head gasket ?

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coppersmythe
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head gasket ?

Postby coppersmythe » Mon Feb 24, 2020 3:31 am

good morning all from the deep south . cant seem to sleep tonight so , quick question with an answer i probably will not like . '48 has been a little finicky about starting and running . water droplets are coming out of the exhaust pipe when it does run , and when she "stumbles" or slight surge in RPM's , bubbles come up out of the filler neck on the radiator . No freeze issues , cooling system drained when stored . coppersmythe.......................

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Stanton
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Re: head gasket ?

Postby Stanton » Mon Feb 24, 2020 7:45 am

Being that you're in the deep south, I might say condensation in your fuel/exhaust system, but the bubbles seen might indicate otherwise.

Are you getting any signs of water/coolant in your oil?
Stanton
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Rick Spivey
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Re: head gasket ?

Postby Rick Spivey » Mon Feb 24, 2020 7:49 am

Sure sounds like a head gasket issue.Sometimes they do just wear out, generally in the small areas between cylinders and coolant passages. You could check it with a pressure tester available for loan from many auto parts stores, but then you'll be filling a cylinder with more water....so be wary of "hydro lock" if cranking.
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Gary S.
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Re: head gasket ?

Postby Gary S. » Mon Feb 24, 2020 2:07 pm

Just went through this with the 8N. White smoke out the exhaust like you would not believe,antifreeze filling the oil filter canister. Jumped on some forums that are no where near what this one is and got really worried expecting the worse. Decided to go for broke and change the gasket,didn't really see any problems on it's removal. But that solved it- could not be happier

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Re: head gasket ?

Postby tst » Mon Feb 24, 2020 3:13 pm

if you do the head gasket remember to seal the head bolts and copper spray for that, seen many changed without doing that and had bigger leaks

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lowgearfarm
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Re: head gasket ?

Postby lowgearfarm » Mon Feb 24, 2020 3:25 pm

I hope, for your sake, that your head problem doesn't come to this, but...
I replaced a head gasket 3 or 4 times [OK. Not Fcub. A Ford industrial engine] before taking the head to a machine shop to mill the mating surface. Only then did we discover the small crack in the head. Fortunately I had an old head on the shelf. Didn't bother to mill the replacement head. Just bolted it on. Problem resolved. May the gods of chance be with you.

Stevetractor
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Re: head gasket ?

Postby Stevetractor » Mon Feb 24, 2020 8:50 pm

I’ve always felt it was good practice to plane the head when replacing head gasket. It’s really not that expensive, just have to go to the pain of taking to the machine shop.

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Re: head gasket ?

Postby staninlowerAL » Tue Feb 25, 2020 7:32 am

coppersmythe wrote:............ cant seem to sleep tonight so , quick question with an answer i probably will not like..........coppersmythe.......................
Val, if you find an answer to this problem, please let all us seniors (and others) know. I'm reassured to hear someone else is blessed with this "illness"!!! :roll: Stan

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ctltmp
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Re: head gasket ?

Postby ctltmp » Tue Feb 25, 2020 9:21 am

tst wrote:if you do the head gasket remember to seal the head bolts and copper spray for that, seen many changed without doing that and had bigger leaks


Been wanting to offer my 2 cents, but there are a lot of guys on here with way more experience than me. I would be inclined to believe sounds like head gasket. I think the reward is worth the risk of doing the compression test. That will tell the tale for sure.

As stated, be sure to use sealant on the bolts, thats key. I have also been using the copper spray on the head gasket itself as suggest in other posts. I'm sold on it since I've tried it. The job isn't that bad, just be careful not to bust off a head bolt. I replaced all mine when I had it apart. Head bolts tend to stretch over time. Just be sure you use the appropriate grade bolt if replacing.

I'd be interested he hear what the compression test shows if you do it.
WV Mike

tst
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Re: head gasket ?

Postby tst » Tue Feb 25, 2020 10:02 am

if you do remove the head run the engine 1st and get it hot, then tap on the head bolts with a hammer , this all helps with the tapping and heat expansion to get the head bolts out with out breaking, using an impact wrench in quick bursts helps also

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John *.?-!.* cub owner
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Re: head gasket ?

Postby John *.?-!.* cub owner » Tue Feb 25, 2020 5:21 pm

Have you done a compression test on the cylinders yet? Do one cold and hot. As others have said, use Copper Coat spray on both sides of the head gasket. I use to use it on head bolt threads, but since having a leak with one I have been using the TFE pipe thread paste.
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coppersmythe
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Location: louisiana

Re: head gasket ?

Postby coppersmythe » Tue Feb 25, 2020 6:55 pm

John *.?-!.* cub owner wrote:Have you done a compression test on the cylinders yet? Do one cold and hot. As others have said, use Copper Coat spray on both sides of the head gasket. I use to use it on head bolt threads, but since having a leak with one I have been using the TFE pipe thread paste.
I want to THANK EVERYONE for their suggestions . my biggest mistake ( for anyone in the same boat ) was jumping the gun . Pulled the head ( using all the tricks ) can you count the broken head bolts ? i wish i had done a compression test . But , moving forward , this is where i'm at .
20200225_115853.jpg
the above photo is not as bad as it looks , it has some "magic penetrate" on it .
20200225_114556.jpg
both the head and the block have chalk circles on them showing the location of plugged coolant channels. head , gasket , and block . all five were blocked . arrow shows one i "opened" . all five corresponding channels on the block where clogged . looked like carbon . Normal ? 72 year old head/ gasket/ bolts , guess i was "lucky" it was only 4 broken head bolts . ( head is cleaned ) :D coppersmythe.......................

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Glen
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Re: head gasket ?

Postby Glen » Tue Feb 25, 2020 7:57 pm

Hi,
Below are pics at TM Tractor of a used head. It only has the holes that are open in your pic.

The 3 places you have circled have no holes in the pics below.
The bottom 2 pics on the page show it, the bottom pic is the front of the head, you can see the air cleaner mounting surface on the right side of the pic. :)

http://www.tmtractor.com/tm-tractor/gen/cylhead_001.htm
Last edited by Glen on Tue Feb 25, 2020 11:40 pm, edited 2 times in total.

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John *.?-!.* cub owner
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Re: head gasket ?

Postby John *.?-!.* cub owner » Tue Feb 25, 2020 9:10 pm

I believe you will scrape the 2 center holes that are circled you will find that is actually the head, no holes there.
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coppersmythe
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Location: louisiana

Re: head gasket ?

Postby coppersmythe » Tue Feb 25, 2020 11:26 pm

thanks . the channel with the arrow was clogged with a hard black crusty something , i dug it out with a screwdriver , the one on the far end that is open was also clogged . the head gasket was also "clogged" in those spots . i'll take a closer look and pictures tomorrow , i didnt pick out the gasket holes . the TM head photo was very helpful , glad i didnt try to dig those spots :oops: . i'll report what i find . i expected it to be reddish rust but, it looks just like carbon build up . coppersmythe............................


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