heat shield mounting opinions welcome

[TLCHopII]

Looking to fabricate some exhaust heat shields. Two seemingly obvious questions come to mind.

1. What material for the shield? stainless = low heat transfer but stays hot longer once heated; aluminum = high heat transfer so less effective of a barrier(?) but holds heat poorly
2. where to mount them? to the heat source ie the exhaust pipe/header; To the device to be protected ie starter, oil filter and/or clutch slave

thank you in advance for your opinions!

 

[DPHFJ40]

Aluminum works best for reflecting radiant heat. Would be either mounted directly to the part to be protected or with an air gap. (glue aiuminum foil to firewall/floorboard, wrap harnesses/hoses/filter.)
If you mount to the hot part, stainless stl lasts longer. needs air gap on both sides of the shield in the area you're trying to protect

 

[D'Animal]

If you are running a factory laid out exhaust, there are Stainless Steel heat shields already in place. If not, many sell them when modifying or scrapping out a rig.

X - 2 on the air gap on both sides.

 

[bsevans]

Why don't you wrap them with exhaust wrap and/or have the headers/exhaust manifold ceramic coated.

 

[D'Animal]

After reading you post closer, what engine do you have?

The starter should be on the oposite side of the motor of the stock F type exhaust.

Looking to fabricate some exhaust heat shields. Two seemingly obvious questions come to mind.

1. where to mount them? to the heat source ie the exhaust pipe/header; To the device to be protected ie starter, oil filter and/or clutch slave

thank you in advance for your opinions!

 

[TLCHopII]

Thanks for the responses.

bsevens:
Thought about wrapping the exhaust. Concerned about the wrap holding moisture reducing the header life. I have no experience with wrapping headers/exhaust. What is the maintenance related with it? As for ceramic coating; would rather get what life the existing headers have in them before replacing.

D'animal
Specs:
383 SBC, headers inboard of the frame rails, cross over 2 into one.
oil filter with in 1.5" of the exhaust (oil cooler in the system)
Starer; 2" or so gap btn the exhaust. Starter lopes after the engine heats up. Maybe heat related.
If I do one for the starter then might as well do the oil filter and maybe even the clutch slave cylinder.

"Air gaps" are in my future