Engine grabby when turning over by hand?

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Jun 23, 2015 | 06:30 PM

wayland1985

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Engine grabby when turning over by hand?

Heads are on: I'm using a 1/2 Wrench and 24mm socket to turn the motor over:

It mostly turns nice and easy, but at one point during the cycle, it starts to get noticeably difficult.

I cleaned the cylinders out before install...

Any cause for concern here?

Jun 24, 2015 | 07:18 AM

farmington

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From: Little River SC

spark plugs in?

Jun 24, 2015 | 07:22 AM

wayland1985

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Quote:

Originally Posted by farmington

spark plugs in?

Nope.

Jun 24, 2015 | 07:48 AM

kinglt-1

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Not good. Heads milled? What gasket?

Jun 24, 2015 | 07:53 AM

wayland1985

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Trick flow heads milled to 61cc.

GM MLS gasket, with a coating of copper gasket spray.

No pushrods or anything installed, but all plugs are pulled.

Jun 24, 2015 | 08:09 AM

kinglt-1

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Ok well it would not be a ptv issue then with no push rods installed...If I remember correctly mine turned over smoothly with no plugs installed.

Jun 24, 2015 | 08:26 AM

wayland1985

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Quote:

Originally Posted by kinglt-1

Ok well it would not be a ptv issue then with no push rods installed...If I remember correctly mine turned over smoothly with no plugs installed.

It juuuuust catches at one point.... I wonder if maybe I missed some carbon in one of the Pistons/cylinders?

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Jun 24, 2015 | 08:46 PM

wayland1985

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Quote:

Originally Posted by Mike_hawk

Have you done any work to the oil pan or windage tray?

Not really. I did drop the pan a few inches to replace the oil pump.

Jun 24, 2015 | 08:51 PM

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svede1212

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There shouldn't be carbon in the bore where the rings ride even if the pistons were caked with it. I'd be concerned.

Jun 24, 2015 | 08:56 PM

#11

wayland1985

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Quote:

Originally Posted by svede1212

There shouldn't be carbon in the bore where the rings ride even if the pistons were caked with it. I'd be concerned.

Bummer. I'm going to try and pull the flywheel off. I loosely mounted it on, and I'm wondering if maybe it's grabbing something.

It does turn over... But like I said, it gets noticeably stiffer at one point.

Jun 25, 2015 | 11:12 AM

#12

wayland1985

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Took the flywheel off, and it seems to have resolved itself. Engine turns over consistently.

I never torqued the flywheel down, so it must have been dragging on something.