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For those who wish to fabricate their own float height gauge

Fuel System: Gas (Petrol) tanks, Carburators
e3steve
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Post by e3steve » Thu Jun 30, 2011 6:13 pm

Good point, Brew; I had no idea that they were that different. It's not something that concerns me, as the motor was running so sweet & stable before the tear-apart and the plugs indicated pretty much perfect a/f mix.

Thanks for that. I may try some parts from the Keyster kits, upon rebuild.

LOUD MOUSE
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Re: float gauge

Post by LOUD MOUSE » Thu Jun 30, 2011 7:29 pm

????????????????????????. ............lm


brewsky wrote:
e3steve wrote:
jleewebb wrote:to be perfectly clear, this is with tang just touching the springy part of needle valve, not with spring compressed, right?

Looks like more of the jet holder is showing here than with the LM eyeball method, but this might just be from angle of pic.

Thanks Steve! --Lee
On the money with that, Lee.

Yes, my jet holder (OE Keihin) is substantially taller than that which is required for Ed's 'line of sight' measurement. And the needlejet that you see is protruding because it's of the ISOmetric threaded variety, whereas the jet holder is JIS-threaded. Not my doing -- it's how I bought the carbs (and didn't notice!)
Steve, could it be that you have a CA or CL jet holder instead of CB? They show different part #'s, but I'm not sure if there is a difference in length......which might explain the line of sight method not agreeing with the guage setting?

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brewsky
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Post by brewsky » Thu Jun 30, 2011 8:05 pm

e3steve wrote:Good point, Brew; I had no idea that they were that different. It's not something that concerns me, as the motor was running so sweet & stable before the tear-apart and the plugs indicated pretty much perfect a/f mix.

Thanks for that. I may try some parts from the Keyster kits, upon rebuild.
Don't know that there IS any difference or not, just threw it out as a question.
If some parts have been substituted, then others may have also...ie float valve assy, float itself, etc.
I didn't think the Keyster kits had jet holders included anyway.
66 dream, 78 cb750k, 02fz1, 09 wing

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brewsky
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Post by brewsky » Sun Jul 03, 2011 6:24 pm

Here's a shot showing the measurement of a CA (PW22) Main Jet Holder for reference:
Since I don't have a PW26 carb to compare.....
Attachments
CA77 Main Jet Holder.JPG
66 dream, 78 cb750k, 02fz1, 09 wing

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brewsky
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Post by brewsky » Sun Jul 03, 2011 7:27 pm

Interesting that IF you measure the PW22 float height (26.5mm) from the carb body recess (not gasket surface)....as Steve's float gauge shows, the float lines up with the main jet holder (jet removed), as with LM's method for PW26's.

COINCIDENCE? Or does this mean the height should be measured from the recess, rather than the gasket surface?
Attachments
Gasket Surface.Cutout.Recess Measurement.JPG
LOS PW22 Float Measurement.JPG
66 dream, 78 cb750k, 02fz1, 09 wing

johnjoseph1
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throttle cable placement ca72

Post by johnjoseph1 » Tue Jun 26, 2012 11:32 pm

Can some one tell me the correct routing of carb cable.
Is it 1st hole closet to forks or second hole on the frame under gas tank?
Its a ca 72. Thanks

johnjoseph1
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throttle cable placement ca72

Post by johnjoseph1 » Tue Jun 26, 2012 11:36 pm

Can some one tell me the correct routing of carb cable.
Is it 1st hole closet to forks or second hole on the frame under gas tank?
Its a ca 72. Thanks

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