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Sleeving a small cylinder

JoeCB

Subscriber
Last Subscription Date
03/19/2020
I'm looking to bore and sleeve a small cylinder on an antique outboard motor. 2 Inch bore. Sleeve is to be cast iron. I sure would like to start machining the sleeve from a piece of cored CI stock rather than having to drill and bore a hunk of solid bar stock. The only cored stock I can find is way to big ( 3- 1/2 OD). Anyone know a source for more reasonable cored (tube) cast Iron stock? Something like 1- 3/4 ID X 2 - 1/2 OD. Maybe it's unavoidable... I'm looking at lots of black chips and a big mess in the shop!

Joe B
 

JoeCB

Subscriber
Last Subscription Date
03/19/2020
Bill, Thank you - Thank you! Melling is in Jackson MI , about a half hour away from me. I'll call and see if I can just pick up a couple of sleeves. Their smallest size listed ( 1.970 ID ) is exactly what I need.

Joe B
 

K-Tron

Registered
It may be a better idea to have the piston teflon coated and the bore honed slightly oversize. How are you planning to cut the ports into your cylinder? Last I inquired a sleeve with ports machined into it around your bore size started at $300, and that was several years ago.

Chris
 

JoeCB

Subscriber
Last Subscription Date
03/19/2020
Thanks again for the lead on the other source, much appreciated. As for the ports, looks like I can get in with an extended mill cutter, like a key cutter. The original ports were cut thru or at least cleaned up in the fashion.

Joe B
 

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