Dellorto dhla 40 question

[Sinfull]

Hey

I was hoping to get some advice on my twin dhla 40 dellorto carbs fitted to my bored out a12 engine.


My carbs are dhla40N series.

Basically the main thing I wish to know is in regards to the balancing air bleed screws. I found each of mine under a silver cap which was easily drill and pride out.
However none would turn. I investigated further and found a hole on the side of each with what I belive was an anti tamper solder melted into it. After getting what I could out I still had no luck turning them.
Have you struck this before and found a way around it.

I have made my own manometer and found the two center carb ports vacuums quite a lot higher the the outer two. I can almost stabilise them using the center balance linkage adjuster but still not enough for my liking. And my idle is still a bit shaky.

Well thanks for your help.

Mat

I'll attach a file with a photo of my ports for what it's worth.

[Naki-Fisher]

If you hunt around in the net you find a manual for them mate.
Will tell you everything you need to know

[Sinfull]

If you hunt around in the net you find a manual for them mate.
Will tell you everything you need to know

Thanks turns out I've sold this car now. Doesn't mean I'll have some more later on.