- First Name
- Matt
- Joined
- Dec 19, 2021
- Threads
- 47
- Messages
- 2,149
- Reaction score
- 2,520
- Location
- Abilene Tx
- Vehicle(s)
- 94 Silverado , 07 mustang, 69 barracuda
- Engine
- 2.0L EcoBoost
- Banned
- #347
Chinesium flat tappets. Buy only hylift Johnson flat tappets, made in USA, or go roller. Comp cams sells cam saver lifters but I'm not sure what the deal is with them. I have 2 sets of USA made old flat tappet lifters ready for my 2 latest mopar builds.I hear, understand, but still have a question. How is it that the cams made today need such a sensitive 'break in' compared to cams coming off the assembly line back in 1939, 1964, and 1987, to pick arbitrarily?
I read of new cams, new lifters, running @2k for 20 minutes, etc, and then blammo, a tappet eats a lobe... Waaaahhhh!. Could it be the newer cams are not finished as well as in the past? Could the tappet/lifter faces be non-hardened or whatever makes them work in shear not be done properly? Never heard of so many cam failures as in the recent past.
As far as driving from Granger in a brand new vehicle, IMO, a long drive would give the best break-in. IF, you vary the speed. If you put it in cruise, and forget it, I am not sure it is as good as manually changing speed on an irregular basis. I liked to change speed on a quarter hour or so interval. Accelerate gently to 10mph faster, take my foot off the gas pedal, and let the engine coast and pull a good vacuum. Hopefully, no guarantee, there would be a bit of oil pulled up on the cylinder walls to lube and cool, and to give them a short respite from hard work. I could be out to lunch, but that's what I would recommend to any new purchaser.
tom
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