what oil should i use for new engine rebuild???????????? or oil additive i dont want to ruine the new cam i heard it should have some zink in it
Use the advanced search function and search for motor oil in thread ***les only. It will keep you busy for awhile with plenty of reading and opinions.
Definatley use some sort of oil additive for break in, or it will put a flat tappet cam in jeopardy. Here is a link to an Alliance vendor. http://www.zddplus.com/ Good Luck, -Joe
Brad Penn Break in Oil, Joe Gibbs Break in oil, all of these have the amounts of ZDP you need already in them. The Brad Penn is the former Kendall refinery after they sold the name to Havoline or whoever. Good Stuff.
I went to a roller cam to not have this problem. Of course, that necessitated different pushrods, rockers, springs, retainers... but at least I don't have to worry about ZDDP level in the oil! -Bill
check with the oil company tech lines. they will tell you which oil they have with higher levels of zinc.
I'm still using Castrol. If you look they even have a special breakin oil although I haven't use it since I quit building flat trackers way back when. I also try to use good parts to start with. The biggest problem that most of the fellas find is that it does't matter what oil they use iof they use cheap lifters that flatten a cam. Anyway to answer your question I use Castrol.
I look at what's on sale; Pennzoil, or Castrol, or Mobile, or Valvoline, or whatever i left out.................... The key to breaking in a fresh overhaul is to be liberal with the ***embly lube, I use STP honey oil, pre-oil the motor(pressurize)prior to initial startup, and continuous, uninterrupted operation at high idle for several minutes on that initial startup. That requires that the carburetor and ignition be set up in advance where the motor can be kept running at high idle without interruption during and after that initial startup. On all of my regular motors without heavy valve springs, performance cams, and the like, and I've overhauled more than my share of them, I have never had a cam failure. I use whatever is on the shelf that is on sale. As far as performance motors with heavy valve springs, on racing motors, with performance cams, they all still have occasional cam failures, WITH HIGH ZINC OIL. So what is the reason for that? As far as ***embly lubes go, has anybody ever questioned their quality, and wondered if THAT might be the cause of cam failures in fresh overhauled motors? I have always used honey oil, like STP. A lot of overhaul shops won't use it, simply because it is messy and sticky. Go figure. I'm sticking with it, pun intended............ Further; In the past couple of years I, and some friends of mine have got some bad lifters, new out of the box. If one isn't careful and catch the bad ones, (they click because they are stuck internally). I have changed them out when I first heard them going bad. If I didn't. there is no doubt that they would lead to damage to the cam lobe. So, if I had a cam failure, and I wasn't using high zinc oil, I can see where some nimrod could come to the conclusion that "the oil did it"! Lately, that apparent trend of getting bad lifters seems to have slacked off. I hope so. As far as premature failures go, I am guessing that a lot of them are caused by improper pre lube, and pre oiling before initial startup. It's a regular thing to hear someone that got his motor ready to go then ****ed around for a half day with the carburetor or ignition timing. Gues what? The cylinders got washed down, and the cam pre lube got all dried up before it got a good initial run in................. But of course I'm just an old fart that, when I overhaul a of motor, pre-oiled them properly before startup and, knock wood, havent had one **** the bed yet. So what do I know?
I would think that a synthetic would eliminate the need for additives in flat tappet engines. Whay say the experts?
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