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40 Deluxe · 02-13-2018, 01:47 AM

How did the cylinder walls look? No scoring? Good! Highly polished? Not good! If they're glazed, it's an indication new rings are needed, along with honing the cylinders, of course. You can keep trying the mouse milk approach, or bite the bullet and drop the pan and push the pistons out and clean the carbon off the rings and ring grooves. Or, better yet, just put new rings in. Unless there is obvious, easily seen damage to a piston(s), all you need are a gasket set and the rings. Lap in the valves by hand and you will have done a '50's style overhaul (valve and ring job) and be good to go for many more years.

02-13-2018, 01:47 AM	#12
40 Deluxe Senior Member Join Date: May 2010 Location: now Kuna, Idaho Posts: 3,779	Re: 1950 8BA Oil Gusher How did the cylinder walls look? No scoring? Good! Highly polished? Not good! If they're glazed, it's an indication new rings are needed, along with honing the cylinders, of course. You can keep trying the mouse milk approach, or bite the bullet and drop the pan and push the pistons out and clean the carbon off the rings and ring grooves. Or, better yet, just put new rings in. Unless there is obvious, easily seen damage to a piston(s), all you need are a gasket set and the rings. Lap in the valves by hand and you will have done a '50's style overhaul (valve and ring job) and be good to go for many more years.