Bob's 2001 Mack CH613 with the E7 427 with Jacobs brand engine brake,the engine has about 950,000 miles. I have been on him to either let me or have someone run the overhead on it for 3 years. or over 350,000 miles So Finally yesterday I ran the overhead. actually I was not satisfied with what I found that I bared it through and ran it 3 full times Once with jack eliminators by removing the jakes and torquing down the rocker assemblies the first time I only found a total of 3 valves that needed adjustment the intake and exhaust on #6 were both .002" off and the exhaust on #5 was .003" # 6 intake was at .014" I adjusted it to .016" #6 exhaust was .026" adjusted to .024" #5 was .027" adjusted to .024" after returning the jakes I checked them only 1 was off @ .023 adjusted to .021"
Almost every other engine I've ever ran the overhead on I've had to adjust most of the valves.
I feel like I wasted my time.
And before anyone asks yes the engine was cold not having been started since the day before..
Don't try and tell me what I can't do, try to convince me of what you can do