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Old 11-18-2013, 08:56 PM   #1
CharlieFoxtrot
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Default 18HP Vanguard in Club Car XRT - slow! Help?

I've just put an 18hp Vanguard in a Club Car XRT950 that originally had a 13hp Vanguard. The new engine is NEW from air cleaner down. The old engine had about 5000 (yes 5000) hours. Everything is all stock. I'm not expecting a race car, this is still a work vehicle. But the engine at WOT seems to be just a little above idle and goes 9-10mph on my GPS. It runs great, just doesn't rev up or go fast. Pretty sure the old engine would do 15 mph.

When I take the air cleaner off and look down the carb while a helper pushes the pedal, the throttle blade opens all the way. Is this a governor thing? What do I do now?

Like I said, I don't need a race car. I'd like it to go just as fast as stock, while not having to work quite as hard.

Thanks!
kevin
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Old 11-18-2013, 10:19 PM   #2
CART-ZILLA
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Default Re: 18HP Vanguard in Club Car XRT - slow! Help?

sounds like you still have your governer still hooked up check out the sticy at the top of the page "gov removal on briggs 303447 " it will be the same as your engine's setup.... hope it helps
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Old 11-19-2013, 02:01 PM   #3
CharlieFoxtrot
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Default Re: 18HP Vanguard in Club Car XRT - slow! Help?

Why would the governor restrict me to near-idle speed? If it'd run to the usual stock speed (3650?), I'd be happy as a pig!
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Old 11-19-2013, 05:34 PM   #4
fstg21
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Default Re: 18HP Vanguard in Club Car XRT - slow! Help?

Check it with a tach or timing light.
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Old 11-19-2013, 06:02 PM   #5
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Default Re: 18HP Vanguard in Club Car XRT - slow! Help?

your doing more than idling going 9-10 mph..... the governer is set to specifacation and thats not always 3650 rpm.
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Old 11-19-2013, 09:48 PM   #6
CharlieFoxtrot
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Default Re: 18HP Vanguard in Club Car XRT - slow! Help?

Does anyone have a photo of the governor spring hookups? I sent my question to Al at Performance V-twins and he replied,

Quote:
Kevin,
Thank you for your inquiry. The governor has two major components......the mechanical fly-weight assy. which is mounted to the camshaft and the main spring, which is mounted to the external linkage. The sole purpose of the spring is to hold the throttle wide open.......the sole purpose of the mechanical fly-weight is to hold the throttle closed. The point where these two forces balance is the governed rpm. As the throttle linkage is moved towards wide open the linkage should start to stretch the spring adding more pressure to the governor arm. There is also a governed idle spring included on some of the V-twins. Make sure that the larger governor spring is connected to the governor arm on one end and the moveable belcrank on the other end. Since there is no force on the mechanical fly-weight when the engine is not running the throttle will open completely when moved to the fast position. It sounds like the main spring is not connected , is missing entirely, or the tab on the belcrank that the spring hooks to is not adjusted for higher rpm. To increase governed speed the moveable tang on the belcrank is bent to add more pressure to the main spring.
Hope this helps.
Al Hodge
Now I just have to figure out which is which. I bent a tab which put more tension on a spring and made the car go faster, but it also speeded up the idle. I think there's a spot that will give me about 12mph without messing up the idle, but I don't know if it's even the right spring... :o

thanks all
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Old 11-20-2013, 05:47 PM   #7
csason
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Default Re: 18HP Vanguard in Club Car XRT - slow! Help?

Its hard to tell on a forum a lot of times what is going on..

to me Vanguards are pretty unmistakable when they have adequate *rev* going on.. Have you watched or checked to make sure your belt is behaving
correctly, I had one rigged when I did my first big block, and I had the engine
going pretty fast I thought, but the cart wouldn't go.. I had the wrong belt setup ..etc.

After a while, you are going to want to dump that internal governor, and plug the hole, you may as well consider it now... It won't hurt the motor, you can easily adjust what you want then. The only prohibitive thing might be if a kid is going to be on it...In which case, big blocks aren't really the cart they need to be on.

I am just saying it is entirely possible to have one not engaging properly and the governor not playing along either, so you have to isolate one or the other.

If you're sure you're belt is right and engaging properly, governor setups are always best set by the book, and go from there. Seems like the Briggs manual has that in it if I recall correctly.

Hope that helps some.
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