Is it worth replacing camshaft?
Is it worth replacing camshaft?
It makes sense to replace a camshaft when the one you have is worn, but, practically, if your camshaft is worn to the extent you need another one for the engine to run, chances are the rest of the engine is worn out too, and you’d be foolish to pay someone to change it, or go through all the trouble yourself without …
What causes a worn cam lobe?
Cam lobes can also wear quickly when using high Valve Spring Pressure. These high spring pressures will cause the cam to wear faster than normal. These engines, however, are built for performance, rather than longevity.
How can you tell if you have bad lobe on your camshaft?
First, because there’s no reason not to, and it’s probably easier to access the top of the cam lobes than the valves. Secondly, because engines with VTEC-comparable systems won’t show a flat secondary lobe at the valve when you’re turning the engine over by hand.
When does it make sense to replace a camshaft?
A warped cylinder head could theoretically also warp the cam shaft but i would not just replace it, i would check it first. Place the cam in a set of V blocks. Put a dial indicator on the bearing surface and spin the camshaft. Watch how much the dial indicator deflects. The appropriate engine manual will have the warpage specs.
When does a miss on a camshaft go away?
So a miss from a single, slightly flattened cam lobe will often start to go away as engine rpm rises and the lifter pumps up, but will probably reappear at very high rpm as the cylinder begins to once again starve for airflow.
What happens when a cam lobe flattens out?
A flattened cam lobe will often manifest first at low rpm, especially for engines with hydraulic lifters. At idle and low rpm, the valve is barely open even when the cam is brand new; when the lobe flattens out, the valve may not open at all until the lifter pumps up at higher rpm.
What happens when one lobe of the camshaft wears out?
All cams wear eventually, and most never notice it aside from the fact that the engine doesn’t feel quite as perky as it used to. But when a single lobe wears out before the rest because of bad oil, excessive spring pressure or bad valvetrain parts, you could easily end up with a bucking, popping, backfiring mess of an engine.
A warped cylinder head could theoretically also warp the cam shaft but i would not just replace it, i would check it first. Place the cam in a set of V blocks. Put a dial indicator on the bearing surface and spin the camshaft. Watch how much the dial indicator deflects. The appropriate engine manual will have the warpage specs.
What happens when the camshaft of an engine goes bad?
There can be many reasons why your camshaft has gone bad, including worn lobes, worn lifters, bad bearings, or even a broken camshaft. A broken camshaft can have a major impact throughout the top end of your engine, doing serious damage to parts like the crankshaft, cylinder block and head, valves, pistons, and connecting rods.
So a miss from a single, slightly flattened cam lobe will often start to go away as engine rpm rises and the lifter pumps up, but will probably reappear at very high rpm as the cylinder begins to once again starve for airflow.
