14-08-2022, 03:33 PM
I'm trying to get my special running sweetly, and have an issue with acceleration.
I have an 1 1/8 carb from a morris 8, which I've replaced cork seals and gaskets on, and fitted AN needle. Bunch of bananas manifold, Cambridge finned head. ticking over nicely.
It goes ok, but the acceleration isn't fantastic, it pulls, but then as I open the throttle more at the top end it stutters and there's no progressive acceleration. It also seems that if I drop off revs, and slowly open the throttle, it goes better.
It doesn't like hills much- the hill out of my house is a steep one on to the Mendips, but it won't go up in top, which I thought it should, even if its at a steady rate rather than ascending it very fast. Anyway, third is necessary.
When I got the carb, it had a damper and no spring, but with the damper in place I could hardly lift the piston it was so tight, so I removed it, and put in a blue spring.
Probably not the ideal thing to do, but it seemed like a good idea.
The mixture screw is 9 flats out, the timing seems ok.
It's not awful, but not quite right.
Help needed
Thanks
I have an 1 1/8 carb from a morris 8, which I've replaced cork seals and gaskets on, and fitted AN needle. Bunch of bananas manifold, Cambridge finned head. ticking over nicely.
It goes ok, but the acceleration isn't fantastic, it pulls, but then as I open the throttle more at the top end it stutters and there's no progressive acceleration. It also seems that if I drop off revs, and slowly open the throttle, it goes better.
It doesn't like hills much- the hill out of my house is a steep one on to the Mendips, but it won't go up in top, which I thought it should, even if its at a steady rate rather than ascending it very fast. Anyway, third is necessary.
When I got the carb, it had a damper and no spring, but with the damper in place I could hardly lift the piston it was so tight, so I removed it, and put in a blue spring.
Probably not the ideal thing to do, but it seemed like a good idea.
The mixture screw is 9 flats out, the timing seems ok.
It's not awful, but not quite right.
Help needed
Thanks