Morell Hydraulic Roller Lifters

just to clear this up
I think Bewy was saying if its flat tappet you need to reface lifters
if its roller thats a moot point.
You can't reface a roller...
all you can do is make sure it sees the same lobe and the same pushrod

and i can only confirm what i was told when i looked into roller cams

I was told I needed special drive for oil pump/dizzy due to the hardness of the cam material.

i was also told that regardless of the length of the lifter and its oil band position i should probably sleeve the bores, to help control oil and to make sure that the oil band on the lifter could never be exposed at bore top or bottom

BUT my motor is an odd Australian 6 not an V8

so that may be irrelevant here

how good a fit is a retro fit lifter in a bore for a flat tappet lifter, that has a massive window into the oil gallery ...dunno..never got that far. i.e do you need the oil control tube rammed down the gallery from one end, referenced in a number of small block performance build books from DC in the 1990s


Dave