Table of Contents
How do you adjust a valve on a poly lock?
Polylock can be adjusted by following the steps below:
- Set the valve lash or lifter preload by turning the outer hex nut.
- Loosen the outer hex nut approximately 1/16 turn.
- Tighten the set screw.
- Tighten both the screw and nut together until they become much harder to turn (25-30 ft. -lbs).
What is the advantage of roller rocker arms?
A roller rocker has a small roller that rolls over the end of the valve stem. This virtually eliminates side load on the stem and greatly reduces wear. Another area of high friction and wear is between the rocker arm and rocker shaft.
Can I drive with a bad rocker arm actuator?
With broken or loose rocker arms, the exhaust valves and intake valves can’t function correctly and the cylinder associated with the faulty rocker arm will be disabled. This will ultimately limit the performance of your engine and your ability to drive the car smoothly and safely.
How do you tighten roller rocker arms?
Do one cylinder at a time and make sure your lock is backed out. Turn your motor over until your exhaust rocker just starts to press down on the valve spring, that is when you will adjust your intake valve for that cylinder. Spin your pushrod while slowly tightening the nut on the rocker. Do not over tighten it.
How do you adjust a poly lock rocker arm?
Polylock Adjustment Procedure
- Set the Valve Lash or Lifter Preload by turning the outer hex nut (polylock body).
- Loosen the outer hex nut approx. 1/16 of a turn.
- Tighten the set screw.
- Tighten BOTH the screw and nut together until they jam and become much harder to turn (25-30 ft. -lbs).
Do roller rocker arms add horsepower?
Roller rockers make power two ways. First, a rollerized rocker fulcrum reduces energy losses from mechanical friction in the drivetrain, freeing up horsepower. At the same 6,000-rpm peak, we made 401.1 hp and 412.9 lb-ft of torque, a gain of 11.2 hp and 5.9 lb-ft of torque.
Do roller tip rocker arms add horsepower?
Roller tip rocker will give you a 15 to 30 horsepower increase over stock rockers and will give you a more effective valve lift….:yes: Click to expand…
What happens if you over tighten rocker arms?
adjusting the rockers too tight can cause all of the things you mentioned. Loss of power, miss, bent pushrods, valve and piston damage If you adjusted them so you physically could not “spin” them then youre way too tight.
How do Poly locks work?
A polylock features a threaded body and a set screw. The body screws over the stud and holds the rocker arm in place. Then, the set screw is tightened down against the stud. This locks the body in place.