Pistons

[Peterp]

Hello all, I’m struggling with selecting a piston for my TV175 3. At present it’s 63.2mm, so next step is 64mm ????
I’m understanding your remark Paul about “good luck with that”.
Should I go for a two ring piston or three ring? Indian, Chinese, Korean, Taiwanese or Rimini.
Beginning to think I should have bought a Vespa

[hullygully]

64mm is a large step up, by-passing 3 other oversize bores.
your best bet is to first find an oversize piston & rebore to suit bud
are you sure the barrel is a tv175, the same with the crank.
If its just a sx/li crank with a bored out 150 barrel then the world's your oyster

[Peterp]

Hello Hully,
Yep, it’s 175, with a 63.2mm piston. But,,, I really don’t know enough about this to make a decision, by that I mean, confusion creeps in as to which pistons are quality. My days of mechanicing was four stroke from 900cc up to diesel 14000cc.

[Martin s]

Hi,
Rimini lambretta have a 63.6 three ring original Borgo piston, its 120 Euro though, plus postage.
Depends how original you want it. You can get a Suzuki copy piston from Taiwan at 64mm cheap, but I think
they are still reasonable quality.

[hullygully]

I'd go with the two thin ringed jap piston every time Pete

[Peterp]

Thanks Hully,
Where would you go to for this,

[Storkfoot]

Pete, read this again. It’s not complicated but it isn’t a straight swap for an original TV175 piston.

I’d recommend speaking with Martin at Chiselspeed if you go down this route.

Paul

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