This site uses cookies to maintain login information on FarmallCub.Com. Click the X in the banner upper right corner to close this notice. For more information on our privacy policy, visit this link: Privacy Policy
NEW REGISTERED MEMBERS: Be sure to check your SPAM/JUNK folders for the activation email.
cylinder head help
Forum rules
Notice: For sale and wanted posts are not allowed in this forum. Please use our free classifieds or one of our site sponsors for your tractor and parts needs.
Notice: For sale and wanted posts are not allowed in this forum. Please use our free classifieds or one of our site sponsors for your tractor and parts needs.
-
- 10+ Years
- Posts: 14
- Joined: Sun Feb 02, 2003 11:39 pm
- Zip Code: 14004
- Tractors Owned: 1955 Cub
1961 Cub
JD 790 - Location: NY, Alden
cylinder head help
I just put a resurfaced head on my cub with a new gasket and torqued the bolts in the right sequence, but notice air bubbles coming from the gasket( from antifreeze I spilled). Now the tractor stalls under a load or if I throttle it too fast (loosing compression?). I first tightened up to 45 ft lbs, then went up to 50 ft lbs to see if that would stop it. Any suggestions to my next step?
Thanks
Roy
Thanks
Roy
-
- Team Cub Mentor
- Posts: 24144
- Joined: Sun Feb 02, 2003 12:50 pm
- Zip Code: 43113
- Circle of Safety: Y
- Location: OH, Circleville
Did you torque the head in gradual steps or did you go straight to 45? I'd run it for 20-30 minutes and re-torque to spec. Then re- check after a couple or so hours of run time.
Bigdog
If you can't fix it with a hammer, you've got an electrical problem.
My wife says I don't listen to her. - - - - - - - - Or something like that!
http://www.cubtug.com
If you can't fix it with a hammer, you've got an electrical problem.
My wife says I don't listen to her. - - - - - - - - Or something like that!
http://www.cubtug.com
-
- Cub Pro
- Posts: 7013
- Joined: Sun Feb 02, 2003 9:36 pm
- Zip Code: 43420
- Circle of Safety: Y
- Location: OHIO, Fremont
Roy,
Bigdog is right on. I wouldn't try any more torque on the bolts...some of the bolt holes in the block are weak and can be easily damaged by over-torqueing. Was the deck on the block in good condition? Have you ruled out cracks in either the head or block?
Bigdog is right on. I wouldn't try any more torque on the bolts...some of the bolt holes in the block are weak and can be easily damaged by over-torqueing. Was the deck on the block in good condition? Have you ruled out cracks in either the head or block?
George Willer
http://gwill.net
The most affectionate creature in the world is a wet dog. Ambrose Bierce
http://gwill.net
The most affectionate creature in the world is a wet dog. Ambrose Bierce
-
- Cub Pro
- Posts: 23701
- Joined: Sun Feb 02, 2003 2:09 pm
- Zip Code: 63664
- Tractors Owned: 47, 48, 49 cub plus Wagner loader & other attachments. 41 Farmall H.
- Location: Mo, Potosi
-
- 10+ Years
- Posts: 14
- Joined: Sun Feb 02, 2003 11:39 pm
- Zip Code: 14004
- Tractors Owned: 1955 Cub
1961 Cub
JD 790 - Location: NY, Alden
-
- 10+ Years
- Posts: 14
- Joined: Sun Feb 02, 2003 11:39 pm
- Zip Code: 14004
- Tractors Owned: 1955 Cub
1961 Cub
JD 790 - Location: NY, Alden
George,
I had the head magnafluxed when I resurfaced it, and it was fine. As far as the block I'm not sure about a crack. I was blowing white smoke and the oil dipstick had a milky deposit on it. I was told that meant antifreeze was getting in, so I changed the head gasket. Also, when I changed the oil, a small amount of antifreeze came out of the oil filter drain. After replacing everything I don't have anymore white smoke.( only ran 15 minutes)
Roy
I had the head magnafluxed when I resurfaced it, and it was fine. As far as the block I'm not sure about a crack. I was blowing white smoke and the oil dipstick had a milky deposit on it. I was told that meant antifreeze was getting in, so I changed the head gasket. Also, when I changed the oil, a small amount of antifreeze came out of the oil filter drain. After replacing everything I don't have anymore white smoke.( only ran 15 minutes)
Roy
-
- 10+ Years
- Posts: 14
- Joined: Sun Feb 02, 2003 11:39 pm
- Zip Code: 14004
- Tractors Owned: 1955 Cub
1961 Cub
JD 790 - Location: NY, Alden
-
- 10+ Years
- Posts: 14
- Joined: Sun Feb 02, 2003 11:39 pm
- Zip Code: 14004
- Tractors Owned: 1955 Cub
1961 Cub
JD 790 - Location: NY, Alden
-
- 10+ Years
- Posts: 30
- Joined: Tue Feb 04, 2003 4:44 pm
- Location: Corsicana, Texas
-
- Cub Pro
- Posts: 23701
- Joined: Sun Feb 02, 2003 2:09 pm
- Zip Code: 63664
- Tractors Owned: 47, 48, 49 cub plus Wagner loader & other attachments. 41 Farmall H.
- Location: Mo, Potosi
-
- 10+ Years
- Posts: 14
- Joined: Sun Feb 02, 2003 11:39 pm
- Zip Code: 14004
- Tractors Owned: 1955 Cub
1961 Cub
JD 790 - Location: NY, Alden
Well I ran my cub a little longer today and it is definitely leaking small bubbles of antifreeze around the gasket. It also blew some white smoke again. I guess I'll take it apart again and make sure the engine surface is OK and try sealer.
