Quote:
Originally Posted by a911sc
........ Setup one or two external fans that blow into the radiator and see if this improves things ........
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From:
http://classicoldsmobile.com/forums/...html#post35908
Quote:
Originally Posted by gibbo69olds
........ Coupe, It overheats in all circumstances. The car has really good power ........
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It has already been determined that it overheats on the highway, which means that it is not an air flow problem.
Quote:
Originally Posted by a911sc
........ If the supply hose to engine is significantly colder than the return then the coolant is staying in the radiator too long ........
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To the contrary: The cooling media is only significantly cooler when the entire system is working properly.
Too long = restriction = lack of flow = overheating.
Quote:
Originally Posted by a911sc
........ I think you said you have run a 160 ........
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And he also said, it was working properly.
Quote:
Originally Posted by a911sc
........ Have you ever run without a thermostat. Might be worthwhile as the flow should be greater as well ........
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And that would prove what?
Quote:
Originally Posted by a911sc
........ vacuum advance can be connected to either manifold vacuum or ported vacuum ........
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There is no reason logical reason to use direct manifold vacuum.
Quote:
Originally Posted by a911sc
........ Manifold vacuum will give full advance at idle ........
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Poor substitute for an optimal initial setting.
Quote:
Originally Posted by a911sc
........ then will drop off and come back up as the engine is revved ........
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Exactly the opposite of what is needed.
Quote:
Originally Posted by a911sc
........ ported vacuum will be zero at idle ........
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Right where it should be.
Quote:
Originally Posted by a911sc
........ then will gradually increase as the engine is revved ........
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Not even close.
As soon as the throttle is opened, both ports draw vacuum from the same intake manifold.
Quote:
Originally Posted by a911sc
........ I don't think one is significantly better than the other ........
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Not even close.
Quote:
Originally Posted by a911sc
........ I have been fighting a pinging problem and have been playing with different advance springs ........
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Interesting topic for a new thread.
Norm