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Message: [QUOTE="tbsimmons, post: 1199584, member: 2026"] The 2 failures I had that blew the middle out were 5 Silicone layers and 4 reinforcement layers. I have one that was on the truck for only 2 trips over a grade and it already started to expand approx. 1/4" larger in diameter in the middle. I was told burst was 200 PSI and working was 50 PSI. Heat was the a reason the stock upper boot was replaced with an orange layer on the inside. I blew the stock one, but it ass holed itself, the middle didnt blow. I have a crankcase vent re-route so oil was not an issue with the silicone ones only the stock one. I still go back to heat. Silicone can not take a continuous 400+ degrees. I dont have temps coming out of the high pressure turbo but I bet they are close to that when pulling long grades loaded down. [/QUOTE]

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