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[C2] Engine overheating after rebuild

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Old Nov 2, 2023 | 04:25 PM
  #41  
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Are the cooling readings via the gauge or an IR gun?
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Old Nov 2, 2023 | 06:10 PM
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Originally Posted by Nowhere Man
Are the cooling readings via the gauge or an IR gun?
The gauge. I need to use the IR gun. I will do that this weekend and let you know the result.

Rex
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Old Nov 2, 2023 | 06:14 PM
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A few photos of the fan and shroud. It is a 5 blade fan.



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Old Nov 2, 2023 | 07:42 PM
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Originally Posted by DansYellow66
Base timing of 6 degrees advanced is insufficient today and most would label as retarded timing. Yes, the manufacturer built them that way back then but they ran better (and cooler) with more base timing. I would try it with 12 degrees if you can keep base timing and max centrifugal advance to around 36 degrees. Vacuum advance needs to be “T’d” into the choke break vacuum hose from the manifold vacuum source.

But this probably isn’t the total issue so it’s good to keep looking.
I'm glad someone finally brought this up. Imho getting proper ignition timing established is the easiest and cheapest step in getting engine to run cool. 6°-8° doesn't seem to be near enough.
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Old Nov 2, 2023 | 07:45 PM
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Not going to fix your issue, but when you get to playing with the belts, looks like the inside belt has flipped? Should be flat on top like the outer belt.

Tom
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Old Nov 2, 2023 | 07:57 PM
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Originally Posted by thoyer
Not going to fix your issue, but when you get to playing with the belts, looks like the inside belt has flipped? Should be flat on top like the outer belt.

Tom
Good catch - I had looked right at it and didn't see it!
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Old Nov 6, 2023 | 09:58 AM
  #47  
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Originally Posted by thoyer
Not going to fix your issue, but when you get to playing with the belts, looks like the inside belt has flipped? Should be flat on top like the outer belt.

Tom
Tom thanks for pointing that fan belt out. I had my car NCRS Flight judged this weekend in Phoenix and they caught the same thing. I didn’t have time to fix it before. My car took Second Flight with 140 points to spare so I was happy, given everything I know that still needs to be improved.

Now back to figuring out my overheat issue. We are buying some quality gauges to test the Oil pressure and water temp before we go any further.
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Old Nov 6, 2023 | 11:18 PM
  #48  
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Originally Posted by Togaf16
Tom thanks for pointing that fan belt out. I had my car NCRS Flight judged this weekend in Phoenix and they caught the same thing. I didn’t have time to fix it before. My car took Second Flight with 140 points to spare so I was happy, given everything I know that still needs to be improved.

Now back to figuring out my overheat issue. We are buying some quality gauges to test the Oil pressure and water temp before we go any further.
I missed how did it pressure test? Good up to 20 and hold for half hour?
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Old Nov 7, 2023 | 09:00 PM
  #49  
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Originally Posted by John S 1961
I missed how did it pressure test? Good up to 20 and hold for half hour?
I haven’t got there yet. I am taking a week off and then back at it. I will post the results once I tested it.
cheers
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Old Nov 27, 2023 | 03:34 PM
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Originally Posted by John S 1961
I missed how did it pressure test? Good up to 20 and hold for half hour?
How did it go?. If you can't be sure it's holding pressure anything else is a waste of time and money. I am surprised if your mechanic can't verify this.
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Old Dec 18, 2023 | 12:18 AM
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How did things turn out?
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