what jet size for my ds for winter riding
#1
what jet size for my ds for winter riding
I have an 01 DS650 with a Ron woods CDI, Moose foam air filter, uncorked exhaust with a bigger tip on end,17 tooth front sprocket. What jet size should I use. I just orderd a dynojet kit and it will be in wednesday so I'm just trying to get a head start so I can make this as fast and painless as possible. Thank you all for any info.
#2
what jet size for my ds for winter riding
Hightower/OMR Jetting
Here is some info for general jetting compensations.
Jetting rules of thumb for travel and/or seasonal changes
Compression Ratio Correction Formula:
CR at sea level - (Altitude / 1000 x 0.2)
Example for 9.7:1 piston (Stock)
9.7 - (3,000 / 1000 x 0.2) = 9:1
Stock DS runs well with 89 and above 3000 87 octane.
Main Jet Corrections, rules of thumb:
Altitude correction - drop one 5.0 increment (two jets-155 to 150) for every increase of 3000'
Temperature correction - increase one increment of 5.0 (two jets-150 to 155) for every 30 deg. drop
Humidity correction - increase one increment of 5.0 (two jets-150 to 155) for every 30% drop
Needle Adjustment - Example - If running in the 3rd notch from top, sea level,
When running above 5000ft - lower to 2nd notch or try 85 octane
Here is some info for general jetting compensations.
Jetting rules of thumb for travel and/or seasonal changes
Compression Ratio Correction Formula:
CR at sea level - (Altitude / 1000 x 0.2)
Example for 9.7:1 piston (Stock)
9.7 - (3,000 / 1000 x 0.2) = 9:1
Stock DS runs well with 89 and above 3000 87 octane.
Main Jet Corrections, rules of thumb:
Altitude correction - drop one 5.0 increment (two jets-155 to 150) for every increase of 3000'
Temperature correction - increase one increment of 5.0 (two jets-150 to 155) for every 30 deg. drop
Humidity correction - increase one increment of 5.0 (two jets-150 to 155) for every 30% drop
Needle Adjustment - Example - If running in the 3rd notch from top, sea level,
When running above 5000ft - lower to 2nd notch or try 85 octane
#3
#4
#5
what jet size for my ds for winter riding
As long as your changing the jetkit, check the size of your pilot jet. Sometimes the factory would install a #40. If it is, replace with a #45.
The DJ kit has a richer bottom and with the #45 turned out alittle more for winter - 2 1/2 turns, you should be all set.
The DJ kit has a richer bottom and with the #45 turned out alittle more for winter - 2 1/2 turns, you should be all set.
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