Topic: Dynojet or bust?

[1981cb650c]

I am thinking of running a free flowing exhaust and pod filters or a K&N. I searched for info, found lots on the jetting theory. But what are the advantages to using a $125 dynojet kit? I have an '81 650, CV carbs with no adjustments possible except the pilot. Now, the Dynojet kit for my bike has two sizes of mains (stage 1 - 110, stage 3 - 116) and an adjustable fuel needle setup. I am already running 118's and have 8 120 spares. Stock for this bike was 120! What does raising the needle height do and could I not just shim it as this is essentially all Dynojet is doing? How much throttle responce do you gain drilling out the lift holes? I have two other sets of carbs for parts (8 in total). These carbs are so simple I cant see the kits being worth $125 when all I need is a small drill bit and some washers? Is the price $100 for the Dynojet name and $25 for parts? Any thoughts?

Parts list:
4 Main Jets DJ110
4 Main Jets DJ116
1 Slide Drill DD #14
4 Fuel Needles DNO117
8 Adjusting Washers DW0001
4 E-Clips DE0001
1 Plug Drill DD #5/32
1 Screw DS0001

http://www.dynojet.com/pdf/1131.pdf

[snyquist53]

i always thought that was a rip off too, but it who the wants to spend the time tuning cv carbs.  the price is a bit steep for the amount of hardware you recieve but the knowledge behind it is what you really have to pay for.  it sucks. i can tune a carb alright but i ain't no vacuum savy carb master.  i feel like i'm back in school trying to research all the carb tuning attributes