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Rebuilt engine won't turn over

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Old Feb 21, 2024 | 02:46 PM
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Default Rebuilt engine won't turn over

I rebuilt my 09 t/c got everything back together, but the engine won't turn over. Opened up the primary and removed the chain and tensioner. The issue is the drive sprocket won't rotate. I can put up to the torque limit of 140 ft lbs on the bolt and the engine still will not rotate. It was rotating, when I assembled the engine, install pushrods, rocker plates and you have to find TDC.

​​​​​​It did sit for about three months after being rebuilt. I have fiberoptic camera and inspected the jugs through the spark plug openings and everything looks bright and clean.

Any ideas as to the issue and corrective measures?

BP
 
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Feb 23, 2024, 07:24 PM
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Originally Posted by Ohio HD
Did you remember to put the sprocket shaft spacer back in?

And here is the winner! I somehow failed to put the washer in...
 
Old Feb 21, 2024 | 03:00 PM
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What happens if you remove the spark plugs?
 
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Old Feb 21, 2024 | 03:26 PM
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Spark plugs have not yet been installed.
 
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Old Feb 21, 2024 | 03:31 PM
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Any movement in the reverse direction?
 
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Old Feb 21, 2024 | 03:39 PM
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No, the bolt will come loose first.

It's confounding as it was moving freely previously.
 
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Old Feb 21, 2024 | 03:51 PM
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I assume you had the case apart?
Gonna have to go into the right side cam section and take a look to see if anything's wrong there.......
Check the top end................
 
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Old Feb 21, 2024 | 03:54 PM
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Yes, I split the case and installed an s&s flywheel, new bearings and such as I was in that far and the bike has 98k on it.

I was thinking similar and I just reinstalled the exhaust system... Isn't that wrenching?
 
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Old Feb 21, 2024 | 03:58 PM
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Is the primary chain and clutch on? Did you use after market pistons and rings with different gap than manual?
 
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Old Feb 21, 2024 | 04:04 PM
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If the crank was rotating after assembly, it should rotate now. If the motor sat for three months, I suspect that the rings are stuck in the bore; maybe some corrosion, don't know. I am thinking pour some diesel fuel into the cylinders, let sit for a day or so and try again. If she breaks loose, drain the sump, pour some oil into the cylinders, make a few rotations and drain the sump again.
 
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Old Feb 21, 2024 | 04:05 PM
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"Is the primary chain and clutch on? Did you use after market pistons and rings with different gap than manual?"
If you read what he said, NO, the chain was not on...........AND that prior to this stage it was moving freely........so........you need some more reading compression!!!
 

Last edited by MURPHCC1; Feb 21, 2024 at 04:07 PM.
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