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Title: Upper T, carb fitting
Post by: wingbolt on July 10, 2003, 05:46:37 PM

Can someone tell me what the upper T fitting between the carbs is used for?
I understand the bottom one is the fuel delivery.

Thanks

Title: Upper T, carb fitting
Post by: Rashad on July 10, 2003, 06:09:05 PM

Nothing. Unless your a CA model, just hook it up to a breather hose i believe

Title: Upper T, carb fitting
Post by: KevinC on July 10, 2003, 07:20:51 PM

The top one is for atmospheric pressure to the float bowls, and to balance the pressure between the two float bowls.

Moving air has lower pressure, so without a reasonably calm place to measure the atmospheric pressure from, the top of the fuel in the float bowls would see a fluctuating pressure, and you would get fluctuating flow through all the fuel jets. Crosswinds and such could cause unwanted jetting changes.

So the tube from that T goes down into a relatively stagnant area, and makes sure that both float bowls see the same pressure.

Title: Upper T, carb fitting
Post by: Kerry on July 10, 2003, 08:28:42 PM

Thanks for the post, Kevin. Something that I never even thought/wondered about before now makes perfect sense...!

Title: Upper T, carb fitting
Post by: wingbolt on July 10, 2003, 09:51:47 PM

Thanks for the info!

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Main Area => General GS500 Discussion => Topic started by: wingbolt on July 10, 2003, 05:46:37 PM