Will the gasket be OK to reuse, or should I get another?
Roy
Will the gasket be OK to reuse, or should I get another?
Roy
-
- Team Cub
- Posts: 17288
- Joined: Sun Feb 02, 2003 2:59 pm
- Zip Code: 55319
- Circle of Safety: Y
- Location: MN
I have never felt very comfortable reusing a head gasket, but I have known of quite a few people doing it and it working OK. One question though, if you add sealer to a used gasket and it still leaks, what do you do next? Do you have another problem to chase down or do you then try sealer on a new gasket?
I would suggest that if you want to reuse the gasket, remove the head by reversing the normal head tightening sequence. Just crack each bolt a little, then repeat the pattern going maybe a 1/4 turn at a time until the bolts are all loose. Otherwise, you will probably deform the gasket when you loosen the head bolts.
I would suggest that if you want to reuse the gasket, remove the head by reversing the normal head tightening sequence. Just crack each bolt a little, then repeat the pattern going maybe a 1/4 turn at a time until the bolts are all loose. Otherwise, you will probably deform the gasket when you loosen the head bolts.
-
- 10+ Years
- Posts: 14
- Joined: Sun Feb 02, 2003 11:39 pm
- Zip Code: 14004
- Tractors Owned: 1955 Cub
1961 Cub
JD 790 - Location: NY, Alden
-
- 10+ Years
- Posts: 114
- Joined: Tue Aug 26, 2003 3:37 pm
- Location: Central Indiana USA
I’ll try to not start a war here… We have hashed over this a number of times on the ATIS tractor list over the years. Everybody has their own ways of doing things and that is as it should be. But… It is as simple as this… in my shop ALMOST NOTHING goes together dry. I have not done thousands and thousands of jobs but I have turned wrenches for $$$ in the past and still do now and then but I’m just a lot slower now. I have “never†had a head gasket fail that I installed. Never. I have also never put a head gasket on dry and have no plans to ever do so. I firmly believe that having something on there is generally more important than what is used. I do not like products that are like permanent glues like the old original Permatex products were. I am kind of partial to the copper-cote type of products but have used many other things including from Hi-tack type products all the way to a simple brushing with grease. I think it is important for the mating surfaces to slide against each other. As you tighten a head down for example that gasket has to move around a tiny bit as it is compressed. I believe that almost anything that provides a bit of lubrication to help it shift into place will help it form into the proper shape. You have to think like a molecule.
I never put bolts together dry, especially head bolts. I clean each bolt on a wire wheel and make sure the holes are clean. I dip the bolt in oil just before I put it in the hole and I want the bottom of the bolt head and the top of the cylinder head where the bolt head seats both lubed. When I torque a head down I do it in at least about 5 steps. On something like a #$%& CUB the first pass might only be 5 # of torque but always in the pattern. I wouldn’t dream of going to 45 # on the second or even third pass. Re-torquing after running enough to warm the engine up is just automatic.
I like to use a huge fine cut flat file to lightly draw-file both the head and the top of the block. Not to remove material but to be sure there are no unseen burrs or bumps that a visual inspection might miss.
Of course we are talking old tractors here. I realize that a lot of new cars and trucks call for a lot of special techniques and they should be observed in those applications.
I never put bolts together dry, especially head bolts. I clean each bolt on a wire wheel and make sure the holes are clean. I dip the bolt in oil just before I put it in the hole and I want the bottom of the bolt head and the top of the cylinder head where the bolt head seats both lubed. When I torque a head down I do it in at least about 5 steps. On something like a #$%& CUB the first pass might only be 5 # of torque but always in the pattern. I wouldn’t dream of going to 45 # on the second or even third pass. Re-torquing after running enough to warm the engine up is just automatic.
I like to use a huge fine cut flat file to lightly draw-file both the head and the top of the block. Not to remove material but to be sure there are no unseen burrs or bumps that a visual inspection might miss.
Of course we are talking old tractors here. I realize that a lot of new cars and trucks call for a lot of special techniques and they should be observed in those applications.
"farmer"
Location: TMCOTKU (Shelbyville, IN.) Cubfest 2004
1947 CUB named "Major"
5 other red ones
JD-A
MM-R
AC-C
MF-165D-HA)
2 Case VACs
MH-Pony
2 Ford 8Ns
Ferguson TO-20
Everything needs something, some need almost everything.
Location: TMCOTKU (Shelbyville, IN.) Cubfest 2004
1947 CUB named "Major"
5 other red ones
JD-A
MM-R
AC-C
MF-165D-HA)
2 Case VACs
MH-Pony
2 Ford 8Ns
Ferguson TO-20
Everything needs something, some need almost everything.
-
- Team Cub
- Posts: 17288
- Joined: Sun Feb 02, 2003 2:59 pm
- Zip Code: 55319
- Circle of Safety: Y
- Location: MN
-
- Similar Topics
- Replies
- Views
- Last post
-
- 15
- 720
-
by tgrist
Sun Jan 28, 2024 9:41 am
-
-
Replacing bottom gasket on touch control cylinder block Attachment(s)
by Gene Rogers » Mon Feb 07, 2022 11:35 am » in Farmall Cub - 5
- 343
-
by Ken (48 Cub)
Tue Feb 08, 2022 9:14 am
-
-
- 7
- 465
-
by Clemsonfor
Mon Sep 13, 2021 4:57 pm
-
- 2
- 432
-
by inairam
Fri Jan 12, 2024 10:59 am
-
- 4
- 263
-
by pett3227b
Wed Nov 01, 2023 12:36 pm
Who is online
Users browsing this forum: No registered users and 4 guests