29mm smoothbore idle screw O-ring ?????

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29mm smoothbore idle screw O-ring ?????

15 Jun 2011 21:19
#457500
Does anyone know if the o-rings in the cycleorings.com VM will work on the 29 mm smoothbores idle mixture screws ? The kits are for VM's on Suzukis. If not does anyone know where I can buy a set ?
78-KZ1000/1105, 80 KZ1000, 82 Kawasaki GPZ750, 95 Harley Fatboy, 80 Suzuki GS1100ET, 81 GS1100E parts bike, 83 GS1100SD Katana/1394,78 Yamaha XT500, 81 Yamaha XS650, 78 Yamaha XS650E, 48 Whizzer model J motorbike, 71 Honda CT70H, 71 Honda CT70, 81 IT 250 Yamaha,82 Honda XL100S owned

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Re: 29mm smoothbore idle screw O-ring ?????

15 Jun 2011 21:53
#457509
1973 Z1
KZ900 LTD

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Re: 29mm smoothbore idle screw O-ring ?????

16 Jun 2011 13:57
#457613
Thank you, thats a big help. Do the smoothbores take the std Vm 26 & 28 mm main jets ?
78-KZ1000/1105, 80 KZ1000, 82 Kawasaki GPZ750, 95 Harley Fatboy, 80 Suzuki GS1100ET, 81 GS1100E parts bike, 83 GS1100SD Katana/1394,78 Yamaha XT500, 81 Yamaha XS650, 78 Yamaha XS650E, 48 Whizzer model J motorbike, 71 Honda CT70H, 71 Honda CT70, 81 IT 250 Yamaha,82 Honda XL100S owned

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Re: 29mm smoothbore idle screw O-ring ?????

16 Jun 2011 14:38
#457617
Yes, the main jets are the same, but pilots are a different style.
1978 KZ1000 A2 Click--->Build Thread
2004 ZX-10R
2007 Harley Sportster 1200
2020 Harley Street Glide Special
Angola, IN

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Re: 29mm smoothbore idle screw O-ring ?????

16 Jun 2011 17:33
#457632
Thanks, I made a Z1 Enterprises order today. Im going to drop from a 117.5 to a 115 because of the altitude here
78-KZ1000/1105, 80 KZ1000, 82 Kawasaki GPZ750, 95 Harley Fatboy, 80 Suzuki GS1100ET, 81 GS1100E parts bike, 83 GS1100SD Katana/1394,78 Yamaha XT500, 81 Yamaha XS650, 78 Yamaha XS650E, 48 Whizzer model J motorbike, 71 Honda CT70H, 71 Honda CT70, 81 IT 250 Yamaha,82 Honda XL100S owned

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Re: 29mm smoothbore idle screw O-ring ?????

16 Jun 2011 18:57 - 16 Jun 2011 19:01
#457643
mtkawboy wrote: Thanks, I made a Z1 Enterprises order today. Im going to drop from a 117.5 to a 115 because of the altitude here

Main jet affects the fuel mixture only at wide open throttle (or nearly wot).
Smaller main jet will produce leaner fuel mixture only at wide open throttle (or nearly wot).

The needle clip position affects fuel mixture during mid-range throttle positions, regardless of main jet size.

Running too rich at normal cruising speed, say during first 1/4 throttle position, could be caused by several different things, such as too high fuel level, clogged pilot air jet, dirty or blocked air filter, etc.

The "normal" main jet size is 120.

Good Fortune! :)
1973 Z1
KZ900 LTD
Last edit: 16 Jun 2011 19:01 by Patton.

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Re: 29mm smoothbore idle screw O-ring ?????

16 Jun 2011 19:10
#457646
The BS30-97 air jet is easy to overlook when cleaning a smoothbore carb, because it's so small and inconspicuous (unless known about).



An imperfectly clean BS30-97 air jet may alone cause an excessively rich mixture during the first 1/4 throttle position, regardless of an otherwise perfect carb.

Good Fortune! :)
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KZ900 LTD

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Re: 29mm smoothbore idle screw O-ring ?????

17 Jun 2011 16:16
#457815
I had a brown out on that last post, Im dropping the 17.5 pilots to 15s. I have to chek where the needle clips are unless I can find where I wrote it down. Old age is a biatch ! I did throughly clean the air jets, but thanks anyway. The pilot jets were just clogged from sitting too long. Too many bikes !
78-KZ1000/1105, 80 KZ1000, 82 Kawasaki GPZ750, 95 Harley Fatboy, 80 Suzuki GS1100ET, 81 GS1100E parts bike, 83 GS1100SD Katana/1394,78 Yamaha XT500, 81 Yamaha XS650, 78 Yamaha XS650E, 48 Whizzer model J motorbike, 71 Honda CT70H, 71 Honda CT70, 81 IT 250 Yamaha,82 Honda XL100S owned

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