siteunseen Posted April 15, 2015 Share #13 Posted April 15, 2015 I'd swear you could strike a match off one of the lobes on the Schneider cam I just bought. The Delta resurfaced rockers were a little smoother though. 1 Link to comment https://www.classiczcars.com/topic/51307-rocker-revival/?page=2#findComment-467792 Share on other sites More sharing options...
Zed Head Posted April 15, 2015 Share #14 Posted April 15, 2015 I've seen the rough finish on new cams. I wonder what it is though, a coating, or the actual finish from grinding? Anyway, here's some good data on materials and other rocker arm specs. - http://www.rhdjapan.com/kameari-l-type-rocker-arms-set-l6.html Link to comment https://www.classiczcars.com/topic/51307-rocker-revival/?page=2#findComment-467796 Share on other sites More sharing options...
siteunseen Posted April 15, 2015 Share #15 Posted April 15, 2015 It's the cut I'm pretty sure. There's no kind of coating on mine, yet! It came with the paste and a bottle of ZDDP. It did come in an oily bag though. Link to comment https://www.classiczcars.com/topic/51307-rocker-revival/?page=2#findComment-467797 Share on other sites More sharing options...
Zed Head Posted April 16, 2015 Share #16 Posted April 16, 2015 Are there brand names on the paste and the ZDDP oil supplement? Curious as to what the pros send out with their cams. Did Schneider send recommendations on oils also? Link to comment https://www.classiczcars.com/topic/51307-rocker-revival/?page=2#findComment-467803 Share on other sites More sharing options...
siteunseen Posted April 16, 2015 Share #17 Posted April 16, 2015 Are there brand names on the paste and the ZDDP oil supplement? Curious as to what the pros send out with their cams. Did Schneider send recommendations on oils also?Schneider's name and formula numbers, #2 break-in additive, #3 oil additive after 500 mile oil change. http://schneidercams.com/engineadditives.aspx Link to comment https://www.classiczcars.com/topic/51307-rocker-revival/?page=2#findComment-467816 Share on other sites More sharing options...
madkaw Posted April 19, 2015 Share #18 Posted April 19, 2015 Just got my rockers back from Rocker Arms USA in CA. The guy I talked said they have been doing these for 30+ years, but just moved their business. I already have a set from Delta, but wanted to compare. Gary, I believe I have the name right, said the rockers wouldn't have a perfectly polished finished. He said the finish inperfections were to help retain oil. Take a look at the pics and judge for yourself. Link to comment https://www.classiczcars.com/topic/51307-rocker-revival/?page=2#findComment-468015 Share on other sites More sharing options...
grannyknot Posted April 19, 2015 Share #19 Posted April 19, 2015 Very pretty, what is the Rocker arms USA price like compared with Delta? Link to comment https://www.classiczcars.com/topic/51307-rocker-revival/?page=2#findComment-468016 Share on other sites More sharing options...
Diseazd Posted April 19, 2015 Share #20 Posted April 19, 2015 What's your conclusion Steve? Don't know about you, but I think the delta rockers look nicer. Link to comment https://www.classiczcars.com/topic/51307-rocker-revival/?page=2#findComment-468017 Share on other sites More sharing options...
240260280z Posted April 19, 2015 Author Share #21 Posted April 19, 2015 Seems reasonable to have those diagonals for oil. Could be a great modification. Thanks. Link to comment https://www.classiczcars.com/topic/51307-rocker-revival/?page=2#findComment-468019 Share on other sites More sharing options...
Zed Head Posted April 19, 2015 Share #22 Posted April 19, 2015 Asperities are the enemy. Most failures occur during break-in or at startup (no oil film). Broken in engines have much smoother surfaces than new parts and are less likely to fail than new parts. I understand the feeling that roughness holds oil and oil is good, therefore roughness is good, but the counter argument is that oil is there to combat roughness, so smoothness is good. Seems like dealing with the devil. Could certainly use more study. If very rough is bad, and very smooth is bad, then there must be an optimum in the middle. Knowing that magic number could save some parts. Link to comment https://www.classiczcars.com/topic/51307-rocker-revival/?page=2#findComment-468023 Share on other sites More sharing options...
Zed Head Posted April 19, 2015 Share #23 Posted April 19, 2015 Here's an old article. People have wondered about this for a while - https://books.google.com/books?id=CRDEneSREucC&pg=PA144&lpg=PA144&dq=smooth+tappet+surface&source=bl&ots=7Hum0yt51O&sig=DgXG_t_DAzbCNCNPCEvDyp7C-x0&hl=en&sa=X&ei=-AIzVd2fAoO3oQTo2IGwCA&ved=0CCQQ6AEwAQ#v=onepage&q=smooth%20tappet%20surface&f=false 1 Link to comment https://www.classiczcars.com/topic/51307-rocker-revival/?page=2#findComment-468025 Share on other sites More sharing options...
madkaw Posted April 19, 2015 Share #24 Posted April 19, 2015 It seems that the lash pad part of the rocker has more texture ( for lack of better words) then the cam side. Those lines you see can't hardly be felt or grabbed with a finger nail. I think a lot more cam failures are do to operator error than these rockers. Not properly setting them up or properly priming the engine before initial fire up. Throw in there the lack of zinc, proper adjustments, etc... Link to comment https://www.classiczcars.com/topic/51307-rocker-revival/?page=2#findComment-468026 Share on other sites More sharing options...
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