060 on block and pistons

[Slik]

Working on "unsticking" my "barn find" engine in a 29 150A. Prior to it being stored 30 years ago all the values, springs and guides were replaced. The car was driven maybe 250 miles after the valve work then put in storage.
First day - I tried using the hand crank to turn the engine - nothing.
Shot 2 cans of PB blaster down the plug holes and trailered it home. Back passenger wheel is locked up - made it a bit of a bitch to get off the trailer, but she is tucked away in the garage now.

I've begun breaking it down and bathing it in MMO. Pulled the head and surprisingly other then just a bit of carbon the values and piston tops look almost like new. As i wiped the little bit of grime from the piston tops I noticed 60 stamped on them - I also found the 060 stamped on the back part of the block. I'm taking a guess here but I'm thinking that is saying this has been honed to .060 over ?
I've removed all of the values, springs and guides - numbered them and was planning on using them again. Not trying to be cheap but can I clean up the outside cone end of the guides - they have a bit of rust on them - and reuse them ?
Drained radiator and gas.
Pulled the oil pan and there was some sludge in it - removed with a putty knife.
Next step is to seal all orifices and flood with ATM and Acetone mix and let it sit for 4 weeks (while I'm on travel for work). Hoping when I get back that maybe I'll have some movement in the engine.
Reason I was asking about the 060 number was that IF I get to the point of a rebuild I guess I'd need to determine what size piston and rings will be needed.
I'm told this is the original engine and it has 69830 original miles.

Glad I found these forum - only downfall is that I'm spending more time on here reading then getting other things done - like cutting my grass

[J Franklin]

Don't worry about the piston or bore size because if it were to be rebuilt it may need to be bored to a different size. Determine what is actually stuck and get it running before thinking about a rebuild. Maybe it has had more work done than you have been told.

[Tom Wesenberg]

I've removed all of the values, springs and guides - numbered them and was planning on using them again. Not trying to be cheap but can I clean up the outside cone end of the guides - they have a bit of rust on them - and reuse them ?
Drained radiator and gas.
Pulled the oil pan and there was some sludge in it - removed with a putty knife.
Next step is to seal all orifices and flood with ATM and Acetone mix and let it sit for 4 weeks (while I'm on travel for work). Hoping when I get back that maybe I'll have some movement in the engine.
Reason I was asking about the 060 number was that IF I get to the point of a rebuild I guess I'd need to determine what size piston and rings will be needed.
I'm told this is the original engine and it has 69830 original miles.

Glad I found these forum - only downfall is that I'm spending more time on here reading then getting other things done - like cutting my grass [/QUOTE]

Planning to dump a lot of money into this engine, are ya?

You can clean the rust off the guides and reuse them as long as they aren't too loose in the engine, and the valves aren't too loose in the guides.

[Slik]

Thanks for the replies.
Tom - you highlighted my "flood with ATM" - was that good or bad ?
I'll put it this way, if I can keep from dumping a lot of money into getting this running, my wife will be much happier. At this point I am committed to getting this running right - not looking to be sloppy but at the same time trying to be somewhat prudent in where the money goes too.

[Tom Wesenberg]

Originally Posted by Slik

Thanks for the replies.
Tom - you highlighted my "flood with ATM" - was that good or bad ?
I'll put it this way, if I can keep from dumping a lot of money into getting this running, my wife will be much happier. At this point I am committed to getting this running right - not looking to be sloppy but at the same time trying to be somewhat prudent in where the money goes too.

It was a joke...........ATM is for money, and ATF is the automatic tranny fluid you had in mind.

Mike, I removed the head from a 1929 Chevy engine years ago and found someone bored the cylinders .030" oversize but used the stock pistons. I'll bet that engine had some piston slap.

[MikeK]

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Do NOT rely solely on stamped numbers for piston size! Use a bore micrometer and measure.

I had an engine with a 1970's rebuild and pistons marked "0.050". The bores measured 0.020" over, not 0.050". I was puzzled for a moment, then reached for my slide rule.

Turns out the pistons were made in Argentina and the 0.050 marking was millimeters, not inches. 0.050mm is 0.020".

[stewwolfe]

You mean you can't just put standard sized stuff in after you bore he engine? You're taking all the fun out of this hobby.