In the pinto building book by Des Hammill hasn't got exactly your setup in the starting point jetting but this is what it does have

Jetting for standard 2000 (40mm webers)

34mm chokes
135 mains
f11 Emulsion
190 air correctors
35 acc pump
40 f9 idle jets
4.5 aux venturis

timing 12 deg at idle 38 deg total, but it doesn't state 'all in' RPM

Jetting for modified 2000 (45mm webers)

38mm chokes
145mm mains
180 air correctors
f16 Emulsion tubes
40 accel pumps
45 f2 idle jets
4.5 aux venturi.

So somewhere in the middle would be the sensible starting point I think. As for the vacumm advance, there are two options for retaining it, and retaining it will be better if getting used on the street because basically the motor makes more power at higher manifold vacuum levels, meaning less throttle at cruise, less fuel being used. The standard vacuum port for the vacuum advance is drilled into the carburetor, sitting just behind the butterfly on the venturi side, so at idle there is no vacuum applied to it but at light throttle the butterfly edge rises above it exposing it to the manifold vacuum. The other method which is possible but i don't favour as much is to hook it to the manifold directly. this means the advance mech will see vacuum at idle and the idle speed will increase a fair amount, to correct it obviously you turn the idle speed down on the carbies, but this can cause the butterfly to be to far away from the transistion port which is after or part of the idle mixture port, this can result in a quick stutter when you get on the throttle from the closed throttle position (every braking corner for example). This isn't always the case, and to be honest I can't remember the porting arrangements in the 40's so i'm not sure how they will respond, Hope some of this dribble helps you!!!

Hi Guys,

Just wondering if anyone has hit this problem before with twin carbs before, my aux venturies spit the dummy and fall out of the carb into my filter boxes and they are fitting in ok but are loose inside the carb, one venturie the metal spring on the side has fallen out completly and now will slide in but not stay in. I checked all the others and they all click in but are easily able to slide out. Ive got a funny feeling the venturies in there are too small or im missing somthing.

Maybe those trumpets that go on the carbs help hold them in more, it seems to look that way anyway.

I took a photo of where the metal spring fell out, can you fix these or just buy new one??



Also, when changing aux venturi sizes do you have to change the main venturi aswell? or is it just the aux size that changes?

good to see you finally mount that catch can

Very nice early shots, i like the new steering wheel as well.

You will feel the difference in the front end, with a strut brace fitted.

To find 1st, just don't press down on the lever and look for reverse.
They are good apart from the noise they make down the M1.

Cheers, i found out how to get into 1st a bit easier now, I go down into second and straight up. It wont let me go into 1st if i just try go left and up[?] I'll get use to that anyways.

Just have to get some smaller springs on my new linkage because they dont pull the Accelerator pedal fully back, so ive been puttin me toe under the pedal to lift it up so it doesnt look like im a nob revvin at idle [88]

quote:

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Originally posted by Steviestar

Just listening to the second Vid Rhys and to me it sort of sounds like the carbs could be out of balance. Check to make sure they are in balance, could be your fault

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I had a problem with vaccun on one carb, the soft mounts were poo poo and there was a leak. so i had them fiddle and tuned lightly around that leak. Now that ive fixed them leak and new soft mounts the carbs werent balanced from all the fiddling i had to do to compensate for the leak.

anyhow, got it all fixed up today and tuned a bit and it's running as good as its been in the last 2 years. while driving it home i decided to give her some and it was awesome, screaming at 6500RPM in 3rd. Since driving a 1L Chirade for the last 6 months and getting into my escort it felt like i was in a rocket ship [:x)][:x)]

Next step Rego & then off to get a long awaited dyno tune.

Rhys.