head gasket issue

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steves49
Posts: 20
Joined: Sat May 29, 2021 6:03 pm
Zip Code: 33952

head gasket issue

Postby steves49 » Sun Sep 05, 2021 9:11 pm

ok i've now put on my 2nd head gasket, both have leaked ever so slightly. 1st with copper spray 2nd with nothing. both times 20 lbs at a time up to 60 lbs, i put straight edge on both head and block deck, looked perfect. any suggestions ? Thanks!

Crimson Tim
5+ Years
5+ Years
Posts: 572
Joined: Wed Feb 19, 2014 1:09 pm
Zip Code: 32736
Tractors Owned: The crew:
"John", 1952 Cub
"Paul", 1951 Cub
"George", 1958 LoBoy Cub with Wagner 45 Loader
"Ringo", 1977 Cub

So far, Paul and Ringo have arrived. John and George were supposed to follow ages ago, but apparently have gone awol. Long story.
Circle of Safety: Y

Re: head gasket issue

Postby Crimson Tim » Mon Sep 06, 2021 12:32 am

Are you using non-hardening sealer in the head bolts? They go into the water jacket and will leak otherwise.

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Glen
10+ Years
10+ Years
Posts: 5352
Joined: Mon Mar 19, 2012 7:33 pm
Zip Code: 00000
Tractors Owned: 1956 Farmall Cub with Fast Hitch, F-11 plow, Disc, Cultivator, Cub-22 mower
Circle of Safety: Y
Location: Wa.

Re: head gasket issue

Postby Glen » Mon Sep 06, 2021 1:27 am

Hi,
The Copper Spray should be put on both sides of the head gasket just as you are going to put the head on, the spray should be wet as you put the head on, then gradually torque the bolts to 45 ft lbs.
Follow the torque sequence in the Cub shop manual.

60 ft lbs is too much, you might break one or more bolts.

The head bolts go into the water jacket in the block. The head bolts need non hardening sealer put on the bottom 1/2" of the threads before putting them in the engine. I don't know if you did that.
Without sealer, coolant can run up the bolt threads, and leak out the head gasket.

Below is a post I wrote on showing the sealers you can use. :)

viewtopic.php?f=1&t=102173&p=807849#p807849

inairam
5+ Years
5+ Years
Posts: 2255
Joined: Wed Jul 08, 2015 10:24 am
Zip Code: 19342
Tractors Owned: 1948 6v - Dozer
1949 with kub klipper belly mower. mag 6v - Mom
1950 with plow, 54 blade, mott mag 6v - Roxanne
1953 54 blade, c22, wood 42 6v
1957 6v - barn Queen
1965 lo-boy with c-3 mower 12 v - Loboy
1974 Horse II 12 v c-2
1975 with woods 42-6 12 v - Horse
1979 long strip 12 v stuck engine
130 with international 1000 loader 6 v
1969 140 with bush hog tow behind mower 12 v
Terramite T-6 4WD Backhoe Perkins diesel
Memberships: Rough and Tumble Engineers Historical Association;Chapter 8 IH Collectors; IH Collectors Worldwide
Circle of Safety: Y
Location: Glen Mills PA

Re: head gasket issue

Postby inairam » Mon Sep 06, 2021 7:29 am

[quote="steves49" i put a straight edge on both head and block deck, looked perfect. any suggestions? Thanks![/quote]

You may want to take the head to an engine machine shop and have it checked and milled if needed. It may not be as flat as you think. I used this site to find some engine builders in my area https://www.aera.org/member-locator.html

as others have said some nonhardening thread sealant like a Permatex Thread Sealant with PTFE
When you only have 9 horsepower you need to know the names of all of the ponies!

steves49
Posts: 20
Joined: Sat May 29, 2021 6:03 pm
Zip Code: 33952

Re: head gasket issue

Postby steves49 » Mon Sep 06, 2021 6:12 pm

after 48 hours the leak (and it was only couple drops seeping out) stopped, I am going to give it rest of week and fire her up this coming weekend. Thanks for all the suggestions

NJ Farmer
10+ Years
10+ Years
Posts: 217
Joined: Fri Feb 04, 2005 7:20 pm
Zip Code: 08876
Tractors Owned: 1953 F-Cub
1956 Lo-Boy
1971 Cub Cadet 149

Re: head gasket issue

Postby NJ Farmer » Mon Sep 06, 2021 9:02 pm

Definitely follow the correct bolt torque sequence exactly if not you can/will crack the engine block…. Always important to follow the service manual and torque specs precisely. Words to live by!

NJ Farmer

Crimson Tim
5+ Years
5+ Years
Posts: 572
Joined: Wed Feb 19, 2014 1:09 pm
Zip Code: 32736
Tractors Owned: The crew:
"John", 1952 Cub
"Paul", 1951 Cub
"George", 1958 LoBoy Cub with Wagner 45 Loader
"Ringo", 1977 Cub

So far, Paul and Ringo have arrived. John and George were supposed to follow ages ago, but apparently have gone awol. Long story.
Circle of Safety: Y

Re: head gasket issue

Postby Crimson Tim » Tue Sep 07, 2021 1:29 am

And re-torque the bolts after a certain run-in period. Check the service manual for what that interval should be unless someone chimes in here first.


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