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  #41  
Old 13th October 2019
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Maxeffort Maxeffort is offline
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I thought I saw RTV on the cylinder base gaskets too.

However, I’d think everyone would agree that RTV didn’t do that to the pump. That engine has been apart several times, had big-serts installed in the cases. Some metal trash went through through the pump. The gears are big enough so that damage isn’t going to stop the scavenge stage from pumping, just make it less efficient. To me it’s just part of other things going on.
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  #42  
Old 13th October 2019
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I agree with that.
Generally, a small amount of aluminum isn't going to break the bank as they will get chewed up by the bearings.
The pump being less efficient is a problem.
The housing has pieces missing and we still haven't seen the dirty little metal piece that did it.
It is floating around somewhere.
I am wondering if the jolt from the metal in the pump may have put enough stress on the drive gear to hurt it.
Then again, we don't know from which part the metal came.
Was it a bearing?, left overs from the big sert installation?
Too many unknowns...

This is an oil pump from XLF member, lostndallas.
This round broken off piece of drive gear was found inside the oil pump.
That means it fell into the cam chest floor, got pulled into the front port of the pump and got caught up under the scavenge gears.




edit:
Quote:
Originally Posted by Maxeffort View Post
I thought I saw RTV on the cylinder base gaskets too.
You are correct Sir.
I didn't look that far down. That engine needs to come apart to be cleaned and inspected.
That scrubbing almost sounds like a dry cylinder but it isn't consistent with full rotation.

To the op.
If you'll post pics of the teardown, we'll help diagnose as much as we can.
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Last edited by Hippysmack; 13th October 2019 at 05:43..
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  #43  
Old 20th October 2019
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Sorry for leaving you guys hanging. Life/work came up. Bike sits since I took the oil pump off. Inspected the roadkill gummy I found and it has threads in it. A lot like rag cutoffs I used to plug the holes the pushrods go into, so nothing drops in there. -_-

Yes that is rtv on the base gasket. I filled in the hole a bigsert pulled out of so I could put in another bigsert. I'm an amatuer welder at best. But I think I did the job. Threw in some rtv to seal the deal. That was only on the outside of the gasket.

Top end has been off too many times. There's a lot of frustration in that motor. I know how to follow torque procedures. Even got my torque wrench calibrated after a couple pulled studs. Haste may have gotten me. But I swear the first time I had that motor apart I made sure everything was carefully placed and torqued.

Next step is pulling the cylinder and see what I find. I'll let you guys know.

I really appreciate the help.
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  #44  
Old 20th October 2019
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It's worth taking your time, else the time was wasted.
So you're saying there were pieces of (threads from a rag) in the pump?
Look for heat / score marks on the pistons and cylinder walls also.
Make sure there is no up and down play on the connecting rods (side to side play is normal).
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