Heat wrap/turbo blanket for twins?
 

Is there a thermo blanket or a product (heat wrap) for our stock twins? It seems like there should be a better way to keep heat out of the engine bay.

I did a search for heat wrap but only came up with Downpipes...

Edit: This thread talks a wee bit about people wanting one for the stock twins, any updates or ?? https://www.rx7club.com/showthread.p...hlight=blanket

Tom made one out of the heat wrap he did his down pipe with. It really helped with the under hood temps.

Anyone try something like this:

http://www.summitracing.com/parts/THE-14003/

Width (in) 20.000 in.
Length (ft) 2.00 ft.
Length (in) 24.000 in.
Wrap Material Thermo-Tec
Wrap Color Silver
Temperature Rating (degrees F) 2,000 degrees F
Installation Snap Strap
Thickness (in) 0.063 in.

https://static.summitracing.com/glob.../the-14003.jpg

I've never been a fan of exhaust wrap. It's a messy (and itchy) way to tackle the problem.

There are some ceramic coatings that can take the temps. You can have the manifold and turbine housings coated - I'm pretty sure Rich (GoodfellaFD3S) has some coatings that can do the trick.

Dale

That would be nice, but if the turbo and mani comes off, its off for good and I am going to single. I am looking for an effective track worthy "quick-fix".

The twins are packed in so tight I just can't see any way to wrap it with them on the car. Or do any other form of blanketing.

Dale

Installation with a "snap strap." Anyone know what a "snap strap" is or how it works?

i dont believe it really makes you itchy, i mean maybe before you put it on, but i just went under my car to install a new wideband and grabbed mine a couple times and i didnt feel itchy or anything, or it could of just been me

I just read a thread the other day here in the forum (somewhere, I forget where, maybe Mr. Links knows) where an FD had an underhood fire due to a small oil leak soaking the turbo blanket, and then the blanket caught fire.

Lesson: if you have a turbo blanket, it could hide a small oil leak, and the blanket should be removed periodically to check for leaks. Easy enough on a single, pretty hard with twins.

Sure you can insulate the twins + exhaust manifold, and it works great. I made blankets for my BNR's using refractory insulation blanket for the exhaust manifold and turbos and fixed it inside of the oem heatshields. Additionally, I also lined other clearance challenged heatshields (& turbo lines) with a thinner wrap type insulation (similar to the downpipe wrap), about 1/16 thick. See attached pics.

This thermal management has been in use now 3yrs, 30k+ miles and the effort was very worthwhile. There have been no know ill effects so far. Please note that I have no fluid leaks, but I do think its a valid point to avoid saturating any insulating material in the interest of safety.

NOTE: While ceramic coatings have their place, refractory insulation is a much, much more efficient and effective way to insulate than any ceramic (barrier) coating; hence blankets are my first choice for this application.

Pettit Racing has this:

http://pettitracing.com/rx7/index.htm

and Turblown.net has a LIM heat blanket. I have the 20B version:

http://turblown.net/store/index.php?productID=56

they already have an OEM heat shield...

Which can stay and then you add the extra heat protection.

I don't know if the Pettit kit works but somewhere I recall Pettit posted up nice decreases in AITs. I can attest to the value of the turblown LIM heat blanket. Keeps the heat from the turbo away from the engine.

I did exactly the same thing using the Thermo-Tec aluminized 1500 degrees sheet with the OEM heatshield. It has held up fine over 6 years and 29K. I tried lining up the area on the fender opposite from the downpipe but engine movement caused the downpipe to tear apart the lining on the fender wall. What I have done now is to partially wrap the downpipe as it comes out the turbos to the area near the cat.