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Old 02-26-2019, 08:33 AM   #15
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Point of clarification: Steel melts at approximately 2750 degrees Fahrenheit. Depending on the alloy, etc.

Other factor such as erosion, fatigue, loss of hardness, etc. happen at much lower temperatures than 2750 degrees Fahrenheit.
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Old 02-26-2019, 09:40 PM   #16
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Originally Posted by surftalks View Post
Point of clarification: Steel melts at approximately 2750 degrees Fahrenheit. Depending on the alloy, etc.

Other factor such as erosion, fatigue, loss of hardness, etc. happen at much lower temperatures than 2750 degrees Fahrenheit.
You're talking about various steels, exhaust valves are totally different.

You don't need to believe me, simply visit any diesel engine uprate website and do some reading.
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Old 02-26-2019, 09:56 PM   #17
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Actually the 1350 f limitation is in the exhaust manifold, which is of course much cooler than what is happening in the cylinder. In any case, would not modify any diesel without installing a pyrometer. EGT's give you an immediate indication of engine overload.
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Old 05-10-2019, 04:52 PM   #18
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I know I am a little late to this party, I have a 2003 Beaver with the 350 ISC Cummins and the read radiator. I needed to replace my radiator and found that SOURCE Engineering had a low drag fan upgrade. SOURCE claimed up to 40hp rear wheel hp, so I gave it a try.
Nice bump in hp that I can feel while towing my 7000lb enclosed trailer, I have gained around 5 -7 MPH up most of the grades here on the west coast (Cajon, Grape Vine). This is for a rear mounted fan, I have never seen temps over 204 degrees and that was pulling Grape Vine throttle down in 100 degree outside temps.
No EGT temps to worry about, much quieter fan noise all good!
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Old 05-10-2019, 09:01 PM   #19
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Originally Posted by BEAVERBOY View Post
I know I am a little late to this party, I have a 2003 Beaver with the 350 ISC Cummins and the read radiator. I needed to replace my radiator and found that SOURCE Engineering had a low drag fan upgrade. SOURCE claimed up to 40hp rear wheel hp, so I gave it a try.
Nice bump in hp that I can feel while towing my 7000lb enclosed trailer, I have gained around 5 -7 MPH up most of the grades here on the west coast (Cajon, Grape Vine). This is for a rear mounted fan, I have never seen temps over 204 degrees and that was pulling Grape Vine throttle down in 100 degree outside temps.
No EGT temps to worry about, much quieter fan noise all good!
Is it a Horton variable speed fan conversion ?
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Old 12-04-2019, 02:47 PM   #20
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EDIT works!!!
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