2X1X2

[Anonymous]

Okay, it's been awhile sense I've posted anything about my independent runner setup. It started out as an experiment in "how much mojoe can I get out of this log?". Now it's more like, "how complicated can I make this experiment?"

I've followed alot of Deano's research and responses regarding the use of an independent runner system on our I6's and deceided to give it a try with three Webers'. Not single venturi's, no, 2 bbl progressives to be exact.

Well, after running into head problems (lol), I finally could see the finish line. But that's when time sllllllooooooowwwwwweeeeedddddd ddddddddoooooowwwwwwnnnnn.

The log is almost done. But I'm having a bear of a time with linkage. Maybe someone can give me some hints.

Picture the "log" ...angels singing in back ground... anywho, the log. I have mounted two funnel adapters to the log and plugged the middle factory hole (I promise to post pictures tonight). I wanted to directly mount the Webers but considering they are progressives, I didn't think it would matter that much - except at WOT which wouldn't be seen much in reality. So, there you have it...got it?

Now, linkage. HELP!!!!!

For those of you who don't know, the 32/36 throttle rotates forward if mounted sideways on the log (fuel bowl facing the valve cover). Actually it's more like up and forward. I was thinking about going cable throttle but I'm not sure if that would work because of the throttle action.

Ideas? Thoughts?

Anyone want to finish it for me? :roll:

 

[CobraSix]

Cable throttle is the best option.

Mount it to pull from the front of the engine to pull straight forward. It shouldn't make much difference on the initial up motion on the plates.

But, that will keep you from going progressive, unless you used some sort of extension on the center carb throttle plate, and then mechanically connect the outer carbs to the center carb (either from cable or fixed, but run it from the center carb, not the cable).

Just my idea.

Slade

 

[WhitePony]

Hmmm... with the 2bbl carbs that are ALREADY progressive, how would a progressive linkage work anyway? Seems like if you could make it work, you would have SIX levels of progression!

 

[CobraSix]

Forgot that detail...you're right, just straight pull.

Slade

 

[Anonymous]

So, I think the cable linkage will work best just as Slade described. But for now, I'm going to setup just a center carburetor to get the car running. I'll have to save up for the cable linkage.

Just thought I'd throw that picture in... :roll:

 

[Anonymous]

wow, cool carb set up!!

Should fix the mixture problems that cyls #2 and #5 seem to have.

Running yet??

 

[Anonymous]

Didn’t you have a single Weber hooked up via linkage? With some longer linkage, You should be able to reach the rear carb. Then you run a rod that ties the two carb linkages together. You might have to fashion a little bracket to attach another ball stud or pin and clevis type hook up on the rear carb.

If the angle is too awkward to work, you could mount a center mounted “Jack Shaftâ€￾ on the old center carb studs. This would probably have the best geometry since you could make it match the stock geometry of the 1 bbl carb. That way, a center mounted crank would pull the front throttle plate linkage and push the rear carb throttle plates open.
I will P.M. you a sketch if you would like.
Doug

 

[ludwig]

How did you mount those two carbys? Mill off a flat spot and tap into the log or weld/braze on a plate with threaded holes? Do I see a Stovebolt adaptor below them?

 

[Anonymous]

Not running yet Linc. Thought I'd have some time this past weekend to work on it but that didn't happen.

Doug, yes, I had a single Weber 32/36 hooked up some time ago using aluminum angles and flat stock peices. It worked well but since my latest Weber incarnation, I haven't been able to work this one out (linkage wise).

I think I follow you on the "Jack Shaft" but if you won't mind sending me a sketch, I would help.

Ludwig, those two are mounted on Stovebolt type funnel adapters. The log was drilled and tapped for mounting the funnels. I used 5/16" dia. s.s. machine screws about 3/4" long to mount the funnels directly to the log.

The first thing I did was to grind two flat spots on the log with a mini-grinder. Next, I drilled about (16) 1/8" Dia. holes in a circle pattern to create the initial opening for each mount. Then, gently tapped the perferrated circle on the log which popped out after a few hits. Finally, I used the mini-die grinder again (generic Dremel) to clean up the sharp edges along the circles perimeters.

All-in-all, I went through 3 drill bits, 8 mini cut-off wheels and a package of JB Weld. The JB Weld was used to help form a nice flat surface to mount the funnels to (think self leveling).

But it was fun. Man, I had cast iron filing boggers for days.

 

[Inline6Merc]

what happened to those pictures of the plates with holes cut out on them laying on this intake manifold. I would like to see that pic if any one has it.

Thanks,

Curtis

 

[Inline6Merc]

i found it. sorry.

Later,

Curtis