No. Those aren't made for high temperatures, and they have glue mixed into the fibers that will burn. I like the looks of the wrap it moldable sheets these guys sell.
I would make something like this:
https://www.eliseparts.com/img/up/06...otus-8b402.jpg
then mold the insulation onto it, let it harden, then make another metallic cover for that.

 

Or buy a turbo blanket

 

I got the big box of foil.

 

 

I can confirm.
Bump the exhaust housing after a drive. Turns skin crispy white.


I have touched a turbo blanket after a 20min Cruise a few good throttle blips.
It’s hot but didn’t loose finger tips. Lol

 

Instead of a Japanese foil ball, You're going to make a Chinese foil blanket?!

 

I have to second this. I'm sure your going to make as much or more power than I am. I have ALL of my hot pipes (including the driverside manifold) ceramic coated. Then I wrapped all of my hotpipes (minus the dr. manifold) in titanium header wrap. I also went all the way down my downpipe to the v-band. Just crusing around on an 80* day the hood is hot enough to cook an egg. And I have a HUGE blanket on mine. It is thick enough that I have to pull it off to get my oil cap off. LOL. So it is litterally just laying on top of the turbo.

Any one that is not wrapping and covering turbos is not making much power or they have huge holes in the top of their hoods to cool stuff down. If I make a real hit off of anything over 14-15psi I can still see my turbo manifold glowing red through the cracks in the header wrap.

 

Our of curiosity, would there be a material to make your own "heavier duty" turbo blanket?

AL foil has a melting point of ~1200* so that's not a good option. What about Ti Foil? Or a ceramic insulation? Some ceramic insulation I deal with are good for 2,200*-2,500* constant.

 

Oh I’ll be running a blanket and wrapping my downpipe and crossover. You guys wrapping your manifolds also?

 

Yes. Wrap everything. I double wrapped all my pipes and double sleeved plug wires and still melted some.