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Big Block Talk! Everything about swapping a big block engine into your cart! |
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#11 | |
Searching for The Way
![]() ![]() Join Date: Oct 2009
Location: Medina, Ohio (NEOHIO)
Posts: 11,700
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#12 | |
Not Yet Wild
![]() Join Date: Jan 2021
Location: Columbia, SC
Posts: 36
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With CVTech clutch use 3⁄8 x 24tpi x 4” Clutch Bolt That's from the Vegas Carts installation manual. |
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#13 | |
Not Yet Wild
![]() Join Date: May 2024
Location: Gallatin, TN
Posts: 33
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#14 | |
Searching for The Way
![]() ![]() Join Date: Oct 2009
Location: Medina, Ohio (NEOHIO)
Posts: 11,700
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Back the screw out about 1.5 turns as a baseline, sometimes it takes 2 full turns. That will get you started. Adjust out (unscrew) to increase fuel ratio. Adjust in to decrease fuel ratio. I did one side at a time, but together, if that makes sense. So adjust one circuit, use the thermometer, take note of the temp, then match the other to it. You'll need to be a good listener and know what a properly adjusted engine sounds like. If you don't have that experience, you'll have to do your best. This Vtwin engine is capable of idling very smoothly with no shaking. Keep in mind this is all done at idle. Try and set your initial idle to 1000 rpm and then gradually back down to 800 if it will go. This is the critical part of getting this engine to work with a cvt setup for gear changes. |
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#15 |
Not Yet Wild
Join Date: Aug 2024
Posts: 11
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![]() I am having a bit of an issue with my 670. My idle RPM is about 4500. I have adjusted both the idle screw, as well as the two tapped screws with nothing making a difference. I cannot seem to get it to change idle RPM, except for when I hold the choke shut, which I can then get it to about 2250. Any suggestions? I did follow the Vegas Carts instructions for modifications, so keep that in mind.
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#16 | |
Searching for The Way
![]() ![]() Join Date: Oct 2009
Location: Medina, Ohio (NEOHIO)
Posts: 11,700
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It sounds like your throttle plate is open. Make sure the throttle plate is all the way closed, there is an ajustment screw on the linkage that will adjust that. At idle, the throttle plate needs to be 100% closed, there are small holes that allow "just enough" air to enter for idle. Then, adjust the idle air screws to factor setting, about 1.5 turns out as a base adjustment. Start it, warm it up, then adjust the idle air screws per my previous posts. Post some pics of your setup, throttle linkage, etc. |
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#17 | |
Not Yet Wild
Join Date: Aug 2024
Posts: 11
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#18 |
Searching for The Way
![]() ![]() Join Date: Oct 2009
Location: Medina, Ohio (NEOHIO)
Posts: 11,700
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