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Original Message
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| RE: overheating 428 cj |
| By KarlJay - 04/19/2001 10:09:47 AM; IP 63.169.132.218 |
A few things to consider:
A high flow water pump, Edelbrock makes a nice one or get an impeller backing plate for the stock one (I think Jegs sells these). Some rebuilt water pumps use the cheap stamped steel impellers instead of the cast type, the cast type flow better. Get smaller water pump pully, the stock A/C pully is smaller on my 73 F250 than the non-A/C pully.
Bleed all the air from the system, if the rad is lower than the heads, get the add on fill tank that attaches to the intake. Run 25% antifreeze and 75% water. recheck the timming as it can have a big impact. The fan should be 1/3 the way into the shroud.
If that doesn't work, consider an alum rad from Griffin, not much more than a new one and they custom make them for your app. An engine oil cooler.
If it happens only during idle, Ford used a thermo switch for vac adv to dist on some to raise the idle when the temp went too high, but that only helps during idle.
I'm surprised to hear the additives didn't work, I've heard great things about Water Wetter and ProBlend's stuff, what products did you try? |
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