Time To Tear Down

Well I finished tearing down my engine. I will have to say that it has been a great learning experience.

As I have said, I chose to take this on because I wanted to be the first one to find the cause of the problem. Well, I found it. See pictures below.

First two just to show that the case is ready to split.


There it is. There is the culprit.

A shot of the wheels showing no visible damage.

That is one of the piston circlips.

Looks like it's been bent out of shape . . . hit something in there. And great that you took the time and effort to find it yourself.

Better put the shims back in the front door before the wife finds out you took them out for engine repairs!
So is it ready to get sent out for machine work now? I know you had been thinking of a different crank awhile back.

Yes it is about ready to be shipped. I just need to get the crate built. I was planning on a new crank as I was expecting the worse. Doesn't seem to be the case.

Not much left of the cir-clip,once it dug a nice groove in your jug what was left of it just dropped to the bottom of the case....Could you tell by looking at the piston if it was the piston groove for the clip that let go,or could you tell if the clip itself broke??

To me it looked like the clip was loose from not being seated right. If you go back and look at pictures posted of the piston itself, you can see that the clip landing is sort of oblonged as it was working itself out of the landing. Once the landing was large enough, the clip came off and got hung up in between the piston and cylinder wall. Again, if you go back and look at the pictures of the piston that I posted, you can see where the clip dug into the piston. Most of the damage of the cylinder came from the pin IMO.

I am not really sure, I think most of that clip is there. There May be some missing but not a lot.

Let's hope not.

Something went through my oil pump. That gerotor didn't crack on its own.

I had to put a new oil pump on my shovel shortly after the build - kept leaking, no matter what - and a bit tricky to install, as I remember.

The oil pump on the Spirtster is pretty straight forward. Mot difficult part will be routing the oil lines.