Big Block Generac in Yamaha G-20

LURCH · 11-29-2012, 03:43 PM

Well guys after a year or so with this engine GTH 990 32hp Generac. It's starting, I got a lot of parts ordered today, and will be getting started in a couple of weeks when everything gets here.

I ordered a clutch from Tom @ CPP 1 1/8 shaft Team G I think Rated for 100hp. HD belt and rear clutch spring.

1- New Mikuni HSR 42mm carb. from E-Bay great deal $230.00 and free shipping.

Intake and adapter for Mikuni from Mike with the Mud Boat guys.

Exhaust tubing for 2 into 1 custom header from Borla.

I still need to get an alternator and make some kind of a mounting bracket for it and add a pully on the crank for it.
When I get it started I'll get pic's along the way and keep them posted. Wish me luck, and if any body has any suggestions they will be welcomed.

Thanks for watching, LURCH!!!!!!

JcXtreme72 · 11-29-2012, 06:07 PM

About dang time Lurch lol good luck and of course keep us posted.

smallblock450sl · 11-29-2012, 06:55 PM

Good for you! Some builds just take longer, expecially one of a kind builds. I'll be watching and learning. Let the madness begin

LURCH · 11-29-2012, 09:27 PM

I can't wait to not feel like I've got a target on my back, out on the main roads. Even though I can run 30 to 34 mph on level ground when I hit the steep inclines I'm down to 8 to 10 mph with no place to pull off most of the time.
I want know what to think!!!!!!!

LURCH!!!!!

pachanga90 · 11-29-2012, 09:42 PM

Just wait for that first road-trip and you blast up those hills,then it'll all be worth it!When I did the Opposed-Swap,I wasn't real happy on the first ride,it didn't feel much stronger than the original,then I turned the clutches up a bit,and took it in the trails.OH-BOY!!

!!No Comparison!!!

LURCH · 11-30-2012, 06:48 PM

I'll post it in the for sale section but if anyone is interested my stock 2001 Yamaha 301cc engine and everything on it will be for sale. I'm thinking around 500.00 OBO, new coil and plug wire,rebuilt carb, rebuilt starter/generator, clutch and belt. It has a Plowmans life time filter (like a K&N) and jet kit, modified air box, starts and runs great. I can run about 30/34 mph @ around 4K rpm's in my Limo cart with,stock gears,23" tires, windshield and 2 adults.

Thanks, LURCH!!!!!!

LURCH · 12-02-2012, 05:47 PM

Tom @ CPP and his people are on the ball, I ordered my stuff on Thur. and it came on Fri.

Golf Cart 256.jpg

Golf Cart 257.jpg

Golf Cart 258.jpg

LURCH · 12-03-2012, 08:05 PM

Another box arrived today, it was my Mikuni for the Big Block!!!!!!

Golf Cart 260.jpg

Golf Cart 261.jpg

Golf Cart 262.jpg

Golf Cart 263.jpg

LURCH · 12-09-2012, 09:02 PM

Well I got some more parts at the end of last week. My intake and Mikuni adapter with gaskets came.

Golf Cart 275.jpg

Golf Cart 276.jpg

Golf Cart 277.jpg

Golf Cart 278.jpg

Golf Cart 279.jpg

kinion · 02-07-2013, 08:21 PM

Bump... Lurch, how is it coming along?

11-29-2012, 03:43 PM	#1
LURCH Gone Wild Join Date: May 2011 Location: North East Tn. Posts: 1,029	Big Block Generac in Yamaha G-20 Well guys after a year or so with this engine GTH 990 32hp Generac. It's starting, I got a lot of parts ordered today, and will be getting started in a couple of weeks when everything gets here. I ordered a clutch from Tom @ CPP 1 1/8 shaft Team G I think Rated for 100hp. HD belt and rear clutch spring. 1- New Mikuni HSR 42mm carb. from E-Bay great deal $230.00 and free shipping. Intake and adapter for Mikuni from Mike with the Mud Boat guys. Exhaust tubing for 2 into 1 custom header from Borla. I still need to get an alternator and make some kind of a mounting bracket for it and add a pully on the crank for it. When I get it started I'll get pic's along the way and keep them posted. Wish me luck, and if any body has any suggestions they will be welcomed. Thanks for watching, LURCH!!!!!!

