Modern Vespa : Dr180 piston clearances

Dr180 piston clearances

OP Nelluch125 UTC details Hooked 1981 Vespa P200e, 1985 Vespa PX125e, 1985 T5, 1971 Sprint Veloce Joined: UTC Posts: 375 Location: St. Catharines, Ontario
OP Nelluch125 Hooked 1981 Vespa P200e, 1985 Vespa PX125e, 1985 T5, 1971 Sprint Veloce Joined: UTC Posts: 375 Location: St. Catharines, Ontario	UTC quote Hi all, Does anyone have any official information on the dr180 piston clearances? I am planning on installing a 1st OS piston on a dr180 kit after a seize. Just wondering what the cylinder tolerances are for when I rebore. Hope you can help. Thank you as always. N

SubEtherBASS UTC details Ossessionato 1997 Italjet Formula 125, 2 matching N.Z. '69 VBC Super, 177cc Racer, VespaCross Bodge, Puch SRA150, Piaggio Zip 100! & others Joined: UTC Posts: 4988 Location: Australa, Mate
SubEtherBASS Ossessionato 1997 Italjet Formula 125, 2 matching N.Z. '69 VBC Super, 177cc Racer, VespaCross Bodge, Puch SRA150, Piaggio Zip 100! & others Joined: UTC Posts: 4988 Location: Australa, Mate	UTC quote The SEARCH function will have lots on the topic

GickSpeed

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GickSpeed

Ossessionato

Joined: UTC
Posts: 2514
Location: Racing Capital of the World

UTC quote

Nelluch125 wrote:

Hi all,

Does anyone have any official information on the dr180 piston clearances?

I am planning on installing a 1st OS piston on a dr180 kit after a seize.

Just wondering what the cylinder tolerances are for when I rebore.

Hope you can help.
Thank you as always.

N

find a small shop in your area that has a track record of boring cylinders for both 4T and 2T. There ain't nothing special about a Vespa 2t cylinder, they will bore and hone it for its size; .003-.004.

There is information on this board as stated by the previous member.

OP Nelluch125 UTC details Hooked 1981 Vespa P200e, 1985 Vespa PX125e, 1985 T5, 1971 Sprint Veloce Joined: UTC Posts: 375 Location: St. Catharines, Ontario
OP Nelluch125 Hooked 1981 Vespa P200e, 1985 Vespa PX125e, 1985 T5, 1971 Sprint Veloce Joined: UTC Posts: 375 Location: St. Catharines, Ontario	UTC quote Thanks everyone. I'll do a deeper search on the boards as well. The machine shop I use will be able to bore to the appropriate size.

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