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timc timc is offline
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Join Date: Oct 2006
Location: Chas, SC
Posts: 1,041
Originally Posted by strokher racing View Post
Sorry guys I have been on vacation. I forwarded them rarlyl8's concerns. Ptp responded right away saying the following

As you've suggested, the added heat in the turbocharger exhaust chamber, combined with the fact that this heat dissipates more slowly via natural convection with a turbo blanket installed, does make it more critical that a proper 'cool down ' process be instituted following every period of spirited driving. As you've indicated, there is a bit of a trade-off here. You get improved turbocharger performance and better engine bay heat protection with a turbo blanket, but you also have to be a little more responsible with the cool down process than you would with a factory setup. All turbocharger's cooling systems (either oil or oil and coolant) are designed to pull heat away from the turbocharger's bearings. The systems are designed to handle the dissipation of very high heat loads - much greater than your turbocharger would ever see, even with a turbo blanket. However, the cooling system is only effective while the engine is running.
(while the oil and/or coolant is circulating) The car's operator must allow the cooling system to do it's job to bring the turbocharger's temperature back down to normal levels after any period of aggressive driving. We recommend that you not shut off the engine directly after a hard run. We advise that you allow one to two minutes of cool down before killing the engine. You can either do this by waiting until that time has passed yourself or by installing a turbo timer. The real danger of heat in a turbocharger occurs when a very hot turbocharger is allowed to sit with no oil/coolant circulating. Heat soak occurs, causing the temperature of the turbo to actually rise for a period after the engine is turned off. When this happens, the oil in the turbocharger can heat to a point beyond what it's capable of handling. It can coke (cook and harden) and stick to the walls of the oil pathways in the turbo. This can eventually choke off the supply of oil to the turbo, preventing the cooling system from doing its job. Long enough periods without proper cooling can cause premature bearing failure in the turbocharger. All of this can be avoided by simply allowing a proper cool down after each period of spirited driving. We have seen absolutely no evidence that the usage of a turbo blanket reduces the lifespan of a turbocharger anywhere when the proper cool down process is instituted consistently."

Thanks a lot Edward, we have engineers and mechanics and very smart brains who work at PTP and we are glad to answer every concern that anyone might have.
PTP makes this product? What else would you expect them to say? Not sayin good or bad just sayin.....
1986 930
Gone:71,2,4 914's, 70T, 71T(RS),77S
Old 04-10-2013, 01:32 PM
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