New to me used Vanguard for my Marathon

56servi · 06-01-2009, 08:06 PM

I picked up a used 16 HP Vanguard today. Going to replace the Ski Doo engine in my EZ GO Marathon.

The engine came out of a carpet cleaning machine. The hour meter showed 3300 hours. It has a 1 in shaft so should work OK. It has been sitting for a few years in a mini storage unit.

The engine numbers are
Model 303447
Type 0375-01 1880
Code 94010611 (Made in 1994)

It has the electric & pull start.

I turned it over with a socket on the flywheel nut & it was a little stiff. I put some Marvel Mystery Oil in the cylinders & let it sit. Turned it over again & it turned very easy. I connected my spark checker to both cylinders & got spark on both. The electric starter turns when jumped to a battery.
Cylinder on the starter side has 150 PSI compression & 20% leakdown.
Cylinder on oil filter side has 160 PSI compression & 60% leakdown. Carb looks clean & jets are open.
It didn't come with a fuel pump so I will try an EZGO pump. He said they used an electric fuel pump on the carpet cleaning setup. Did they use differant needle jets with electric pumps?
I plan on bench testing tomorrow if I get time.

Flintrock · 06-01-2009, 08:26 PM

Looks like a great start! Good Luck and keep us posted!!!

pizzamaker · 06-01-2009, 09:13 PM

i agree! good start, the ez go fuel pump will work fine and the needle/jet are the same.

56servi · 06-04-2009, 06:25 AM

Put the EZGO fuel pump on, changed the exhaust to an old Vanguard muffler I had checked the carb & started her up. Runs smooth & idles fine.
Need to address the clutch issue & its ready for install.

I am putting my clutch questions here that I started on Billys Buggle engine swap thread.

I tried banging on my drive clutch like Pizzamakeer showed in his pictures but no luck. Is it a std thread or right handed. If I get it apart it looks like a roll pin holds the sheeve on the shaft. Can you get the sheeve off so you have just the shaft. If so what is the ID size needed for the 1in Vanguard shaft. Has anyone machined a EZGO clutch for a Vanguard crank.

pizzamaker · 06-04-2009, 06:52 AM

Quote:

Originally Posted by 56servi

Put the EZGO fuel pump on, changed the exhaust to an old Vanguard muffler I had checked the carb & started her up. Runs smooth & idles fine.
Need to address the clutch issue & its ready for install.

I am putting my clutch questions here that I started on Billys Buggle engine swap thread.

I tried banging on my drive clutch like Pizzamakeer showed in his pictures but no luck. Is it a std thread or right handed. If I get it apart it looks like a roll pin holds the sheeve on the shaft. Can you get the sheeve off so you have just the shaft. If so what is the ID size needed for the 1in Vanguard shaft. Has anyone machined a EZGO clutch for a Vanguard crank.

the thread is std right hand, you may need to make a tool that fits between he three arms [like an old socket] and use a impact on it.
i can't help with the boring,never did it.

pizzamaker · 06-04-2009, 07:26 AM

i looked for the socket i used but i can't find it, but i took it and set it on top and marked the were the arms were and cut slots in it so it slip over the center and down over the arms. if that made any sense.

56servi · 06-04-2009, 08:10 AM

I understand
Did you get the shaft off the sheeve

pizzamaker · 06-04-2009, 08:21 AM

Quote:

Originally Posted by 56servi

I understand
Did you get the shaft off the sheeve

you mean the tapered hub in the back of the clutch?

pizzamaker · 06-04-2009, 08:32 AM

sorry for the crappy picture

billys buggie · 06-04-2009, 12:36 PM

i will be picking up my clutch tomarrow i believe they bored the hole larger and then made a bushing with a key in it. then pined the bushing to the clutch with set screws. i will know more tomarrow.

06-01-2009, 08:06 PM	#1
56servi Gone Wild Join Date: Aug 2008 Location: Walled Lake MI Posts: 332	New to me used Vanguard for my Marathon I picked up a used 16 HP Vanguard today. Going to replace the Ski Doo engine in my EZ GO Marathon. The engine came out of a carpet cleaning machine. The hour meter showed 3300 hours. It has a 1 in shaft so should work OK. It has been sitting for a few years in a mini storage unit. The engine numbers are Model 303447 Type 0375-01 1880 Code 94010611 (Made in 1994) It has the electric & pull start. I turned it over with a socket on the flywheel nut & it was a little stiff. I put some Marvel Mystery Oil in the cylinders & let it sit. Turned it over again & it turned very easy. I connected my spark checker to both cylinders & got spark on both. The electric starter turns when jumped to a battery. Cylinder on the starter side has 150 PSI compression & 20% leakdown. Cylinder on oil filter side has 160 PSI compression & 60% leakdown. Carb looks clean & jets are open. It didn't come with a fuel pump so I will try an EZGO pump. He said they used an electric fuel pump on the carpet cleaning setup. Did they use differant needle jets with electric pumps? I plan on bench testing tomorrow if I get time.

06-01-2009, 08:26 PM	#2
Flintrock Raised by coyotes Join Date: Nov 2008 Location: Central Texas Posts: 5,658	Re: New to me used Vanguard for my Marathon Looks like a great start! Good Luck and keep us posted!!!

06-01-2009, 09:13 PM	#3
pizzamaker ****tard supreme Join Date: Jun 2008 Location: waldo,wisconsin Posts: 5,401	Re: New to me used Vanguard for my Marathon i agree! good start, the ez go fuel pump will work fine and the needle/jet are the same.

06-04-2009, 06:25 AM	#4
56servi Gone Wild Join Date: Aug 2008 Location: Walled Lake MI Posts: 332	Re: New to me used Vanguard for my Marathon Put the EZGO fuel pump on, changed the exhaust to an old Vanguard muffler I had checked the carb & started her up. Runs smooth & idles fine. Need to address the clutch issue & its ready for install. I am putting my clutch questions here that I started on Billys Buggle engine swap thread. I tried banging on my drive clutch like Pizzamakeer showed in his pictures but no luck. Is it a std thread or right handed. If I get it apart it looks like a roll pin holds the sheeve on the shaft. Can you get the sheeve off so you have just the shaft. If so what is the ID size needed for the 1in Vanguard shaft. Has anyone machined a EZGO clutch for a Vanguard crank.

06-04-2009, 07:26 AM	#6
pizzamaker ****tard supreme Join Date: Jun 2008 Location: waldo,wisconsin Posts: 5,401	Re: New to me used Vanguard for my Marathon i looked for the socket i used but i can't find it, but i took it and set it on top and marked the were the arms were and cut slots in it so it slip over the center and down over the arms. if that made any sense.

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06-04-2009, 08:10 AM	#7
56servi Gone Wild Join Date: Aug 2008 Location: Walled Lake MI Posts: 332	Re: New to me used Vanguard for my Marathon I understand Did you get the shaft off the sheeve

06-04-2009, 08:32 AM	#9
pizzamaker ****tard supreme Join Date: Jun 2008 Location: waldo,wisconsin Posts: 5,401	Re: New to me used Vanguard for my Marathon sorry for the crappy picture

06-04-2009, 12:36 PM	#10
billys buggie Getting Wild Join Date: Apr 2008 Location: pittsburgh Posts: 89	Re: New to me used Vanguard for my Marathon i will be picking up my clutch tomarrow i believe they bored the hole larger and then made a bushing with a key in it. then pined the bushing to the clutch with set screws. i will know more tomarrow.

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