1958 4104 runs hot

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1958 4104 runs hot

Home > Discussion Forum > Bus Conversions - Intercity

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All Messages in Thread	Author	Date
1958 4104 runs hot	chad	5-24-04
I have recently purchased a 1958 GMC 4104. it's a beautiful conversion, done very nicely. it does run hot though at higher speeds. in high temperatures, it gets up to 230 pretty quickly under load. if it's cooler outside, it can go a little faster before it heats up, but after a little while of hard driving, it gets hot then too. anyone else experienced this? is this fairly common? and if so, what are the fixes?
Re: 1958 4104 runs hot	Patrick Donnelly	5-25-04
You should check to make sure everything's circulating properly....you may have an oil problem.
Re: 1958 4104 runs hot	chad	5-25-04
An oil problem? do you mean a coolant problem? i don't understand the how the oil plays into this, but i'm new to diesels, please explain
Re: 1958 4104 runs hot	Patrick Donnelly	5-27-04
Hello again, If the lifters aren't getting the oil they need to stay lubricated, the engine will run hot, and eventually you'll bust a lifter right thru the top of your valve cover...oil pump may be the cause of that
Re: 1958 4104 runs hot	Erv Kallstrom	10-3-04
The Detroit Diesel sprays engine oil under pressure to the underside of the piston to help cool this engine. If your engine oil pressure is below specs, The cooling will not take place. I suspect your radiator/fan combination is at fault though because oil pressure should increase up to 45-50 lbs at higher speeds. If you attempt to use an air dam, you will definately create more problems than you solve because the corner of the coach in the airstream produces a significant air flow through the radiator (from the inside outward!)