Quote:
Originally Posted by olddog
I might add a hydraulic lifter acts as a dampener to reduce the shockwave of metal hitting metal. I think the oil pressure in the hydraulic lifter holds the lifter in contact with the cam, but I'm not certain of that. |
Yes, that is because the lifter is in constant contact with the lobe of the cam, and lash is always at zero. I think the contour of the cam, after the lobe, is different between solid and hydraulic cams. Hydraulic lifters have spring loaded plungers with the added effect of the
oil pressure to keep the lifter in constant contact with the camshaft.