11-29-2012, 06:07 PM	#2
JcXtreme72 Gone Wild Join Date: Jan 2011 Location: Las Vegas, Nevada Posts: 1,942	Re: Big Block Generac in Yamaha G-20 About dang time Lurch lol good luck and of course keep us posted.

11-29-2012, 06:55 PM	#3
smallblock450sl Sometime's............ Join Date: Oct 2007 Location: Tacoma Washington Posts: 11,875	Re: Big Block Generac in Yamaha G-20 Good for you! Some builds just take longer, expecially one of a kind builds. I'll be watching and learning. Let the madness begin

11-29-2012, 09:27 PM	#4
LURCH Gone Wild Join Date: May 2011 Location: North East Tn. Posts: 1,029	Re: Big Block Generac in Yamaha G-20 I can't wait to not feel like I've got a target on my back, out on the main roads. Even though I can run 30 to 34 mph on level ground when I hit the steep inclines I'm down to 8 to 10 mph with no place to pull off most of the time. I want know what to think!!!!!!! LURCH!!!!!

11-29-2012, 09:42 PM	#5
pachanga90 I Refuse To Get Stuck!!! Join Date: Jun 2010 Location: Hilton,NY Posts: 5,427	Re: Big Block Generac in Yamaha G-20 Just wait for that first road-trip and you blast up those hills,then it'll all be worth it!When I did the Opposed-Swap,I wasn't real happy on the first ride,it didn't feel much stronger than the original,then I turned the clutches up a bit,and took it in the trails.OH-BOY!!!!No Comparison!!!

Today
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11-30-2012, 06:48 PM	#6
LURCH Gone Wild Join Date: May 2011 Location: North East Tn. Posts: 1,029	Re: Big Block Generac in Yamaha G-20 I'll post it in the for sale section but if anyone is interested my stock 2001 Yamaha 301cc engine and everything on it will be for sale. I'm thinking around 500.00 OBO, new coil and plug wire,rebuilt carb, rebuilt starter/generator, clutch and belt. It has a Plowmans life time filter (like a K&N) and jet kit, modified air box, starts and runs great. I can run about 30/34 mph @ around 4K rpm's in my Limo cart with,stock gears,23" tires, windshield and 2 adults. Thanks, LURCH!!!!!!

12-02-2012, 05:47 PM	#7
LURCH Gone Wild Join Date: May 2011 Location: North East Tn. Posts: 1,029	Re: Big Block Generac in Yamaha G-20 Tom @ CPP and his people are on the ball, I ordered my stuff on Thur. and it came on Fri. Golf Cart 256.jpg Golf Cart 257.jpg Golf Cart 258.jpg

12-03-2012, 08:05 PM	#8
LURCH Gone Wild Join Date: May 2011 Location: North East Tn. Posts: 1,029	Re: Big Block Generac in Yamaha G-20 Another box arrived today, it was my Mikuni for the Big Block!!!!!! Golf Cart 260.jpg Golf Cart 261.jpg Golf Cart 262.jpg Golf Cart 263.jpg

12-09-2012, 09:02 PM	#9
LURCH Gone Wild Join Date: May 2011 Location: North East Tn. Posts: 1,029	Re: Big Block Generac in Yamaha G-20 Well I got some more parts at the end of last week. My intake and Mikuni adapter with gaskets came. Golf Cart 275.jpg Golf Cart 276.jpg Golf Cart 277.jpg Golf Cart 278.jpg Golf Cart 279.jpg

02-07-2013, 08:21 PM	#10
kinion Getting Wild Join Date: Mar 2009 Location: Middletown, Missouri Posts: 103	Re: Big Block Generac in Yamaha G-20 Bump... Lurch, how is it coming along?

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