Re: I can't tune my Mikuni VM20 and need help

Daniel '' /
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Simo is a great pipe, big old ripper, like the biggest badest pipe out there. Ive had it on 50 and 74cc set ups and works great, its just a bit hard to tune in. It hits late so low gearing is a must to get to the pipe faster. I think your problems are ignition related, try cleaning up the points and setting them at .45mm or .017". Usually if a bike is 4 stroking (no matter what jet you put in it) under heavy load its a case leak. Also most piston port set ups are much more forgiving to tune in with out an air filter.

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Subject Written By Posted
  I can't tune my Mikuni VM20 and need helpTopic by: Ahamd Bahrami Ahamd Bahrami 05/25/19 04:14PM
  Re: I can't tune my Mikuni VM20 and need helpRe: Stephen Simmons Stephen Simmons 05/25/19 09:34PM
  Re: I can't tune my Mikuni VM20 and need helpRe: iskra chornia iskra chornia 05/25/19 10:22PM
  Re: I can't tune my Mikuni VM20 and need helpRe: Ahamd Bahrami Ahamd Bahrami 05/25/19 10:29PM
  Re: I can't tune my Mikuni VM20 and need helpRe: Russell Huddy Russell Huddy 05/26/19 12:26AM
  Re: I can't tune my Mikuni VM20 and need helpRe: Ahamd Bahrami Ahamd Bahrami 05/26/19 01:06PM
  Re: I can't tune my Mikuni VM20 and need helpRe: Daniel '' Daniel '' 05/26/19 12:06PM
  Re: I can't tune my Mikuni VM20 and need helpRe: Ahamd Bahrami Ahamd Bahrami 05/26/19 01:17PM
  Re: I can't tune my Mikuni VM20 and need helpRe: Overpriced Parts Overpriced Parts 05/26/19 05:15PM
  Re: I can't tune my Mikuni VM20 and need helpRe: Ahamd Bahrami Ahamd Bahrami 05/26/19 07:42PM
  Re: I can't tune my Mikuni VM20 and need helpRe: Daniel '' Daniel '' 05/27/19 12:38PM
  Re: I can't tune my Mikuni VM20 and need helpRe: Ahamd Bahrami Ahamd Bahrami 05/27/19 01:20PM
  Re: I can't tune my Mikuni VM20 and need helpRe: Daniel '' Daniel '' 05/27/19 02:03PM
  Re: I can't tune my Mikuni VM20 and need helpRe: Ahamd Bahrami Ahamd Bahrami 05/27/19 02:33PM
  Re: I can't tune my Mikuni VM20 and need helpRe: Daniel '' Daniel '' 05/27/19 03:39PM
  Re: I can't tune my Mikuni VM20 and need helpRe: Ahamd Bahrami Ahamd Bahrami 05/27/19 03:42PM
  Re: I can't tune my Mikuni VM20 and need helpRe: Ahamd Bahrami Ahamd Bahrami 05/29/19 03:47PM
  Re: I can't tune my Mikuni VM20 and need helpRe: Full Tuck Full Tuck 05/30/19 07:46AM
  Re: I can't tune my Mikuni VM20 and need helpRe: Ahamd Bahrami Ahamd Bahrami 05/30/19 04:11PM
  Re: I can't tune my Mikuni VM20 and need helpRe: D dB D dB 06/03/19 01:19PM
  Re: I can't tune my Mikuni VM20 and need helpRe: Tri-ped Dave Tri-ped Dave 05/30/19 04:52PM
  Re: I can't tune my Mikuni VM20 and need helpRe: Ahamd Bahrami Ahamd Bahrami 05/30/19 08:36PM
  Re: I can't tune my Mikuni VM20 and need helpRe: Tri-ped Dave Tri-ped Dave 05/31/19 04:06PM
  Re: I can't tune my Mikuni VM20 and need helpRe: Aaron Blair Aaron Blair 06/01/19 07:01AM
  Re: I can't tune my Mikuni VM20 and need helpRe: Ahamd Bahrami Ahamd Bahrami 06/01/19 03:07AM
  Re: I can't tune my Mikuni VM20 and need helpRe: alex ganz alex ganz 06/01/19 10:38PM
  Re: I can't tune my Mikuni VM20 and need helpRe: Bryan Colliver Bryan Colliver 06/04/19 11:44AM

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