What causes cam walk?
Cam Walk (Axial Thrust) Phenomenon The tell-tale signs are a worn thrust face on the block (if movement was backward) or a scored timing chain cover (if movement was forward), or excessive wear of the cam’s distributor drive gear.
How do I stop my camshaft from wearing?
Roller tappet cams only require engine oil to be applied to the lifters and cam. Also, apply the moly paste to the distributor gears on the cam and distributor for all camshafts. For extra protection, an anti-wear additive should be added, such as Crane Super Lube. Do not use synthetic oil during the break-in period.
What does a roller cam button do?
It also pushes the cam backward in the block when the engine is running, so its position fore and aft is usually stabilized. A roller cam doesn’t have the same taper ground into the lobes, so if it isn’t controlled, it can “walk” forward or back in the engine block.
What can a bad camshaft cause?
Poor Drivability. A failing camshaft position sensor begins losing its ability to quickly transfer data. Mismatched fuel delivery and ignition timing, even if off by a few milliseconds, will cause your vehicle to sputter, accelerate poorly, lack power, stall or even shut off.
Why are roller camshafts used in racing cams?
The bearing rides on the camshaft lobe eliminating much of the friction and allows for smoother lifter to lobe contact. Roller camshafts are available in a wide variety of profiles. These profiles have faster ramp rates or lobe acceleration for quicker valve opening and closing.
What kind of distributor gear do I need for roller cams?
If you have an austempered ductile iron hydraulic or solid roller cam, your two options are: 1. Melonized or hardened steel distributor gear 2. Composite distributor gear 1. Bronze distributor gear 2. Composite distributor gear cores. If the steel gear is not hardened, it is not compatible with either of the roller cam types. it will work fine.
What’s the best way to keep roller cam from moving?
To keep the roller cam from moving too much, you need to use a cam button between the cam cover and the cam gear to hold it in place, and a Torrington bearing behind the cam gear to keep the cam gear from damaging the block.
When to know if your camshaft is bad?
If you notice wear or damage on your camshaft, it’s important to locate the causes of the problem before installing your new cam. If you don’t, you run the risk of ruining the new camshaft as well, and costing yourself more money. So what might be causing these issues?