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Wes(Va) 
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Joined: 08 Apr 2024
Location: Elkton, Va
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 Topic: D-14 oil filter/ block ?
Posted: 01 Feb 2026 at 10:05pm |
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Have had this engine apart for some time. Original tractor had a hole in the side of the block from a rod coming loose. Found a donor D-14, and pulled its engine apart and found good used sleeves and pistons to put in. Im stumped on the oiling system.. the block has two ports on the right hand side like for the full flow system, but I have a bypass filter base. Its been apart for a while and I cant remember 100% but am pretty sure this filter was on this engine. Would it have had a plug in the lower hole and run the bypass filter? Should I find a bypass filter setup? There is a plunger in the front of the cam
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DrAllis
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Joined: 12 Sep 2009
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Posted: 01 Feb 2026 at 10:47pm |
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I'd have to research this to give you an accurate answer. Going from memory, the early G-149's were bypass filters. The later G-149's and all G-160's are full flow filter design. The oil pumps were different. Camshaft was the same but I think the ball/spring and thrust device was different at the front of the cam.....The full flow block has different oil flow passages. Too late in the day. This has to be done right or bad things will happen. What's the s/n on the left side behind the carb ?? G-149 or G-160 ??
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Wes(Va)
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Posted: 02 Feb 2026 at 11:51am |
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Its a full flow block. Checked the serial nuber pad and its blank, so possibly a replacement block at some point? This oil pump doesn't have a check ball in the driveshaft. Has 3.5" crater pistons in it. I think I may have a full flow filter base that I thought was off of the original D17 around here, and maybe it came off this engine! Man its been 10+ years since I took this apart!
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Kenny L.
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Posted: 02 Feb 2026 at 8:50pm |
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The good Dr. is right.
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Wes(Va)
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Posted: 19 hours 16 minutes ago at 1:56pm |
OK! so, don't think its a full flow block. Didn't know the difference was the hole or no hole behind the oil filter base. This block has a hole behind the filter housing, but also has two ports down on the right hand side (which is why I called it a full flow block) I have a relief valve in the front end of the camshaft. I believe I am going to plug the lower hole and run it. 
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Allis dave
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Posted: 16 hours 46 minutes ago at 4:26pm |
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Just make sure you blow some air or something through those holes to make sure you know where the paths are going and where you have oil. Dr helped me convert my WD45 to full flow about 10 years ago. It was a fun project.
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PaulB
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Location: Rocky Ridge Md
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Posted: 13 hours 59 minutes ago at 7:13pm |
 Wes(Va) wrote:
OK! so, don't think its a full flow block. Didn't know the difference was the hole or no hole behind the oil filter base. This block has a hole behind the filter housing, but also has two ports down on the right hand side (which is why I called it a full flow block) I have a relief valve in the front end of the camshaft. I believe I am going to plug the lower hole and run it. |
Your block is a FULL FLOW FILTER block. Running it at a BYPASS system: DO YOU FELL LUCKY???
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If it was fun to pull in LOW gear, I could have a John Deere.
Real pullers don't have speed limits.
If you can't make it GO... make it SHINY
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DrAllis
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Posted: 11 hours 16 minutes ago at 9:56pm |
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I think that would work, but I'm not there looking at the block either. As long as you use a bypass oil pump and filter base, and there is a path for oil to enter the block from the filter base, plugging that lower hole should be correct. Again, I ain't there looking at it.
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