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Old 07-04-2011, 03:05 PM   #15
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As I recall from stories about the older GM 454/455 and the Ford 460 (I had an '85 460), the manifolds can get to a cherry red color when climbing hills at full throttle and low speeds. That's up around 800 Celsius if I remember my engineering heat treatment numbers correctly. There's a fair amount of air blowing through there, but the radiant heat must be tremendous.

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Old 07-04-2011, 06:18 PM   #16
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Heat/Sound Insulation - JCWhitney

This is what I used and recommend to insulate an engine housing fro heat as well as noise. Use the high temperature spray adhesive and seal the edges with the foil take.

The bubble stuff is not meant for such high heat areas and close to the engine.


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Old 07-10-2011, 08:32 PM   #17
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I have several rolls of the stuff left over from a project but would not use it under the doghouse. From their website FAQ......
"What is the Temperature Range of the Product(s)?
Reflectix® Reflective Insulation, Radiant Barrier and Foil Tape can be installed in environments with a range of -60 degrees to 180 degrees F."
'99 Coachman Mirada F53 V10
TST monitors, Scangage, AGM house batteries
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Old 07-11-2011, 01:33 AM   #18
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i installed the jcwhitney heat-sound insulation material in my doghouse in 2007. it really does quiet the engine noise and the doghouse is always cool to the touch when driving. it also helps when camping in really cold weather. the doghouse is not cold to the touch.

01 WINNEBAGO 35U W20.8.1L SW Wa, Hi. Good Sam, SKP. AMSOIL fluids. BANKS ecm program. SCAN GAUGE II w/ Ally temp. 2 LIFELINE GPL-6CT AGM Batts on their sides. TST tptts. K&N panel air filter. AERO mufflers. TAYLOR plug wires. ULTRA POWER track bar. KONI fsd shocks, toad '14 smart car
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