Tec Carb Tech

[Doc Sprocket]

Hey, y'all! I've got an older Techumseh 6hp flathead I'm playing with. It came off a Sears snowblower, not that it's pertinent. I have removed the points and condenser and swapped in an electronic ignition. So far so good. I'd like to deep-six the carb in favour of something better. The primer/choke thing is sad. It's a steel plate on a spring-loaded plunger that covers the throttle body when depressed. You're supposed to push this thing in and crank the engine over a couple of times, which allegedly creates enough vacuum to draw extra fuel in for starting, then release the plunger and start it. Whatever.ut:
So, it's hittin' ye olde scrappe pile.
Since I know sweet squat about carbs (still learning), I'm looking for recommendations on a better carb for this engine.Maybe even something with a choke!!! Please don't say "Get a Mikuni!", that doesn't help. What would help is to tell me if it's a good idea to just measure the bore from this one and shop from there, or?? And If I can't find the exact right bore, how much room do I have to play? 1mm? 3mm?
Thanks! Chris

 

[Thunderbird SC]

actually thats like a finger over the carb spring/plate, you have to be turning the engine over to make that work while pushing that in. Low tech indeed

 

[sideways]

Hey, y'all! I've got an older Techumseh 6hp flathead I'm playing with. It came off a Sears snowblower, not that it's pertinent. I have removed the points and condenser and swapped in an electronic ignition. So far so good. I'd like to deep-six the carb in favour of something better. The primer/choke thing is sad. It's a steel plate on a spring-loaded plunger that covers the throttle body when depressed. You're supposed to push this thing in and crank the engine over a couple of times, which allegedly creates enough vacuum to draw extra fuel in for starting, then release the plunger and start it. Whatever.ut:
So, it's hittin' ye olde scrappe pile.
Since I know sweet squat about carbs (still learning), I'm looking for recommendations on a better carb for this engine.Maybe even something with a choke!!! Please don't say "Get a Mikuni!", that doesn't help. What would help is to tell me if it's a good idea to just measure the bore from this one and shop from there, or?? And If I can't find the exact right bore, how much room do I have to play? 1mm? 3mm?
Thanks! Chris

Just try and find one that is roughly the same bore, the mounts lining up are probably more important, if you get one with a bigger bore then you can just port the inlet tract on the motor to be the same size. I wouldn't go anymore than 3mm over, bigger carby means more top end power, to big and it will just accelerate like crap and idle really rough. You could just modify the "choke" to work like a normal one?

Hayden