| Author |
Message |
Jose Corona (198.81.26.104)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, October 08, 2003 - 1:20 pm: | |
Your temperature discussions being thorough relate to DD's. Are gasoline engines the same or different when it comes to the temperature thresholds? The 440 Chrysler in my GMC PG2504 (1940) will run from 190 to 210 average but will climb upwards to 220-225 going up the grapevine on a hot day. It still ran great and didn't lose a drop of coolant. What are your guys thoughts? |
Frank Allen (152.163.252.163)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, October 08, 2003 - 2:41 pm: | |
shold be ok as long as it dont boil and start loosing coolant. if it is a pressurized system can go that high , lots of modern car engines run that hot normal. the detroit is another matter
Frank Allen
4106 |
RayC (142.165.92.218)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, October 09, 2003 - 12:45 am: | |
A 1977 Dodge truck with the 440 used a 195 deg. thermostat and a 16 pound rad cap. That combination should take it to around 228 deg. before it boils. If your conversion used the original bus rad and cap it may boil at considerably less, say 212. In that case your gauge may be wrong if it is not boiling. |
BrianMCI96A3 (65.160.214.93)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, October 11, 2003 - 9:34 pm: | |
Jose, to be honest with you, as a mechanic, often when we see a more modern engine retrofitted into an older or classic vehicle (especially when the original radiator and fan shroud, or lack of one are used) there are overheating problems. Virtually all the engines of that era made much less than a couple hundred horse power, your 440 makes perhaps three times the horses, more horses = more heat. While an engine that gets hot MAY not boil over, the longer an engine runs above it's operating temp, the shorter it's lifespan. Valve guides and seats wear faster, as do piston rings... I am not saying that your engine will melt out from under the car, but think of it this way, with a flame you can heat an I beam to the point where the metal softens the metal and it can be bent by hand. The higher and hotter the flame, the faster the metal will soften. Operating temperature... and not a degree hotter if you can manage it. Add an oil cooler, mount a nice tight fan shroud, add an electric fan, or two, a bigger radiator...however you do it, keeping the engine temp rock steady will allow your engine to last far longer.
Brian |
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