of the sled (Side panels for example)

 

[undercat]

straight pipe

went to a aftermarket can which produced quite abit of heat,then went to a straight pipe and no prob with heat at all.you can actually put your hand on it and its barely warm.running mbrp straight pipe with alittle venting by my knee pads.

 

[Bendy]

Turbo Dynamics 3"

My TD 3" exhaust gets hotter than a firecracker! Its better now with the venting and other mods. I'm putting my EVO blankets in tonight and wrapping the exhaust with 2" wide black header wrap. This should help substantially.

 

[sledking120]

my DD racing straight pipe got warm but never melted anyhting but i still put heat warp on just for better under hood temps

 

[UtahEdge]

My straight pipe melted the h3ll out of my belly pan that the side panel sits in and just my luck the right side is more than twice the price of the left side. It hasnt done anything to the side panel though. Im not sure how it happend.

 

[Sage Crusher]

Heat Hot WOW!!!

On some of our sleds the D&D got hotter than H*ll
it is way thin and the heat just radiates from it. No melting of the belly pan or rubber seal thought
..I am running the cat vented side panels and the D&D made it's modification from the heat.....ZERO insulation- plenty of reflective foil tape.... If someone wants the this straight pipe I will make them a heck of a deal.....Running EVO 2.5 and way way less of an issue.
Sitll header wrapping the down pipe.....

S/C

 

[Jeff C]

The only thing I can see happening with the straight pipes is that the pipe is so skinny compared to any muffler set up, that the heat starts to radiate from a point that is further away from any panels and has a chance to dissipate.

I would just take that fabric header wrap, and wrap the heck out of any aftermarket can or straight pipe set up. Contain that heat as long as possible.

If all else fails, go to home depot and get that water heater blanket and wrap that around it,,, LOL

 

[galljr13]

No issues with my 3 inch straight pipe. About 210 miles on it now. Warm but never hot side panels.

 

[Sage Crusher]

Pic's of that indestructable pipe..please...it's got to be blue at a min....
My D&D is thin and that radiates heat.....

S/C

 

[galljr13]

Its got a little blue to it and is polished stainless steal. I will take some pics tonight. I got a bunch of work to do on it anyway. Got 4 days of hard riding down by Wolf Creek this weekend so we will see if things change.

 

[Sage Crusher]

Hope you get some fresh- was down there 2 weeks ago and Hmmmmmm...- WE ALL NEED SOME FRESH POW

S/C

 

[mkinak]

My stock muffler melted small areas and reshaped most of the plastics. The aftermarket exhaust I have now and one previously was a lot cooler. I don't think the stock exhaust let the engine breathe enough. Stock, I couldn't even touch the metal where the seat heat switch is.

 

[galljr13]

500+ miles with 3 inch straight pipe, no melting, first belt blew at 475 miles. here is a pic of the pipe.

 

[RCR3]

SIMPLE FIX HAS ALWAYS BEEN HEAT TAPE! ANOTHER GOOD THING TO DO ALSO IS PAINT THE INSIDE OF YOUR PANEL WHITE OR SILVER WHERE YOU NEED TO!