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Gas Yamaha Gas Yamaha Golf Cars; G1 through "The Drive" and U-Max Utility Vehicles |
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08-14-2018, 07:29 PM | #11 |
Sometime's............
Join Date: Oct 2007
Location: Tacoma Washington
Posts: 11,874
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Re: 1982 G1 J17 Information and upfitting Catalog
May not help your thread, but just a little info about 1982 J17's. Cylinder/ head/ reed assembly/ manifold/ carb/ oil pump/ muffler/ nut ring (cylinder to muffler attatchment)/ and engine mount bracket are all specific to 1982/J17 car's. I have used J10/J24 mufflers on J17 car's, but you need a J24 nut ring and cut and reweld the muffler support on the engine mount bracket. Are you going to add any power to a J17 going to a J anything else, not much. Have a good running engine, the governor turned up, zoom zoom. If it's not fast enough....might consider a "sled" motor.
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08-14-2018, 07:32 PM | #12 |
Getting Wild
Join Date: Aug 2018
Posts: 146
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Re: 1982 G1 J17 Information and upfitting Catalog
A valid response. The difference in power is probably only as noticeable as adding a CAI on a truck.
But when considering a full top end rebuild, you go through the “What if” scenarios. We’ll see what happens with these cranks seals this week. Fingers crossed they get the cart running properly. |
08-14-2018, 07:43 PM | #13 |
Sometime's............
Join Date: Oct 2007
Location: Tacoma Washington
Posts: 11,874
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Re: 1982 G1 J17 Information and upfitting Catalog
What was your base line compression check at wide open throttle?
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08-14-2018, 07:58 PM | #14 |
Getting Wild
Join Date: Aug 2018
Posts: 146
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Re: 1982 G1 J17 Information and upfitting Catalog
Didn’t do it at WOT - so I’ll have to retest. But came back at 105-110
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08-14-2018, 08:15 PM | #15 | |
Gone Wild
Join Date: Jan 2017
Location: venice
Posts: 1,807
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Re: 1982 G1 J17 Information and upfitting Catalog
Quote:
So would swapping the engine mount bracket and changing the nut ring make swapping the exhaust a bolt on deal? |
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08-15-2018, 12:31 PM | #16 |
Getting Wild
Join Date: Aug 2018
Posts: 146
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Re: 1982 G1 J17 Information and upfitting Catalog
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08-18-2018, 11:39 AM | #17 |
Getting Wild
Join Date: Aug 2018
Posts: 146
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Re: 1982 G1 J17 Information and upfitting Catalog
Mike asked I post some pics of the G17 exhaust. Mine is a late model G17 based on what I can tell. Here is the exhaust on and off (I cleaned it and was drying/cooking it for a bit on the gas grill. Not as effective as the camp fire.
Here is where it connects to the jug. There was NO gasket behind theee, but there is a recess for a crush metal gasket. The part number matches off of the snowmobile engine of the same year. Fit great and stopped the blow by Here is the exhaust removed It’s easy to take off again if anyone wants to see it from a specific angle. Or whatever let me know. I am debating calling up a custom exhaust shop and seeing what they could fab up. Mainly I just don’t like the exhaust dropping right under the passenger seat. Would rather see a rear exit, at least dump it out near the rear wheels |
08-18-2018, 02:02 PM | #18 |
Gone Wild
Join Date: Jan 2017
Location: venice
Posts: 1,807
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Re: 1982 G1 J17 Information and upfitting Catalog
my J17 exhaust with the butterfly valve. I may have a muffler shop make me a piece for the rusted part as the rest seems nice and solid
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08-30-2018, 03:06 PM | #19 |
Getting Wild
Join Date: Aug 2018
Posts: 146
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Re: 1982 G1 J17 Information and upfitting Catalog
What is the difference between the j17 and j10 head (if any) - and also, how much can you safely shave off of the head to bump compression?
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08-30-2018, 03:24 PM | #20 |
Gone Wild
Join Date: Jan 2017
Location: venice
Posts: 1,807
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Re: 1982 G1 J17 Information and upfitting Catalog
the head is the same but the jug is different. the ports of the J17 engine are smaller. Atleast the intake is smaller and the reed cage is also different.
I think I read on here somewhere you can shave the head .010 |
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