1951 CA had middle 2 cylinders
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=197665
Printed Date: 25 Sep 2024 at 3:26am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: 1951 CA had middle 2 cylinders
Posted By: captaindana
Subject: 1951 CA had middle 2 cylinders
Date Posted: 11 Oct 2023 at 2:25pm
Low on compression last fall when I bought her. #2@65psi, #3@45psi. Front and back cylenders were around 115 and this tractor hadn’t run in years. Here’s what I found so far this morning.  Someone drilled between 2&3 and installed a plug. The head gasket has a hole right above plug. What should I do next please? Thanks. Dana ------------- Blue Skies and Tail Winds Dana |
Replies:
Posted By: captaindana
Date Posted: 11 Oct 2023 at 2:27pm
|
Oh and when I preformed the leak down compression check those two cylinders bubbled in the radiator. ------------- Blue Skies and Tail Winds Dana |
Posted By: steve(ill)
Date Posted: 11 Oct 2023 at 3:57pm
|
Normally your looking for a HAIR LINE crack that MIGHT catch your finger nail when you run across it.... a few thousands wide.. Thats about 10 TIMES that size.. I wonder if the crack was that big, or they pounded the plug in there and spread it...?? Most would say the block is toast...... About 15 years ago, Dick L had a post where he went thru the freeze plug on the side of the block and drilled thru the block on the opposite side, threaded it, installed a bolt all the way across and pulled it back to a hair line crack.. Left the bolt in permanently.... The gasket will seal a crack 5 thousandths wide.. not 1/16 - 1/8 of an inch. ------------- Like them all, but love the "B"s. |
Posted By: steve(ill)
Date Posted: 11 Oct 2023 at 4:08pm
I looked at Dicks site and dont see a photo of his work. I did find this block photo from Dick... I drew an arrow on the side where the freeze plug is located.. I seem to remember he took this plug out and went from there. ------------- Like them all, but love the "B"s. |
Posted By: mdm1
Date Posted: 11 Oct 2023 at 6:04pm
|
https://public.fotki.com/DickL/tie_bolt_story/tiebolt_pic_1.html#media" rel="nofollow - https://public.fotki.com/DickL/tie_bolt_story/tiebolt_pic_1.html#media I think this is what you are looking for. I remember that post also. Side note-what has happened to Dick L. ------------- Everything is impossible until someone does it! WD45-trip loader 1947 c w/woods belly mower, 1939 B, #3 sickle mower 1944 B, 2 1948 G's. Misc other equipment that my wife calls JUNK! |
Posted By: Tracy Martin TN
Date Posted: 11 Oct 2023 at 6:37pm
|
Heads gasket was leaking across fire rings.Make sure sleeves are protruding correctly. Probably just clean up block and head, new gasket should fix it. If you want you could put sealer in crack , let it cure before replacing head and gasket. JMHO, Tracy ------------- No greater gift than healthy grandkids! |
Posted By: steve(ill)
Date Posted: 11 Oct 2023 at 7:04pm
|
He has a water leak into the combustion chamber also... Antifreeze is coming up thru the crack ( or combustion is actually going down the crack into the water jacket. ------------- Like them all, but love the "B"s. |
Posted By: AC720Man
Date Posted: 11 Oct 2023 at 7:57pm
|
The plug doesn’t make sense to me why it was placed. I know of folks drilling a hole to stop a crack but that is an extremely big plug to do that if that’s why it was done. ------------- 1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD |
Posted By: AC720Man
Date Posted: 11 Oct 2023 at 8:01pm
|
Interesting repair. ------------- 1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD |
Posted By: Lon(MN)
Date Posted: 12 Oct 2023 at 6:30am
|
I have a nice block with no cracks. A great airport 40 miles from me in Saint Cloud Minnesota. ------------- http://lonsallischalmers.com |
Posted By: jaybmiller
Date Posted: 12 Oct 2023 at 6:38am
|
curious... but would removing both sleeves be on the 'todo list' ??? ------------- 3 D-14s,A-C forklift, B-112 Kubota BX23S lil' TOOT( The Other Orange Tractor) Never burn your bridges, unless you can walk on water |
Posted By: captaindana
Date Posted: 12 Oct 2023 at 9:13am
|
So what about dropping in a good running 139 or 149 CI engine? Would they fit no problem? Will my carb and air cleaner work on either engine? This CA is pretty much mint (except for the boat anchor engine) 😫newer radiator, gas tank from last winter, woods l306, rebuilt carb, etc. Thanks for any inputs! Dana ------------- Blue Skies and Tail Winds Dana |
Posted By: steve(ill)
Date Posted: 12 Oct 2023 at 9:54am
|
read Beckers post... down several in this link.. https://www.allischalmers.com/forum/138-ci-engine_topic139643.html" rel="nofollow - https://www.allischalmers.com/forum/138-ci-engine_topic139643.html ------------- Like them all, but love the "B"s. |
Posted By: Lon(MN)
Date Posted: 13 Oct 2023 at 2:20pm
|
I put a 138 in a CA. It was a direct bolt in. I had to build a bracket for the air cleaner and rig up a temp gouge. Holes in the hood all lined up. The 149 manifold will not line up with the holes in the hood. ------------- http://lonsallischalmers.com |
Posted By: Gary Burnett
Date Posted: 13 Oct 2023 at 2:35pm
|
For only the cost of a head gasket I'd spread JB Weld over the crack and between the cylinders and bolt the head down tight while the JB is still pliable.Let it set for 2 days before cranking. |