Having done 100 plus miles on my re-build car all is relatively well except for the engine noise. I am used to my (now sold) 31 A12/6 which would run quietly with just the slightest hint of tappet noise.
Tappets were set at 6thou inlet and 7thou exhaust when cold.
However, my motor is very noisy and it seems to come from the tappet domain. I would normally think that tappet noise comes from wide tappet spacings, but my thinking leads to a reduction in spacing as the motor and gaskets etc. settle in.
So what I have not yet done: Reset the tappets. Sorry but other priorities have kept me away from the car.
What I have done: Following advice from a well respected A7 racing enthusiast, I flattened the cam follower profiles. Your next question will be - by how much. I'm sorry to say I don't know and I will have to find my jig I made to sit over my belt sander to answer, but you can safely assume that the profile is flatter.
So my question is this: Should I expect loud tappets because of the flatter cam followers, or is it a common settling in result and I should just get on and fix the tappet settings.
I promise to post the results of the tappet setting exercise when it comes soon.
Graham
Tappets were set at 6thou inlet and 7thou exhaust when cold.
However, my motor is very noisy and it seems to come from the tappet domain. I would normally think that tappet noise comes from wide tappet spacings, but my thinking leads to a reduction in spacing as the motor and gaskets etc. settle in.
So what I have not yet done: Reset the tappets. Sorry but other priorities have kept me away from the car.
What I have done: Following advice from a well respected A7 racing enthusiast, I flattened the cam follower profiles. Your next question will be - by how much. I'm sorry to say I don't know and I will have to find my jig I made to sit over my belt sander to answer, but you can safely assume that the profile is flatter.
So my question is this: Should I expect loud tappets because of the flatter cam followers, or is it a common settling in result and I should just get on and fix the tappet settings.
I promise to post the results of the tappet setting exercise when it comes soon.
Graham
Slowly rebuilding a '34 RP