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12-03-2020, 08:20 PM | #1 |
Member
Join Date: Nov 2020
Location: Upstate NY
Posts: 94
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Blocked off coolant port above serial number?
Just took of the head to replace the head gasket. When i got the head off i noticed a “pile” off gunk setting on the head gasket just above the serial number. The head has a coolant port in that location but the gasket and the block does not and it is visible in the block that the port was once there. Does anybody know the reason for this?
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12-04-2020, 08:51 AM | #2 |
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Join Date: May 2010
Location: Long Island, NY
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Re: Blocked off coolant port above serial number?
A photo is necessary to give you some good feedback.
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12-04-2020, 09:15 AM | #3 |
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Join Date: May 2010
Location: albany
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Re: Blocked off coolant port above serial number?
There is no water passage in the block there
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12-04-2020, 11:15 AM | #4 |
Junior Member
Join Date: May 2010
Posts: 6
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Re: Blocked off coolant port above serial number?
If it is the one I am thinking of ....
Actually there is a large oblong passage way between the head and the block which was added in October of 28 or 29 for additional cooling. Last edited by TwoDeuceCoupe; 12-04-2020 at 01:19 PM. |
12-04-2020, 11:33 AM | #5 |
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Join Date: Apr 2018
Location: Mebane NC
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Re: Blocked off coolant port above serial number?
I've attached a photo of a head with the hole you're talking about circled. It's true that there's no corresponding hole in the gasket or the block there, and gunk does tend to accumulate. I don't know why this hole is in the heads, but it's in all of them, even aftermarket HC heads.
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12-04-2020, 11:45 AM | #6 |
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Join Date: Apr 2018
Location: Mebane NC
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Re: Blocked off coolant port above serial number?
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12-04-2020, 12:36 PM | #7 |
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Join Date: Jun 2013
Location: Western Springs, IL
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Re: Blocked off coolant port above serial number?
It perhaps has something to do with the casting process. Just a guestimate on my part.
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12-04-2020, 12:36 PM | #8 |
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Join Date: Jul 2010
Location: Pennsylvania
Posts: 1,100
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Re: Blocked off coolant port above serial number?
I suspect that hole is there to aid in the removal of the casting core material.
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12-04-2020, 04:47 PM | #9 |
Member
Join Date: Nov 2020
Location: Upstate NY
Posts: 94
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Re: Blocked off coolant port above serial number?
The hole circled is the hole i was referring. I tried to upload a picture with original post but it didnt work. Thanks for the thoughts! Wasnt sure if i had a mismatch of some sort.
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