06-04-2020, 12:33 PM
I am currently stripping, cleaning and putting back together a 1932 engine that was rebuilt at least 15 years ago, possibly considerably more, and then hardly used before the car went into storage.
The car, a 4 seater tourer (AG or AH, I don't yet know which), is tuned to the extent that it is bored 60 thou and has a Ruby head but it will be a road car possibly used for the occasional trial.
The engine is fitted with BHB split-skirt pistons which I note have no lubrication holes in the gudgeon pin bosses, different from all the other miscellaneous used Austin Seven pistons that I have amongst my collection of junk.
My main question is whether the gudgeon pins in this car will receive sufficient lubrication or whether now is the moment to drill an oil hole in each of the piston bosses?
A secondary question is can anyone put a rough age on these BHB pistons? My little research on the internet so far suggests that BHB pistons have not been around for some time.
Thirdly, and not directly relevant, is how does one distinguish an AG Tourer from an AH? The chassis register shows it as an AG but this car was first registered on 1st September 1932, still with a 3 speed gearbox and front fuel tank. By my reckoning, it should be an AH. If it is down to whether or not the body is pressed steel, what are the telltale signs to look for that define pressed steel?
Any advice or suggestions would be greatly appreciated.
John.
The car, a 4 seater tourer (AG or AH, I don't yet know which), is tuned to the extent that it is bored 60 thou and has a Ruby head but it will be a road car possibly used for the occasional trial.
The engine is fitted with BHB split-skirt pistons which I note have no lubrication holes in the gudgeon pin bosses, different from all the other miscellaneous used Austin Seven pistons that I have amongst my collection of junk.
My main question is whether the gudgeon pins in this car will receive sufficient lubrication or whether now is the moment to drill an oil hole in each of the piston bosses?
A secondary question is can anyone put a rough age on these BHB pistons? My little research on the internet so far suggests that BHB pistons have not been around for some time.
Thirdly, and not directly relevant, is how does one distinguish an AG Tourer from an AH? The chassis register shows it as an AG but this car was first registered on 1st September 1932, still with a 3 speed gearbox and front fuel tank. By my reckoning, it should be an AH. If it is down to whether or not the body is pressed steel, what are the telltale signs to look for that define pressed steel?
Any advice or suggestions would be greatly appreciated.
John.