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Gas Yamaha Gas Yamaha Golf Cars; G1 through "The Drive" and U-Max Utility Vehicles |
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12-21-2012, 06:30 PM | #11 |
Not Yet Wild
Join Date: Nov 2012
Posts: 7
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Re: G1 Primary Clutch Spring...where do I get one?
Governor is long gone already.
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12-22-2012, 01:38 PM | #12 | |
Searching for The Way
Join Date: Oct 2009
Location: Medina, Ohio (NEOHIO)
Posts: 11,421
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Re: G1 Primary Clutch Spring...where do I get one?
Quote:
Check your compression warm, should be over 100# up to 120#. Check the seals, if they look wet in that area you might need to replace. Check the fuel delivery, could be fuel pump? Check the air intake area for leaks, could be getting too much air. Check the spark plug and coil for good clean white-ish blue spark. Take stock carb and give it a good soak in hot soapy water and tooth brush it good. Clean the bowl out. Shake water out and use a hair dryer to blow dry, not compressed air. |
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12-22-2012, 01:43 PM | #13 |
Vegas modded 420
Join Date: Jun 2009
Location: West MI
Posts: 15,433
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Re: G1 Primary Clutch Spring...where do I get one?
Something is wrong with that cart, though if you put all those parts on there it would take some tuning to get it running right. The G2/9 clutch has no spring, best you can do is get a new belt or the hd kevlar belt that is wider and them make sure the engine is moved away from the trans enough to get it tight without the cart creeping much. That will give a higher rpm takeoff though not really in the performance range. The G2 engine is ported to make power at low rpm (stock) and will spin the tires no problem on grass/dirt if running properly. Check the reeds and piston, advance the timing a little, cut the head for more compression, all that will help and make sure the topend is not tired.
They don't have much top end power but being a 2 stroke they will rev forever it is not uncommon to get a good running stock cart (stock tires) to run 30mph eventually it just takes a while to get there. You can put in a 250 bravo/enticer engine and its clutch. You can put an aftermarket clutch on it to tune to more rpm. Not much you can do with the g9 clutch...you can drill a hole in each weight and get a little more rpm. The issue with the clutch is it shifts, if it is not shifting the rpm will go up/down with speed....if it is working the rpm will stay the same up to 15mph or something. Once it shifts all the way then the rpm will climb high because its stuck in high gear. That will happen at 15mph stock and 20+ with 22 inch tires or someplace around there. If you look the belt will be at the top of the primary. But you can only do that on a G1 on jackstands, so better to mark the sheaves and see where the belt wears the marker off (how high/low in the clutch the belt ran). If you lose power from the cvt it is because the engine is at the wrong rpm, it is not shifting properly. You have to find out if its the engine or the cvt causing the issue....the cvt just deals with the power it sees when working properly. Also lube the clutches center shafts. The clutches also react to engine power, so if the engine is not making power they don't do much. Make sure you are getting full carb opening from the pedal. |
12-28-2012, 01:22 PM | #14 |
Not Yet Wild
Join Date: Nov 2012
Posts: 7
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Re: G1 Primary Clutch Spring...where do I get one?
So I finally got some time to work on the cart yesterday. Come to find out the Exhaust butterfly was wired in the closed position. So I removed it entirely, and it improved the sound and performance but I'm thinking I may need to install a bigger pilot jet (has a 100 in it now) I tried a 95 and it definitely ran worse. It runs better but I still don't think it's 100%. It might do 15mph on the street.
If I jack up the rear of the cart to where it's not under any load, the cart will rev to the moon and screams! Sounds great. But under a load it never seems to rev. The carb intake boot is good and the reeds are good too. I'm thinking its a fuel issue at this point. Anyone who has done a carb swap, what jet sizes are you running???? |
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