Alloy Heads and towing, how to help with overheating probs.
Submitted: Wednesday, Apr 02, 2008 at 20:25
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Member - Axle
Was sitting with a group of tradies the other day at lunch, and
the conversation of towing with cars, trucks, etc, got underway, ...lol, but one guy made a statement that i've taken on board; and that was inregard to towing up a looong
hill, then going down the other side, letting it go down on overrun with a tap on the brakes now & then. Not good for alloy heads as temps rise a lot more than shown on the guage, so its better to try and drive with a bit of throttle so as not let it cool to quick when on the down
hill run.
Not allways possible, but alloy heats and cools very quick, so in my opinion i think he was right in what he said.
CheersAxle
Reply By: Mick15 - Wednesday, Apr 02, 2008 at 21:39
Wednesday, Apr 02, 2008 at 21:39
yea, i see what they are saying, obviously that wouldn't apply to a diesel as it will run cooler when lean, but with aluminium it conducts heat roughly 4 times the rate of steel,
Therefore i would assume that if there was any excessive heat generated then it would be wicked away from the combustion chambers fairly quickly and provided the cooling system is in good nick should then be transfered away...
Maybe if your coolant level was low or had an air pocket in the head there could be problems though, i'd still think that there would be more heat generated going up a
hill under full power.
imho :)
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