Engine rebuild?

[Alan461]

Found a bit of play in the big ends, the fly wheel moves slightly without moving the pistons.
This is measured at about 15 degrees c I would expect less movement when hot
but how much is ok before taking it all to bits?

[Boosted LS1]

It's definitely toast. You'll need a new block and crank. What happens if you measure the crank radially from both ends together?

Edited by Boosted LS1 on Wednesday 2nd August 23:55

Edited by Boosted LS1 on Thursday 3rd August 19:44

[adam quantrill]

If it drives though it's not toast, not even brown bread. Carry on driving it until it throws a rod and save your money for a replacement engine rather than a rebuild (and sell the heads you take off to subsidise it)

[Alan461]

don't know how much oil pressure it will make as it's not run for years.
New shells or leave it be?

[Boosted LS1]

Always new shells when you've opened it that much. Or at least inspect what you have.

[Alan461]

Toast.
New shells then.

[Boosted LS1]

Are the journals smooth? You may as well check the mains as well.

[Alan461]

The journals are smooth on both the mains and big ends
and thankfully the main shells look much better than the big ends.
Might as well check the bores and pistons tomorrow.
Only took the engine out to allow access to strip and paint the chassis