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someone asked how to tell when the engine is under 300 degrees .you can buy a pyorometer guage for your truck. this is a gauge that goes right after the turbo and tells the temp coming directly form the turbo.the way it works is you drill snd tap a hole in the exhaust manifold .the sensor goes into the exhaust manifod then the gauage to the cab of the truck as you tow you will see how hot your egine is getting.if the engine goes above 1300 degrees back off the throttle and the temp will come down .before shutting down the engine watch the gauge till it gets below 300 or the turbo will burn the oil on the turbo bearings.this is called cokeing the turbo.also when drilling the exhaust manifold you grease the drill and tap so the drill cutings and tap cuttings will stick to the drill and tap.when finished drilling and tapping run the engine to blow any cuttings that may have fallen.before installing the pyorometer.you dont have to worry about the chips because this is the exhaust manifold the chips get blown out the tail tipe and does not got in the engine.you can find this gauge on the internet
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