Dynojet drill bits

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26 May 2006 15:13 #50318 by scottwes
Dynojet drill bits was created by scottwes
What size drill bits come with a dynojet kit for a kz550? I have 26mm TK carbs if that makes any difference. Thanks in advance.

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27 May 2006 06:58 #50422 by wiredgeorge
Replied by wiredgeorge on topic Dynojet drill bits
I think you will find that a 1/8" drill bit is used to poke a hole in the mixture screw cap. They also have you drill out the hole in the bottom of the slide for "throttle response" on CV carbs. This is an old Harley tuning trick and is essentially a major waste of time. The 1/8" drill bit cost you a bunch of money so you will probably want to drill something with it so drill out the plugs over the mixture screws. I think they also sold you a very expensive sheet metal screw to pop the plug out with if you bought the kit! bwhahaha

wiredgeorge Motorcycle Carburetors
Mico TX
www.wgcarbs.com
Too many bikes to list!

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27 May 2006 09:58 #50445 by scottwes
Replied by scottwes on topic Dynojet drill bits
Thanks for the information wiredgeorge. I am not going to buy the dynojet kit, instead I have ordered new main jets, and plan on shimming my needles. After that, all I need is the bit to drill out the plugs over the mixture screws, right? I take it that drilling out the hole on the bottom of the slides is useless?

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28 May 2006 17:07 #50652 by wiredgeorge
Replied by wiredgeorge on topic Dynojet drill bits
Very much a waste of time. Some folks claim it gives them better throttle response with CV carbs. I have done it and can't feel any difference in throttle response which is the time it takes for the bike to accelerate after the throttle is turned... Same folks will also stretch the return sprigs that push the slides down and then cut them a bit shorter so the slides will shut faster. That is a waste as well, imho.

wiredgeorge Motorcycle Carburetors
Mico TX
www.wgcarbs.com
Too many bikes to list!

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28 May 2006 19:06 #50674 by btchalice
Replied by btchalice on topic Dynojet drill bits
your opinion is anything but humble :ohmy: :ohmy: :woohoo:

Terry Meyer / Wichita KS
76 kz900 w/1000 motor TWZTD
I am not driving too fast, I'm flying too low.

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