Replacement for Flo Jet carb

[Minimichael]

I believe a blower vane governor keeps it from dropping in rpms as well as exceeding. Not sure about internal mechanical governors. But so long as your new carb's idle setting can keep your engine idling steady, you should be okay.

 

[Geo46]

Thought I would share a couple of pics of my carb/manifold set up, need to install gas line and see what happens, threaded may be used to some how attach an air filter, got to get it running first.

 

[Minimichael]

What's your engine capacity?

 

[Geo46]

Not exactly sure but not more than 3 HP.

 

[Geo46]

The capacity is officially a 1 1/2 HP
I have installed a Honda GX160 Carburetor rated at I think for 4HP, I currently have gas to the carburetor and nothing getting into the cylinder, when I hold the intake valve in and spin the flywheel it puffs back out of the carburetor, I remember that the same thing used to happen when the Flo Jet was installed.
Any suggestions?

 

[sparkwizard]

I think you have an old hit and miss engine, right?
Is it sparking at the plug? Didn't they need to be primed for cold starting?

 

[Geo46]

Right, a Hit and Miss with a modified carburetor , no fuel getting to cylinder

 

[sparkwizard]

If you put your hand across the end of the carb and spin the engine, do you feel suction?
Does your palm get wet with gas?

 

[Geo46]

My palm gets wet.

 

[sparkwizard]

Spark at the plug? And is the plug wet/ flooded?

 

[Geo46]

No fuel into the cylinder, has spark, this a pic of the carb mounted to the fabricated manifold, pay no attention to existing holes, I have fuel to the carb, suction when flywheel is turned but no fuel to the cylinder at this point I would love to see it flooded , any thoughts?

 

[sparkwizard]

You have turned the fuel on right? The black plastic lever. You do have intake suction at the carb, fuel in the bowl and no fuel in the combustion chamber, correct?

 

[Geo46]

Yes to all of the above, this needle valve is backed out about 3 turns, does it control the fuel mixture , ie fuel volume ? My thought how this works during the intake stroke would be. Intake valve would be pulled open and fuel would be pulled into the cylinder , correct ? ATTACH=full]314198[/ATTACH].
Thanks

 

[Minimichael]

Mixture. Set it at 2. And you should be checking for air leaks bcuz your intake is a bit maze-like

 

[Minimichael]

...

 

[Minimichael]

I could be wrong but you may be having trouble getting full atomization of mixture. Make sure seals are air tight. Set choke 1/2 way. Do your research on hit and miss cuz I'm betting Sparkwizard's on to something with pre-priming.

 

[Minimichael]

I'll bet the guys over at smokstak.com could advise on your hit & miss, also. Hooking up an ohv Honda carb spec'd to 4x the cc's of your antique isn't something flathead folks see too often.

Guessing here the carb could be down-jetted to help with aerosoling, airflow choked maybe in half, and several (or many) consecutive pulls, with lots of fresh plugs.

 

[Minimichael]

Or go back to the flo-jet if it's gonna be this hard everytime the holiday comes around.

 

[sparkwizard]

Will it fire on starting fluid, then run on gas?

 

[hermans13]

I don't see the gas tank in the photos. Is it located higher than the carb?
Is there a way to check engine compression?
Are the engine's valves free to close all the way and fast enough? Do they get manually lubricated and are they?