[SEL] Compression question

[jlb94 at juno.com]

Hi Russell,
You state that there is a "very small amount of pitting".   
I don't think I would worry about it.  I've seen many engines run good as new with pitted cylinder walls.  Besides, If you would decide to trt to fill the pits with any kind of Epoxy - The walls would have to be super, super, SUPER clean.  And - still, it probably wouldn't stay intact.

Joe "Pip" Betz said that. 
jlb94 at juno.com - - - www.oldengine.org/members/betz
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---------- Original Message ----------
From: Russell <russell at ncable.com.au>
To: The SEL email discussion list <sel at lists.stationary-engine.com>
Subject: [SEL] Compression question
Date: Tue, 8 May 2012 07:47:40 +1000

Quite some time back I bought two very average looking Hornsby oil engines; a 2 and 3hp types. They came with enough bits to make one complete engine etc ................... Well I have hunted extra bits now and have enough to basically complete both. One will is going to a good mate whom is doing all the work (he has spare time) and the 2hp I will keep. Although not at the point yet of putting the piston back in and seeing how much compression it actually has, (my 2hp) I noticed there was a very small amount of pitting at the top of the bore. Now it's not much and only time will tell if it's even going to be a problem. How ever if it is a problem; I was thinking instead of boring or sleeving. Could I just cut another ring groove further back along the piston; remove the top ring and put in the lower new groove?? This would avoid the pitted area mostly and the majority of rings would be running in a clean bore? Any issues with something like this?

cheers all. Russell










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