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| Gas Yamaha Gas Yamaha Golf Cars; G1 through "The Drive" and U-Max Utility Vehicles |
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10-01-2018, 07:01 PM
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#1 |
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Gone Wild
Join Date: Mar 2018
Location: The Desert
Posts: 248
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G1 air chamber/boost bottle
Going to swap a J10 cylinder,intake,carburetor and exhaust on to a J17 block. I looked into the nipple on the intake boot and saw it was for an air chamber. I found an air chamber and the charge tube that goes with it however there is no nipple on my crank case to hook it into. Do I need to run the air chamber or can I cap off the nipple on the intake boot. Is it really necessary to use it? I know how and why they were used. I dont want to buy it if I cant use it. Is there any other way I can use it with my crank case? Thoughts? Thanks.
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10-01-2018, 07:35 PM
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#2 |
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Sometime's............
 Join Date: Oct 2007
Location: Tacoma Washington
Posts: 11,874
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Re: G1 air chamber/boost bottle
Cap it off...you'll be good to go
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10-01-2018, 08:04 PM
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#3 |
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Gone Wild
Join Date: Mar 2018
Location: The Desert
Posts: 248
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Re: G1 air chamber/boost bottle
Will do. Thank you!!!
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10-02-2018, 08:36 AM
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#4 | |
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Gone Wild
Join Date: Jan 2017
Location: venice
Posts: 1,807
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Re: G1 air chamber/boost bottle
Quote:
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10-02-2018, 09:26 AM
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#5 |
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Gone Wild
Join Date: Mar 2018
Location: The Desert
Posts: 248
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Re: G1 air chamber/boost bottle
Yamaha came out with its YEIS around 1980 and I think it was 1983 when they put it on our golf carts. It helps with low speed power as power drops off right before the engines powerband begins. When air travels through the carb and the reed closes the air behind it stacks up. The boost bottle captures that air/fuel and releases it back into the intake tract when there is low pressure when the reed opens again giving the engine a boost. They are not useful at higher rpm. What threw me off is the second line that goes to the crankcase next to the fuel pump pulse nipple. I have not seen another boost bottle with a second line. There is a lot more to it than that and there are some great articles on them that explains theory and operation much better than I can if you want to learn more about them. If I have missed anything please feel free to correct me.
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10-02-2018, 01:51 PM
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#6 |
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Gone Wild
Join Date: Jan 2017
Location: venice
Posts: 1,807
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Re: G1 air chamber/boost bottle
good stuff man. I googled it and did some light reading on it.
thank you |
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10-02-2018, 05:14 PM
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#7 | |
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Gone Wild
Join Date: Mar 2018
Location: The Desert
Posts: 248
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Re: G1 air chamber/boost bottle
Quote:
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10-04-2018, 12:31 AM
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#8 |
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Over This Interview Is...
Join Date: Jun 2012
Location: AZ
Posts: 17,449
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Re: G1 air chamber/boost bottle
Good read! I always figured it was for noise reduction. Those Yamaha engineers were a crafty bunch.
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