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Author Topic: Kawasaki fh721v questions  (Read 6608 times)
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Racer57
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« on: June 07, 2013, 01:55:03 PM »

I have a Kawasaki fh721v twin how much and what do I have to put into it to make a competative super mod, where do I get the parts from?
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« Reply #1 on: June 12, 2013, 02:46:18 AM »

I know Jason is the guy hes in Sparta Michigan I don't know what his heymow name is but he runs supermod with kawaski v twin you should ask him about it. Its really good engine if you find the horizontal shaft one that's what he runs. From what I herd Jason made his own and cost him 500 dollars to make a flywheel.
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« Reply #2 on: October 09, 2013, 12:41:29 AM »

hello, l race a mower in queensland Australia with a Kawasaki 721v 25hp v twin motor, and want to put a dominator carb on it. could someone let me know if they have done it, or knows someone else who has done it, if I will need to buy an adapter plate, or will it bolt straight on to my engine. I would also really like one or more contacts for either of these items please [ prefer email address if possible ]. thanks. NEIL.
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« Reply #2 on: October 09, 2013, 12:41:29 AM »

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« Reply #3 on: October 09, 2013, 07:17:52 AM »

Dominator as in , Holley, or E.C.?
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« Reply #4 on: October 09, 2013, 02:41:35 PM »

Of course a holley Ed I think I would go with a 1050 !   Go big or not at all
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« Reply #5 on: October 09, 2013, 05:47:08 PM »

Well then, I would go with the annular boosters over the downleg boosters....
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« Reply #6 on: October 10, 2013, 12:48:44 AM »

A "big" Holley dominator is at least 1400 cfm  roll  should be able to feed a v twin with one??
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« Reply #7 on: October 10, 2013, 08:44:33 AM »

I preferred the 1150 win annular boosters. Going to need a 90 degree adapter.....

Lester
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« Reply #8 on: October 10, 2013, 12:14:53 PM »

Annular boosters. Lester knows.
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« Reply #9 on: October 14, 2013, 01:55:19 AM »

the dominator carb l was asking about isn't a holly, it is a carby that fits on small vtwin motors like 25hp Kawasaki and 28hp briggs and other similar motors [ made in USA I am told]. l am also after a billet fly wheel for my Kawasaki 25hp fh721v if any body can help. thanks.
neil.
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« Reply #10 on: October 14, 2013, 04:25:41 AM »

You have to make your own because only other person i know that races with billet flywheel is jason makila
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« Reply #11 on: October 14, 2013, 05:40:46 AM »

the dominator carb l was asking about isn't a holly, it is a carby that fits on small vtwin motors like 25hp Kawasaki and 28hp briggs and other similar motors [ made in USA I am told]. l am also after a billet fly wheel for my Kawasaki 25hp fh721v if any body can help. thanks.
neil.

USE THE KAWASAKI CARB. EASY TO TURN INTO A RACING CARB THAT WORKS VERRY WELL.
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« Reply #12 on: October 14, 2013, 09:01:47 AM »

Dustin,
What I did to make the 6011 ARC wheel fit my Kawi single was to chuck the crank in my lathe, get it trued, then carefully adjusted my compound until I found the correct angle for the taper. It took a while but once I had it I took a piece of 1 1/2 stock and first drilled it to the smallest measurement of the taper. I then cut the taper. I then chucked up the hub (it was an Intek hub) and bored it to a .0015" press fit for the tapered sleeve. I drilled 2 plug weld holes into the hub as well then pressed the sleeve into the hub. I assembled the hub/wheel and adjusted the sleeve to get the proper position for the wheel (height) on the engine (I had a complete engine minus the flywheel and another crank so it was much quicker than having to re-assemble the engine). I then welded the sleeve through the plugs and put the hub back in the lathe and turned the welds (and hub) smooth. I then put the hub on my crank, trued the crank in the lathe and trued the hub (took .005" off just to be sure it was true). I then took an Intek ring gear and machined it down to the same size as the original flywheel (the ring gear is heat pressed on). Just heat the ring gear evenly and it will fall off. When the ARC ring is turned to the correct size simply heat the ring gear back up and slip it on the ARC ring and let cool. I need to clarify: I did the ring gear FIRST, assembled the flywheel, the pressed the hub to the desired location I needed to get the starter to mesh correctly, then welded the hub.

Lester
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« Reply #13 on: October 14, 2013, 09:29:55 AM »

the dominator carb l was asking about isn't a holly, it is a carby that fits on small vtwin motors like 25hp Kawasaki and 28hp briggs and other similar motors [ made in USA I am told]. l am also after a billet fly wheel for my Kawasaki 25hp fh721v if any body can help. thanks.
neil.
if you are referring top the EC Dominator series 2bbl carburetor for the v-twins, yes it will bolt to a kawasaki v-twin 2bbl intake.
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Jim Knutson
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« Reply #14 on: October 14, 2013, 10:39:51 PM »

thanks for every body's input. l am still hanging out for more info on billet flywheel for Kawasaki fh721v 25hp twin.
neil.
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