The concept of a variable duration lifter sounds good at first. Discovering a company like Rhoades makes them is even better. Or is it? I always ask myself some pretty simple questions when evaluating something that seems to claim an awful lot.
How popular are these lifters? Any top name builders using them?
If it were so easy to build torque and vaccum/fuel mileage/driveability at the bottom of the rev range and still preserve high rpm power production, then why have the OEM's invested so much in true VVT? I mean why develop a camshaft that can be retarded or advanced via electronic control when they could have just dropped in a lifter?
I mean no offense I am just offering my mode of thinking. I would also guess that anyone that had issues with "regular" lifters and then noticed much better performance after the installation of Rhoads fast bleed down lifters probably had way too much cam in the first place. J.Rob
