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Barrels on but pistons won't move, what's going on. Help me !!!

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billdn:
Barrels rebored to +.25 and pistons/rings supplied to suit.Bit of a fight to get barrels on but now pistons won't move up or down when turning crank. Moved fine before barrels went on, stripping back down to look but any ideas,  please help me before I turn to drink !

Nurse Julie:
They should be tight Bill if the rebore was done to the correct tight tolerances. But, they should move. Did you put any assembly lube (Graphogen or similar) or oil down the bores?

Nurse Julie:
Another thought Bill, did whom ever do the rebore physically have the new pistons when the work was done?

Johnwebley:
Check the ring gaps,


Do the pistons move in the bores without the rings?

Sent from my SM-A750FN using Tapatalk

billdn:

--- Quote from: Nurse Julie on May 21, 2022, 03:52:12 PM ---They should be tight Bill if the rebore was done to the correct tight tolerances. But, they should move. Did you put any assembly lube (Graphogen or similar) or oil down the bores?

--- End quote ---
Hi Julie,
Assembly oil galore on pistons and bores.

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