D15 Serries 2 engine rebuild

Well I had no idea how long it has been since I check in here.
My D15 160 gas engine seized the main thrust bearing. I am really not sure just why it doesn't have a ton of hours on it since it was rebuilt. But last time it was rebuilt it didn't get a full overhaul kit my brother just replace what he felt it needed and replaced the bearings. It also has a new head.
Anyway I got it all appart and ordered an out of frame rebuilt kit plus a new crank the old one was damaged and already turned down the max last time.
I ordered an oil pump rebuild kit and the oil pressure and thrust springs along with the check ball and other parts under the cover at the front of the cam. My only thought at this point is that I had an oil flow problem. I ordered all the parts from Jensales, Inc. They served me well with the rebuilt kit for my gas 226 in my D17 a few years back. But here is the catch they sent me one of the two springs I ordered for the front of the cam and it is the same oil pressues spring that is in the pump rebuild kit. It is smaller and cone shaped not at all like the old spring that was in the motor. I have a photo of the old parts sitting on top of the bag with the new spring in it. The new spring is all the way to the right in the photo. Which spring is correct?


Edited by Dan73 - 26 Jun 2019 at 1:58pm

Ok i have run into a bit of an issue with the engine kit.  The pistions and sleeves don't match my motor.  

Edited by Dan73 - 26 Jun 2019 at 8:43pm

3.500 bore is G149, you don't have a series 2 G160

Somebody here might know what the casting numbers mean but I don't. 3.5 bore is G149, that I do know, also I know that a G160 will be stamped(not cast) so on a flat area that is more or less behind the carburetor, at least my series 2 D15 is.

Edited by Butch(OH) - 26 Jun 2019 at 8:55pm

Pictures are worth 1000 words at times, I can't explain what you are seeing on the block when I can't see it. However this you can take to the bank. G149 sleeves won't fit in a G160 and 160 sleeves dont fit in a 149. The sleeves you removed are the G149 3.5" bore, thus you do NOT have a G160 period OK? Maybe some crook stamped the block when he cobbed it into a series 2 tractor long before you owned it ? Would not be the first tine such shenanigans have been pulled.

There are G-149's with the old bypass oiling system (D10-12-14's) and there are G-149's with the full-flow oiling system that use a PH-8A filter as used in ANY D-15 tractor.

I just did a little research on engine serial numbers from tractors actually tested at NEBRASKA TEST.    The series 2 D-15 gas engine was s/n 160-1056-R (this was a G-160 engine full-flow oiling)...……..Series 1 D-15 gas was 15-3032-R (this was a G-149 engine with full-flow oil)…….D-14 gas engine s/n 149-1481-B (this was a G-149 old oil filtering system)…...D-14 LPG eng s/n was 149-1033-T............D-12 S3 engine s/n was 12-1001-R  (again a G-149 with old oil filtering)… D-10 S3 engine 12-1002-R.