General Category > Quadrajet Carb Talk and Tips
Main Well Bleed Tubes
von:
I just want to verify that the Secondary Tube Restriction listed in the book recipes (.036 in Recipe #2) is the same thing as the Main Well Bleed Tubes as shown in the pic on Page 126. ??
kelley555:
On the Edelbrock 1910 section, it's called a Secondary air bleed tubes. If you follow the small brass tubes & blow thru them,air exits the top of the carb. Look on page 107, the top pic,see the small tubes exiting the air horn, inside,closest to the carb stud. That's the smaller tube your asking about. The 2 small inner brass tubes in the airhorn enter the main well area & vent to the atmosphere. Call it (main well) bleed tubes like the page says,if you like.They set not far from the larger tubes. Now the larger tubes,do pickup fuel & fed the secondary's from 2 small secondary wells. They feed from the main wells by 2 small holes(like an extra accelerator pump on the secondary side when the big boys kick in. I believe the books says this some where's or did I dream this,I only read the book several times. I hope I'm right Cliff's watching. Later Kelley
omaha:
maybe secondary well airbleed tubes would be a better description. It is a well and it is the larger of the two wells but I am not sure if you could call it the main well. That all depends if you call the primary side the "main" side. toe-may-toe, tah-ma-toe. anywho, they're airbleed tubes for the secondary wells.
airbleeds for the primary side do not use tubes, they have drilled passages or air=bleed orifices
of course there are two pair of wells for the secondary side. one for the acceleration tubes and one for the jets
I guess in that case you could sorta call the wells for the secondary jets, "main" wells. I dont know....I am corn-fused (Neb. humor). Main wells, secondary accel resevoir restriction orifices, primary wells, idle tubes, idle air bleeds; I try to not get too hung up on the terminology (although you need to know what your talking about). It can get confusing.
kelley555:
Like I said,maybe I was dreaming about the info in the book. I thought the large main well is were the float hung out & the 2 smaller brass tubes (secondary air bleed) extend from the air horn to the main well & exited thru the air horn thru 2 small brass tubes,to the air? The larger tubes I thought were a secondary accelerating tubes that extends from the airhorn to the 2 smaller secondary wells that are on each side of the main well.Connected by a single hole in each. I know for sure these smaller wells are filled by the small hole from the main well. I increased the hole on my receipe from .040 to .050). These I thought, gives you extra fuel (kinda like a second accelerator pump when the big boy barrel's open. This should help cover a dreadful !bogg! along with the secondary air valve tension spring adjustment. Maybe I'm wrong,so I get a F for reading late at night. I was trying to be a good rookie student & understand this kind of carb as well or maybe better than I understand Holley's. I spent a lot of time blowing air thru the airhorn,main body & base plate passages to see where it exited. Maybe Ciff can get us straight. Later Rookie Kelley
omaha:
I think i figured it out. The main wells are under the jets!! Either front (prim.) OR rear (secon.)
and the only ones that have air-bleed tubes are the secondaries. these tubes have the "squeezed down"
tip on the bottom. They let air mix with the fuel on the secondary side of the carb. The other secondary "accel" tubes get the secondaries up and going. They dip down into the two small bowls that are only used for the accel function of the secondaries and are located in between the primary and secondary bores in the main casting.
Sometimes it helps to explain things to yourself!! LOL (I like that because then I can explain it to someone else and not sound like a moron) {like when you're trying to explain why the Q-jets are better than holleys and you can't come up with the right words, it's like trying to turn the tides}.
Navigation
[0] Message Index
[#] Next page
Go to full version