Do you need to break-in a roller motor?

Do you need to break-in a roller motor?

Roller cams do not need to be broken-in, nor do they need any zinc in the oil, but ALL flat tappet cams need both. Do NOT break-in your cam or engine with non-detergent oil!

How do you break-in a roller engine?


  1. Install the Camshaft.
  2. Set the Valve Lash or Preload as recommended by the manufacturer.
  3. Prime the Oiling System.
  4. Set the Initial Ignition Timing.
  5. For carbureted engines, make sure fuel bowls are full and any air is bled from the fuel lines.
  6. Start the engine and immediately raise rpm to 3,000.

Do I need to soak roller lifters in oil?

You want to soak the rollers before installation, not the whole lifter. If you fill the lifter body with oil it just makes it more difficult to initially adjust preload, you have to bleed the oil back out. After the rockers are adjusted prelube the engine to fill the lifters.

Do new lifters need to be broken?

Super Moderator. I believe 30 minutes is generally recommended on a new cam and lifters. Make sure to use cam break in lube. I would think new lifters on an old cam would be similar.

Do I really need break in oil?

New cars and trucks don’t need break-in oil. The manufacturer will typically require you to drive under light-to-moderate load for a few hundred miles, then change oil. After that, you’re good to go. Racers, competitors or gearheads using a rebuilt or new crate engine, however, should use break-in oil.

What oil is best for engine break in?

Use a 5w-30 or 10w-30 motor oil with an engine break-in additive (ZDDP or zinc camshaft additive), especially with flat tappet camshafts.

Can you use a flat tappet cam in a roller block?

Flat-tappet cam lobes are ground at a very slight angle to prevent the cam from moving. Roller cams cannot be machined this way, so a roller-cam button is employed to limit cam movement. The spec for this is 0.003 to 0.005 inch.

How do you get oil out of lifters?

Cleaning Individual Valve Lifters

  1. Run the engine with the car hood raised.
  2. Remove the valve cover and the rocker arm, and cam shaft to access the faulty lifter.
  3. Wipe off as much oil from the lifter and remove the spring clamp to take it apart.
  4. Clear out as much oil as possible from each component with a lint-free towel.

How do I know if my hydraulic roller lifter is bad?

The most obvious symptom of a faulty hydraulic lifter is the noise it creates in your car’s engine. You can usually distinguish the faulty lifter by the distinct sound. Instead of a knock or ping, a faulty hydraulic lifter will usually make a sound more reminiscent of a tapping sound.

Can you replace lifters without replacing cam?

The camshaft does not necessarily need to be replaced when replacing lifters, and often times is not. In the case of a 4 cylinder, especially, I would replace lifters without doing the camshaft since you can replace the lifters without removing the head.

How long does it take for lifters to break in?

I believe 30 minutes is generally recommended on a new cam and lifters. Make sure to use cam break in lube.

What’s the best way to break in a roller cam?

Then, soak your roller lifters in break-in oil. Use a finer micron filter during break-in. Prime the pump before firing the engine. This ensures a critical supply of oil to the cam and lifters at initial start-up. Do not idle the engine. Bring the engine up to 2,500 rpm and vary the speed by a few hundred rpm for 20-30 minutes.

Why are break in oils bad for roller bearings?

Some break-in oils are designed to accelerate the break-in process, and as a result, these oils generate higher levels of wear metal—bad news for your roller bearings. Other oils are friction modified. The added slipperiness of these oils can prevent the rings from seating properly Striking the right balance is critical.

Is the break in procedure the same on a roller lifter?

on a hydraulic flat tappet and hydraulic roller lifter are the same, the break-in procedure for each lifter is not. Please review this break-in procedure for flat tappet camshafts.

What do they do during an engine break in?

What is actually being done during engine break-in is fairly simple – it’s the controlled bedding, or wearing-in, of the new piston rings on the hone of the cylinder walls. “We are trying to bed those rings so that they achieve a correct seal against the cylinder walls, and we have a relatively narrow window in which to do this,” relates Simon.