Yes I've got it free, I vacuumed the crap out of the cylinders spray in a little
WD40 and turns free.

 

I was looking at your other thread. All that build up wasnt allowing your piston to move all the way up

 

That is correct, the crap what ever it was ( I believe it was carbon ) would
not let the motor span free. Only allowing it the turn about 2/3 of a turn.

 

Let's not have multiple threads for the same thing, it's easier to follow one thread. I closed the other shorter thread.

Folks, there's some cylinder & piston shots here: https://ls1tech.com/forums/generatio...l#post18821621

 

People, this is why, unless its a running low mileage pull, always pull the heads off a used engine for a good look. This engine should've at minimum got a cylinder inspection, cleaning and fresh head gaskets and bolts. I would've gone one more step and had the heads gone through by a shop.

nofun, just to cover all bases, these engines have non re-useable head bolts. And the block bolt holes MUST BE EMPTY, CLEAN AND DRY.

 

Thanks Paul, It's going out to a shop to be freshen up. This is out of
my comfort zone. That is why I didn't pull the heads in the first place.

 

Good luck with everything and let us know how it goes!

 

Well hell, I thought this is something you pulled that you had been using.

I could of answered that right away had I known it was a JY motor.

 

You can easily clean that up by yourself BTW.

 

What I'm confused about is I thought the OP said it turned freely until he changed the intake & pan?

 

Great post. This kept my car off the road for 3 weeks one time when we were looking for the issue.

 

To bring this thread to an end and maybe help someone out in the further.
Motor is in shop and had two bad cylinders and pistons, rust was the culprit.
Were the moisture came from is anyone's guess, I only blame myself for
not spinning the motor every few weeks while it sat on the motor stand.
Of course were the crap in the cylinders ( maybe carbon ) that stopped
the motor from spanning in the first place got there I still have no answer for.