Head gasket intentionally blocked? Mystery!

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Catbird
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Head gasket intentionally blocked? Mystery!

Post by Catbird » Wed Oct 14, 2020 12:46 pm

I pulled the head on my 1926 engine. Noticed that the old head gasket blocks the water passage between the 2 and 3 cylinders.

Do I have the wrong gasket for my engine? See picture. I have a new HG, but still blocks the water. Should I make an opening so the water should go through?
Attachments
IMG_4758.jpeg
IMG_4761.jpeg


jiminbartow
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Re: Head gasket intentionally blocked? Mystery!

Post by jiminbartow » Wed Oct 14, 2020 1:05 pm

Does it fit better if you turn it upside down? Jim Patrick


Les Schubert
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Re: Head gasket intentionally blocked? Mystery!

Post by Les Schubert » Wed Oct 14, 2020 2:03 pm

Some of the holes in the deck were required for supporting the casting cores. The so called “frost plugs” are a classic example!!!

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Mark Gregush
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Re: Head gasket intentionally blocked? Mystery!

Post by Mark Gregush » Wed Oct 14, 2020 2:21 pm

jiminbartow wrote:
Wed Oct 14, 2020 1:05 pm
Does it fit better if you turn it upside down? Jim Patrick
That hole is on the center line of the block, so no matter which way the gasket is flipped would still cover hole. There is only one way to install the head gasket correct, the water passage holes at front and rear are different size. The holes in the gasket need to match in those locations with the folded over fire rings pointing up. (for the copper gaskets, the comp still needs to be installed with those holes in proper place, but fire rings are crimped on both sides) None of my copper head gaskets have a hole in that location.
I know the voices aren't real but damn they have some good ideas! :shock:

1921 Huckster
1925 Cut down pickup

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DanTreace
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Re: Head gasket intentionally blocked? Mystery!

Post by DanTreace » Wed Oct 14, 2020 2:34 pm

That round hole in the high cylinder head is just a casting feature, the low heads don't have that round hole, both DO have the oval hole for coolant to the block.. All Ford head gaskets will cover that hole, no worries. :P


Note this Ford high head on left and a modern Z head on right, they both have that round casting hole. But look close at the block these heads are resting on, only the large oval hole is in the block surface.......no round hole on the opposite side.
Attachments
zhead and iron (3).jpg
zhead and iron (3).jpg (112.54 KiB) Viewed 496 times
The best way is always the simplest. The attics of the world are cluttered up with complicated failures. Henry Ford
Don’t find fault, find a remedy; anybody can complain. Henry Ford


Kerry
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Re: Head gasket intentionally blocked? Mystery!

Post by Kerry » Wed Oct 14, 2020 5:57 pm

I'd say, can't check as I don't have any pre 15 blocks in at the moment, that the hole in the block may have been there in early ones? 1913 Parts book shows head gasket as having both water holes and also my stash of old gaskets has one with both holes.

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Mark Gregush
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Re: Head gasket intentionally blocked? Mystery!

Post by Mark Gregush » Wed Oct 14, 2020 6:30 pm

Doesn't the extra hole have to do with the water flowing the other direction down under? :lol:
I know the voices aren't real but damn they have some good ideas! :shock:

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DanTreace
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Re: Head gasket intentionally blocked? Mystery!

Post by DanTreace » Wed Oct 14, 2020 9:44 pm

An early block, no round hole on the surface, just the oval hole.

IMG_2044 (640x386).jpg
And here are the low head (upper one in photo) and high head, note the low head has no round hole, but the high head does have that mystery round hole! Think it may have to do with the casting of the high head, which has larger coolant capacity and that hole likely helped in the sand core pattern.

High head and low head.jpg
The best way is always the simplest. The attics of the world are cluttered up with complicated failures. Henry Ford
Don’t find fault, find a remedy; anybody can complain. Henry Ford


Kerry
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Re: Head gasket intentionally blocked? Mystery!

Post by Kerry » Wed Oct 14, 2020 10:46 pm

Dan, that low head looks like it has the gasket still on it, I have several low heads in stock and all have both holes.

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