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Turbobs Overheating

M

Mike McGuigan

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"I have a pair of 8V92 Detroit

"I have a pair of 8V92 Detroits on a 52 Hatteras (1986) Engines were just both overhauled with factory rebuilt turbos (dry turbo's). Book says temp should run about 790 degrees. All are ok but one running as high as 1200 degrees before I shut it down. Tested all turbo's with gauges and heat lazer gun. All are cosistant with the one turbo running 1200 degrees. Back pressure of exhaust is OK and no blockage. What else could possibly cause this overheat???

Thanks,

Mike"
 
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