Multi-carb Alternatives?

Recently I've been on the hunt for carbs to complete the 6bbl setup that's going on my Buick. I got to thinking... Why hasn't someone come up with a good alternative to the standard 97/94 etc. With the popularity of vintage hot rodding right now it would only make sense to have brand new carbs available that are REASONABLY PRICED (ie NOT $400 repop Strombergs) that fit the standard 3 bolt intakes and would work for multi-carb setups. There's gotta be something out there that could be easily converted. Motorcycle/ATV/Kart/Marine carbs perhaps? Something small that would lend itself well to a 6 or 8 carb intake. Is this too much to ask?

I know they wouldn't look vintage, but I honestly wouldnt care if they ran great and didn't cost $1000 for six. Any ideas?

Thanks for humoring me.

 

Rochester 2g is one alternative. They're 4 bolt base, easy to redrill your manifold or buy/make adapters. Cores can usually be had for about $25 or so, and kits are $10 or less. They take modification to run progressive, but it's not difficult.

 

I think you may be on to something here, and that's what ole-Hot Rodding is all about. Let's keep this alive and see if we can get some of the Carb-guys to chime in here.......

 

There was a Kustom in Speed N Chrome at Paso with a brace of Del orto's (sp) looked o.k. too, Rochesters are the best bet, still good enough for period 50's stuff too.

 

It just seems to me like we need something like the 97 was in the day... Available new, , cheap, functional and so common they were literally disposeable.

 

"Today and Cheap" .....unless they are made in China, ain't gonna happen.

Were gonna have to hit the junk-yards and get all the 2bbl carters and rochesters we can find.

 

It's about time for someone to revive the "Scott 97" injector. Immediately, you can replace 97's or 94's. On a 3x2 run one carb and two Scotts; on a 6x2, run two carbs and 4 Scotts. Here's a great site, but more focused on the Scott blower injectors: http://www.scottinjection.cjb.net/

Let's hear about any experience you've got with these weird guys.

 

i would love to see a lot of Amal monoblock mc carbs on a setup..........Marq

 

I've seen anything like 'em before.

Thanks for the link so I can learn about them.

 

Hey thats cool.

I was just looking at some of these on the flatty intake thread and wondering what the hell they were all about and now theres a website!

 

Text from original data sheet (the scanned image is damn hard to read):

Scott 97 Fuel or Gas Injection - $24.95

This injector is designed for gasoline or alcohol nitromethane fuels or any alcohol based fuel. It is designed to use regular Ford Stromberg jets.

This injector is designed for fuel pressures from 2 to 7 PSI. A pressure pump may be used is a fuel pressure regulator of 2 to 7 PSI is used between tank and fuel block. Always use shut-off valve between tank and fuel block, unless you are using progressive linkage. This injector is designed for street or racing. When mounting the injector use winter accelerating rod pole for metering valve pole.

Street Use
For street use, straight injection is nor practical because slow speed driving in high gear will cause it to load up. The reason for this is the fuel flow is controlled by the metering valve in direct relation with the ****erfly opening and not the air flow as in the carburetor. For street use we recommend two injectors with a carburetor in the center and progressive linkage so injector comes in at half throttle. This gives good low speed performance and plenty of breathing when it is needed.

Drag Racing
When running gas in drag racing machines we also recommend carburetors with injectors. On three carburetor manifolds, use two injectors, one carburetor. Four carburetor manifold, two injectors, two carburetors. Siz carburetor log manifolds should use two carburetors and four injectors with transmission jobs. Four carburetors and two injectors with high gear only machines. When running fuel (alcohol nitromethane) straight injection can be used with maximum effect. Although in high gear only machines, using log manifold, four injectors and two carburetors will give a better all-around air-fuel ratio due to the extreme RPM range.

Fuel Systems
A constant pressure is necessary. For drag racing you may use a pressure pump to pump a small tank to 30 PSI and have a pressure regulator between this tank and the fuel tank, set regulator from 2 to 7 PSI. This will keep a constant 2 to 7 PSI in fuel tank.

