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Overheating big block - could use some suggestions...?

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Overheating big block - could use some suggestions...?

 
Old 05-19-2019, 05:10 PM
  #41  
BigBill94
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Originally Posted by PAmotorman View Post
go to the auto parts and buy a brass cup type expansion plug that is a snug slip fit in the hose and drill a 1/8" hole in the center. https://www.clipsandfasteners.com/7-...gs-p/a3952.htm. not the correct size just to show what to buy
I'll do this for sure, thank you for the tip.
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Old 05-19-2019, 07:55 PM
  #42  
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Originally Posted by BigBill94 View Post
Interesting. For a street motor you definitely want the bypass to eliminate steam pockets. Restricting it though would still allow for the function without all the bypass flow.

Not sure I've seen a bypass hose restrictor however..... I suppose you could use a 1/2 NPT -> -3 or -4 AN, sort of an exotic way around it however.... Any suggestions?
- AN fittings for water cooled exhaust for boat headers use restrictors in the water lines to adjust the amount of water flowing through the header primary tubes.
West marine, Bassett Racing Headers and Earl’s sell them.
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Old Yesterday, 09:15 PM
  #43  
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Rather than check the cooling system to hold pressure, I did a compression check. I have no oil in the water and no water in the oil

Readings:

#1 210.5
#2 214.5
#3 (tool won't fit due to borgeson box, gave up after about 45 mins)
#4 191.5
#5 184.5
#6 191
#7 186
#8 211.5

I'd surmise with the 184.5 reading in #5 and 186 in #7 that the driver's side head gasket is the source of my cooling problem. BBC with flat tops and 100CC chamber heads.
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Old Yesterday, 09:25 PM
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I'm surprised on one mentioned head gasket to block coolant port missmatch. One of my Big blocks behaved the same way. We tore it down to find Siamese flow gaskets on a series flow block..

Pm or email if you would like to learn more.
Best,
Milan
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