Generic? IM Heat Shield Gasket?
Thread Starter
Wookie Nation
Joined: Apr 2005
Posts: 441
Likes: 0
From: California
The latest. Sales from http://www.daytonimports.com emailed me to let me know that there IM heat shield gasket is 100% phenolic. Link to product on Ebay here (http://cgi.ebay.com/ebaymotors/ws/eB...spagename=WDVW)
This would seem promising, as this is the same material as other quality IM heat shield gaskets. I could not find any additional information on their website for this product.
The following information regarding the thermal conductivity of a phenolic heat shield is from Outlaw Engineering which makes a similar product.
"ThermoBlok spacers are made from a laminated phenolic composite with a thermal conductivity of 0.29 W/m*K. Aluminum on the other hand has a thermal conductivity of 150 W/m*K, more than 500 times higher. You must also remember that there is a gasket, commonly steel (20 W/m*K thermal conductivity), placed between the manifold and head. Replacing the 0.025" thick steel gasket with a .250" ThermoBlok thick spacer will conduct an amazing 688 times less heat (yes, that's nearly 70,000% reduction!).
The ThermoBlok spacer material also exhibits high stiffness and compressive strength, can withstand temperatures up to nearly 300°F, and has a thermal expansion coefficient very similar to aluminum to increase sealing capabilities."
[NEW RELATED QUESTION] - If the stock gasket is .025 and the heat shield gasket is .250 will I need longer studs for my 91 Teg LS B18A? Should I just go with bolts?
This would seem promising, as this is the same material as other quality IM heat shield gaskets. I could not find any additional information on their website for this product.
The following information regarding the thermal conductivity of a phenolic heat shield is from Outlaw Engineering which makes a similar product.
"ThermoBlok spacers are made from a laminated phenolic composite with a thermal conductivity of 0.29 W/m*K. Aluminum on the other hand has a thermal conductivity of 150 W/m*K, more than 500 times higher. You must also remember that there is a gasket, commonly steel (20 W/m*K thermal conductivity), placed between the manifold and head. Replacing the 0.025" thick steel gasket with a .250" ThermoBlok thick spacer will conduct an amazing 688 times less heat (yes, that's nearly 70,000% reduction!).
The ThermoBlok spacer material also exhibits high stiffness and compressive strength, can withstand temperatures up to nearly 300°F, and has a thermal expansion coefficient very similar to aluminum to increase sealing capabilities."
[NEW RELATED QUESTION] - If the stock gasket is .025 and the heat shield gasket is .250 will I need longer studs for my 91 Teg LS B18A? Should I just go with bolts?
Thread Starter
Wookie Nation
Joined: Apr 2005
Posts: 441
Likes: 0
From: California
More updated info on generic intake manifod heat shield gasket
Update: daytonimport.com Sales emailed me again, they say their product is rated to 400 degrees[B]. They mention that if your intake manifold ever got that hot it would mean that your engine had blown up. In addition, I believe the same product from outlaw engineering is rated to 300 degrees[I] - "The ThermoBlok spacer material also exhibits high stiffness and compressive strength, can withstand temperatures up to nearly 300°F, and has a thermal expansion coefficient very similar to aluminum to increase sealing capabilities.". Again, to me this indicates a quality product (100 degs higher than a proven product). I'm planning on getting one off Ebay and installing soon, I will post the "results" (non-scientific feelings about before/after differences in performance
. One other thing, all you get from these guys is the gasket, absolutely nothing else. They say to just use your stock studs.
. One other thing, all you get from these guys is the gasket, absolutely nothing else. They say to just use your stock studs.