For track or drags you may use a pressure pump to pump fuel tank to 2 to 7 PSI, then use engine fuel pump to pump air to tank, this will keep a constant pressure in fuel tank.

For street, drags or boats you may use any fuel regulator that will allow a fuel flow of 30 gal. per hr. Use one regulator to every two injectors.

Electric fuel pump may be used if pump will pump 30 gal. per hr. or more. For best results use engine fuel pump to fill a reservoir with a volume of 6 cu. in. Mount electric pump next to reservoir and use a large capacity fuel block.

A fuel pressure gauge should always be used so you can be sure fuel pressure is not dropping off.

(If someone can Photoshop a clearer copy of the fuel system schematics it would be helpful).

Idling
To adjust idling loosen lock screw and turn metering needle CCW for richer mixture, CW for leaner mixture; tighten lock screw firmly.

Fuel Flow
Tests show this injector not using a jet will p*** 17 gal. per hr. at 2 PSI fuel pressure; 26 gal. per hr. at 6 PSI fuel pressure; 34 gal. per hr. at 10 PSI fuel pressure.

These units were made to be bolted onto a Stromberg 97 base casting/****erfly. Would really like to see some closer illustrations of how it works. In the late 50's a West Coast flathead powered rail set a record in the 10's using Scott injectors.

 

I'm doing something different with my 225 ci slant 6 motor going into my 51 Plymouth. I will use just three Carter/Weber 2 bbl progressive carbs. They are available new for $85.00 or a half dozen for around $500.00. Thats what one big Weber costs. I don't see why you can't use 6 on a V-8. I had to make a plenum intake manifold for mine. Six would take some measuring between bases to check clearanaces and some creative linkage, but doable.

These are available from Langdon's Stovebolt web site. He's got linkage and adapters also. Do it and you will have something nobody else has thought of on a V-8 and the drivability is ages ahead of Rochesters. Oh yeah, a good cam would make them really work.

I guess I should mention that these are the stock carbs found on early 80's Ford ******s, just in case you want to look in bone yards for used ones. The stud pattern is 2"x3-1/2". If you want overall carb measurments let me know.

 

Now thats what i'm talking about ,they look pretty cool to me .I looked on the web site but only saw the ones with leccy choke ,yours seem not to have that.Do you know what cfm they flow?are they one size fits all kind of deal with the jetting ?................Marq

 

What I have in mind is a readily available non-automotive carb, like something off of a tractor or ATV or anything really... All it would need to be is a downdraft unit with an accellerator pump. Something currently in production that isn't automotive and therefore doesn't carry the hot rod premium price tag. Then, just make adapters to standard 3 or 4 bolt intake patterns, and rig up some linkage. Doesn't need to be a two barrel even, as usually 6 carb manifolds are a little over-carbed anyhow. A big single barrel would get the job done and likely run better overall.

I plan on running 94s, but why should we rely soley on 40+ year old cores? It's just really silly that you can't get a good running modern carb for these engines.

If I can find the right carb i will seriously consider making the adapters and trying it out.

EDIT: And it needs to be able to accept standard 97/94 velocity stacks/frogmouths/air cleaners (or at least come close so they can be easily made to fit)

 

"Now thats what i'm talking about ,they look pretty cool to me .I looked on the web site but only saw the ones with leccy choke ,yours seem not to have that.Do you know what cfm they flow?are they one size fits all kind of deal with the jetting ?................Marq"

Well, chokes are not a bad idea. My original plan was to use the electric choke on the center carb, so I took off the other two chokes. I discussed this with Tom Langdon and got an *** chewin, so now I will run all three chokes. You could remove them but driveability suffers.

Don't know the cfm rating but the ****** is a 4 cyl motor. Jetting on the new carb is correct but if you run into problems, Tom can help you with jetting changes. Running 4 or 6 might need a re-jet depends on what size V8 you run. I'll be running three carters on half of a V8, so a 350 could, theoritically(?) take 6.

