Manx Club

I was talking to the guy at a local buggy shop, and he said Weber filed for chapter 11 backrupcy. He said Empi was then producing them, but they had issues. Anybody know anything about this? Also, is there much difference in performance between the Webers, and Kadrons?

I didn't know they had "chapter 11" in Italy? As long as I can remember Weber has had financial and or labor problems. Who really knows what goes on there? Kadrons are a good intermediate performance carb but they can't compete with the all out performance gains you get from a set of IDF's or IDA's.

Thanks Jerry, Another dumb uninformed question. What`s the difference between the IDF`s and the IDA`s ? I`m planning on building (or having built) a 1914cc engine W/ Engle 110 cam. I`ve heard the dual 40`s would be best for that engine. I`ve also heard the dual 44`s is the setup to go with. Which one would you say is correct ? Since these are pretty costly, I want to get it right the first time, without robbing performance.

from what i was told you will get better low end power with the 40's not sure if you would need 44's i have a 2275 and i was told the 44's are good for it but if i wanted more lower power to go with 40's but i do get more high end with the 44's I wish they had 42's

This is the first time I've heard anything about bankruptcy. I know they were on strike for quite some time. I remember looking into getting some early last summer and the prices had sky rocketed to like 1500 each. So I decided to stick with my dells. I don't really think they filed. maybe I just don't want them to so I don't want to believe it.

They started making them again in Spain. Has been many years since being made in Italy. The only IDA size Weber available today is the 48mm. Mainly for serious power. The IDF was used on Fiat cars. Most common sizes today are 40, 44, and 48mm. Throats are closer together on the IDFs then on the IDAs.

I don't believe Weber makes 40/44 IDFS carbs any more. Empi now repops them, and offers them as the HPMX series. I hear the quality is extremely nice. Also, the HPMX venturis are interchangeable between the 40/44 flavors now. The throttle shafts were also changed to increase ariflow. Check the October 2005 HotVW's issue for a side to side comparison between the Weber IDF and Empi HPMX. Dyno sheets don't lie, but take everything you read with a grain of salt. The HPMX's made more power throughout the RPM range... With that said, I haven't read anything BAD about the Empi HPMX. I haven't gotten my mitts on a set yet, but wouldn't hesitate to try some. They're definitely a bit less expensive than the genuine Webers. Kadrons are budget dual carbs. Quality between them and Webers/Dellortos is not comparable. My opinion segment: SeaBeeBuggy, that big stroker needs to breathe. I wouldn't put anything less than dual 44s on there. The STROKE of your engine should provide plenty of low-end power. Reverb: 48IDA's should be considered racing only. They have a weak progression circuit and can be difficult to drive unless tuned to perfection. They are OFF or ON carbs. In my opinion, I'd opt for the bigger (44IDF or HPMX) carbs and put smaller venturis in them if need be, depending on your valves, heads, etc. You can always size them down, but not UP!

I would go with 44idf's, the venturies can be changed to make them the same size and perform the same as the 40idf's but then you have the option of having a larger carb if your needs ever change. New 44idf Webers are still available, they are a bit more expensive the EMPI HPMX carbs but the money isn't going to China. I would bet years down the road the original Webers will retain their resale value much better too. What heads and valve size do you plan on running on your engine? How do you plan on using the buggy? I'm running ported big valve heads and 8.3:1 compression with dual 44idf's and a Web Cam 86B cam. in my 1914 and it has a ton of low end grunt and pulls strong to 7000rpm. and still gets 27mpg on the highway. I think a 110 cam it a bit too small for a 1914. :2cents:

I`m getting the big valve heads with the stainless steel valves. The next step up from a 110 cam, would probably be a 120, or 125.

what about singles? anyone running singles on their buggy? was thinking of upgrading from stock but not to duals.

My body was originally made for Corvair power. It doesn`t have the cutout in the rear like the Manx does. A single Weber sticks up too high (about 4 inches higher than the fan tin) for my buggy, which is why I want to go with duels, which sit nice and low, and will fit nice under my body.

[QUOTE="Reverb"]I`m getting the big valve heads with the stainless steel valves. The next step up from a 110 cam, would probably be a 120, or 125.[/QUOTE] I'm not a big fan of Engle cams. Once you look at a WebCam you will see why. Checkout the selection from Web Cam http://www.webcamshafts.com/volkswagen-auto.html

[QUOTE="90volts"]what about singles? anyone running singles on their buggy? was thinking of upgrading from stock but not to duals.[/QUOTE] Single dual barrel downdrafts? I have, and wouldn't do it again. You may get a bit more top end, but driveability suffers, and fuel mileage goes out the window. Most problems can be tuned out with jet selection, tuning, venturi swapping, but it just wasn't worth the trouble (for me). Good intake pre-heat is a must. They're also a tight fit in a buggy due to thier height. I needed to cut the body to make mine fit. This was on a 1970 Empi Imp. What a dillweed. Duals are the way to go. Even small single-barrel duals (icts, Bell FRDs, etc) will wake up a stocker.

[QUOTE="90volts"]what about singles? anyone running singles on their buggy? was thinking of upgrading from stock but not to duals.[/QUOTE] A good friend of mine is running a single 44idf on his 1835. It pulls like a tractor and still has impressive pull on top end. You give up a little fuel economy with a single Weber. Tuning is a little more difficult but not that bad as long as you remember to drill the accelerator pump squirter nozzles out to 75 or 80 from 50 or 55, before you start jetting the carb.

I run the single dual Dellorto DRLA 40 http://www.racecar.co.uk/dellorto/carcarburettors/drla.htm with the update kit. It idles like crap before and after the rebuild until it warms up and always has however it runs awesome under power. I will have to say Yeild the advice from UB on the gas with a single dual......GLUG GLUG GLUG..:drinking: