17-03-2025, 11:13 AM
I set my timing (with auto-advance distributor) at TDC then fine tune by ear. I would not profess any great expertise at this. But beware of too much advance when labouring at low rpm - engines don't pink any more, which used to be a useful tell-tale that they are in distress.
Your back axle is most likely a 5.25 - which should be adequately lively. Vans were originally a lower ratio, but most had a hard life and have been replaced with available parts over the years. It's fairly easy to check by counting wheel vs propshaft revolutions.
You don't mention what cylinder head you are using; though on an Ulster rep I'd expect at least the standard high compression head.
Do you know what tappet radius/ camshaft it has? A "sporty" cam may fly at high rpm but lack torque for slogging up hills.
I'd encourage you to meet up with other owners and compare cars. Austin Sevens aren't known for sailing up gradients in top gear, it may just be a matter of adjusting expectations & driving style.
Your back axle is most likely a 5.25 - which should be adequately lively. Vans were originally a lower ratio, but most had a hard life and have been replaced with available parts over the years. It's fairly easy to check by counting wheel vs propshaft revolutions.
You don't mention what cylinder head you are using; though on an Ulster rep I'd expect at least the standard high compression head.
Do you know what tappet radius/ camshaft it has? A "sporty" cam may fly at high rpm but lack torque for slogging up hills.
I'd encourage you to meet up with other owners and compare cars. Austin Sevens aren't known for sailing up gradients in top gear, it may just be a matter of adjusting expectations & driving style.