Camshaft break-in March 30, 2020 10:33AM
Should I take the time to break in my flat tappet cam in a case 504? Seems lots of people don’t but the car guys claim it’s critical. Is it worth saving myself a few hundred bucks on an oil change? Thanks.
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Re: Camshaft break-in March 30, 2020 12:23PM
Dump some High zinc additives in and break it in just like you would any other flat tappet. Use just regular 40 wt. Or any other cheap heavy oil for break in. Then put the good stuff in it. However most good quality racing oils that you would typically run already have the zinc and additives in it.
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Re: Camshaft break-in March 30, 2020 02:05PM
Alright. Good call on the oil idea. Thanks
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Re: Camshaft break-in March 31, 2020 12:58AM
Any recommendations on zinc additives?
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Re: Camshaft break-in March 31, 2020 01:20AM
Here's a good option:


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Re: Camshaft break-in March 31, 2020 01:56AM
Thanks. I googled that up and found a write up saying one of those bottles (16oz) mixed into 4.5 quarts will be about 5000ppm zinc content, is there a number that I should be shooting for?
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Re: Camshaft break-in March 31, 2020 11:45PM
Make sure lifters are in good shape
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Re: Camshaft break-in April 01, 2020 03:35AM
They are brand new, but reliance brand... hopefully they hold. Heard too many stories about them.
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