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-   -   Weber linkage comp 289 (http://www.clubcobra.com/forums/weber-tuning/137379-weber-linkage-comp-289-a.html)

ALF 10-16-2016 12:34 PM

Weber linkage comp 289
 
I'm getting confused.
Looking on the pictures of the competition 289 (FIA or USRRC) it seems to me the linkage is as following.
accelerator pedal - tower Pilot - rear left and right 48 IDA
This is going via a center linkage for stabilisation
Afterwards the left carb is conected to the other left carb and the same on the right side.

I'm getting now told I need to connect each of the four carbs directly to the center linkage?!??

What is correct and were can I order such setup?
Mann thanks

Bill D 10-16-2016 02:23 PM

Photo gallery

1985 CCX 10-16-2016 03:04 PM

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My guess is that if you look at 10 different cars you will have at least five different versions.
They used IDM, IDF two different intakes and some say Mag manifolds.
If on the shelf - in the car.

LMH 10-16-2016 04:52 PM

Jeff, is that original style aluminum foil? ;-)
Larry

CompClassics 10-16-2016 09:02 PM

As Jeff had stated the throttle linkage goes from the throttle pedal pivot mounted on the drivers foot box to the bell crank tower mounted on the rear of the drivers side cylinder head and then from the bell crank to the center pivot shaft mounted on the intake manifold. There were two different designs of linkage used on early opposed intake manifolds both used the center pivot shaft that was mounted in the center of the manifold and ran 1/2 the length of the intake manifold from front to back between two rod end bearings. The early setup used a linkage that ran from the center pivot to the rear or the left bank carb and then another linkage that ran from the rear left bank carb to the rear right bank carb, the front and rear carbs of both banks were coupled together with adjustable couplers. The later opposed linkage used linkages that connected to the center couplers inbetween the front and rear carbs on both banks.

ALF 10-16-2016 10:42 PM

Hi all
Thanks for your replays.

This is my starting point:
http://www.clubcobra.com/forums/pict...ictureid=15891



And this is the car I was looking on CSX 2514.
http://www.clubcobra.com/forums/pict...ictureid=15890



But as already mentioned you can find this setup as well:
http://www.wallpaperup.com/uploads/w...102c48fd2a.jpg



But what was correct and what would be better to setup and operate?

CompClassics 10-17-2016 12:46 AM

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Here is a good photo of the early setup....

ALF 10-17-2016 01:22 AM

Hi John
Many thanks for this great picture

Do you know if this is the only linkage connection to the left and right side Weber's, or if they've the same connection to the other pair of Weber's?

http://www.clubcobra.com/forums/pict...ictureid=15893

Unfortunately I can not verify it on your picture and as I need to start on ~field 1 I would like to do it correct. :)

ALF 10-17-2016 08:16 AM

Hi John
I did not see your explanation on post 5

Do you know a source for the paralell setup? With the carbs linked together per site.

CompClassics 10-17-2016 08:31 AM

Which manifold are you using, parallel or opposed?

ALF 10-17-2016 10:46 AM

Hi John
this is my setup
http://www.clubcobra.com/forums/pict...ictureid=15891

With your alternator braket :)

CompClassics 10-17-2016 10:20 PM

I'm not seeing the photo....LOL, it just loaded!

CompClassics 10-17-2016 10:29 PM

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Gotcha, you need the parallel linkage. I know you are wanting to maintain an original style setup so I would suggest individual (4) linkage rods that attach to the center pivot shaft. The rest of the linkage would be the same as the photo I posted with the bell crank and tower. I'll see if I have a photo of the parallel system.

1985 CCX 10-18-2016 06:30 AM

Will get better pic of mine tonight, BTW Inglese sells set up....

ALF 10-18-2016 06:54 AM

Quote:

Originally Posted by 1985 CCX (Post 1406451)
Will get better pic of mine tonight, BTW Inglese sells set up....

Inglese = Jim Inglese
I'm already in contact with him:)

1985 CCX 10-18-2016 05:10 PM

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This is for non-opposing set up, little different than John's picture above....

1985 CCX 10-18-2016 05:25 PM

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Weber from top......

CompClassics 10-18-2016 07:14 PM

1 Attachment(s)
Just for the record the color photo and the black and white photo of the different linkages I posted above are all SAI, the color photo is of CSX2155s engine and the black and white photo is from a SAI parts catalog.
When it comes down to it though, if you can make a linkage that works well for you and doesn't need constant adjusting it doesn't matter what it looks like unless you are trying to make it appear like the original SAI parts.

Here is a parallel SAI system that was removed from a Cobra in the early 1970s........

Gaz64 10-19-2016 04:57 PM

Quote:

Originally Posted by 1985 CCX (Post 1406517)
This is for non-opposing set up, little different than John's picture above....

I'm glad to see the mention of non-opposing which now makes more sense for both options, opposing or non-opposing.

Versus parallel or opposing earlier in the thread, which makes no sense.

After all, all the setups are parallel.

If you walked into shop, and they asked which way your carbs are, and parallel was mentioned, I'm sure they would be odd looks.

All nice photos though.

Gary

1985 CCX 10-19-2016 05:49 PM

John really is a master at this stuff. Many thanks.

John, in Oceanside next Thursday.
You around.


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