1984 Gas Ez-go engine swap?

Haddixbros · 07-25-2019, 10:51 AM

Hey guys, I recently bought a 1984 ezgo marathon as a "fix it up" project. I have little to no experience with golf carts, but Im learning quickly. I was wondering what your thoughts were on trying to swap the 9 hp 2-cyle robin engine ( robin ec25-2pg)for a BIGGER engine (I was looking at the vrx625?). The only thing I want is to keep is the ability to go in reverse. And more hp of course. Any thoughts or recommendations on what engine I should use? Does it HAVE to be a 2 cyle engine that goes back in?

Dabble Inn · 07-25-2019, 11:03 AM

If you go with that engine you would need a differential from a 91 or newer to have reverse

Haddixbros · 08-15-2019, 05:38 PM

So what options are there for upgrading the engine? Is there anyone that makes a good 2 stroke motor with more than 9 hp?

CP241 · 08-15-2019, 05:48 PM

I'm pretty sure for ANY engine swap youd need a 91+ rear axle. I believe your motor mounts sideways.

If your current engine is in decent operating condition, youd be better off running the throttle cable straight to the carb to bypass the governor, and maybe refresh your engine. A new top end, mill the head down a little bit for a compression bump, and some port work it will run circles around most 4 stroke engines you could swap in.

cart around · 08-15-2019, 06:44 PM

What's the end goal?

CP241 · 08-15-2019, 08:41 PM

Quote:

Originally Posted by cart around

What's the end goal?

I'll answer for him.

A busa engine swap

raydhd · 08-15-2019, 09:04 PM

Some people here swapped in single cylinder snowmobile engine in and got them running with forward and reverse BUT a high degree of thought and fab work went into these swaps. Dig around the sled section for info on the particulars.

Haddixbros · 08-16-2019, 12:43 PM

The end goal is to have a cart that is so fast its goofy. Id like to go at least 25 mph. I dont care to do fab work. Ive got metal work tools for days. And a great supply of steel. I just want to do order as few larts as possible. I think a transaxle would be INSANELY expensive. So im try to save costs. I dont care to shell put cash for a motor though, as I could always swap that to another cart

07-25-2019, 10:51 AM	#1
Haddixbros Not Yet Wild Join Date: Jul 2019 Posts: 64	1984 Gas Ez-go engine swap? Hey guys, I recently bought a 1984 ezgo marathon as a "fix it up" project. I have little to no experience with golf carts, but Im learning quickly. I was wondering what your thoughts were on trying to swap the 9 hp 2-cyle robin engine ( robin ec25-2pg)for a BIGGER engine (I was looking at the vrx625?). The only thing I want is to keep is the ability to go in reverse. And more hp of course. Any thoughts or recommendations on what engine I should use? Does it HAVE to be a 2 cyle engine that goes back in?
Haddixbros Not Yet Wild Join Date: Jul 2019 Posts: 64

07-25-2019, 11:03 AM	#2
Dabble Inn Nincompoop Club Member Join Date: Jun 2016 Location: Idaho Posts: 1,178	Re: 1984 Gas Ez-go engine swap? If you go with that engine you would need a differential from a 91 or newer to have reverse

08-15-2019, 05:38 PM	#3
Haddixbros Not Yet Wild Join Date: Jul 2019 Posts: 64	Re: 1984 Gas Ez-go engine swap? So what options are there for upgrading the engine? Is there anyone that makes a good 2 stroke motor with more than 9 hp?
Haddixbros Not Yet Wild Join Date: Jul 2019 Posts: 64

08-15-2019, 05:48 PM	#4
CP241 Nincompoop village idiot Join Date: Apr 2018 Location: Michigan Posts: 9,666	Re: 1984 Gas Ez-go engine swap? I'm pretty sure for ANY engine swap youd need a 91+ rear axle. I believe your motor mounts sideways. If your current engine is in decent operating condition, youd be better off running the throttle cable straight to the carb to bypass the governor, and maybe refresh your engine. A new top end, mill the head down a little bit for a compression bump, and some port work it will run circles around most 4 stroke engines you could swap in.

08-15-2019, 06:44 PM	#5
cart around Test before replacing Join Date: Aug 2013 Location: Ohio side of the Pennsylvania border. Posts: 3,495	Re: 1984 Gas Ez-go engine swap? What's the end goal?

Today
BGW	Sponsored Links __________________ This advertising will not be shown in this way to registered members. Register your free account today and become a member on Buggies Gone Wild Golf Cart Forum

08-15-2019, 09:04 PM	#7
raydhd VC 460 CLONE GONE WILD Join Date: Oct 2014 Location: Ray BY The Bay NJ Posts: 10,628	Re: 1984 Gas Ez-go engine swap? Some people here swapped in single cylinder snowmobile engine in and got them running with forward and reverse BUT a high degree of thought and fab work went into these swaps. Dig around the sled section for info on the particulars.

08-16-2019, 12:43 PM	#8
Haddixbros Not Yet Wild Join Date: Jul 2019 Posts: 64	Re: 1984 Gas Ez-go engine swap? The end goal is to have a cart that is so fast its goofy. Id like to go at least 25 mph. I dont care to do fab work. Ive got metal work tools for days. And a great supply of steel. I just want to do order as few larts as possible. I think a transaxle would be INSANELY expensive. So im try to save costs. I dont care to shell put cash for a motor though, as I could always swap that to another cart
Haddixbros Not Yet Wild Join Date: Jul 2019 Posts: 64

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Forum
1984 2 cycle engine engine diagram?	Gas EZGO
1984 ezgo marathon engine replacement to atv engine	Gas EZGO
1984 Harley with LMB234 swap for a tillotson?	Gas Harley Davidson
1984 rear swap ??	Electric Club Car
1984 ezgo, 340cc suzuki sled swap	Gas EZGO