02-20-2012, 04:28 PM | #1 |
Not Yet Wild
Join Date: Feb 2012
Posts: 18
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wanting to install gx390 in my yamaha g2
Im getting ready to install a gx390 in my yamaha g2. I have the engine it runs great and was free. Need some hints or tricks you guys may have.
Its currently a recoil start engine. Ive found the electric starter and charging conversion kit for this engine and I intend on using it. My biggest question is the clutch, Ive read about an adapter to put on the crankshaft so that I can use my existing clutch. Does it work? Will my existing clutch allow the gx390 to idle? If not I need some recommendations. Im a mechanic and can weld and fabricate so changing things arent an issue. This will be going in a Yamaha G2 its not used on the course and im not building it for performance. The cart is used by my parents to get around on the farm, My dad has MS and dosent walk well. with the honda engine being able to idle when stopped this will save me alot of battery maintenance and starter rebuilding lol. Any and all input will be greatly appreciated thanks in advance |
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02-20-2012, 04:39 PM | #2 | |
Not Yet Wild
Join Date: Oct 2010
Posts: 65
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Re: wanting to install gx390 in my yamaha g2
Quote:
edit: i dont know why i had such a hard time finding it last time as i found it almost immediatly this time. http://www.cartpartsplus.com/tapered...h-adapter.html |
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02-20-2012, 04:47 PM | #3 |
Not Yet Wild
Join Date: Feb 2012
Posts: 18
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Re: wanting to install gx390 in my yamaha g2
I was almost sure that it wasnt going to let it idle. And yes the honda engine like the clones has the compression release. Dont want to do away with that seems to hurt the starters feelings a little lol. Seen it done before. Anyway you gave me the answer I was looking for I definitely need a clutch with the idle bushing. Not gonna take one of my polaris rzr though lol. I wasnt sure if carts had them or not. Thanks for the reply Right now im rounding up all the info and parts. Looks like I need to go visit COMET about a clutch. I didnt want to kind of a pricy thing but that is what I need. And they make it to fit the honda gx390.
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02-20-2012, 05:09 PM | #4 |
Not Yet Wild
Join Date: Feb 2012
Posts: 18
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Re: wanting to install gx390 in my yamaha g2
Here is where Im looking at a driver clutch. Seems to be the right thing to do.http://www.gokartsupply.com/asymapp.htm
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02-20-2012, 05:12 PM | #5 |
Not Yet Wild
Join Date: Feb 2012
Posts: 18
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Re: wanting to install gx390 in my yamaha g2
OOPs copied the wrong link that is for an asymetric clutch but it gets ya in the right place lol click symetric 40 44 series
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02-20-2012, 09:46 PM | #6 | |
Not Yet Wild
Join Date: Oct 2010
Posts: 65
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Re: wanting to install gx390 in my yamaha g2
Quote:
edit: here it is.... it doesnt get interesting until about halfway down the first page but it gives you some insight on the "quality" of cloned clutch parts. my point is its much safer to buy from a reputable dealer(speaking completely unbiased). http://www.diygokarts.com/vb/showthread.php?t=9513 |
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02-21-2012, 07:46 AM | #7 |
Not Yet Wild
Join Date: Feb 2012
Posts: 18
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Re: wanting to install gx390 in my yamaha g2
Yes I believe your correct. I think I will have to replace the driven clutch as well due to belt width. From what I understand the comet belts arent as wide as the yamaha Im still researching and looking for clutch options. You mentioned running your belt looser,,,May be a difference in our clutches but my belt has alot of slack in it from being worn and it still engages with simple cranking. Yes I no what you mean about the cloned parts and thanks for the thread post. I was lucky enough to have this HONDA engine laying around and still in perfect running order its off a pressure washer lol. Im a believer in research and doing a job once so that it lasts. When I fix something I do it right dont want to keep repairing. Thats why I started this thread, to get input from more experienced people than myself.
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02-21-2012, 06:43 PM | #8 |
Not Yet Wild
Join Date: Oct 2010
Posts: 65
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Re: wanting to install gx390 in my yamaha g2
yes but i feel i need to clear something up here. when i was talking about clones i was talking specifically about clutches. while the hondas are without a doubt better quality i happen to think that the clones are decently built.
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02-21-2012, 07:32 PM | #9 |
Not Yet Wild
Join Date: Feb 2012
Posts: 18
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Re: wanting to install gx390 in my yamaha g2
Oh I agree completely. Nothing against clones at all.
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02-22-2012, 09:30 AM | #10 |
Gone Wild
Join Date: Jun 2011
Location: Kingston Springs Tn.
Posts: 874
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Re: wanting to install gx390 in my yamaha g2
if u put the 200 rpm spring in the stock clutch it will allow the engine to idle ok ...tom at cpp put one in my club car clutch and it was the best thing ive done to it so far ...it also seems to help going up the hills
mike |
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