Very good Jeff , just what they should have done in the factory. You may need to make a brace toward the front of the carb to stop the diaphram unit swinging to the back. It looked as though it was doing that while you were inside the car. I always love the animal sounds in the backround. looks like a nice place to live.
was wonderin if he was in hibernation for a few weeks here in pennsylvania hibernating is over and we are into our spring thaw. Jeff you have a quite a mechanical mind to come up with this stuff. Keep it up.
Thankyou for posting this. Been working on a friend's lincoln. Unloader is NLA, but this vid gave me the idea to fabricate a replacement. Found a good working unloader from a old Rochester 2 bbl and carefully adapted it to work on the 4300 autolite. Best part is if it fails, the replacement is still available on eBay for $14.
ElderlyIron That would explain the difficulty I had in looking for one. I originally assumed they were on all 4300s after seeing pics of one with an unloader in a '72 ford shop manual. Bought a nasty looking 4300 off eBay for $38 to have as a spare. Was just a year newer(1970). Found out even though it was the same make/model, I saw no provision for the linkage for the unloader. Ended up using the spare carb, with the baseplate from the old carb. Old carb was a very crappy reman that was missing pieces. Guess I sorta lucked out that it had the hole for the unloader. Only thing i dont like bout how I made it is I didn't have a way to add a retaining clip to the 1/8" rod.
@deepsquat 600 the dash pot was used on automatic transmission vehicles. It would let the throttle slow down slowly. If the throttle snap closed quickly on an automatic it would kill the engine because of the torque converter loading up.
amazing, I have a 69chevy shorty van with the same engine with a 1 Barrel Carburator n needed to find away to do the same thing somehow...this gives me a game plan to work on...✌amazing, thank you.😉
You're quite welcome. The concept is the same regardless of which donor carburetor you use. This one really needs a bracket across 2 screws to prevent rotating. I had the part laying around, so it happened to be the one I used. There are 1 bbl carbs that have that pull-off. You just have to find one! You can always go this route, too! czcams.com/video/obzULioHc64/video.html
If I had a dollar for every choke pull off I replaced. I remember the labor rate in 1976 was $9. Now its 90. That joke spring had a little piston in it but most of the time that little piston bore got plugged up with carbon and wouldn't open up the choke.
Nice job on the choke unloader. So did the air cleaner fit back on after that? Say, did you ever do any 6 to 12 volt conversions on the old Junkers? The big problem was getting the 6 volt electric wipers and heater motors to work on 12 volt without over speed and burn out. And of course not frying the gas gage. I found wiring old ignition coils in series with the wiper and blower motors and a 6 volt dash light bulb in series with the gas gage really did the trick. Have you ever tried that?
isn't that also called a DASHPOT VALVE?? and Jeff I am very paranoid about putting my hand over a carb that is haing trouble running ..I have seen fire shoot out more than once ( usually a timing issue,,but still )
Jeff how long till the 53 will be ready to sell? Will it be on elderyiron when it is ready? Glad to have you back, even if you are in love with bowties. ;)
Am I dyslexic or is that valve cover on backwards? I remember all my 235s having the oil filler more toward the front than the back of the motor. Neat trick!
There are index marks on the housing, but if you were to disregard them I think you could wind the choke coil around far enough to defeat the pull-off. The pull-off vacuum source hole is small, and the diaphragm is, too, so it doesn't generate an irresistible force. And the choke spring, a bimetallic strip, could be wound up tightly enough to present an immovable object. Advantage: Wound up spring.
Reminds me of my 1963 Ford with a 223 6 cyl engine, except it had a manual choke, can't beat a manual choke.
Thanks for the video.
Bill
Very good Jeff , just what they should have done in the factory. You may need to make a brace toward the front of the carb to stop the diaphram unit swinging to the back. It looked as though it was doing that while you were inside the car. I always love the animal sounds in the backround. looks like a nice place to live.
Love the background crickets! We miss you when you don't post! Keep 'em coming!
Learned something today, I've never heard of a choke unloader.
Thanks Jeff. You amaze me as usual. I have missed seeing you all the way over here in Virginia. Hope to see you soon.---WAGIII---
WOW glad to see you back I have missed your videos. Hope all is well and you get the bug soon to make more great videos!
as always the wait is worth it
thanks jeff looking forward to more
was wonderin if he was in hibernation for a few weeks here in pennsylvania hibernating is over and we are into our spring thaw. Jeff you have a quite a mechanical mind to come up with this stuff. Keep it up.
Nothing runs a smooth as a straight 6. Oh wait. Yeah, well I still love them.
Thankyou for posting this. Been working on a friend's lincoln. Unloader is NLA, but this vid gave me the idea to fabricate a replacement. Found a good working unloader from a old Rochester 2 bbl and carefully adapted it to work on the 4300 autolite. Best part is if it fails, the replacement is still available on eBay for $14.
