TB EFI and Carburetor Questions

[cdr]

Yeah, error in snipping. Sorry cdr and it wasn't a slam, calibrate your humor detector.

LOL, sorry,,, I am so used to confrontation lately from the human race 

[timmycharger]

Mapping out a table from scratch is a big task and takes hours and hours to tune properly. Usually you sit on a dyno all day and just keep making changes.

Or you blip the throttle, go back, sniff the tailpipe and call it good like most carburetor "tuners". 

  ha! I usually go by how badly my clothes stink of exhaust/fuel before I make any adjustments 

[c00nhunterjoe]

Mapping out a table from scratch is a big task and takes hours and hours to tune properly. Usually you sit on a dyno all day and just keep making changes.

Or you blip the throttle, go back, sniff the tailpipe and call it good like most carburetor "tuners". 

  ha! I usually go by how badly my clothes stink of exhaust/fuel before I make any adjustments 

I kinda like the smell of c12...

[BSB67]

I have never used or installed EFI on any hobby or muscle car.  But it is hard for me to believe that an EFI would not be better in every way when done right over a carb.

That said, I am truly dumbfounded by the problems that people have with carbs.  Maybe its today's manufacturing quality. Maybe its today's hobbyist.    

I parked my 1968 GTS in the back of my garage in December 2015. Drove it in, turned it off.  Done.  No storage prep, no fuel stabilizer. It sat until June of this year.  So it sat for 4.5 years.  I primed the carb by adding fuel down the fuel bowl vents. Worked the throttle until the squirters delivered fuel.  It started instantly.  It has an old school Holley 4779 (750 dp)

[c00nhunterjoe]

I have never used or installed EFI on any hobby or muscle car.  But it is hard for me to believe that an EFI would not be better in every way when done right over a carb.

That said, I am truly dumbfounded by the problems that people have with carbs.  Maybe its today's manufacturing quality. Maybe its today's hobbyist.    

I parked my 1968 GTS in the back of my garage in December 2015. Drove it in, turned it off.  Done.  No storage prep, no fuel stabilizer. It sat until June of this year.  So it sat for 4.5 years.  I primed the carb by adding fuel down the fuel bowl vents. Worked the throttle until the squirters delivered fuel.  It started instantly.  It has an old school Holley 4779 (750 dp)

Agreed.  "When done right" not 1980s tbi tech. Carbs are not rocket science. People overthink them. That 4779c on my 383 was a workhorse for years.

[Kern Dog]

I have never used or installed EFI on any hobby or muscle car.  But it is hard for me to believe that an EFI would not be better in every way when done right over a carb.

That said, I am truly dumbfounded by the problems that people have with carbs.  Maybe its today's manufacturing quality. Maybe its today's hobbyist.    

I parked my 1968 GTS in the back of my garage in December 2015. Drove it in, turned it off.  Done.  No storage prep, no fuel stabilizer. It sat until June of this year.  So it sat for 4.5 years.  I primed the carb by adding fuel down the fuel bowl vents. Worked the throttle until the squirters delivered fuel.  It started instantly.  It has an old school Holley 4779 (750 dp

It isn't always the car, many times it is the gas.
Last week I was at a buddy's place. He swapped in a replacement engine in  his Valiant. The car has sat for about a year and the gas in the tank was about 18 months old. He drained the tank and refilled with fresh gas.
The engine would not run without ether spray. He shut it off. I ran the throttle to smell the gas from the accelerator pump. It stunk so I drained the gas from the front and rear bowls. (Holley)
With fresh gas, it lit up immediately and ran great even with no choke.

[Paul G]

Carburetors allow the fuel in the bowls to be exposed to atmosphere. The fuel will evaporate quickly, and sour. FI is a high pressure fuel delivery system. The fuel is contained in the system. No exposure to atmosphere. Maybe that is why FI retrofit systems start up much easier than old carb systems.

[c00nhunterjoe]

Carburetors allow the fuel in the bowls to be exposed to atmosphere. The fuel will evaporate quickly, and sour. FI is a high pressure fuel delivery system. The fuel is contained in the system. No exposure to atmosphere. Maybe that is why FI retrofit systems start up much easier than old carb systems.

With most tbi systems, the fuel tank is left original,  exposed and vented to atmosphere. The only difference in exposure is the bowl vents which if using an electric pump, that problem is moot. If you are storing you car for long periods of time,regardless of the fuel system used, keep the tank filled to the top, or drain it.