Product Description
These limiters are required when using longer duration camshafts that have a more narrow LSA. Not all cams of this type need these, but the vast majority will.
Simple in design and requiring no special tools to install, the limiting lockouts allow for the phaser to retard the camshaft still but limit its travel to only 20 degrees maximum. In most cases max power can be found in the 8-14 degree range of retard, so by still allowing up to 20 degrees of camshaft retard, the ability to get maximum power from cam phasing is available. The limiter mechanically locks after 20 degrees and prevents any further movement. This allows for use of larger camshafts with more lift and duration and prevents piston to valve issues. The other benefit that goes with the limiter is that it prevents the noise and durability issue from becoming a factor. By reducing the volume of oil and limiting the total travel rotation of the phaser the issues with noise and failure of the phaser are eliminated.
