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Author Topic: Block cooling holes  (Read 4658 times)

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Offline SuperSix

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Block cooling holes
« on: August 08 2011, 09:30:15 PM »
I noticed these holes were almost 100% blocked by the head gasket - aren't these coolant passages?

I had already poked out the top two when I took this pic.
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Offline Just a Six?

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Re: Block cooling holes
« Reply #1 on: August 11 2011, 11:55:07 AM »
I always thought they were were coolant-steam holes? I made sure on my RJC gaskets not to fill them full of the roll on goop.
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David
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Offline Pyro6

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Re: Block cooling holes
« Reply #2 on: August 11 2011, 05:27:31 PM »
On my GM gaskets they are only 1/4". I think the main coolant in/out is at the end of the heads. I'd show the pics of mine torn apart but still haven't figured that out. How do you change the file size???
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Offline SuperSix

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Re: Block cooling holes
« Reply #3 on: August 11 2011, 05:39:05 PM »
You can resize pics by percentage or pixel size in MS Paint. Are you running WIndows 7?
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'20 Kubota BX2380. FEL, 60" deck
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Offline Pyro6

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Re: Block cooling holes
« Reply #4 on: August 11 2011, 05:47:47 PM »
No, Vista
« Last Edit: August 11 2011, 06:12:47 PM by Pyro6 »
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Offline SuperSix

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Re: Block cooling holes
« Reply #5 on: August 11 2011, 06:25:57 PM »
Quote from: Pyro6 on August 11 2011, 05:47:47 PM
No, Vista

Not sure if that version of MSPaint will resize the pics - you can try.
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'87 GN, 60lb, TA49, THDP, FTP cam, T+ lots o' shit - SOLD
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Offline Pyro6

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Re: Block cooling holes
« Reply #6 on: August 11 2011, 07:17:35 PM »
Been trying to send pics. I'll keep working on it til I figure it out. If you Facebook, I put a gasket pic to start an album. Search Gary Schatz
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Offline Pyro6

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Re: Block cooling holes
« Reply #7 on: August 11 2011, 07:24:53 PM »
Coolant passages
« Last Edit: August 11 2011, 07:30:20 PM by Pyro6 »
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Offline Just a Six?

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Re: Block cooling holes
« Reply #8 on: August 12 2011, 08:48:28 AM »
Being so small makes me think they are steam holes. The end ones are the main water flow & these would be mostly for steam I think?
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David
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Offline Charlief1

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Re: Block cooling holes
« Reply #9 on: August 12 2011, 09:42:05 PM »
Partially right David. It has to have a way to get air out of the engine in areas higher than the rear cooling passages. That's why the holes are so small. No major flow in that area but it has to purge air out some where.
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Offline TexasT

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Re: Block cooling holes
« Reply #10 on: September 05 2011, 11:40:59 AM »
Quote from: Pyro6 on August 11 2011, 07:24:53 PM
Coolant passages














 Yours kinda looks like mine. Little holes from the factory that went 117k.
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Offline SuperSix

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Re: Block cooling holes
« Reply #11 on: September 05 2011, 01:56:43 PM »
Well, that's a well-blown gasket. :D
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'87 GN, 60lb, TA49, THDP, FTP cam, T+ lots o' shit - SOLD
'07 Ford F150 Lariat 2WD, 5.4L 3v - 255k
'20 Kubota BX2380. FEL, 60" deck
'78 IH/Case 184 Lo-Boy
'99 Kawasaki Bayou 400 4x4
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