Turbo Lawn Mower Engine

[IvoryJ30t]

10 gallons 93 octane + 5 gallons PURE toluene = 100 octane

[cosmo]

am I the only one who has ever fantasized about turboing your John Deere and mowin the yard in about 20 minutes? I'm always pissed that it takes me 1 1/2 hours to mow my ****in yard

[IvoryJ30t]

ive always had visions of a big block riding mower with open headers.

i would mow the lawn at 4 am on sundays.

[cosmo]

I'd mow the lawn so much, there would be no such thing as grass in my yard for the next 100 years

[JDMaholic]

too bad you cant use a yamaha KT100 . Anyway if you want to make it faster your NOT going to want to run a rearend, yes that seems backward, but you want to run a centrifigal clutch and solid axle. The loss in the gears is actually suppose to be greater. Thats why cart racers don't run a differential. You should be able to get all kinds of parts for it if it is a B&S. Any local machine shop can machine it or get parts. Really you can do just about anything yourself if you have a Bridgeport. You'll want to buy or machine a new cam, buy new oversized valves and get seats graound and hardened. Many of these single cylinder B&S engines are very easy to stroke, the key is keeping it light so using the original case would be ideal. The piping is very important, they make all kinds of different pipes for different RPM's, the can type are very restrictive. The 5hp B&S is a standard cart engine and many race engines make 15hp or better, many use alcohol though. Let me see if I can find my old carting mags that had aftermarket stuff fo B&S. I believe COMET racing in indy had a website not sure though and I'm too lazy to look for it.

[MinisterofDOOM]

Here's their response...It's not too helpful, though. And that thing is EXPENSIVE!!!! I'd assume you just inform them you'd like to order the thing, put your address in the email and tell them you'll send them a check or money order, or do a COD, once they send you a confirmation notice.Anyway, here's her (I think it's a woman...) response:

From: JaimeMJM To: ----------------Sent: Tuesday, October 19, 2004 4:38 AMSubject: Re: Ordering a product from you.

Chris, I think you are talking about this turbo http://www.mjmturbos.com/images/SMALLEST.jpg I sell this to ESPN Stihl chain saw unlimited competetion.They are very expensive to buy in Japan but my price is reasonable $650. + shippingDon't forget to click the graveyard pictures at the bottom picture I have many different types of turbo.If you have any friends looking for car turbo...http://www.mjmturbos.com/20G.htm this one $680. + shippinghttp://www.mjmturbos.com/TD05GARRETT.htm $750. + shippinghttp://www.mjmturbos.com/Td06-Td05.htm $750. + shippinghttp://www.mjmturbos.com/Td05HybridT04e.htm $750. + shippinghttp://www.mjmturbos.com/New20G.htm The ultimate turbo is $799. + shippingThe 18G cost $699. + shipping

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[jdmfreak]

Hmmmm....IDK about the whole clutch thing. We got the 8hp motor off a tractor. It was mounted in the rear so we figured we'd use the stock rear end. I believe it also has 3 gears. Any link to a site that shows me the clutch way? If we go that route, then we'll definately save weightl, but how costly is it gonna be?

So far here's our list of mods...1) Port and polish the intake and exhaust

2) Take the big pulley from the rear and put it in the front and put the small one from the front in the rear to increase acceleration(If we keep the rear end).

3) Shave the head

4) New/better Carburator

5) Run race gas

Id be fine with these mods, but I doubt it'll be able to beat a 14hp motor or a 20hp motor running on alcohol. A guy just picked up some steel for our frame. He said that we'll need lighter steel for the roll cage though. He's also looking for more powerful rear mounted motors right now.

Oh well things are looking up though

[navysnail]

make sure you allow some time for tuning, and i would definatly make your own exhaust system for it, just cut make a flange and kind of make it maby 1 inch piping straight back

[jdmfreak]

Oh dammit. I forgot to ask how the leaf blower thing is supposed to work together with the motor.

[navysnail]

just hook up the end of the leaf blower to the intake on the lawnmower, it will force air in, not at very much power but will still give you an edge, you might have to rig up some sort of adapter

[jdmfreak]

wouldnt that add too much weight?

[navysnail]

well, it would add maby oh, 7lbs or so, but if it increases power, it will be worth it.

think about it like this: a turbocharger will increase the wieght of your car but will easilly pay itself off by the power increase, now the blower is heavier and wont make nearly as much power, but if it can increase it enough to pull more then its own weight, its worth it.

[jdmfreak]

I gotcha.

Forgive me if I sound like an idiot, but how is the fan supposed to spin? Will I need the Leaf blower motor as well?

Any other suggestions?

[navysnail]

well, the leaf blower basicaly works as a centrifugal super charger, it has a spinning turbine that throws air out and into the tube, were it gets flung out. you just get the leaf blower as a hole and make some kind of adaptor to get it to fit the lawnmower carb.

you can hit me up on aim if y ou wana direct chat navysnail16

[SeVa-S13]

The leaf blower thing has been done on a 240, it only works at WOT. But being carburated might change that...

[jdmfreak]

How about that tornado thing? Would that work as well?

[MinisterofDOOM]

You mean the metal round thing with blades that you stick in right before the fuel injection manifold? Naw...those things are BS. A friend of mine put one on his Silverado and it didn't do jack crap. All they do is get the air swirling so it mixes better. It might make more of a difference on a carburated motor, though. It's worth a try, though. If I remember, they're pretty cheap.

[jdmfreak]

Hmmmm.....Maybe

The kid that got our steel found a place that deals with lawnmower engines. Some were around 14, 16, and 18 hp. The thing is that the guy that works on/sells them is blind. He wants $200 for the more powerful engine.

Id be soooooo wrong to cheat him. The thought came across our minds though, but if we're gonna pay, it'll most likely be what he wants for the engine. We'll worry about that later though.

On a side note we're starting to weld the rear of it tomorrow. We're gonna use the rear engine mount from the tractor and weld the steel to that. From then on it aint nothin but progress.

[nsrZ32]

I was down at my Sister's farm in Maryland once and saw a turbo riding lawnmower with nitrous. Talk about one crazy hillbilly. Dude lived in a shack. Guess his sister left him or something. lol Dude raced it up and down the street.

[MinisterofDOOM]

Guess his sister left him or something..

[JustinStrife]

Jeff my best advice is for you to go on a diet and shed some weight. That'll make up for the lack of HP



I'm kidding dawg. Put me on it. I weigh 130 you'll definetly win

[Florida240sx]

Put a huge bumper on it so no1 can pass you then your good to go.http://www.geocities.com/motor....html

[HashiriyaS14]

Sux you can't use bike engines. Even old Honda bike engines rev to like 11k rpm and make some decent power for a go-kart.

Has anyone seen the "Formula Hayabusa" open-wheel race cars? Neato stuff.

[jdmfreak]

Well what other 1 stroke/vertically mounted motors be had for cheap?