Engine Break-in - How to measure rpms with Helmet Dist?

[Brian]

I agree with Alan, You need to bed the rings in...in order to do this you need to drive the vehicle in order to put a load on the rings. Simply running the engine at fixed revs is liable to glaze up the cylinder walls.Take the vehicle for a drive, accelerating up to, say your 2000 RPM and decelerating, this creates a high vacuum which draws oil up the cylinder walls to aid in the bedding in of the rings. Driving in this manner for the first 10 miles will enable the engine to bed in very nicely, including your camshaft. Enjoy!!