04-28-2022, 06:28 PM | #1 |
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Piston notch
My newly acquired 59 flathead has a notch in Cylinder #2.
It appears that it is suppose to be there and wasn't caused by any damage. Anyone have any ideas what it is? None of the other piston have it. Thanks, Julie |
04-28-2022, 06:37 PM | #2 |
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Re: Piston notch
Probably means forward to front of engine. Although, that is a bigger indicator.
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04-28-2022, 06:41 PM | #3 |
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Re: Piston notch
I'm most certainly not an engine guy.
But generally a mark on the piston means put it towards the front of the engine. That specific one is a little large. If that's the only one it may indicate this piston is not part of the original set?
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04-28-2022, 06:56 PM | #4 |
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Re: Piston notch
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04-28-2022, 06:59 PM | #5 |
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Re: Piston notch
The notch in the piston is for the direction it should point to the front of the block for assembly. Original pistons and after market pistons will have a notch this large at times.
Ronnieroadster
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04-28-2022, 07:02 PM | #6 |
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Re: Piston notch
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04-28-2022, 07:28 PM | #7 |
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Re: Piston notch
Back in the day, it was not unusual to replace one piston if there was a problem. I did it myself a couple of times. We usually sourced the piston form the "piston pile" at the local junkyard. We didn't care what it looked like; if it was whole and it fit, we'd use it.
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04-28-2022, 09:26 PM | #8 | |
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Re: Piston notch
Quote:
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04-28-2022, 10:00 PM | #9 |
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Re: Piston notch
The "Notch" was only used on pistons with ofset wrist pins, So I was told. Otherwise what differance would it make which way you installed the piston??
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04-28-2022, 11:11 PM | #10 |
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Re: Piston notch
Learned sumthin new there !
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04-29-2022, 03:35 PM | #11 |
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Re: Piston notch
They offset the crankshaft.
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