late model 29mm smoothbores

  • toad
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late model 29mm smoothbores

06 May 2011 01:55 - 21 May 2011 08:06
#449161
can anyone tell me the difference between early and late model 29mm smoothbores .jetting advice specified 20 pilot or 25 pilot for late model .How can I tell which model I have?
78 kz 1000
wiesco 1015
29mm smoothbores
gs1100 swingarm
gsxr rear
Last edit: 21 May 2011 08:06 by toad.

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Re: late model 29mm smoothbores

21 May 2011 08:09
#452528
does anybody know?
thanks
78 kz 1000
wiesco 1015
29mm smoothbores
gs1100 swingarm
gsxr rear

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  • peter1958
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Re: late model 29mm smoothbores

21 May 2011 08:42
#452531
29mm smoothbores Z1 / KZ900 / KZ1000
Main Jet 120
Air Jet 0.9
Needle Jet O-6
Jet Needle 5DL31-3
Throttle valve (slide) 1.5mm cutaway
Pilot Jet 17.5 or 20.0 (or 25 in the later versions)
Air Screw setting 1 1/2 turns out

29mm smoothbores CB750
Main Jet 115
Air Jet 0.9
Needle Jet O-6
Jet Needle 5DL31-3
Throttle valve (slide) 1.5mm cutaway
Pilot Jet 17.5 or 20.0 (or 25 in the later versions)
Air Screw setting 1 1/2 turns out

29mm smoothbores KZ650
Main Jet 105
Air Jet 0.9
Needle Jet O-4
Jet Needle 5DL31-3
Throttle valve (slide) 1.5mm cutaway
Pilot Jet 15
Air Screw setting 1 1/2 turns out













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Re: late model 29mm smoothbores

21 May 2011 08:44
#452532
www.z1enterprises.com/reference/z1-carb-guide.aspx
www.kzzone.com/ cavanaughracing.com/kzdata.html www.mtceng.com/index.php/us-dealers/44-f...-performance-orlando

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Re: late model 29mm smoothbores

23 May 2011 09:24
#452981
do you see where it says in brackets (or 25 in the later versions) that is what I am trying to explain; appreciate the feedback likewise.
78 kz 1000
wiesco 1015
29mm smoothbores
gs1100 swingarm
gsxr rear

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  • testarossa
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Re: late model 29mm smoothbores

23 May 2011 09:43
#452983
Toad, what that is referring to is just the pilot jet size. I'm not sure if there is any difference in the actual carburetor body in later versions. I only have one set myself. The pilot jets can be swapped out to suit your setup. Are you trying to determine what pilot jets should be in the carbs as stock or are you just trying to jet for your particular bike? Personally, #25 pilot jets seem awfully large for a regular KZ1000 motor. I live at sea level in Houston, and I need either a #15 or #17.5 for my setup to run right. Verified AFR with wideband O2 sensor for accuracy. I am running the #15s right now, but could probably use the #17.5s during winter when it's cooler.
1978 KZ1000 A2 Click--->Build Thread
2004 ZX-10R
2007 Harley Sportster 1200
2020 Harley Street Glide Special
Angola, IN

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  • mtkawboy
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Re: late model 29mm smoothbores

23 May 2011 19:28
#453085
I use the 20s on a built 1105
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: late model 29mm smoothbores

26 May 2011 09:23
#453683
thanks I will try a set of 117.5 and see if that helps!
78 kz 1000
wiesco 1015
29mm smoothbores
gs1100 swingarm
gsxr rear

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