carburetors

Yep....   Using the correct manifolds....   There are a few rare species that raise the carbs to extereme heights....  If you are buying a standard "kit" from CB Perf. or other vendor state your purpose....  A standard VW type one set works in a Speedster with a type one engine.

Most IDF/Dellorto manifolds are about 4 1/2" high. You want to stay away from CB's big beef manifolds (quite a bit taller)

I recommend CB space saver manifolds. They may or may not have interference with the shroud and you might have to get a different linkage than what comes with the carbs. The reason for my recommendation is these manifolds turn the carbs around so the idle jets and idle mixture controls are on the inside. VERY important in a Speedster! I have these manifolds in my Spyder due to the frame rail running right next to the carbies.

Danny has a valid point....  Well worth the additional costs, if any....

Are you running a full width or 36hp (round) shroud?

Or you can do what I did.  I cut the floor plate (fiberglass on my car) that surrounds the engine (and has the rubber gasket connected to it) into three pieces, so the pieces by the carbs can be removed.  It make taking the carb manifolds off and changing the back plugs MUCH easier.

ALB: I have a 911 shroud so IDK about doghouse/non-doghouse. I just HATE the fact that every Speedster I work on requires contortions to get to idle jets and mixture controls! All controls on a Weber are on one side, why do they usually face out? These manifolds make the carbs two inches narrower, so the linkage is shorter. CB will sell you the whole kit with carbs and linkage too. Manifolds only, $69.95, what a deal:

http://www.cbperformance.com/P...asp?ProductCode=3267

FYI, Jake welded and match-ported my manifolds for the big heads. For those that want to leave their carbs alone, John at aircooled.net sells access hatches for the rear fender well, similar to what I think Carl Berry installed(doggie treat jars?).

Joel, if you need some setup help, let me know.

Thanks everyone for your input. I plan to order carbs & manifolds  this week.I will let you know my progress.

Joel

hmm,

my cmc-bodied ride can easily drop the engine fully dressed (ex: with carbs/cleaners / linkage).

i know I've done it a hundred times.

I believe the stuff CB Performance sells is great quality; in my case I'm using Dell 40's with the OEM doghouse VW fan shroud and they fit perfectly using CB Performance's regular manifolds, air cleaners and linkage system.

I am sure the regular manifolds fit just fine, I just don't understand why everyone wouldn't want the carbs switched around for easier access. 

I finished the installation of the dual Weber 40s tonight.I took DannyP's advice and got the spacesaver manifolds from CB Performance. It was a tough installation as everything was tight-it probably would have been quicker to drop the engine down but i didn't. CB provided a very nice linkage kit.  

Anyhow I started it up in the garage and when the secondaries kick in the engine screams and sounds good. The primaries and linkage need fine tuning-I may take Danny up on his  offer.

It was too cold,too dark, and too late and I was too tired to take the tub for a ride so it will have to wait until later in the week as i will be busy at work. I am having a good time with this car.

Joel

Ok Joel, sounds good. Do you have a snail? If not, get one, you'll need it.

I got home early from work today so I adjusted the dual webers 40s. There isn't much room to reach the rear idle mixture screws so it took awhile. Danny-I haven't gotten a snail yet so I did it by ear. I was working outside and it was below freezing so my hands got numb even with thin gloves.

I took the  tub for a ride-what a difference over the whimpy single barrel Empi 34s.The car now has balls-it left rubber in 1st and 2nd. I'm sure it needs more adjusting but I am very satisfied. My next project is to install the cylinder head temp gauge. Looking forward to Carlisle.

Joel

Joel, the snail really is a great investment. I know some guys can do it by ear, but I like to read the needle to make sure it is dead on. Once your air is dead on, then you can adjust the idle mixture and speed. The snail really helps you get your balance from one side of the engine to the other, both at idle and at 3000 rpm. You won't believe how smooth it can be once set right. 

After several adjustments on my new Weber 40mm IDFs I took the car out today for a test run (engine built up to 1915cc with 110 cam heavy duty pressure plate stock trans) Danny-I ordered the snail that you recommended but it hasn't arrived yet.

The temperature was 31 degrees F. and I drove up the Palisades Interstate at 50-70mph taking it up to 80 a few times. I then went into Harriman State Park where the speed limit is 40 and I almost stuck to that. I did about 80 miles total and the engine performed excellently. It accelerates smoothly, no flat spots and has plenty of power. I do have to drop down to 3rd more than I used to but no big deal.

My only concern is the gas mileage-I used to get in the high twenties and occasionally 30mpg on the original no name dual single barrels. I am now getting less-the tank wasn't filled so I could not check it but the gas gauge needle seemed to drop pretty quickly and it did smell rich. The webers have 1.30 main jets and .55 idle jets. I  have adjusted each idle circuit several times and synced the carbs and have the linkage adjusted. Any thoughts on how to improve the mpg ?

Looking forward to meeting as many as possible at Carlisle.

Joel