Wd45 heads
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=119259
Printed Date: 15 Nov 2024 at 8:31pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Wd45 heads
Posted By: what66
Subject: Wd45 heads
Date Posted: 20 Feb 2016 at 7:12pm
|
Hello guy I have a question did the wd45's have different head options? I got a head off Ebay it said it was from a wd45 but it's different than the one on mine. It's shorter I think it's from a Wd can I use a Wd head on a Wd45? I do have the rocker arms that go with it any help would be great thanks. Some one put valve seats in my head and didn't do it right the valves stick out past the head. #3 piston has a spot where it hit the valve but the damage in min. |
Replies:
Posted By: AaronSEIA
Date Posted: 20 Feb 2016 at 7:16pm
|
Most WD's used the short head. The last year or so of WD production switched to the tall head. If you have rocker stands, head studs, and a valve cover to work with the short head, it'd be ok to use. AaronSEIA |
Posted By: Don(MO)
Date Posted: 20 Feb 2016 at 7:46pm
You say the valve seats are in wrong and the valves are sticking out past the head, do they look like this head? If they do then you are OK using your head.  . ------------- 3 WD45's with power steering,G,D15 fork lift,D19, W-Speed Patrol, "A" Gleaner with a 330 corn head,"66" combine,roto-baler, and lots of Snap Coupler implements to make them work for their keep. |
what66 wrote:Posted By: Bill_MN
Date Posted: 20 Feb 2016 at 8:17pm
here's another angle to supplement Don's pic, the valve heads are not recessed in head. The mark on your piston is another story. ------------- 1951 WD #78283, 1918 Case 28x50 Thresher #76738, Case Centennial B 2x16 Plow |
Posted By: Don(MO)
Date Posted: 20 Feb 2016 at 8:25pm
If you installed new pistons, do you have the part number or a pic of the pistons installed in the block you can post so we can see how high they come, I am asking all of this because I'm thinking you might have installed WD pistons and not WD45. ------------- 3 WD45's with power steering,G,D15 fork lift,D19, W-Speed Patrol, "A" Gleaner with a 330 corn head,"66" combine,roto-baler, and lots of Snap Coupler implements to make them work for their keep. |
Posted By: what66
Date Posted: 20 Feb 2016 at 8:32pm
|
Thanks for the help guys I haven't replaced the pistons. They are power crater pistons so they are right. The reason I think the valves are wrong is because the intake valves are flush but the exhaust valve's stick out . And they pinned the new seats in really badly they even marked one of the seats with a punch. |
Posted By: Don(MO)
Date Posted: 20 Feb 2016 at 8:47pm
Bill it's good to know I'm not the last guy out there that still laps valves in. lol ------------- 3 WD45's with power steering,G,D15 fork lift,D19, W-Speed Patrol, "A" Gleaner with a 330 corn head,"66" combine,roto-baler, and lots of Snap Coupler implements to make them work for their keep. |
Posted By: what66
Date Posted: 20 Feb 2016 at 8:50pm
Here's the piston damage.  Here's the head see the 2 punch marks. I'm planing to rebuild this head in the mean time I want to use the other head. |
Posted By: Bill_MN
Date Posted: 20 Feb 2016 at 9:07pm
|
As dirty as that head is, I think you probably got a chunk of carbon behind the exhaust valve that held it open on an exhaust stroke and caused it to hit the piston. The impact probably knocked the carbon out and it kept on going without a problem. .....and Don, those guys who don't lap valves just don't know what they're missing do they? As far as I'm concerned getting a nice smooth seating valve is one of the simple joys in life! LOL ------------- 1951 WD #78283, 1918 Case 28x50 Thresher #76738, Case Centennial B 2x16 Plow |
Posted By: what66
Date Posted: 20 Feb 2016 at 9:14pm
|
By the way the head is not dirty anymore. And Don I did lap the valves on my other head. |
Posted By: MACK
Date Posted: 20 Feb 2016 at 11:02pm
|
I don't think a valve can hit a piston unless something else goes wrong. Unless the seats and valves are worn out, the valves should set out side of head. Center punch is a way to hold seats in. Not a problem. MACK
|
Posted By: Alex09(WI)
Date Posted: 21 Feb 2016 at 6:35pm
|
I don't think the valve can hit the piston unless the rocker arm clearance is too tight. By the look of the valve indentation on the piston, double check that the valve head is not bent, unless you installed new valves. On a side note, those are not WD45 pistons, they are D17 or newer, so you have a little more power anyway. I have d17 pistons in my wd45 and they look exactly the same. Good luck with your engine.
------------- www.awtractor.com A&W TRACTOR 920-598-1287 KEEPING ALLIS-CHALMERS IN THE FIELDS THROUGH THE 21ST CENTURY |
Posted By: what66
Date Posted: 22 Feb 2016 at 7:54am
|
I have no history on this motor at all. It ran ok with a slight miss but it was burning oil like crazy. |