mikleins29
Well-known member
- Joined
- Dec 10, 2011
- Messages
- 131
- Reaction score
- 0
- Location
- omaha
- My Car
- 71 fastback 351cleveland 4 speed
So I have replaced 4 rear mains and still leaking crank was turned .010 bearings look good rope seal changed to other setup roll pin gone I staggered the gaps of the seals the only thing I have not done was replace the oil pan. One machine shop says the line bore must be out of alignment and to rebuild and line bore. Another says it could be the roll pin hole leakingwith pressure behind it and leakingpast oil pan rubber gasket and it could be pcv system. But that's been replaced I don't know what to do I am toying with just trying a differant block and crank all together but having ttrouble finding one for reasonable price.getting tired of this leak and have dumped a lot of money into fixing it. Some one please help is the first machine shop right that clevelands are known for line bore problems from factory or can it be something else all together. I have replaced valve covers oil galley plugs cam plug. Its the original m code engine for the car.what more can I do. Please help me anyone.