muffler temperature??

mach9

mach9

TY 4 Stroke Master
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Does anyone know what the stock muffler temp. gets up to?
 
Hot...Damn Hot...Used a strap on temp gauge from a water heater and saw 172F...That can't be right but that's what it was reading...
 
Really? I was thinking like 400F or higher.
I'm looking at some Hi Performance Heat Blanket material that is rated for exhaust drag racing up to 3000 degrees.
 
The stock muffler is double walled, so the outer skin temp is questionable.
I'm searchin for a post where I thought I saw a infared temp. gun was used.
 
Looking at ice build up and a theory I have brewin.
I may be wrong, but I think the snow is hitting the exhaust and headers and almost vaporizing into a fine mist that turns to ice fast.
 
mach9 said:
The stock muffler is double walled, so the outer skin temp is questionable.
I'm searchin for a post where I thought I saw a infared temp. gun was used.
Click to expand...

That probably was me. I have access to an IR camera. In fact, I've had it at home for about two weeks trying to find time and the inclination to check the temp under the seat. I'll see if I can be any more inspired tonight. The problem will be running the engine for a sustained period to get the maximum condition. But there is still info to be gained.
 
mach9 said:
Looking at ice build up and a theory I have brewin.
I may be wrong, but I think the snow is hitting the exhaust and headers and almost vaporizing into a fine mist that turns to ice fast.
Click to expand...

This is not a theory. It's a fact.
 
I think I know where you are going with this and I was thinking along the sme lines...

If the entire exhaust inside the tunnel was wrapped with some type of exhaust wrap... would it reduce the ice build-up...

I was thinking nomex... (the stuff firefighting clothes are made of.)

I hope your scheme works!... This would be great for me since I don't always have access to a heated garage to get rid of all the ice build-up after every ride... Banging the ice out gets old FAST!

Keep us updated!
 
Mach 9...Good point the strap on temp sensor was on the outside of the stock exhaust. So I just went outside and ripped up and down my field a few times to get it warm and carefully placed the temp sensor inside and it climbed to 376F.
 
Here is the stuff I was looking at and correction up to 2000F.
http://www.heatshieldproducts.com/hp_shield.php
and
http://www.heatshieldproducts.com/hp_armor.php

It is glass fiber blanket with a aluminized covering on one side.
That side faces out and could /should be enough protection from the flying debris under the tunnel.
It zip ties on using stainless steel ties.
It dosen't look cheap though.
Plus...
I'm not going to be able to test this idea for awhile.
I can only find this stuff in the US and have to have it shipped to Canada.
Then when I get to the install etc.
 
problem is with any sort of insulation you wont get the wash cooling the exhaust and will hold heat in...get ready for melted plastic and may even the seat...

I recommend trying to coat the entire exhaust with ceramic coating.....with my attak and the ceramic coated exhaust the icing was less for sure..
 
Wouldn't ceramic coating and wrapping with some heat insulation be doing basically the same thing? Holding the heat in the exhaust?

Ceramic coating will hold the heat in a little better but still probably get hot enough to cause the water to vaporize and create ice. If it was wrapped in some insulation it would hold the heat in the exhaust but also not create lots of water vapor. I don't think it would melt anything. The insulation would be holding the heat inside the muffler better, not making the outside of the exhaust hotter.
 
The amount of energy that passes through the exhaust as heat will be the same with or without insulation. Insulation will slow the heat loss from the exhaust where it is applied but will not eliminate it. A majority of the heat normally transferred to snow and air from an un-insulated exhaust will now exit the end of the pipe, which should actually lower the under seat temp. The problems I see with adding insulation directly to the exhaust are increasing the rate of heat-affected corrosion (the pipe and muffler will be much hotter) and trapping moisture on cool down.

The insulating effect of ceramic coating on the exhaust is trivial. The layer is only microns thick and therefore would provide an R-factor of virtually zero. The benefit of ceramic coating is its capacity to slow heat-affected corrosion by providing a barrier from oxygen.
 
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