#40 Slow Jets

Cyclejohn

Member

Posts: 146

Reidsville,N.C.

#40 Slow Jets

« on: July 12, 2010, 06:14:44 PM »

I know that one of the popular upgrades on the Valkyrie is to change to #38 slow jets. I was wondering if anyone had ever tried #40 slow jets? Thanks, John


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Robert

Member

Posts: 17029

S Florida

Re: #40 Slow Jets

« Reply #1 on: July 12, 2010, 06:59:20 PM »

Why would you when 38 is about as rich as you would want to go?


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“Some people see things that are and ask, Why? Some people dream of things that never were and ask, Why not? Some people have to go to work and don’t have time for all that.”

John U.

Member

Posts: 1085

Southern Delaware

Re: #40 Slow Jets

« Reply #2 on: July 12, 2010, 10:53:20 PM »

Many of us who changed to 38s have reduced the pilot screw to 1 3/4 out instead of 2 1/4 to 2 1/2. A larger jet would reduce the pilot adjustment again. It can get to the point where the pilot screw adjustment is just too small and prone to mistake.


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98valk

Member

Posts: 13502

South Jersey

Re: #40 Slow Jets

« Reply #3 on: July 13, 2010, 05:23:57 AM »

Quote from: CYCLEJOHN on July 12, 2010, 06:14:44 PM

I know that one of the popular upgrades on the Valkyrie is to change to #38 slow jets. I was wondering if anyone had ever tried #40 slow jets? Thanks, John

without aftermarket exhaust and airbox mods it will be to rich esp. at idle.

go to tech section of www.factorypro.com many good carb tunning articles. there is one about pilot jets and their tunning. any pilot can be opened up to 4 1/2 turns after that next larger size required.


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