Quote:
Originally Posted by Ol' Ron
The worst part of the alum cover is the ware pattern on the cam thrust surface, causing a large cam backlash. One way to check this is with the aluminum ball trick. Attach on to the nose of the cam and rotate the engine. .008'010" is normal. I have found as much as .020 . The only way to fix this is a shim behind the cam timing gear. . WHY?? The excessive baclklash has an effect on timing
|
Perhaps a better way to address the problem for most would be to adjust the thickness of the cover to block gasket or eliminate gasket and use liquid gasket.
Then again have appropriate amount of material removed from cover mounting surface.