Recent Posts

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Newcomers / Great News !!!!
« Last post by Dancer on Today at 03:48:43 PM »
My wife insisted on taking our 12 hp Murray "forest gump" mower to the local small engine repair shop and they told her it has a bad valve; since the cost to fix it is more than the mower is worth, it is mine to hot rod.  I will be searching this forum for ideas but any help is appreciated.   
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Non-Affiliated Races / Re: PA MiniPro and Vigilante Karts
« Last post by TomL on Today at 03:19:20 PM »
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Non-Affiliated Races / Re: PA MiniPro and Vigilante Karts
« Last post by birdman_express on Today at 10:43:38 AM »
He is a spammer Tom.
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Kohler Engines / Re: Average HP Kohler Command
« Last post by TomL on Today at 05:12:24 AM »
Get hold of Midwest Super Cub.

www.mwsc.co
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Non-Affiliated Races / Re: PA MiniPro and Vigilante Karts
« Last post by TomL on Today at 05:08:14 AM »
What would you like to know?
The Vigilantes were replaced by a stock predator class this year.
The PA MiniPro mowers are still the same.
The source of this info is me.

Tom
toms580@yahoo.com
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Kohler Engines / Average HP Kohler Command
« Last post by hustler54 on Yesterday at 09:28:36 PM »
Hello, new to the forum, and recently have had an itch to build a mower.  The engine of choice is a Kohler Command CV740.  I know it's impossible to give an accurate hp number due to different variables but really just looking for a realistic guess based from you fine folk's experience. So here is what I have in mind for the build. Oh I should also add that this will be run on a dirt oval track, I not sure the size, I'm thinking 1/4 mile?

I am shooting for good usable power from 3,000-6,800/7,000

Bore 3.46"
Stroke 3.1"
Flat top pistons
Billet 7075 rods ( longest that will fit) w/bearing inserts
CDI ignition
Tuned 1bbl with Vacuum Acc. Pump
245/251 @.050 106 LSA .501 Lift mechanical flat tappet
Close Chamber heads w/ 1.50 intake-1.3 exhaust, fully ported, milled, cc'd to achieve 11.5-12:1
Billet Flywheel
Long tube header 1"

I'm here to learn so if you could answer some questions, that would be great.
This is going to be a budget build but not really sure where to save and where to spend.

The pistons are cast, will these hold up under the rpm's or should I spring for forged

Can the 1bbl be a viable choice, or should I swap it for a 2bbl? I was looking at the acc. pump on this decision but guess it would be useless once the rpm's are above a certain point.

I ported a head I had laying around, didn't really enlarge it, only matched to the intake and straighten the port to the bowl, then just rolled the short side and blended everything with a sanding roll.  I also knocked down the guide bosses even with the port roof.  I think I know your supposed to keep the cross section area before the bowl 80% of the seat.  I think I screwed this head up but was just trying to get the feel for the cutter.  Not looking for secrets just vague points in the right direction.

I was figuring if I done some research and planned everything out, I could expect high 30's low 40's?

Many thanks




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Non-Affiliated Races / Re: July 6 2018 FastLane Raceway
« Last post by FastLaneRaceway on Yesterday at 06:57:13 PM »
We don't have any mows up here at the moment. We would love to get some up here.
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Non-Affiliated Races / Re: PA MiniPro and Vigilante Karts
« Last post by Cliffordz on June 22, 2018, 02:33:29 AM »
I would like to know the source of this information that you present.
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Coffee Shop / Re: v belts
« Last post by Cliffordz on June 22, 2018, 02:32:53 AM »
Most importantly, I want to know what the forum is all about.
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Mowers or Complete Setups / Re: #150 FXT for sale...................
« Last post by berthyd on June 21, 2018, 06:03:07 PM »
Paul's Kohler is the only engine I've ever seen run that makes me think it MIGHT be better than one of my Tecumseh. And that's saying a lot.

Bert
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