72 Suzuki T500J - Carb Bowl Overflow Tubes?

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Syd
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Suzuki 2-Strokes: 72 T500J, 72 Kaw H1-B, 71 CB750 K1, 67 A7SS

72 Suzuki T500J - Carb Bowl Overflow Tubes?

Post by Syd »

Hello - I am presently working of a 1972 Suzuki 500J and I noticed that the two carb bowls do not have overflow tubes - is this correct for this model T500?
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jabcb
Moto GP
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Re: 72 Suzuki T500J - Carb Bowl Overflow Tubes?

Post by jabcb »

Early T500s have internally-vented carbs & later models have float-bowl-vented carbs.

Fuel flow through the jets is driven by the pressure drop between the float bowl & carb venturi. So early & late carbs have very different jetting.

Carb specs for 71-75 models are in service bulletin Specification-6: http://www.ozebook.com/compendium/techb ... %206-9.pdf
73-75 models have the vented float bowls & 97.5 main jets.
71-72 models have internal venting & 150 main jets.
BAS (Bike Acquisition Syndrome) - too many bikes but have room for more

Suzuki:
GT750 2x75
GT550 72 & 75
GT380 72
T500 69 project & 73 project
T350 69 & 71
Honda 85 CB650SC & 86 CB700SC
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Syd
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Posts: 215
Joined: Tue Aug 02, 2011 8:25 pm
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Suzuki 2-Strokes: 72 T500J, 72 Kaw H1-B, 71 CB750 K1, 67 A7SS

Re: 72 Suzuki T500J - Carb Bowl Overflow Tubes?

Post by Syd »

Thanks for the info jabcd
Syd
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Posts: 215
Joined: Tue Aug 02, 2011 8:25 pm
Country: New Zealand
Suzuki 2-Strokes: 72 T500J, 72 Kaw H1-B, 71 CB750 K1, 67 A7SS

Re: 72 Suzuki T500J - Carb Bowl Overflow Tubes?

Post by Syd »

Quick question - so with internal venting, where does the fuel go to when the bowl is full and/or when the float valve is not sealing correctly etc?
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ConnerVT
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Re: 72 Suzuki T500J - Carb Bowl Overflow Tubes?

Post by ConnerVT »

Wherever it wants.

It will go like any fluid - following the lowest path it can find. I had the wrong float bowl needles installed in my T500, and ended up needing to drain my crankcase with a unhappy wife complaining about the strong gasoline smell in the garage.
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