- Joined
- Mar 26, 2018
- Messages
- 8,407
I've been in the automotive repair business since 1976.
The technology has come a long way.
I was surprised to hear the factory maximum specification for cylinder wall taper is .0004"
We have an unusual situation with a small V-6 engine and had to tear it down to identify the causal component. (The engine has less than 10.000 miles on it). In the process the tech. found one cylinder had significant taper >.001. I said, "that's out of spec? what is the spec??" = < .0004"!!
I don't know what a 1971 V-8 engine maximum taper would be but I bet it was a higher tolerance than today.
That's pretty amazing when you think of the pace and quantity of cylinder blocks coming out of these modern plants. I would assume the manufacturing environment is climate controlled in laboratory conditions.
The technology has come a long way.
I was surprised to hear the factory maximum specification for cylinder wall taper is .0004"
We have an unusual situation with a small V-6 engine and had to tear it down to identify the causal component. (The engine has less than 10.000 miles on it). In the process the tech. found one cylinder had significant taper >.001. I said, "that's out of spec? what is the spec??" = < .0004"!!
I don't know what a 1971 V-8 engine maximum taper would be but I bet it was a higher tolerance than today.
That's pretty amazing when you think of the pace and quantity of cylinder blocks coming out of these modern plants. I would assume the manufacturing environment is climate controlled in laboratory conditions.