Offy or 2v???

[66Sprint6]

I finally decided to go ahead and switch out my carb right now instead of waiting for money and an Aussie head. I have a few more questions tho.... I have seen alot about the Offenhauser 3-1v adapters. Would that be better than just a Holley 5200 on the log head or not. Also, how much are they and where do I get one. I was gonna do the 5200 and prolly still will, but are there any advantages to the 3-1v setup as far as power etc. Thanx for all the help!!!!!
Matt

 

[Anonymous]

Hot Rod Vintage Parts is the cheapest place I've seen so far for the Offy.

 

[xctasy]

My pick is either one. They both have pluses and minuses. You can't go wrong. And the all-American option lookes just as good, and has the same oooh-wow factor as the 2V.

This is just my opinion, based on some interesting tests done by AMC way back in the early 70's. Any time you go for a single point distribution of fuel in a six cylinder engine, you create lean zones. As you increase the size of the runner( eg, go for a 2V Aussie or Argie head) you loose some low end torque because of the nature of the intake manifold area increasing, and needing having a higher gas speed for the fuel /air mix not to fall out of suspension. 2V's are always a better shape in the intake and make more power high up, but there will be a tractability loss at the lower ends. The intake manifold is alloy, though, and doesn't cause pinking by having the heat stove warming things up too much like the log. As a full on performance option, it is hard to fault.

With a triple carb set-up, you have no point of distribution problems, but then need to buy a properly developed kit to ensure the fuel air ratios and linkage is right. And it's cast iron heat stove is not a winner. The intake is, even with the stove bloked off, warmer than the alloy one.

 

[CobraSix]

IMHO, the Offy would be better then the 5200 on the log head. Just like the crazy Kiwi said...better fuel distribution.

Also, take a look at your driving needs. I am probably going to switch out my Offy set up for the Aussie 2V. The Offy looks great. Gets good power. Lots of looks at shows...but is a pain to keep tuned up and running right (at least in my situation). I daily drive my mustang during the summer 80 miles round trip to work. The Offy is just too hard on the foot for that. I also need something a little more simple and reliable as my wife drives the car too.

The 5200 on the log will help your power over the 1V. The Offy will increase over that. I'll eventually let people know how the compare to one another. (Offy vs. Aussie).

Slade

 

[66Sprint6]

I am eventually looking to get into an Aussie head. I daily drive my car every single day that I go anywhere, so I need dependability and tuning as little as possible. With all this in mind, I will prolly go 2v. Another question. I have heard about some saying to go for a Holley 5200, and then others talk about a 2300??? or something like that. Whats the difference. Also, what are some thoughts on the best carb to go for when all I have done is a cliffy 6-2 header, full exhaust, rebuilt head and electronic ignition. Thanx again guys, you all are life savers for my 200!!!
Matt

 

[Anlushac11]

I have heard about some saying to go for a Holley 5200, and then others talk about a 2300??? or something like that. Whats the difference.

The Holley Weber is actually a licence built copy of a Weber 32/36 DGEV 2 bbl carb. It was extremely popular in the 70's for 4 cylinder and small 6 cylinder engines.

The 2300 is basically half of a Holley 4bbl. IIRC most models use a Holley metering block and float bowl. The 2300 was very popular on small sixes and small V8's.

Holley/Motorcraft made a 2300 style carb as small as 210cfm. IIRC the biggest is the Holley 500cfm and that one can be built to flow 600cfm.

 

[CobraSix]

If you want a reliable, tune once and forget carb, the Autolite 2100 is one of the best 2V carbs out there (If not the best). It generally has lower flow rates which are better suited for the 200 CI engines. They can be found pretty cheap.

Holleys tend to be more tempermental and require a little more tuning and more frequent tuning. But it has a little better flow rate, but it can overload a 200 pretty quick.

Slade

 

[Anonymous]

will a 2100 bolt right onto a stock 200ci manifold ?

 

[Guest]

No, you'd need some type of funnel adapter to bolt on the 2100 to the log manifold, or modify the log to accept the carb directly.

Al

 

[CobraSix]

You need the same adaptor as the Holley will. Holley 2300 and Autolite 2100 have the same foot print IIRC.

Slade

 

[Anonymous]

Speaking of Motorcraft...I'm still having problems with my carburetor linkage with the 2bbl adapted to the log. Right now I'm using an adapter I bought from Slade. Everything fits fine but the linkage just isn't working right.

I know some other members have figured it out but have also said they have experienced problems with it as well. I've basically done what Mustang Geezer did to his setup - extend the accelerator arm but it still doesn't achieve wide open throttle. I think it has something to do with the way the Motorcraft was designed for and mounted on the V8 engines.

Anyone follow?

The arm pushes up, just like to old Carter, but it looks like it also needs to move to the right some as well to reach WOT (looking from the front of the engine) .


-Chris