insulating heat shield on m796

[wannabfast]

well in an effort to save the passengers' boots, they put on these heat shields.. but they get real hot... so i took it one step farther...
stock shield cleaned up and ready for insulation


cut the approximate amount needed to cover inside of shield


affix to inside of shield and cut out the dimples for the mounting hardware


looks stock again


should reduce the surface temp of that shield quite a bit now...


repeat on otherside
im going to do a comparison on an uninsulated side vs the one i just did in the next day or so, just to show how much it can deflect heat away from the shield and back to the muffler... or at least away from the passenger's feet enough for a comfortable ride

[thought]

i wish they would update the termi's to the new style heat shield...  really annoying that you have to use the old ones for them.

[wannabfast]

now i just went for a quick 6 mile jaunt and i got it up to 2 bars on the temp gauge, took some heat measurements
one side had insulation, the other side didnt

muffler body, no shield 234F


shield, no insulation 155F


shield with insulation 127F


so there is a significant difference with this little amount of insulation

[Howie]

Quite significant.  I'm sure whatever insignificant weight penalty there is could be saved somewhere else.

[ManaloEA]

What kind of insulation did you use?

[mysticbluex3]

Thats a cool temperature sensor.  How does it work?

[wannabfast]

What kind of insulation did you use?

it some cheap ebay stuff i got from my friend, not sure which one, but its real thin, maybe 2mm? most of the thickness is from the adhesive backing

Thats a cool temperature sensor.  How does it work?

its an infrared temp sensor gun made by raytech, retails for like $80, but i think you can find it online for $50
the laser is just to tell you where its pointing
taken from how stuff works
"Infrared Thermometers

measure the infrared (heat) radiation given off by an object to determine its temperature. The pyroelectric thermometer contains a type of crystal that produces an electrical signal whose strength is proportional to the infrared radiation to which it is exposed. The most familiar use of such thermometers is in ear thermometers that measure infrared radiation from the tympanic membrane (ear drum) to determine body temperature. Other types of infrared thermometers include bolometers and pyrometers."

i rode into work today, which is about a 30 minute/20 mile commute, and you could touch the shield with your BARE hand and not get burned.. WOOOOOO happy mod is this

[emanon]

How much time elapsed between the sample of the insulated and non-insulated side and what was the ambient temperature?  You need to account for the heat dissipation already occurring; 28 degrees F does not seem like much of an improvement to me.

[wannabfast]

How much time elapsed between the sample of the insulated and non-insulated side and what was the ambient temperature?  You need to account for the heat dissipation already occurring; 28 degrees F does not seem like much of an improvement to me.

the sample between the insulated and non insulated was probably about 10 seconds, give or take 2...
ambient temperature at the time was approximately 68F but like i stated before i only took it out for about 6-7 miles so it probably didnt get as hot as it could have, but riding into work this morning, it was at 3 bars, and i took a temp measurement and it was about 97, but it was also about 58 out too