Csp linkage rods to short for 2276

[jpaull]

I have 2 sets of cross bar linkage using bearing kits. I installed these with brand new crossbar linkage cause its the right thing to do from the start. The plastic bushings are garbage but the steel hex bar is a great design as it runs true throughout the rpm range regardless of cold or hot. I can get the down rods at the exact same angle, it really makes a difference as having both banks of cylinders opening 100% simultaneously sets apart a smooth revving engine from a not so smooth one. I also re-drill and tap all the linkage arm/throttle arm set screws to larger 8mm.

If someone can explain how a bell crank linkage with linkage rods at different angles can open the carbs at the same rate im all ears though.

[chrisflstf]

Thats the problem with center pull, if the angles are different, the carbs will never be in sync. Mods to fix it would help, but not look ok. Crossbars have their own issues. They all can be made to work better if not good. Thats the downfall of most dual carb setups. People settle for - it runs good

[Alstrup]

The bearing upgrade on the regular cross bar systems is a very good investment. Personally I use bronze bushings most of the time which is a cheaper solution. (On the CB linkage) They typically last 18-25000 miles dependant on enviroment. Then yank the bushings out and press new in and youre good for another 20000 miles.
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https://www.thesamba.com/vw/forum/viewtopic.php?t=435993

[Ohio Tom]

The error in a bell-crank linkage is no better/worse than a crossbar style.

Manifolds are offset to some degree, thus making the cross bar less than perfect.
Add in the crappy bushings, and mounts and the dumb, long, flexing arm extensions that always bend and they don't win my vote..
How many times has someone floored thier cross bar linkage motor only to have it bend the arms.

The bellcrank is a Pull/Pull style. they naturally stay in-sync with warmups. The heads grow equally, The arms are long and therefore any angles are not great in most installs.

Manifold style and height can play into ANY linkage design/style.

To each his own...

[HotStreetVw]

I've run the cross bar linkages but they seem excessive, clumsy/ugly. How about a Berg mounted using the wrong fan shroud holes? lol The Berg does look cool though if done right.

My vote goes to the CSP bellcrank. Simple design. I've made several modifications to mine. Carbon rods, cut and turned off the bell crank and made my own to get more travel to support longer arms on the ITBs.
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4inBhore
50 Split - 2724cc NA. Haltech injected
62 Notchback - 2542cc Turbo WIP

[dntchav]

Has anyone tried the new Jaycee bellcrank the rods look twice as thick as the csp plus heim joints and one rod bent to equal out any angles ?

[dntchav]

Looks like it solves the angle issue but $250-$275 it better

[dntchav]

Looks like it solves the angle issue but $250-$275 it better

[sled]

there is absolutely no way that linkage solves any of the sync issues. having the rods be radically different lengths doesn't help, and putting that dogleg in the rod helps it clear the alternator stand, but it doesn't change the effective angle of the rod when installed.

every linkage style has its shortcomings and its benefits for performance, except the synclink which works 100% correctly.

...its only drawback is its aesthetics, oh and cost for some.
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drive your split.

[jpaull]