07-08-2021, 02:15 PM
Tony,
I've had similar.
My first ulster I made, when I sold it the new owner drove it like he stole it. Broke the crank.
The damage was to the white metal on number 4, the number 4 piston, and obviously the crank.
Were as I had a customer bring his engine in, and it looked like someone had dropped a handgranade in the engine.
The engine was in around 8 large pieces, but that's not all.
It broke the bell housing on the gearbox, wich had to be rebuilt. And it threw the fan blade into the radiator, so the rad had to be re-cored.
I think what may have been put in Mark's mind, is the extra force from the high lift cam, may force the smiley face cracks that form on the side of the crankcase.
If so, I feel that damage comes from double springs? And most likely the block nuts not being tightend properly.
I've never seen an original 1 1/2 crank brake, but I have seen one that has formed the usual crack in number 4 jernal. So you are unlikely to brake the 1 1/2 crank.
But for me the ulster engine isn't cheap, and almost impossible to replace. So it runs with a Phoenix.
(for those 2ho put there sports engine under the bench, because they are afraid of breaking it?) Who are you saving it for, the mice.
Tony.
I've had similar.
My first ulster I made, when I sold it the new owner drove it like he stole it. Broke the crank.
The damage was to the white metal on number 4, the number 4 piston, and obviously the crank.
Were as I had a customer bring his engine in, and it looked like someone had dropped a handgranade in the engine.
The engine was in around 8 large pieces, but that's not all.
It broke the bell housing on the gearbox, wich had to be rebuilt. And it threw the fan blade into the radiator, so the rad had to be re-cored.
I think what may have been put in Mark's mind, is the extra force from the high lift cam, may force the smiley face cracks that form on the side of the crankcase.
If so, I feel that damage comes from double springs? And most likely the block nuts not being tightend properly.
I've never seen an original 1 1/2 crank brake, but I have seen one that has formed the usual crack in number 4 jernal. So you are unlikely to brake the 1 1/2 crank.
But for me the ulster engine isn't cheap, and almost impossible to replace. So it runs with a Phoenix.
(for those 2ho put there sports engine under the bench, because they are afraid of breaking it?) Who are you saving it for, the mice.
Tony.