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In june 2012 i installed a new cylinder head built by mountain high performance, couple weeks ago the telltale symptoms of a blown hd gasket appeared so removed head & head has 2 hairline cracks between valves of cylinder #5, can the cracks be repaired or is a new head in my future? thanks for any advice
thanks for the input, i talked to Bill at mountain high performance who built the head & he said the type of cracks in my head are very common & "normal " in almost all heavily modded 6.7's, he said the cracks like mine have to be a half inch deep before reach the water jacket, he said to have head pressure tested & that he's confident the head will test good & if not send him the head & they will fix the cracks, so i am having it pressure & go tested & will go from ther, the stock head i had before one im runningnow had over 12 visible cracks in all cylinders except one & tested no good of course but i have since added compound turbos & lowered my egts by over200 degs
I have 156000 on my truck and I beat the hell out of everyday, I know I need studs but was thinking of replacing head, gaskets and installing studs. That way I know I'm safe. I will be upgrading the turbo and Arson III with 100hp injectors. If my head gasket holds out another 6 months I'll do everything at once.
Please recommend a shop that I can send my head to. Im in Louisiana if you know of any in my area.
__________________ 2007.5 CC 4x4: Fabtech 4.5" lift, 37" Toyo MT, Mini Max, Full Delete, 5" tb, SB DD 3600 ceramic, Gorilla 56 with t gripper, Amsoil Dual Bypass, Dynatrac conversion, BD Steering, Stablizer Bilstien and 5100's, S&B Intake, Airdog 165, Carli ball joints. ARP 625's.....waiting for 467.7 and fuel mods.
sorry, im in nebraska but maybe some one el closer to louisianna will recomend a reputable shop, this is my 2nd hd gasket with studs but first with head mountain high performance built for me, my cummins is a 08 4dr, ATS stage4 68rfe w5star torquecnvrtr& copilot,ATS compound turbo setup ( which i think is greatest thing since sliced bread) 125hp nozzles, airdog150, bunch of deletes,5in turbo back exhaust:,hiperformance head, autometer gauges, H&S minimax but goin to try EFI Live when get it back together
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