Amazingly, a lot of Motorcrafts from the 70's didn't come with unloaders!
ElderlyIron That would explain the difficulty I had in looking for one. I originally assumed they were on all 4300s after seeing pics of one with an unloader in a '72 ford shop manual. Bought a nasty looking 4300 off eBay for $38 to have as a spare. Was just a year newer(1970). Found out even though it was the same make/model, I saw no provision for the linkage for the unloader. Ended up using the spare carb, with the baseplate from the old carb. Old carb was a very crappy reman that was missing pieces. Guess I sorta lucked out that it had the hole for the unloader. Only thing i dont like bout how I made it is I didn't have a way to add a retaining clip to the 1/8" rod.
some good old farm rigging use what you got great job love that car you selling it
Great idea for them old girls ! Good job !
Hey I went back, listened and stand corrected on the background. Must have had too much Apple Pie! LOL!
@deepsquat 600 the dash pot was used on automatic transmission vehicles. It would let the throttle slow down slowly. If the throttle snap closed quickly on an automatic it would kill the engine because of the torque converter loading up.
Jeff, You sure are resourceful!
Ah yes Old Carburetor's we meet again, i have delt with my fair share of the buggers
I'll have to try this on the one that's in my 69 GMC 1 ton dump truck.
AWESOME VIDEO ! Keep it up ! ! I enjoy learning a thing or two about the American made GM !
Yay!You found a use for a QuadraFlood Carb!!!!
Good job Jeff, keep up the good work !!! Need to hire you a third hand though.... ha!!! Best to you and yours....
amazing, I have a 69chevy shorty van with the same engine with a 1 Barrel Carburator n needed to find away to do the same thing somehow...this gives me a game plan to work on...✌amazing, thank you.😉
You're quite welcome. The concept is the same regardless of which donor carburetor you use. This one really needs a bracket across 2 screws to prevent rotating. I had the part laying around, so it happened to be the one I used. There are 1 bbl carbs that have that pull-off. You just have to find one!
You can always go this route, too! czcams.com/video/obzULioHc64/video.html
Nice work Jeff . . . Rog
If I had a dollar for every choke pull off I replaced. I remember the labor rate in 1976 was $9. Now its 90. That joke spring had a little piston in it but most of the time that little piston bore got plugged up with carbon and wouldn't open up the choke.
i love that truck i wish i had one
nice job the jeff ! glad to see more vids
Good idea.Thanks Jeff.
Nice job on the choke unloader. So did the air cleaner fit back on after that? Say, did you ever do any 6 to 12 volt conversions on the old Junkers? The big problem was getting the 6 volt electric wipers and heater motors to work on 12 volt without over speed and burn out. And of course not frying the gas gage. I found wiring old ignition coils in series with the wiper and blower motors and a 6 volt dash light bulb in series with the gas gage really did the trick. Have you ever tried that?
And when it`s cold the choke spring should hold it closed for awhile till warm right .
Great solution.
Good Job !! Enjoyed it !!
Great information. Thanks for the vid
about time man, been missing you
Clever hack. I’ll remember that trick.
shes purrin now,,
Quite ingenious!
Nice fix.
Thats spot on, A1 engineering there :-)
isn't that also called a DASHPOT VALVE??
and Jeff I am very paranoid about putting my hand over a carb that is haing trouble running ..I have seen fire shoot out more than once ( usually a timing issue,,but still )
Good job Jeff !
My quadrajet 350 didn't load up and die without the choke unloader, but it sure did run bad until the choke opened
great videos i really enjoy them!
I like it.
Jeff how long till the 53 will be ready to sell? Will it be on elderyiron when it is ready? Glad to have you back, even if you are in love with bowties. ;)
53 chevy? did you load videos of this car? thought I had seen all your stuff.....
Am I dyslexic or is that valve cover on backwards? I remember all my 235s having the oil filler more toward the front than the back of the motor.
Neat trick!
Is there something to stop the choke spring from being wound around far enough for the unloader to have a problem opening the choke butterfly?
There are index marks on the housing, but if you were to disregard them I think you could wind the choke coil around far enough to defeat the pull-off. The pull-off vacuum source hole is small, and the diaphragm is, too, so it doesn't generate an irresistible force. And the choke spring, a bimetallic strip, could be wound up tightly enough to present an immovable object. Advantage: Wound up spring.
cool
hey jeff wheres that hydromatic 56 2 1/2 ton?
shouldn't this be "This old GM vehicle"? Anyways...very ingenious. I always hated those heat riser chokes :)
Those are actually frogs.
Are those frogs I hear in the background?
or do what was done in days of old--manual choke
Hey, I did a Ford. Twice!
Manual hand choke is easier and fail safe......unless the cable breaks.
I hate Carbs!