Quote:
Originally Posted by JellyStyle
PTP has been doing N63 turbo blankets for about 10 years now, with a ton of data showing that it actually lowers the temps because the material absorbs the heat into the material, and then uses it as a radiator, it doesn't trap the heat. All their science is on their website, and its been proven why so many folks run it for almost every turbo setup out there.
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I'd try to keep in mind the website is trying to sell you something. It's probably important to note exactly what their data shows, which is that something generically labeled as "underhood" temperatures are lower. A blanket can't actually lower the amount of thermal energy produced, it still has to go somewhere, so these effectively increase the operating temperatures (or at the very least, the thermal loading) on the hot portion of the turbo by holding it in. The high temperature of the exhaust gases flowing through the hot side of the turbo remains the same, and the blanket decreases what the turbo casting can dissipate into its surrounding environment. With a blank slate, you likely could compensate for this through the design of the cooling circuit, but you still likely increased thermal load at the bearing, which is already hard on oil.
These engines are harder than average on oil, with pretty highly stressed cooling circuits as-is. Personally, I'd think twice about increasing the thermal load they must manage.
These kinds of wraps and blankets are great on custom builds and highly modified cars where you're trying to protect something from getting too hot because the cost of a rigid, stamped heatshield will never make sense for a 1-off.