Re: Air Boxes

Jim C. /
This single post is part of a larger thread. Start from the top or view this post in context.

The air boxes are all the same. The disc that sits behind the filter screen (away from the engine) has the holes. Three for the smaller carbs and jets, six for the larger.

The smaller carb has a 10MM throat, the large is 12MM.

How to spot them in a glance:

On a 10MM, with the choke blade in the open position, there will be a space between the edge of the blade and the edge of the throat.

On the 12MM, the edge of the blade is almost touching the edge of the hole.

Hop up tip that probably doesn't work:

On my Grande I noticed that the outside end of the throat had a sharp edge on it. I sanded it round with some emery cloth, them polished it with white rubbing compound. A poor man's velocity stack! If you try this, don't reshape the throat. just round off the sharp edge.

I think this is the equivalent of disconnecting the governor on mine.

Jim

This single post is part of a larger thread. Start from the top or view this post in context.
Subject Written By Posted
  vespa carb jettingTopic by: XBrandon EdgeX XBrandon EdgeX 10/05/01 11:48PM
  Re: vespa carb jettingRe: John John 10/06/01 12:00AM
  Re: vespa carb jettingRe: XBrandon EdgeX XBrandon EdgeX 10/06/01 12:04AM
  Re: vespa carb jettingRe: Jim C. Jim C. 10/07/01 12:24AM
  Re: vespa carb jettingRe: Chris S Chris S 10/07/01 01:43AM
  Re: vespa carb jettingRe: XBrandon EdgeX XBrandon EdgeX 10/07/01 02:29PM
  Re: vespa carb jettingRe: Vespalad Vespalad 10/07/01 11:59PM
  Re: vespa carb jettingRe: XBrandon EdgeX XBrandon EdgeX 10/08/01 12:34AM
  Re: vespa carb jettingRe: Fred Fred 10/08/01 01:03AM
  Re: vespa carb jettingRe: Chris S Chris S 10/08/01 09:40PM
  Re: vespa carb jettingRe: Vespalad Vespalad 10/08/01 10:08PM
  Re: vespa carb jettingRe: Chris S Chris S 10/09/01 11:24PM
  Re: vespa carb jettingRe: XBrandon EdgeX XBrandon EdgeX 10/08/01 10:48PM
  Re: vespa carb jettingRe: Ron Brown Ron Brown 10/09/01 01:11PM
  Re: Air BoxesRe: Jim C. Jim C. 10/09/01 12:33AM

Want to post in this forum? We'd love to have you join the discussion, but first:

Login or Create Account