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Old 07-03-2003, 01:20 AM   #1
Indy Year 25
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Default Float gauge

Anybody have a float gauge that you can drop down through the slot in the top of a q'jet? (See page 6C-23 in 1978 Service Manual)

Anybody know where I can get one? Or, if you have one, could you tell me exactely how far it is from the bottom to the zero mark. I think if I knew that dimension I could make one.

Appreciate it!
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Old 07-04-2003, 12:36 AM   #2
Indy Year 25
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Default Re: Float gauge (Indy Year 25)

Is this helpful? (Click picture to enlarge)



[Modified by Indy Year 25, 11:38 PM 7/3/2003]


[Modified by Indy Year 25, 11:39 PM 7/3/2003]
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Old 07-04-2003, 11:16 AM   #3
ROD NOCK
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Default Re: Float gauge (Indy Year 25)

Hey Indy-
I've got one. It's a Kent Moore No. J-9789-130. It's made of nylon.
Since I've no way to graphically show you, I'll discribe it the best I can.
Overall length is 3.2" and it's a graduated rectangle in basic shape. (similar to a large flat toothpick)
From the bottom to the center of the '0' marking is 1.5830"
Near the tip (before the taper) the widest section of the rectangle is .18", this is the max dimension that you would have to deal with in making the tip. The narrowest area (90deg from that) is .10". I assume they made it in a flat rectangle shape to allow printing of the dimensions on it. You could even make yours in a round shape with a flat on one side.
At the upper area where the printing exists, it's .25" X .13".
The one important considersation if you deside to construct your own is weight. It must be very light so no noticable weight is added to the float when using the tool. (there goes the custom alum billet idea :lol: )
And F.Y.I. - I used digital calipers to obtain these dim's.
Have fun and Good Luck -Rod :chevy

Oh yeah, I should mention that the dimensional graduations on the tool are in 32's of an inch on one side (running from 0 - 20) , and millimeters on the other (running from 0 - 18).


[Modified by ROD NOCK, 10:27 AM 7/4/2003]
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Old 07-04-2003, 12:11 PM   #4
Indy Year 25
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Default Re: Float gauge (ROD NOCK)

Rod, this is great! This is more than likely a one time use thing, so I am going to make one using the KISS (keep it simple stupid) method. Hey......that may be bubba's motto :rolleyes: ! Wait, I may be Bubba :bb .

I am going to make it from a piece of packaging material (blister pack). I will have to check that material in gas first, it will probably melt instantly, maybe a piece of milk carton?

I am thinking a .25x3.25 rectangle would work, but based on your description, I may have to make the part that goes into the carb narrower. I only need one mark on it..........at 2.052" (1.583+my setting of 15/32"). At least that way I can tell if it is high or low without tearing into the carb.

Thanks very much Rod!
Any other comment/suggestions would be greatly appreciated!
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Old 07-04-2003, 03:23 PM   #5
ROD NOCK
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Default Re: Float gauge (Indy Year 25)

Indy-
Watch the type of cardboard you use, as the thinner stuff might soak up gas, breakup and raise cain in the carb!
Maybe the milk carton thing will work, as it has a coating on it. I would use something with some rigidity to it. I like to lightly tap the gauge as it's in position on the float. This will ensure seating and give a mean reading.
My initial thought was something out of wood. A quick couple dips in some clear poly, etc.
You can measure the I.D. of the float bowl vent tube to help choose a larger diameter, be sure it fits loose.
For the price these suckers go for in a tool store, we could start making our own for less and sell on the web! :lol:
Always looking for that 'pot-'o-gold' under the rainbow! :lol: :blueangel: :lol:
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Old 07-04-2003, 04:23 PM   #6
Indy Year 25
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Default Re: Float gauge (ROD NOCK)

Quote:
Indy-
Watch the type of cardboard you use, as the thinner stuff might soak up gas, breakup and raise cain in the carb!
Quote:
Always looking for that 'pot-'o-gold' under the rainbow! :lol: :blueangel: :lol:
Rod, I was actually refering to the plastic package, I guess they are call clam shell packages. I got some vacuum tubing in one of those, it jumped out at me when I went out in the garage and looked around. I doubt that will last any time in gas.

Be careful what rainbows you look under!

Any Chemists out there with a good idea what household junk I could use that is thin, light weight, rigid, and resistent to gasoline
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Old 07-04-2003, 05:31 PM   #7
Indy Year 25
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Default Re: Float gauge (Indy Year 25)

I think the plastic package is going to work. I cut a piece off, and submersed it in gas for a half hour or so.............no degradation. :D

I will just cut it to size, score an line in it, fill the line with black paint, and I'm good to go!

Thanks for your help Rod. :auto: Race you to the patent office.
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