1 2 3
Knurled
Knurled MegaDork
4/9/17 3:23 p.m.

The backstory was, it was done as a kind of experiment to see how much power a Tecumseh lawnmower carb and intake could allow, as there was a kart race series with no engine limit except must use stock carb/manifold and everyone believed that there was no point to modifying the engines.

The engine made 500hp with a 4-barrel.

EastCoastMojo
EastCoastMojo Mod Squad
4/9/17 3:37 p.m.

Dude, if you're gonna ask us to guess, you have to wait before you reveal the answer.

QuasiMofo
QuasiMofo MegaDork
4/9/17 3:47 p.m.

500 with the 4 barrel so 300hp 375 ft/lb

Nick (Bo) Comstock
Nick (Bo) Comstock MegaDork
4/9/17 3:48 p.m.

150

spitfirebill
spitfirebill UltimaDork
4/9/17 3:52 p.m.

75

Crxpilot
Crxpilot New Reader
4/9/17 3:54 p.m.

425/425

aircooled
aircooled MegaDork
4/9/17 3:59 p.m.

I don't know about HP, but it should make a poop load of torque up to 1500(?) rpm. Compared to the lawnmower at least.

Knurled
Knurled MegaDork
4/9/17 4:01 p.m.

Max RPM was 4000 on a free rev

aircooled
aircooled MegaDork
4/9/17 4:05 p.m.

Oh, built in rev limiter.

BTW, you are a sick, sick fellow.... I approve.

Dusterbd13
Dusterbd13 UltimaDork
4/9/17 4:05 p.m.

Wow. You win the Internet today.

My guess is 100 horse.

Cactus
Cactus Reader
4/9/17 4:15 p.m.

I might have laughed hard enough at that pic for the neighbors to hear. I'm shocked you could get it to run, let alone do 4000rpm.

47 HP.

Nick (Bo) Comstock
Nick (Bo) Comstock MegaDork
4/9/17 4:20 p.m.

Wait a minute... Is that in a car on a chassis dyno? If so I didn't take drive line losses into account.

GTXVette
GTXVette HalfDork
4/9/17 4:21 p.m.

300hp, it didn't make it to 5252 rpm so about half of its power at 4000,I'm suprised the carb was big enough to pull that high or that they could get that much Fuel in it.

lrrs
lrrs Reader
4/9/17 4:29 p.m.

What hp tecumseh did the carb come from ?

Going to guess if from a 8 hp motor, the 454 would only spin to 2000 loaded, and say about 55 hp.

Chadeux
Chadeux Dork
4/9/17 4:36 p.m.

113hp

Knurled
Knurled MegaDork
4/9/17 4:41 p.m.
lrrs wrote: What hp tecumseh did the carb come from ? Going to guess if from a 8 hp motor, the 454 would only spin to 2000 loaded, and say about 55 hp.

You're really close. 60hp at 2500rpm.

I am shocked that the lawnmower carb could move 60hp worth of fuel!

EastCoastMojo
EastCoastMojo Mod Squad
4/9/17 4:43 p.m.

$1

GTXVette
GTXVette HalfDork
4/9/17 5:02 p.m.

I guess I thought you said it pulled 4000 rpm and that suprised me there.

Nick (Bo) Comstock
Nick (Bo) Comstock MegaDork
4/9/17 5:29 p.m.

That's still really impressive.

TurboFocus
TurboFocus Reader
4/9/17 5:32 p.m.

did you just remove the jets and let everything flow?

mad_machine
mad_machine MegaDork
4/9/17 5:37 p.m.

So if you went with a smaller engine, you would probably get more power due to a higher RPM range. I wonder what a 2 litre 4 would do.. even a geo metro 3

Dusterbd13
Dusterbd13 UltimaDork
4/9/17 5:37 p.m.

By my math, if you put 1 carb per cylinder, you could have a 440hp 454 with itbs.....

For about 96 bucks. Carbs are 12 bucks on ebay....

Robbie
Robbie UberDork
4/9/17 5:46 p.m.
Dusterbd13 wrote: By my math, if you put 1 carb per cylinder, you could have a 440hp 454 with itbs..... For about 96 bucks. Carbs are 12 bucks on ebay....

This is amazing and needs to be tried. Maybe even make a manifold with 12 of em for the WTF factor.

Robbie
Robbie UberDork
4/9/17 5:47 p.m.

This thread makes me happy

Knurled
Knurled MegaDork
4/9/17 5:53 p.m.
Robbie wrote:
Dusterbd13 wrote: By my math, if you put 1 carb per cylinder, you could have a 440hp 454 with itbs..... For about 96 bucks. Carbs are 12 bucks on ebay....
This is amazing and needs to be tried. Maybe even make a manifold with 12 of em for the WTF factor.

I was thinking about a spider-like ring of lawnmower carbs.

BTW - This is not my doing! I found it on another forum.

1 2 3

You'll need to log in to post.

Our Preferred Partners
adnT99EueMcJHIGR3M1tN5J7o68D2KXUTOnNKwzyVHYvXro9FqdGNuNunbb6LF5K