Carbs

[bmcgc1960]

I realy wasnt sure where to post this...

I was at the P-N-P the other day and saw a 60s Jeep truck with what looked like a V6 and a big 1v carb.

I was in a hurry and just glanced as I walked by but that looked like a lot of engine to have a 1v carb sitting on top of it.

Im guessing it was a YF.

Any value to picking it up when I go back tomorrow?

 

[Asa]

I have seen several 2bbl carbs that, externally, look like 1bbl carbs.

Might be a decent thing to grab, depends on the model.

 

[xctasy]

The "Dauntless" 225 engine is what it is, mit Rochester 2 jet! That's a 2-bbl carb that looks like a

a 1-barrel Holley 1904-1908, or
a YL or RB series Carter, or
a Bendix Stromberg BXV 1-bbl or WW 2-bbl

Internally, its a Holley 350 or 500 2-bbl, with the same spacings for the barrels, but its wrapped in a compact body, with small Ford V8 sidevalve/flat head stud pattern, so its really compact and its very easy to pass over it in any junkyard. Its versatile.can run in a 428 GTO in triple carbs, or a little 186 to 194 cube six in line or a big 402 V8.

Flow ratings are 369 cfm to over 400 cfm rated as a 2-bbl depending on the version.


and it also fits that little 225 cubic inch Jeep V6, ex 62-63 Buick/Pontiac V8 in iron, with two cylinders lopped off. Oddest oddfire around


Gotta love the Appliance Motor Company, used the best stuff from the big three to feed No. Four.

Later, they used Ford carbs, ignitions and BW gearboxes, then 60 degree Chevy sixes and Iron Duke fours, and then became a Mopar benfit match.

The Rochester Carb is just awesome....you'd be suprised just how good it is, and what you can mount it on!

https://plus.google.com/photos/10445692 ... uOqc0oeDZw

 

[nickstewartroc]

What size inlet does it mount to, do you know by chance? Sounds really interesting!

 

[bmcgc1960]

The carb was gone. It was a 2V, at least the holes in the manifold had 2 holes in it.

 

[xctasy]

What size inlet does it mount to, do you know by chance? Sounds really interesting!

Ooops, according to http://www.earlycj5.net/forums/showthre ... 2g-year-id. The Dauntless 225 actually did have a 1-bbl carb for 1965, despite being a odd fire V6. After that, it got the good old 2C from 1966 to 1971. It wasn't a good set up, the 2GC 2-bbl was a much better set up.

Taken on its own, the 1BC was a good carb, and on our little I6's, one of the best around but not on a 225 Jeep V6.


Grab it! Its a straight bolt on to a Ford small six, as long as the studs mount up, and it flows very well. Its 167 cfm rated at 1.5"Hg, and 236 cfm rated as a 1-bbl carb at 3"Hg. It out flows any Ford 1-bbl carb ever made. It's stone age and anvil simple

There are notes here on it.

viewtopic.php?f=1&t=67537&p=517122&hilit=chevy+carb#p517122

Back to the 2 Jet.

Small and large base 2 Jets exist in seven cfm ratings from 1955 to 1979. Normally its base width varies from two sizes. The original “early” size has center to center stud dimensions of 1 7/8” x 3-¼”, and a bore size of 1-7/16”. The larger base stud dimensions are 2” x 3-¾”, with a bore size of 1-11/16”.

Model 2G: 1-1/4-in. flange, 1-7/16-in. throttle bore,
1-3/32-in. venturi, 278cfm at 3.0"Hg (280 and 290 for Olds J2 371)


Model 2G: 1-1/2-in. flange, 1-11/16-in. throttle bore,
1-3/16-in. venturi, 352cfm at 3.0"Hg
1-1/4-in. venturi, 381cfm at 3.0"Hg
1-5/16-in. venturi, 423cfm at 3.0"Hg
1-3/8-in. venturi, 435cfm at 3.0"Hg

The early Chevy 265 and 283 ci's had the smaller 278 cfm carbs. The 352/381/423 and 435 cfm 2Gs were used on the Chevy 400, and 'BOP' 455 engines in the early ’70s.

For the Tripowers and 3 by 2-bbls in Olds, Chevs and Pontiacs, the early small centre base 278 cfms carbs were moddified in special 290 vac secondary ends and 280 cfm center variations. For other applications, the 435's were used as mechanical 3 X 2-bbl outers, and with the 352's as the centers for 59-66's or 381's for the just the 64/65's Pontiacs. In all applications from 1957 to 1966, the outer carbs had no idle circuits and were true slaves, and rare, but all the other most common 278/352/381/423/435 carbs are fully equiped.

Early Rochester 2C 2Jet. 4 stud base size 1 7/8" x 3-1/4"
Later Rochester '2G' 2Jet is a Stromberg WW and 273/318 Carter 2-BBL carb duplicate. 4 stud Base size 2" x 3-3/4"
Ford 2100 and Ford 2150 series/ Holley 2-bbl 350/500 cfm 2300 series. 4 stud Base size 3-1/2" x 5-1/8"
Holley/Weber 5200/ Weber DGAS/DGV. 4 stud Base size 47mm x 93mm, or 1.850" x 3.661"

This one fits all three



This one shows the Ford 2100 and Ford 2150 series/ Holley 2-bbl 350/500 cfm 2300 series on the outside, and the little 2G "2Jet" platform size on the inside.

See also http://classicinlines.com/logmods.asp

*Mike at Classic Inlines looked at the smaller Ford Flathead 221/239 V8 2-BBL 3 stud Stromberg 97, Holley 94 2-bbl EFI throttle bodies to do this, very compact, way ahead of just a Rochester 2Jet. The 2 Jet is similar to the 3 stud Flathead carbs in size, and opens a whole bunch of options. 3 stud Base size 1- 7/8" x 3-1/8"