View Full Version : Webber Twin 40s
Well, they're on there, and i can't seem to figure out how the accelerator cable works....
Pics:
http://img5.photobucket.com/albums/v14/lashednova/DSC01108.jpg
Carbs on Car
http://img5.photobucket.com/albums/v14/lashednova/DSC01109.jpg
This is the cable thing (don't know what its called. lol)
And below is a pic of it again. the cable needs to be quite thin and slighly longer than the original nova one by the looks of things. The end of it needs cutting off and i have a bar which sits inbetween them. When you pull the cable the whole thing moves and the big bar opens the throttle.
I dont know how it works as i say, any ideas?
What cable, definitely does not need a twin one or does it?
http://img5.photobucket.com/albums/v14/lashednova/DSC01112.jpg
Cheers for any help
Paul
http://i19.ebayimg.com/01/i/02/18/22/cc_1.JPG is this what i need?
5door_racer
16-07-04, 10:23 PM
You will need a new throttle cable as the existing nova one will not fit the weber linkage(or "cable thing")
I bought my linkage as a kit with cable and the lot but you should be able to buy a cable on its own.
Who fitted those carbs? they won't work, you've got no return fuel pipe. The excess fuel has got nowhere to go, you'll blow yourself up!!!!
no return fuel pipe?
They were removed from a nova and fitted to mine as they were....
you running an injection fuel pump?
well acctually with any pump, you want a 3 psi regulator on the feed, and dont bother with a return
5door_racer
16-07-04, 10:32 PM
Every car i've every seen with a carb, twin weber or not has had a return fuel pipe as when you come of the throttle in high revs the fuel pump is still pumping fuel even though you're not using it, has to go somewhere
i dont know what pump im running, its a standard 1.4 SR pump i do beleive....
Im completely lost, just want them to work. lol
what else do i need to do, form what everyone can see from the pics?
5 door racer, they will just overfuel wont they?
5door_racer
16-07-04, 10:35 PM
they can't just overfuel, the petrol has to go somewhere
my fuel return line has just got a screw in the end of it
used to run on the 32/34 webber fine....
But when i turned it off, it just kept spluttering, that because no fuel return line?
my fuel return line has just got a screw in the end of it
used to run on the 32/34 webber fine....
But when i turned it off, it just kept spluttering, that because no fuel return line?
My last nova had no fuel return and it was ok. it just used to smell a bit of petrol on overun. I could never work out what going on. The fuel had to go somewhere?!
My new has a fuel return via that plastic vapour seperator thingy, and no smells.
As for the throttle cable, that's confused me as well. Can't see what your supposed to do with that aly block. I tried threading the cables thru it in different ways, offering it up to the accelerator pedal, and even putting it in my girlfriend's ear but nothing worked. I have a plan tho. I'll put some pics up for you next week if it works.
they can't just overfuel, the petrol has to go somewhere
that's what needle valves are for.
here's a pic of mine if it helps, although my throttle linkage is on the other carb
http://homepage.ntlworld.com/bencurry/PICT0079.JPG
i've just had a closer look at your pic's. it's a twin cable linkage, you need a twin cable with a ball on both ends, similar to the pierburg set-up. the ball goes in the slot on the curved arm. one on each arm
No you don't need a fuel return with a mechanicqal pump. Will be over pressure slightly, so fit a small cheap regulator b4 the carbs and you will be fine.
Looking down on the engine, there should be two holes on the left of the bracket. The cables pass through these and accross to the radius arm, where they loop under and hook in at the slot at the end. You will need to thread them in backwards.
MC
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