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What jet size in a brosol 30/31 for a 1641
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sallyandsean
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Joined: June 03, 2010
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Location: Haworth UK
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PostPosted: Tue Apr 02, 2019 2:17 pm    Post subject: What jet size in a brosol 30/31 for a 1641 Reply with quote

Just bought a new brosol (with standard 120 main jet) for my twinport 1641 with a 009 and a stinger exhaust.

Would I be correct in thinking a 1.325 main jet and 55 idle would be about right?

Cheers
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rcooled
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Joined: September 20, 2008
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PostPosted: Tue Apr 02, 2019 2:34 pm    Post subject: Re: What jet size in a brosol 30/31 for a 1641 Reply with quote

That's a good starting point. You may want to bump the idle jet up to a 60 if you find that you're running a bit lean.
Check your sparkplugs after a few hundred miles...should look similar to this ↓

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sallyandsean
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Joined: June 03, 2010
Posts: 99
Location: Haworth UK
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PostPosted: Tue Apr 02, 2019 2:48 pm    Post subject: Re: What jet size in a brosol 30/31 for a 1641 Reply with quote

rcooled wrote:
That's a good starting point. You may want to bump the idle jet up to a 60 if you find that you're running a bit lean.
Check your sparkplugs after a few hundred miles...should look similar to this ↓

Image may have been reduced in size. Click image to view fullscreen.


Cool
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