A couple of weeks ago I asked if anyone knew of a 2 barrel 2 stage carb. Any body got any info?

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1922 dodge roadster

Holley made a 2BBL, 2 stage carb, Model 2305 I believe, which I understand is a bit rare to find now. Direct Connection used to reccomend it as a performance slant six carb.

Besides that, several people have had success with junkyard finds on staged carbs. Do a search of this board and see what comes up.

-Mac

Look for a Ford Pinto in the JY's. Or if you got bucks, buy that same carb new. Not sure which one it is.

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ifyoubegintothinkyou'relosingcontrol...it'salreadygone

The Pinto carb is a Holly, pretty much a copy of a Weber but cheaper. GM also used a variation of it in the Vega.

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David Kight
'62 Valiant Signet, White
'98 Dodge Dakota
'06 Jeep Liberty

Growing older is unavoidable but growing up is strictly optional.

I would like to see someone try that Pinto carb. I think it would be excellent if you could get it tuned. Years ago I had the 2305 on my slant, and it worked pretty well, but I never could get the accel pump timed just right. It is basicaly half a 4500 turned sideways. I sold it to Reed, and he has it now. Maybe he has worked out the accel pump thing. You could ask him. In any evernt, I think the Pinto carb is probably not as flexible, but overall simpler to get tuned, and likely holds its tune better than the 2305. I have never been a fan of the basic 4500 style Holley cabs. I know there are guys that swear by them, but mine always seemed less stable than the Carters. And the 2305 is based on that carb. If I were doing carbs now, I would go with the dual stage Webber.

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Holley 2305 in 350 and 500 cfm variety

Holley 5200 (pinto/vega carbs) Weber knockoffs.

Maybe someone could recommend a different variety like Solex or Mikuni?


-D.idiot

My son has a Mazda B2000 that has a good running staged two barrel, I havnt looked into it but they may be a possibility, and easy to find. It looks like it may be a Makuni or Solex type but I am not sure.

Jess

<shudder> You're giving me scary flashbacks! I once had a 79 B2000 (worst vehicle I EVER owned). A big part of what made it horrible, apart from the suspension that was always falling apart, was the Mikuni carb. I wouldn't put one on a slant-6 that I was going to drive myself if you paid me $5000 to do it.

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The Mercury Capri used a staged two barrel on the 2600 and 2800 v-6 cars around 70-74. I don't remember if it was a Weber or Holley copy but the car was made in Germany, so probably Weber. I had one and it ran really well. I have no idea what the cfm was but my 2800 pulled strong past 5000 rpm. Neat little cars aside from the front suspension.

Ours is a 85 model, I dont know how much diff that is but we have around 200,000 on the truck & it runs like a top. The truck was bought new in our family and the carb has never been touched from the day we bought it. Which the engine has never had any work either out side of timing belt & regulor work that is needed. This truck gets run hard to, I am always taching it up good just going places. I plan to do a build on the engine this winter & add a small turbo to get around 250hp and use the factory carb. Thats the only thing I have against the truck is it needs more power, but hey its not a Mopar so you cant expect much.

A Makuni carb is a good piece, but a bit complicated to rebuild and get set but if you know what your doing its not to bad. Some of the Toyota had a good little progressive two barrel that was probably a Makuni. You can pick these carbs up cheap most of the time, a new webber is a pretty good chunk of change & if you was going to run two of them you have paid out close to enough to have EFI. A carb can even give better fuel milage than a EFI, if it is setup right. And you dont get this by just changing jets or the normal stuff that most are use to doing. The best setup I ever saw was a hybrid that ran a carb with a EFI. The EFI handled the idling & the enrichments that the Accelerator pump use to do, then the carb did the rest until boost got to a certain level & then the EFI added the fuel needed to go with the boost.


Jess

The Weber 34 ADM is reportedly an effective and economical staged carby for the slant. American availability may be a problem, it was used on Aussie straight six Fords in the early 80's (3.3 & 4.1 Litres)

I have one in the shed waiting for me to get motivated.

Hey, that line is kinda funny. At least until I remembered how many projects I have waiting for my motivation.

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1974 Dodge Dart Custom, 225, 904, now with a Holley 2300...

Here is an odd thought. How about half of a 625 cfm AFB? You would have to seal off the right side bores, fuel inlet, bowl vent cross-over, accel. pump, make sure the timed vaccum for the advance is on the right side and lighten up the secondary air valve. It sounds like a big project but blocking the fuel and accellerator squirter could be just a matter of using silver solder. The dead side would need the throtle bores closed off top and bottom. You could even get a stub stack and seal off the dead side with a urethane compound to smooth things out on top.

some days ago I posted a link to an ebay store wich had a NOS 500 CFM 2305. Try searching for it. Definitely better than webbers...

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Juan Ignacio Caino

Please use e-mail button istead of PM'ing. I do log in sometimes but I'll be answering quicker thru e-mail.