Thread: Engine Heads
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Old 07/31/2011, 03:40 PM   #17
robert campbell
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Location: Bremerton Washington
Joined: Apr 07
Posts: 3,646

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Tom,
DO NOT pull the heads yet.

Verify that the themostat is working properly by putting it in a pan of water on the stove and use a candy thermometer and watch it open. Does it open when it should? A 180 termo should open right around 180 and be fully open within around 5 degrees of 180. Say 185.

I still think you have a new motor that is mis-timed and does not have enough advance. The more an engine is retarded in timing the more heat it develops at idle. Do you have the dual diaphram distributor?

Rob
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