I don't think it will work. I know people who put burr bits plugged with aluminum in muriatic to clean them. They let them soak for a few days. I dont see how you can do that with a cyl. I would try to scrape off all you can before trying the muriatic. Also make sure you don't get any on the crank journal. Are you sure you don't have any other engine issues. It takes a lot of heat to distort the cyl or piston bad enough to score a piston like that.
Bill
No, that doesn't sound like it'll work does it? The metal is pretty dense too....it's not very tall, but its dense.
As far as other engine issues, I don't have an inside mic (or whatever it's called) to mic the cylinder, so I'm going to try and use a compression ring to see if the cylinder egg shaped....hopefully it didn't. The picture of the cylinder looks scored worse that it really is....There are small lines in the cylinder, but NONE that you could even hang your fingernail on. The other 2 pistons look fine, and all 3 rod bearings are ok. No visible cracks in the head or block deck. I did a leakdown, and all the valves are sealing well.
My concern (which I don't have the tools to determine) is something got warped (cylinder, deck or head). I'm gonna remove the metal somehow, deglaze/hone all 3 cylinders, replace the bad piston, and all 3 sets of rings......and keep my fingers crossed. Would you replace the other 2 pistons also? Not to sound cheap, but they're $150.00 each. ($300.00 is alot of money right now
)
How the heck did that happen ?
In my line of work, they say 3 errors or failures normally lead to an accident:
1 - A friend drained the antifreeze and didn't tell me (He intended on refilling it in a couple of days)
2 - I didn't check it.
3 - Temperature sending unit was bad (this tractor doesn't have gauges, only warning lights that come on if temp is too high, oil pressure too low, or alternator failure).
It ran about 10 mintues with no coolant in the engine
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