Is 40hp too much??

EatBeef · 01-05-2014, 10:21 PM

I have a Yamaha G2 that is lifted with 28" tires, I've been looking for a 16hp to 20hp motor to upgrade the failing stocker. My Dad, who designs and builds experimental airplanes, has a 40hp motor sitting on a shelf all sad and lonely. We've considered putting it in the cart but I feel it's too much power for the basically stock cart. If I let him twist my arm what items other then a drive clutch and brake upgrade will I need? Will the rearend hold up? Will the stock front suspension work or do I need an ATV or other higher speed front end? The cart runs out at 28mph now and I don't need any more speed but more torque would be nice. I'm not sure what RPM the motor is built for, can I add a spacer to the driven clutch that would limit how far it opens and limit the top speed if needed? 38hp is definitely overkill for what I need and I don't want a free motor to cost me more in the long run then buying a more properly sized motor. Any help is appreciated.

bokeasmowl · 01-05-2014, 10:59 PM

Yeah, that's too big. You should probably just sell it to me. Don't worry, I won't put it in my g9.

pachanga90 · 01-05-2014, 11:02 PM

rifter · 01-05-2014, 11:44 PM

Well I had 154 Horse Power,,,,,but it was a little much. But man was it fun!!!

Too much fun what's that mean, too much money there's no such thing

It's like a girl to pretty, with too much class

Being to lucky, a cart too fast

No matter what they say I've done

Well I ain't never had too much fun

crryallcrwler · 01-06-2014, 01:11 AM

40 hp is perfect alpha carts sells a 60 hp motor and they can hit every dune in glamis with it. Guess it depends what ur gonna use it for.

JcXtreme72 · 01-06-2014, 02:53 AM

I've got and had a few G2's. Right now I'm putting a Polaris engine in my personal one. I did once put a 80hp 2 stroke in a G2 and with 24" tires we didn't break anything. Go for it and post pics and vids.

dragos28 · 01-06-2014, 09:11 AM

DO IT!
that thing will be a beast!

93yellowclubcar · 01-06-2014, 11:00 AM

Go for it!

Remember, there's no such thing as too much horsepower, just components that are too weak to hold up to it.

You should be fine on a cart though, cart transaxles are tough.

scottyb · 01-06-2014, 11:41 AM

On the other hand is the argument for smaller motor. While 40 hp would be unique, and exhilarating, it may not be what you need for your cart.
You have to consider how you want to use your cart and what your performance goals are to select the motor that's best for you.
Just because something is available doesn't mean it's the best option.

I have 25 hp in one of my carts. It's it's all I need for off-road but, it is overkill for riding around the neighborhood and it sucks down a fair amount of fuel.

I'm just saying

JcXtreme72 · 01-06-2014, 01:29 PM

Scotty you shut your dirty lil mouth lol. Put the 40 in and if its too much dont floor it. Throttle control wins.

01-05-2014, 10:21 PM	#1
EatBeef Not Yet Wild Join Date: Jul 2011 Posts: 39	Is 40hp too much?? I have a Yamaha G2 that is lifted with 28" tires, I've been looking for a 16hp to 20hp motor to upgrade the failing stocker. My Dad, who designs and builds experimental airplanes, has a 40hp motor sitting on a shelf all sad and lonely. We've considered putting it in the cart but I feel it's too much power for the basically stock cart. If I let him twist my arm what items other then a drive clutch and brake upgrade will I need? Will the rearend hold up? Will the stock front suspension work or do I need an ATV or other higher speed front end? The cart runs out at 28mph now and I don't need any more speed but more torque would be nice. I'm not sure what RPM the motor is built for, can I add a spacer to the driven clutch that would limit how far it opens and limit the top speed if needed? 38hp is definitely overkill for what I need and I don't want a free motor to cost me more in the long run then buying a more properly sized motor. Any help is appreciated.
EatBeef Not Yet Wild Join Date: Jul 2011 Posts: 39

01-05-2014, 10:59 PM	#2
bokeasmowl friends call me Boke Join Date: Apr 2008 Location: Smithfield, North Carolina Posts: 7,772	Re: Is 40hp too much?? Yeah, that's too big. You should probably just sell it to me. Don't worry, I won't put it in my g9.

01-05-2014, 11:02 PM	#3
pachanga90 I Refuse To Get Stuck!!! Join Date: Jun 2010 Location: Hilton,NY Posts: 5,427	Re: Is 40hp too much??

01-05-2014, 11:44 PM	#4
rifter rifter Join Date: Nov 2007 Location: Orlando Florida Posts: 4,055	Re: Is 40hp too much?? Well I had 154 Horse Power,,,,,but it was a little much. But man was it fun!!! Too much fun what's that mean, too much money there's no such thing It's like a girl to pretty, with too much class Being to lucky, a cart too fast No matter what they say I've done Well I ain't never had too much fun

01-06-2014, 01:11 AM	#5
crryallcrwler Gone Wild Join Date: Jan 2012 Location: california Posts: 176	Re: Is 40hp too much?? 40 hp is perfect alpha carts sells a 60 hp motor and they can hit every dune in glamis with it. Guess it depends what ur gonna use it for.

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01-06-2014, 02:53 AM	#6
JcXtreme72 Gone Wild Join Date: Jan 2011 Location: Las Vegas, Nevada Posts: 1,942	Re: Is 40hp too much?? I've got and had a few G2's. Right now I'm putting a Polaris engine in my personal one. I did once put a 80hp 2 stroke in a G2 and with 24" tires we didn't break anything. Go for it and post pics and vids.

01-06-2014, 09:11 AM	#7
dragos28 Gone Wild Join Date: Oct 2013 Posts: 473	Re: Is 40hp too much?? DO IT! that thing will be a beast!
dragos28 Gone Wild Join Date: Oct 2013 Posts: 473

01-06-2014, 11:00 AM	#8
93yellowclubcar ΜΟΛΩΝ ΛΑΒΕ Join Date: Nov 2012 Location: West Virginia Posts: 4,094	Re: Is 40hp too much?? Go for it! Remember, there's no such thing as too much horsepower, just components that are too weak to hold up to it. You should be fine on a cart though, cart transaxles are tough.

01-06-2014, 11:41 AM	#9
scottyb Happy Carting Join Date: Dec 2007 Location: Southern California Posts: 73,419	Re: Is 40hp too much?? On the other hand is the argument for smaller motor. While 40 hp would be unique, and exhilarating, it may not be what you need for your cart. You have to consider how you want to use your cart and what your performance goals are to select the motor that's best for you. Just because something is available doesn't mean it's the best option. I have 25 hp in one of my carts. It's it's all I need for off-road but, it is overkill for riding around the neighborhood and it sucks down a fair amount of fuel. I'm just saying

01-06-2014, 01:29 PM	#10
JcXtreme72 Gone Wild Join Date: Jan 2011 Location: Las Vegas, Nevada Posts: 1,942	Re: Is 40hp too much?? Scotty you shut your dirty lil mouth lol. Put the 40 in and if its too much dont floor it. Throttle control wins.