stebec

I want to check my ignition timing this week with a timing gun on my 1975 Spitfire 1500, what is the best setting for the timing? Steve

I have just rebuilt my HS4 Carburetors, what is the best way to tune them? I have the jets, level with the bridge, I've watched you tube videos but all seem to tune them different ways. Steve

Thanks for all your replies

I had a fuel leak from a split in the jet tube sleeve, so bought a complete rebuild kit

The car came with K&N air filters on it, I have just changed my standard exhaust to a bell twin pipe exhaust which has a branch manifold.

I have just checked the new needle code number and the are ABT the old needle code is AAR will this cause a problem? also is this collar for the needle supposed to have this lip on the top? Sorry about all the questions but I'm new to the classic car world

My needles have springs on them, so shouldn’t they centre themselves?

Help needed, I have just rebuilt my twin HS4 carbs, on one of them if I manually lift the piston, it wont drop down back onto the bridge, the other piston will, any ideas what i have done wrong? Steve

Thanks for your replies

My engine bay needs a good cleaning up before i paint it, and the engine block, the engine bay seems to have like an under seal all over it, is there anything i can use to remove it? Steve

Merry Christmas everyone, I presume that the carburetors on my 1975 spitfire 1500 are the HS4 type, is there any markings on the carburetors that will tell me?, the only number I can find is this one. Thanks

Fitting a new exhaust this week with a branch manifold, should i use the gasket that comes with it or I’m better using gasket sealer? Also should i use Exhaust paste for the joints on the Exhaust

These are the results of the compression test Number 1 was 150 Number 2 was 160 Number 3 was143 Number 4 was 155 are these Ok or could there be a problem Steve

Hi Pete, I read the instructions wrong, I’m knew to the classic car scene so it’s a big learning curve, how do I keep the throttles open? steve

Thanks Johny