Author Topic: Piston stamp marks  (Read 296 times)

Online ellis

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Piston stamp marks
« on: 21.03. 2016 15:29 »
Hi,
Could any one shed some light on the numbers stamped on my pistons. It looks like the first number could be an 0 or a 1  d.15  I cannot see a plus mark anywhere on them.   There are clear honing marks on the bores.                                                                                     std      b                                                                                                                                                                                                                                     

 The bike is a 1960 A10 Swing arm. Any help would be grateful.

Ellis       

Online ellis

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Re: Piston stamp marks
« Reply #1 on: 22.03. 2016 00:23 »
Could any one shed some light on the numbers stamped on my pistons. The number is  1.d.15  I cannot see a plus sign on them. There are clear honing marks on the bores. The bike is a 1960 GF swing arm.

ELLIS

Offline duTch

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Re: Piston stamp marks
« Reply #2 on: 22.03. 2016 08:39 »

 Hola Ellis, best shot is measure the pistins if possible, and post a photo, we'll all have a better idea  *wink2*
Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
Australia

Online ellis

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Re: Piston stamp marks
« Reply #3 on: 22.03. 2016 11:01 »
Hi Dutch,

Yes that would be the best way to go but the engine is complete in the bike. It's me being inquisitive as to the engine whether it is re bored or if it was standard and just having a hone job.

Thanks for your reply,
ELLIS   *conf2*