 

Those are pretty cool but as a smogger carb how hard are they to adjust?

Dawg

 

"Those are pretty cool but as a smogger carb how hard are they to adjust?

Dawg"

I don't know what Tom has done/didn't need to do on the carb before shipping out to customers. Most of the vac*** ports are just capped off and not used. What you have left is fuel inlet and dist vac port along with the electric choke wireconnection. I'll just use the Ford Motorcraft tune up instructions for this carb.

 

I work on aerial lift equipment and the older machines have 2.3-2.5L Ford industrial engines with Zenith one barrel carbs. I have rebuilt many of these simple carbs and I think they'd bolt right on intakes for 2-bolt carbs.
Not sure how the thottle response would be on a HOT motor though.
BTW: If I remember right they're cheap!

Josh

 

I'm kind of in the same boat as everyone else here, as I too want to run multiple carbs on my T-bucket. It will have a small block Dodge, and all that is available is the Six Pack, and to build one costs a fortune.

 

You could probably convert a VW style car like this to perform good in a multi carb setup:http://cgi.ebay.com/ebaymotors/ws/e...ssPageName=MERC_VI_RSCC_Pr4_PcY_BID_Stores_IT

And they can be had for a dime a dozen

Drew

 

Old thread, but I've been thinking about running a six or 8 pack of 1bbl Carter YF's or Holley 1904s on a log intake for my 392 International engine. Any thoughts?

jn6047

 

Btt

 

Speaking of 1 bbl carbs, look at a VW catalog or magazine for 'baby' Webers. 34mm ICT carbs. The carbs themselfs are very reasonably priced, easy to set-up, available w/wo choke and parts are readily available.
Solex/Brosol could be another alternative. All carbs are 2-bolt.

 

Has anyone looked at pre fuel injection Volvo Carbs? They are kind of like a bike carb with a round slide.......

 

Mooneyes came out with an EFI system based on the Stromberg throttle housing, that looked pretty promising. Can't find anything about it, now; anybody got any info?

 

There has been thread about the Mooneye injection ripoff here a very touchy subject.

 

The Solex/Bosol carbs are still $100 each. I think until the 94 becomes scarce, it will be the "standard" hot rod carb. I've got a whole self full of usable 94s and I've never paid more than $25 per carb. Even at the muscle car swaps around here one or two guys are always selling good 94s pretty cheap.

 

Stromberg WW are a great alternative 2BBL. They came on 40s to early 70's Buicks, Pontiacs (most GMs) MoPars and I believe some Fords too. They rasnge from 250 to 275 cfm depending on which carb you have. They are a 4 bolt base carb like the Rochester 2G, but as mentioned, adaptors are easy to find.

Cheap to buy, plentiful, and easily tunable. I rebuilt mine, kits are cheeep, and they perform real good. I run a 2x2 on my blown flathead....they work killer.

Rat

Rat

 

In 1972 Pinto ran a nice internally progressive two barrel.
It carried on to other years.

One barrel rolls in to the half way point and then the other starts to open.

Nice little carb, I think Holley made them.

Only thing to look out for would be the nitrocellulose floats that become fuel soaked and drown after a while.
I don't know if you can get br*** floats for these or not, but parts houses used to carry replacement nitrocell floats.

Throttle linkage could be a little more complicated than a 97/94.
But . . . with the internal progressive....

Besides, what's one more challenge to a hot rodder?

 

I've had some success collecting up a set 50's carter wcd carbs. Some good cores under $20, but some folks on e-bay think they are made of gold. They came on tons of different cars. Same bolt pattern as a 2g. Earlier and later ones seem to have a 3 bolt, or a larger pattern 4 bolt. Some were designed to be used 2x2, I think. I believe they can look nice, and maybe period correct, but I'm new to some of this and have not seen a lot of folks using them (FNG).

1.5 cents

Kinda expensive FNG lesson : there is a great variance in these carbs as far as height, linkage, CFM ect = Tricky to collect a matched set.