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Re-jet settings Chart

Below is a basic startup jet and needle setting for each type air kit verses most of the common pipes. These are not exact settings but a good starting point to a well tuned bike. All bikes and altitudes are different and yours may be one of them. We recommend using stock pilots. And so do the people at Dyno-Jet. The jet sizes are Mikuni and the items marked Not rec. means Not recommended, we are not saying they will not work just that the setup has not been determined or creates a  lot of problems.  If there is more that one size listed, that means you may have to try different jet sizes to see what works best for you.  In that case, we've given you a range to try.  This does not mean to use different size jets in your two carbs.


Exhaust
 
Rak jets GAK jets HC jets Bak jets Tak jets Mix screws Shims ** Adj. * needles
Stock ***
 
110

Not rec

Not rec

Not rec

Not rec

2.5 1 or 2  3rd notch
2nd Baffle drilled ***
 
112.5

Not rec

Not rec

Not rec

Not rec

2.5 1 or 2  3rd notch
3rd Baffle drilled ***
 
112.5 115 120 -125 125-127.5 120 125 120 125 3.5 2 4th notch
Gutted ***
 
115 120 125 127.5 127.5 -130 125 -127.5 125-127.5 3.5 2 4th notch
HK
 
117.5 120 125 127.5 127.5 -130 125 -127.5 125-127.5 3.5 2 4th notch
V&H Short Shots
 
117.5 120 125 127.5 127.5 -130 125 -127.5 125-127.5 3.5 2 4th notch
V&H Cruisers
 
117.5 120 122.5 -127.5 125 127.5 122.5 127.5 122.5 127.5 3.5 2 4th notch
Cobras
(Slash Cut &
Drag Pipes)

 
115 - 120 122.5 -127.5 125 127.5 122.5 127.5 122.5 127.5 3.5 2 4th notch
Jardines
 
115 120 122.5 -127.5 125 127.5 122.5 127.5 122.5 127.5 3.5 2 4th notch
Roadhouse
 2 into 1

 
112.5 115 120 -125 Not rec 120 125 120 125 2.5 1 or 2   3rd notch

See notes below


* Instructions below for the "E" clip

If adjustable needle is used, the notches are counted from the blunt end of the needle. The E clip is installed the desired notch. More jetting info is available in the HC , RAK, and GAK  instructions.


** Shimming needles

If you don't have adjustable needs, you can get the same results by using shims.  Shimming the needle consists of adding #4 washers on each of the needles between the needle seat ( the black plastic thing) and the metal E clip. The T on the side of the stock needle is equal to the 4th notch on adjustable needles.


*** Check picture below for pipe configuration

Design Diagram of Stock pipes

 


Carb Screws

(info provided by Raymu)

On the float bowl side...
6 each 4mm x 12mm (no bracket)
2 each 4mm x 14mm (with bracket)

On the needle side...
2 each 4mm x 14mm (bracket - top & bottom)
3 each 4mm x 8mm (top side - where the choke lever is)
3 each 4mm x 10mm (bottom side)

Pitch is 0.7