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Gas Yamaha Gas Yamaha Golf Cars; G1 through "The Drive" and U-Max Utility Vehicles |
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08-11-2015, 12:16 AM | #1 |
Not Yet Wild
Join Date: Apr 2015
Posts: 18
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1982 G1 power loss and loud exhaust
Hi All,
I recently rebuilt my G1 and although stumbling on a few hurdles along the way, it was running well, just loud. After talking to a bloke at the pub about it, he suggested trying to repack the motor with non-flammable wadding. I found some on ebay, cut a panel out of my muffler, packed all the voids with the material and welded it back together. After bolting the muffler back on, it was much quieter, but after about 5 holes of golf, it started to lose power badly and struggle to get up hills. I tried pulling the choke on thinking I'd blown a seal, but this made the power loss worst. 2 questions, 1- could the power loss be due to residual oil building up on the fabric and the exhaust struggling to breathe? 2- Is there any easy way to make a g1 quieter? |
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08-11-2015, 06:59 PM | #2 |
Gone Wild
Join Date: Oct 2010
Location: Pittsburgh Pa
Posts: 1,551
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Re: 1982 G1 power loss and loud exhaust
It's probably the exhaust. Two stroke mufflers are kind of tuned to the motor.
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08-18-2015, 03:00 AM | #3 |
Not Yet Wild
Join Date: Apr 2015
Posts: 18
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Re: 1982 G1 power loss and loud exhaust
So I cut the muffler apart and removed all the packing and went to a mates panel shop to weld it all back together. When I got there, he told me they had removed a Subaru WRX exhaust from a crashed car during the week and if I could make it fit, I could have it.
I cut the main pipe from the original and welded it to the new box, and then reduced the pipe size from some scraps laying around the workshop. The end result, a cooler running temperature, quieter and faster cart. It has taken my top speed from 12.7km/h to 19.5km/h. It's also stainless steel so I won't need to worry about rust! |
08-18-2015, 03:13 AM | #4 |
Over This Interview Is...
Join Date: Jun 2012
Location: AZ
Posts: 17,449
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Re: 1982 G1 power loss and loud exhaust
I like it, but the pipe pointed right at the clutch will hasten its demise, the belt as well.
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