[OG68]

Originally Posted by mgarblik

Most of our old, flat tappet stuff is still ground on ancient manual cam grinding machines, some dating back to the days our ancient engines were new. Not necessarily a bad thing at all as long as the masters, and the machinery are maintained and in good shape and operated by people who know how to grind cams! (Old Guys). .

I saw a few grey haired Old Guys at Crower cutting the cams.

[Steve C.]

Not necessarily related, but might be of interest. Includes a few shots inside Crower.

Regrinding a Camshaft - Behind the Scenes @ Crower Cams

https://www.youtube.com/watch?v=A-tLEzZn_4o


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[Jay S]

Melling cams and other white box grinds that are ground by CMC get ground in very exotic CNC machines that grinds the cam in a few minutes with stunning accuracy. The down side is they do so many cams in a day, QC isn’t the best, especially when it comes to cam core issues. Other than that, just like what Mike said, most every flat tappet cam is ground on the manual Berco type machines, they have more variation. I think Comp may grind some flat tappet cams on CNC grinders.

Those guys at Crower need to drink an extra cup of coffee before the fire up their grinders …. The flat tappets from Crower seem to vary in how they are ground pretty wildly. Part of why I said you need to check cams out and Crower is no different. I have seen the 60919 come out looking like a single pattern cam, I have seen them mess up the LSA and it measured 116. The worst was the cam that had an extra 18* of exhaust seat timing on it. All on what is suppose to be the same cam. I like Crower, but they need to move that cam grinder that does those cams out of that dark corner of the shop!

[67Lemons]

Originally Posted by Jay S

Melling cams and other white box grinds that are ground by CMC get ground in very exotic CNC machines that grinds the cam in a few minutes with stunning accuracy. The down side is they do so many cams in a day, QC isn’t the best, especially when it comes to cam core issues. Other than that, just like what Mike said, most every flat tappet cam is ground on the manual Berco type machines, they have more variation. I think Comp may grind some flat tappet cams on CNC grinders.

Those guys at Crower need to drink an extra cup of coffee before the fire up their grinders …. The flat tappets from Crower seem to vary in how they are ground pretty wildly. Part of why I said you need to check cams out and Crower is no different. I have seen the 60919 come out looking like a single pattern cam, I have seen them mess up the LSA and it measured 116. The worst was the cam that had an extra 18* of exhaust seat timing on it. All on what is suppose to be the same cam. I like Crower, but they need to move that cam grinder that does those cams out of that dark corner of the shop!

Really disappointing to hear that! I’ve only heard good things about their grinds