What's the difference between Dual Solex and IDF 40's
Novice,
Marty
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What's the difference between Dual Solex and IDF 40's
Novice,
Marty
Novice,
Marty
Marty....
Most modern Solex carb. instalations use single choke (barrel) carbs.
Weber IDF's 40, 44, or 48's are two barrel (twin choke) carbs.
With dual Solex carbs, one carb feeds two cylinders, while Weber IDF's give each cylinder it's own choke.
Hope this helps....
Leon C.
Most modern Solex carb. instalations use single choke (barrel) carbs.
Weber IDF's 40, 44, or 48's are two barrel (twin choke) carbs.
With dual Solex carbs, one carb feeds two cylinders, while Weber IDF's give each cylinder it's own choke.
Hope this helps....
Leon C.
Which is more reliable? How about performance.
Marty
Marty
Twin barrel are better; believe me I know. I swapped my Kadrons for Dellortos (very similar to Webers) and the difference is like night and day.
Twin barrel are better; believe me I know. I swapped my Kadrons for Dellortos (very similar to Webers) and the difference is like night and day.
Twin barrel are better; believe me I know. I swapped my Kadrons for Dellortos (very similar to Webers) and the difference is like night and day.
Sorry for the multiple posts; I'm having DSL modem problems here.
Hey Ricardo....Were you thinking WEBER 46 IDA 3 triple choke?????
Leon C.
Leon C.
Does anyone besides me think it a bit ironic that Webers are frequently (usually) identified by their "chokes"? Seems like very few of us even have the chokes connected. It ain't like they are automatic or anything.
Actually, if I'm not mistaken, generally the difference is this (on webers):
IDA - piston type accelerator pump, kicks butt at WOT, can be somewhat to very rough off-idle
IDF - diaphragm type accelrator pump, makes less ultimate power, but very smooth off-idle, suitable for street and most (less than full race) performance applications.
Someone else can throw in on this who knows more. But this is what I figured out when I was trying to educate myself about the 3-barrel carbs for our assortment of derelict 911's.
angela
IDA - piston type accelerator pump, kicks butt at WOT, can be somewhat to very rough off-idle
IDF - diaphragm type accelrator pump, makes less ultimate power, but very smooth off-idle, suitable for street and most (less than full race) performance applications.
Someone else can throw in on this who knows more. But this is what I figured out when I was trying to educate myself about the 3-barrel carbs for our assortment of derelict 911's.
angela
That term "choke" might be a bit misleading...
The Webers on my car are triple barrel or triple throats (that's on a 911 but I think I read that these carbs were originally designed for the 6 cylinder Dino??)but believe me there are no "chokes" on these carbs. Takes a lot to coax them to life, and keep going, when cold until the engine warms up.
The Solexes on my 912 were dual throat...they make just an adapter plate to adapt the Weber dual throats to the Solex manifolds. Can't recall of the Solexes had "chokes" but I'm thinking that they didn't.
Brian
The Webers on my car are triple barrel or triple throats (that's on a 911 but I think I read that these carbs were originally designed for the 6 cylinder Dino??)but believe me there are no "chokes" on these carbs. Takes a lot to coax them to life, and keep going, when cold until the engine warms up.
The Solexes on my 912 were dual throat...they make just an adapter plate to adapt the Weber dual throats to the Solex manifolds. Can't recall of the Solexes had "chokes" but I'm thinking that they didn't.
Brian
Weber's manuals refers to the throttle plates themselves as "chokes" in some places. See page 92 Item 19 of Bob Tomlison's "Weber Tech Manual" available from CB Performance in Farmersville, CA.
In other places they call the venturi a "choke" see page 94 item 9 of the same book.... so they are as confused as me....
I believe the real answer is the venturi is what Weber calls a "choke".
In other places they call the venturi a "choke" see page 94 item 9 of the same book.... so they are as confused as me....
I believe the real answer is the venturi is what Weber calls a "choke".
Weber venturi, throat, barrel, choke, air-hole(?). Ain/t the English language great? Maybe this is what happens when a good carb gets used in different countries all over the world? I've been involved in Configuration Management (document control) in eight different industries, and the same words certainly do have different meanings in different industries. Oops, in this case different words seem to have the same meaning. Now I'm thoroughly confused . . . .
I can't wait to see the first Idiot's Guide to Chinese cars.
I can't wait to see the first Idiot's Guide to Chinese cars.
WOW this is a fun one.
Ok a "Choke".....Chokes the engine of air, therefore enrichining the mixture to let the engine warm up faster. The throttle plates/butterflies meter the amount of air entering the carb throats. Usually chokes and butterflies are two completly different plates. WEBERS DO NOT have the traditional chokes.
BTW the Venturis are the structures in the center of the carb barrel. They act in increasing the air speed within the carb throat, which creates a lower pressure of air enabling the fuel to be sucked by differeential pressures into the throat.
Whew I hope this helps.
D
Ok a "Choke".....Chokes the engine of air, therefore enrichining the mixture to let the engine warm up faster. The throttle plates/butterflies meter the amount of air entering the carb throats. Usually chokes and butterflies are two completly different plates. WEBERS DO NOT have the traditional chokes.
BTW the Venturis are the structures in the center of the carb barrel. They act in increasing the air speed within the carb throat, which creates a lower pressure of air enabling the fuel to be sucked by differeential pressures into the throat.
Whew I hope this helps.
D
choke this....
That Vince is a BAD influence! Bwaaa Haaa Haaaaa!