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Topic: Exhaust Wrap (Read 670 times) previous topic - next topic

Exhaust Wrap

I am redoing my exhaust system and have a 5'' 45 degree pipe coming off the turbo going into a 5'' 90 degree elbow and turning down. It is real close to the Bed framework in the bend that turns down. I am going to need heatproof this pipe and or area somehow. How much heat transfer have you seen with the wraps you guys have used.
91 GV U300 Unihome 40' Build 3811
6V92TA Detroit

Re: Exhaust Wrap

Reply #1 –
You probably saw the photos of the insulation after I put a match to it. It's super flammable so the first think I did was remove all if it, replace with a layer of compressed R-19 and then cover with Backerboard. Your wrap will lower the temps and take a thermal load off the DDEC ECU. I don't see how it survives in the heat. Probably the diesel flowing through it cools it enough. The combination of insulation and Backerboard will lower the bed temperature in summer. Wrap should give a little more boost. Many had the wrap OEM. Ours didn't.

One member already lost his U300 when a clamp came off the turbo thanks to shoddy shop work that had been recently done.

Most of the wraps are very inexpensive on eBay. The Detroit takes the large wrap.

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)

Re: Exhaust Wrap

Reply #2 –
How close is it? That well help determine what's Best.
Old Phart Phred, EIEIO
89 GV ored 36' #3405 300 hp cat 3208 ATAAC side radiator, mountain tamer exhaust brake

Re: Exhaust Wrap

Reply #4 –
Stump,

Rather than a wrap type material for that close of clearance look for some 1" thick Kao-Wool.  This is high heat blanket material we used in the power plant business. If you have someone that works in any type of heat generating business they will have access to some scraps that you may be able to mooch for free.

 Mike
Pamela & Mike 97 U 320

"It's not what happens to you, but how you react to it that matters."

Re: Exhaust Wrap

Reply #5 –
Kaowool?
2000 U320 mid entry  #5688
2006 Jeep Liberty


USMCR retired
SDFD retired
FEMA US&R TF8

Re: Exhaust Wrap

Reply #6 –
If the wood is vertical a refective metal plate with an airspace behind it will keep the wood cooler.
Old Phart Phred, EIEIO
89 GV ored 36' #3405 300 hp cat 3208 ATAAC side radiator, mountain tamer exhaust brake

Re: Exhaust Wrap

Reply #8 –
Quote from: stump –
Maybe 2 inches
Yes, two inches plus after I installed the board and insulation. Here is a photo of what the stuff looks like when on fire.

Here is what Hardie Backerboard looks like in a comparison to wood and vinyl siding.

https://www.youtube.com/watch?v=XrIizexw7lw

Hardie Backerboard with a blowtorch on it:

https://www.youtube.com/watch?v=C0hYlXnPewM

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)
 

Re: Exhaust Wrap

Reply #9 –
A real life fire on Backerboard house siding. The board can also sit in water for a month without any effect. This is why I lined our fridge compartment along with the engine compartment.

https://www.youtube.com/watch?v=FK9H_r3iJLk

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)