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scooder · 01-26-2014, 04:02 PM

In answering another thread reminded me of the engine tucked away in the back of the shed. He's the type that had approx .040" thick hard sleeves fitted from the factory. The ones that you can reasonably easily pull out an replace in service. This engine had steel 3 ring pistons in him. I seem to recall from somewhere in the dark damp bit of my brain, that you can't use the normal aluminium pistons and cast iron rings, or is it just the ring material that's no good, Is this so? Anyone know?
I'm aware that you used to be able to get an oversize piston that will fit in the hole left after pulling the sleeve, +.085" or similar. But would like to know about what's needed to run the thin sleeves,'re piston/ring compatibility?
Many thanks.
Martin.

01-26-2014, 04:02 PM	#1
scooder Senior Member Join Date: Jul 2010 Posts: 2,593	replaceable steel cylinder sleeves. In answering another thread reminded me of the engine tucked away in the back of the shed. He's the type that had approx .040" thick hard sleeves fitted from the factory. The ones that you can reasonably easily pull out an replace in service. This engine had steel 3 ring pistons in him. I seem to recall from somewhere in the dark damp bit of my brain, that you can't use the normal aluminium pistons and cast iron rings, or is it just the ring material that's no good, Is this so? Anyone know? I'm aware that you used to be able to get an oversize piston that will fit in the hole left after pulling the sleeve, +.085" or similar. But would like to know about what's needed to run the thin sleeves,'re piston/ring compatibility? Many thanks. Martin.