Quote:
Originally Posted by njsteve
Take a look at the piston and tell me what is wrong with this picture....
Yeah, nice factory alignment of the ring gaps. All eight pistons had the gaps on every compression ring and every oil ring lined up with each other. It defies logic. Every kid learns in high school shop class that you have to stagger the ring gaps in different locations to avoid loss of compression and high oil consumption.
All I can think is this was some type of job action or purposeful sabotage by the guy at the engine assembly plant back in 1975.
No wonder the car never had any ooomph when you hit the gas.
(Original machine marks on the piston skirts look nice, though)
We removed the compression rings and checked the ring gaps:
Cyl 1: .032, .030
Cyl 2: .032, .032
Cyl 3: .030, .032
Cyl 4: .032, .035
Cyl 5: .035, .032
Cyl 6: .030. .035
Cyl 7: .028, .028
Cyl 8: .025, .030
I believe the spec is supposed to be .019 plus/minus .010. |
I'm sure you know this but rings rotate while the engine is running. Believe it or not, they don't all rotate in a beautiful symphony of synchronicity. They end up where they end up. I would say it was a coincidence that they were all lined up.