Breaking in new Cam 460 Ford
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Breaking in new Cam 460 Ford

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    Senior Member Quit Yer Bitchin's Avatar
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    Default Breaking in new Cam 460 Ford

    I need some advice breaking in new cam and lifters in fresh rebuilt short block. Paper work that came with the motor says to add a bottle of zinc to the oil and change the oil after the first 2 hours. Add the second bottle of zinc after changing the oil and change oil again after 20hrs. Do I have to do a certain break in procedure for the cam? I remember having to run new engines at 2,000 RPM for 10 min or so to break in the cam.

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    Senior Member jamesblown97's Avatar
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    what kind of cam is it flat tappet, hyd. roller etc....

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    Quote Originally Posted by jamesblown97 View Post
    what kind of cam is it flat tappet, hyd. roller etc....
    Flat tappet

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    Senior Member jamesblown97's Avatar
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    when I had my motor built by a very reputable race motor builder we used a really good oil with the zinc additive and ran the boat at 2000-2500rpm for about 20 mins. he said for a tappet cam if you don't do it this way then the cam will go flat. after we ran it for the 20-30 mins we shut it down changed the oil and added another bottle of the zinc and went to the lake and ran it around the lake at 2500-3000 rpm for a few hours changed the oil again and since then ive been givin her hell and all is good. A good oil with high zinc levels is your friend in a flat tappet motor

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    Already miss the 310/562 2manymustangs's Avatar
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    Quote Originally Posted by jamesblown97 View Post
    when I had my motor built by a very reputable race motor builder we used a really good oil with the zinc additive and ran the boat at 2000-2500rpm for about 20 mins. he said for a tappet cam if you don't do it this way then the cam will go flat. after we ran it for the 20-30 mins we shut it down changed the oil and added another bottle of the zinc and went to the lake and ran it around the lake at 2500-3000 rpm for a few hours changed the oil again and since then ive been givin her hell and all is good. A good oil with high zinc levels is your friend in a flat tappet motor
    My understanding of the procedure described above is that upon initial first run 30 +/- minutes you need to ensure that the came has as much oil/lube as possible thus the RPM of 2k - 3k...

    Not sure how available this oil is but it would be cheap insurance for the first few oil changes before switching to a full synthetic... I also dont know if doubling up on a zinc additive COMBINED with this oil is a good idea... At any rate this is a big issue and my engine builder/machinst buddy here in MO said that he lost MANY flat tappet cams when the oil mfgs removed the zinc and phosphorus from the conventional oils... Even lost some PREmaturely a while after break in... I for one wont build another flat tappet engine due to this, no matter the cost... In the long run a roller lifter set up is way cheaper than the cost and headache of loosing lobes on a cam...

    http://www.valvoline.com//products/c...ng-motor-oil/9


    Valvoline.com > FAQs > Motor Oil Car FAQs > Racing Oil
    Last edited by 2manymustangs; 07-24-2013 at 09:35 AM.
    Pat Eason, the voice of reason...

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