Heat-proof padding suggestions?

[Ben_GTI]

Muffler Temps will be much higher than your sump temperature, hence if the muffler packing suits then I don't see any reason why not. The Sump is not a cooling device, hence insulating it may make the radiator work a tiny bit harder, but no way noticeable.

Keep in mind that if you pack the space, pressure from the plate will be transferred to the sump when you hit things. I guess it's up to you to figure out how much force the sump can handle.

[Oneofthegreats]

The Sump is not a cooling device, hence insulating it may make the radiator work a tiny bit harder, but no way noticeable

Hate to say it, but the sump "is" a cooling device.

That's one of the main reasons why manufacturers made them out of alloy over steel.

Alloy sumps also can provide an increase to alloy block rigidity too!


Even BMW & other manufacturers desinged fins into their engine sump's (as far back as the E21 & earlier!), diff housings & trans housings etc. To provide extra cooling.