Modern Vespa : T5 help

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OP vivvid UTC details Member et4 pre leader Joined: UTC Posts: 6 Location: uk
OP vivvid Member et4 pre leader Joined: UTC Posts: 6 Location: uk	UTC quote can anyone tell me what main jet i should use on a T% with a SIP pipe? Also the pipe is being hit by frame going over bumps? Any ideas to sort this?

Provastian UTC details Hooked 1985 T5 Mk1, 1984 PX200 EFL Joined: UTC Posts: 426 Location: Minneapolis, MN
Provastian Hooked 1985 T5 Mk1, 1984 PX200 EFL Joined: UTC Posts: 426 Location: Minneapolis, MN	UTC quote Try a 112, 114, or 116 main jet if the engine is standard and you're running a 24/24 carb.