Modern Vespa : Malossi piston deciphering

Malossi piston deciphering

OP MJRally UTC details Veni, Vidi, Posti 73 & 74 Rally, 76 ET3, 80 P200, 06 PX150, 59 Ser 2, 65 Silver Special, 90 V5N 50, 2015 HD Road Glide Special Joined: UTC Posts: 5199 Location: Oceanside, CA
OP MJRally Veni, Vidi, Posti 73 & 74 Rally, 76 ET3, 80 P200, 06 PX150, 59 Ser 2, 65 Silver Special, 90 V5N 50, 2015 HD Road Glide Special Joined: UTC Posts: 5199 Location: Oceanside, CA	UTC quote Old school Malossi 210 kit I received needs a new piston. Head is too pock marked to make out any old writing. Anyone know how to tell if its an A, B, C piston? 68.3-68.4mm diameter. SIP's description shows every piston @ 68.5mm. Looks like this Metal clutch side seal nicked it up a bit.

SaFiS

UTC

details

Ossessionato

1979 P150X, 1983 P200E, 1987 PK125XL Elestart, 1988 T5, 1995 PX200E, 2011 Yamaha Fazer 600 S2

Joined: UTC
Posts: 4390
Location: Veria, Greece

SaFiS

Ossessionato

1979 P150X, 1983 P200E, 1987 PK125XL Elestart, 1988 T5, 1995 PX200E, 2011 Yamaha Fazer 600 S2

Joined: UTC
Posts: 4390
Location: Veria, Greece

UTC quote

There should be letters on the base of the cylinder (boost port). Replacement pistons are the newer Vertex with the graphite coating, they work fine on old kits and are better. If you can have the cylinder measured it would be best so you can choose a "thicker" piston to make for wear…

Tolerances…

"0" = 68.410 - 68.419
"A" = 68.420 - 68.429
"B" = 68.430 - 68.439
"C" = 68.440 - 68.449
"D" = 68.450 - 68.459
"H" = 68.490 - 68.499

Jack221 UTC details Jet Eye Master PX221 MHR, O tuned PX200, PX181, PX125 and some motorbikes Joined: UTC Posts: 4667 Location: London UK
Jack221 Jet Eye Master PX221 MHR, O tuned PX200, PX181, PX125 and some motorbikes Joined: UTC Posts: 4667 Location: London UK	UTC quote If the piston is that bad on the crown, the bore may not be in mint condition. Especially at the top 1/4 inch. +1 on vertex piston better matched than the original.

OP MJRally UTC details Veni, Vidi, Posti 73 & 74 Rally, 76 ET3, 80 P200, 06 PX150, 59 Ser 2, 65 Silver Special, 90 V5N 50, 2015 HD Road Glide Special Joined: UTC Posts: 5199 Location: Oceanside, CA
OP MJRally Veni, Vidi, Posti 73 & 74 Rally, 76 ET3, 80 P200, 06 PX150, 59 Ser 2, 65 Silver Special, 90 V5N 50, 2015 HD Road Glide Special Joined: UTC Posts: 5199 Location: Oceanside, CA	UTC quote Looks like I've got the B version. Question now is single ring or double ring? I'm think double as I'm not going to be using this immediately and it will never go into anything too hot. https://www.sip-scootershop.com/en/product/piston-malossi-b-221-210-sport-mhr_3416293B?q=Malossi%20piston https://www.sip-scootershop.com/en/product/piston-malossi-b-210-sport-2016_3416294B

OP MJRally UTC details Veni, Vidi, Posti 73 & 74 Rally, 76 ET3, 80 P200, 06 PX150, 59 Ser 2, 65 Silver Special, 90 V5N 50, 2015 HD Road Glide Special Joined: UTC Posts: 5199 Location: Oceanside, CA
OP MJRally Veni, Vidi, Posti 73 & 74 Rally, 76 ET3, 80 P200, 06 PX150, 59 Ser 2, 65 Silver Special, 90 V5N 50, 2015 HD Road Glide Special Joined: UTC Posts: 5199 Location: Oceanside, CA	UTC quote Bump. Penny for anyones thoughts?

SaFiS UTC details Ossessionato 1979 P150X, 1983 P200E, 1987 PK125XL Elestart, 1988 T5, 1995 PX200E, 2011 Yamaha Fazer 600 S2 Joined: UTC Posts: 4390 Location: Veria, Greece
SaFiS Ossessionato 1979 P150X, 1983 P200E, 1987 PK125XL Elestart, 1988 T5, 1995 PX200E, 2011 Yamaha Fazer 600 S2 Joined: UTC Posts: 4390 Location: Veria, Greece	UTC quote Stay double ring but as I said it would be better to have the cylinder measured. On most old kits I worked on we went for the next grade to make for wear and avoid the famous Malossi rattle…

OP MJRally UTC details Veni, Vidi, Posti 73 & 74 Rally, 76 ET3, 80 P200, 06 PX150, 59 Ser 2, 65 Silver Special, 90 V5N 50, 2015 HD Road Glide Special Joined: UTC Posts: 5199 Location: Oceanside, CA
OP MJRally Veni, Vidi, Posti 73 & 74 Rally, 76 ET3, 80 P200, 06 PX150, 59 Ser 2, 65 Silver Special, 90 V5N 50, 2015 HD Road Glide Special Joined: UTC Posts: 5199 Location: Oceanside, CA	UTC quote Excellent! Thank you

Post Reply

Modern Vespa is the premier site for modern Vespa and Piaggio scooters. Vespa GTS300, GTS250, GTV, GT200, LX150, LXS, ET4, ET2, MP3, Fuoco, Elettrica and more.

Shop on Amazon with Modern Vespa

Modern Vespa is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com

[ Time: 0.0123s ][ Queries: 4 (0.0033s) ][ live ][ 313 ][ ThingOne ]