Carburettor HD8

[gannycat]

Hi,

Bought a carburettor kit and took it to an expert for fitting. When the work was done fitted to car but unable to start. Found a very informative article in this months Take Five so started to follow Ken Nelson's step by step advice.

First problem , no 1/18th hole in the butterfly valve. Oh Dear, now what do I do? Ah, I know replace the old one with the hole.
All I have to do is to take out the new Butterfly and replace. This is going to be simple even for me!
I notice that the two screws holding the Butterfly have been cut through to ensure they do not come loose. Everything fine so far. Here I go with the pliers and try straightening the end of the screw which has been cut through and slightly bent. Snap! both ends broken off, now the unscrew. I cant unscrew the screws and I have a very limited area to work with. Dare not put too much pressure on the screws which do seem rather soft. I imagine they were supplied with the kit.

If this sounds rather basic for an engineer it certainly isn't for me. I know I have to remove the screws but what is the easiest way?

I think I could very easily damage things if I am not careful.

Any advice would be most welcome.

Tony

[djm16]

If the heads break off the screws, you should still be able to remove the butterfly. You should then be able to grip the screw stub with a small pair of mole grips.

[gannycat]

Thank you for your advice I shall continue.

[enigmas]

Why not simply drill an 1/8" hole in the new butterfly whilst it's in situ. Use a small pilot drill first then incrementally increase it's diameter in two or three stages.

[gannycat]

Yes I shall proceed with the drilling option. Thank you.

Tony

[Ken Nelson]

That's exactly what I did to my butterfly. It's easy to drill a 1/8" hole in the lower half, and position is not overly critical.