How long does it take to break in a flat tappet cam?
The most critical time in the life of a flat tappet camshaft is the first 20 minutes of break in, during which time the bottoms of the tappets mate-in with the cam lobes. This is true for both hydraulic and mechanical flat tappet camshafts.
How long do you run COMP cams break in oil?
COMP Cams 1590 engine break-in oil is to be used 500-1000 miles max. following the camshafts specific break-in instructions.
Do you need to break in a new camshaft?
If sufficient high-pressure lubricants (like zinc and phosphorous) are present during this break-in procedure, the camshaft has an excellent chance of survival….There are a couple of things that have changed. Read about them here.
| BRAND | WEIGHT |
|---|---|
| Chevron Delo 400 | 15W-40 |
| Mobil Delvac 1300 | 15W-40 |
| Shell Rotella T | 15W-40 |
How much zinc does it take to break a cam?
Current API SM and SN oil limit ZDDP (zinc and phosphorous) levels to 800 ppm. While ZDDP break-in level recommendations for flat-tappet camshafts vary widely, it appears that concentrations of around 1,500 ppm or above are appropriate, and as you can see from our testing, most of the break-in oils achieve that level.
How do you break-in a new cam?
Perhaps the most important step in the break-in process is to bring the engine immediately up to a minimum of 2,500 rpm or more. This is vital because most V8 pushrod engine camshafts are not pressure-lubed. Instead, the cam relies on splash oiling brought up from crankshaft movement.
How do you break-in a new hydraulic camshaft?
Procedure
- Install the Camshaft.
- Set the Valve Lash or Preload as recommended by the manufacturer.
- Prime the Oiling System.
- Set the Initial Ignition Timing.
- For carbureted engines, make sure fuel bowls are full and any air is bled from the fuel lines.
- Start the engine and immediately raise rpm to 3,000.
What oil should I use to break-in a camshaft?
The best oil to use during cam break-in is one with high ZDDP levels but very low or no detergent. This way, the ZDDP remains on the cam lobe and bottom of the lifter where it belongs, minimizing excessive wear and allowing the lobe and lifter interface to create the necessary wear pattern.
What oil should I use to break in a camshaft?