Little surprise

[Mustlust]

Well, just as I was thinking that the internals were ok, number 1 had a little surprise in store.
https://www.aulro.com/mobile-gallery/0022b8c03006c70def11819b38678bdb.jpghttps://www.aulro.com/mobile-gallery/8b5b3c3a4a911217f864a2008e6439af.jpg
Question: how bad is too bad?, and this is out of an 86 in but the piston is stamped 1949… I’m guessing that must have been a busy year for piston production. I can’t see and reference to size, so I’m guessing this is a standard sized piston. Would that be correct?

[B.S.F.]

Measure the piston! 1947 is probably the piston manufacturer's part number.
.W.

[1950landy]

Well, just as I was thinking that the internals were ok, number 1 had a little surprise in store.
https://www.aulro.com/mobile-gallery/0022b8c03006c70def11819b38678bdb.jpghttps://www.aulro.com/mobile-gallery/8b5b3c3a4a911217f864a2008e6439af.jpg
Question: how bad is too bad?, and this is out of an 86 in but the piston is stamped 1949… I’m guessing that must have been a busy year for piston production. I can’t see and reference to size, so I’m guessing this is a standard sized piston. Would that be correct?

That piston is beyond it. As BSF said probably P/Number. You will need to measure the piston to find out the size.
I was up at our workshop the other day getting a couple of parts for someone & came across my old pistons out of my early 1950 was going to bring them home but decided not to other wise I would have checked what was on them.

[Mustlust]

Any idea where I can source a replacement piston? Measurements suggest they are all standard size.

[1950landy]

I bought pistons from JP Pistons for my 1949 Rover P3 75. Same style of piston only different size, I never had a problem with them while I owned the vehicle & they had them on the shelf. Think they are in SA you could give them a try.