02-09-2023, 06:47 PM
Both my 9E heads are not wedged.
It is my understanding That the EB65 EB75 and Nippy all used the Ulster 9E head.
I have found the 9E head to make the engine harsh probably due to the combustion happening on one half of the piston tipping the piston which tips into balance as soon as it moves off TDC ( Piston Slap )
There are cast iron, Alloy and Bronze Replica 9E heads in existence.
I paid £5 for one of my 9E heads in 1980 the owner wanted to upgrade to a later head with 14mm plugs.
Neither of us knew what a 9E head was from.
I found out at Longbridge in 1982 when I found one on an Autojumble stall for £30.
My father bought the EB65 which I now have which did not have the correct cylinder head ! So I gave father the 9E head.
It is my understanding That the EB65 EB75 and Nippy all used the Ulster 9E head.
I have found the 9E head to make the engine harsh probably due to the combustion happening on one half of the piston tipping the piston which tips into balance as soon as it moves off TDC ( Piston Slap )
There are cast iron, Alloy and Bronze Replica 9E heads in existence.
I paid £5 for one of my 9E heads in 1980 the owner wanted to upgrade to a later head with 14mm plugs.
Neither of us knew what a 9E head was from.
I found out at Longbridge in 1982 when I found one on an Autojumble stall for £30.
My father bought the EB65 which I now have which did not have the correct cylinder head ! So I gave father the 9E head.