1641 blowing engine oil

[Cannon51]

It had upper 800's when I got it but the hour meter was not working, so who knows. I was looking through the vanguard parts manual and looks like the oil pump and pickup are on that end. Maybe just an oil pump or pickup tube. I'll pull the engine and take it apart at some point, maybe fall. I can't figure what I changed installing the tube to make the stick get into something. They say it's good for old people to keep learning new things, here's my chance. I've had several Briggs 8-12.5 hp flat heads apart, maybe it won't be a lot different.
Cannon

[Sam Mac]

Well if you feel like taking a ride up my way I'll give you a hand with it.

[Cannon51]

Thanks, it may come to that. I would like to see all you Cubs.
Cannon

[Cannon51]

I hauled the 1641 to the garage this afternoon and pulled the engine out. I was going to wait till fall but what I have done wrong has been kanda gnawing at me. I have a vanguard manual and hope it won't take much to get to the oil pump.
Cannon

[Cannon51]

Looks like I took out the plastic gear on the oil pump. The big bearing on the crank stayed on the crank when I took the case apart, should it have been pressed in the cover/case. So far I know I need 2 exhaust gaskets, a case gasket, a plastic gear for the pump and a dipstick. there is a lot of plastic shrapnel so I probably need a new oil filter.
Cannon

[Sam Mac]

You still may have a blown head gasket after you get done with the oil pump gear and depending on how long you ran it with no oil pressure you may have other damage. Just my 2 cents but I think you need to decide do you rebuild what you have, replace it with a used engine or put a new engine. Here is a used Vanguard that is on C-list.
http://winstonsalem.craigslist.org/grd/5007723821.html

[Cannon51]

Originally Posted by Sam Mac

You still may have a blown head gasket after you get done with the oil pump gear and depending on how long you ran it with no oil pressure you may have other damage. Just my 2 cents but I think you need to decide do you rebuild what you have, replace it with a used engine or put a new engine. Here is a used Vanguard that is on C-list.
http://winstonsalem.craigslist.org/grd/5007723821.html

Noted, but all those options involve more than I want to spend right now. It was running ok before I messed up the pump gear and I ran it less than 30 seconds after the dipstick went down the well. The vanguard parts list I have doesn't show the pump gear separate from the pump and says the pre 07 pump is NLA. What about the bearing, should it be pressed in the case? I'm not planning on using the 1641 this year anyway and after pulling this engine twice already it's no big deal to take it out again. If need be I might get a used pump off ebay. I hope everyone doesn't find my half-fast ways to offensive.
Cannon

[Sam Mac]

PM me your e-mail address and I'll try to e-mail you the service manual. Looks like the bearing should have stayed in the cover.

[Cannon51]

I think you sent it to me when I was replacing the flywheel side seal last year, but I do have it. Anyway I'm glad I took it apart, at least now I know what happened.
Cannon

[J-Mech]

Get a new oil pump. You say the the early one is NLA, I'd be willing to bet it's just an updated design and the new one will work in it's place. Just a guess on my part, but an educated one.