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Gas Yamaha Gas Yamaha Golf Cars; G1 through "The Drive" and U-Max Utility Vehicles |
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02-11-2019, 10:49 PM | #1 |
Not Yet Wild
Join Date: Oct 2017
Location: Beaumont, CA
Posts: 35
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G1 Top end worn out and rebuild
Compression was 60psi so i took the piston and cylinder off. There was definitely some blowby, and a lot of carbon build up in the exhaust. The cylinder has some small gouging from what looks like the end of one of the rings.
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02-15-2019, 02:17 PM | #2 |
Gone Wild
Join Date: Aug 2018
Location: Down under
Posts: 180
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Re: G1 Top end worn out and rebuild
Hi...I not long ago rebuilt my top end...My cylinder was worn 40 thou.I had the cylinder bored out and a new oversize piston and ring put in...I can't remember the oversize...It was the first one in a list of 4 oversizes you can get for the G1.
It was $100au for the rebore plus $88 for the piston rings bearing gaskets, so not all that expensive. Now its a completely different cart...More power than I'll ever need..Pulls a trailer with ease. |
02-16-2019, 02:08 PM | #3 |
Not Yet Wild
Join Date: Oct 2017
Location: Beaumont, CA
Posts: 35
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Re: G1 Top end worn out and rebuild
Update: I ordered a .25 over piston and ring set. when it arrived the rings were standard bore and the gaskets are missing. I emailed the company and they said they did not have the rings that i needed or the gasket kit so they returned my money. On top of that i can't find a machine shop that will bore the cylinder. The auto machine shop says they have no way of holding the cylinder and the motorcycle shop said they will not work on a golf cart. The golf cart shop says they send everything back east. So i honed the cylinder and installed the standard size new rings on the old piston. Waiting on A gasket kit and will check compression after that. Wish me luck.
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02-16-2019, 05:49 PM | #4 |
Gone Wild
Join Date: Oct 2010
Location: Pittsburgh Pa
Posts: 1,551
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Re: G1 Top end worn out and rebuild
Let us know how it works out. Should work. I'm not sure why people are boring theses cylinders when you can buy a complete top end kit for these around $225. ( DIY golf carts )That includes a NEW cylinder, piston, rings, wrist pin/clips and all the gaskets needed for the job. No searching for a shop to bore an old cylinder.
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02-16-2019, 09:19 PM | #5 |
Gone Wild
Join Date: Aug 2018
Location: Down under
Posts: 180
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Re: G1 Top end worn out and rebuild
Here is a new top end on Ebay...$405....DIY the go at $225 thats for sure...They never had it stock when I enquired.
https://www.ebay.com.au/itm/Yamaha-G...yeH:rk:22:pf:0 The Aussie seller here wanted over $600 just for the cylinder...They rip you off down here the so and so's. |
02-17-2019, 09:28 AM | #6 | |
Gone Wild
Join Date: Jan 2017
Location: venice
Posts: 1,807
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Re: G1 Top end worn out and rebuild
Quote:
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02-17-2019, 12:52 PM | #7 |
Gone Wild
Join Date: Jun 2012
Location: Spicewood, TX
Posts: 219
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Re: G1 Top end worn out and rebuild
I went the same route when I bought one that wouldn't run. (thread here: http://www.buggiesgonewild.com/gas-y...1-experts.html)
If you're thinking of the $225+ route, don't! Plowman's has a $249 G1 top end kit that's a much better option. here: G1 Top End Kit BTW, I would be wary of the "Nivel" brand on Ebay. It's been discussed here frequently, and I am pretty sure Plowman's is the way to go if you are going to spend over $200. Ogre |
02-17-2019, 10:52 PM | #8 | |
Gone Wild
Join Date: Jan 2017
Location: venice
Posts: 1,807
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Re: G1 Top end worn out and rebuild
Quote:
The plowmans route would be what I would do if looking for a complete top end. |
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