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Old 06-07-2008, 09:47 PM
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Breaking in a SBC with diesel Oil?

I have read a few articles on this and would like to know what some of the builders on here think. I have also read that because of the conditioners that this could produce sludge if not evacuated properly. I'm close to having all my parts and will be finishing it soon. Any thoughts on best cam lube and engine lube for Assembly. I have a Lunati cam and I will probably use their lube like recommended. I look forward to reading your responses to the diesel oil break in.

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Old 06-07-2008, 09:58 PM
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Just use good quality oil and add a can of THIS stuff.
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Old 06-07-2008, 10:05 PM
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Using a good quality oil and a zddp additive was what I had initially thought, their are several zddp additives on the market I just wanted to know if others have done this and what their thoughts on it were.
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Old 06-07-2008, 10:50 PM
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Use the moly paste on the lobes and a good quality oil, make sure it fires right off and keep the r's up for the first 20 minutes. And NO killer springs in the heads until it's broke in! Diesel oil has no more protection than regular oil, unless you have some real old stock you can get your hands on.
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Old 06-07-2008, 11:13 PM
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so should I use my 550 lift springs or should i get a smaller set for the break in.
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Old 06-07-2008, 11:44 PM
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Quote:
Originally Posted by TorkMonster400
so should I use my 550 lift springs or should i get a smaller set for the break in.
If they're dual springs just remove the inner spring for breakin. That will reduce the spring pressure enough for breakin.
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Old 06-08-2008, 05:57 AM
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Quote:
Originally Posted by TorkMonster400
I have read a few articles on this and would like to know what some of the builders on here think. I have also read that because of the conditioners that this could produce sludge if not evacuated properly. I'm close to having all my parts and will be finishing it soon. Any thoughts on best cam lube and engine lube for Assembly. I have a Lunati cam and I will probably use their lube like recommended. I look forward to reading your responses to the diesel oil break in.
i used the diesel oil along with the zddp additive, i wasnt gonna take any chances. everything worked out fine, ill probably continue to use the diesel oil in the summer months.
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Old 06-08-2008, 07:09 AM
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If you are using a flat tappet cam you had better keep using zddp, or fortified oil looooong after your break-in period.
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Old 06-08-2008, 07:48 AM
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Quote:
Originally Posted by Stroke
If you are using a flat tappet cam you had better keep using zddp, or fortified oil looooong after your break-in period.
I'm using the Z28 springs and have been running basic Shell or Chevron 20-50 for 2 1/2 years with no problems. I don't think that every car maker uses roller cams in every engine, so it's possible that for a stock/mild engine, over-the-counter oils will be just fine.
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Old 06-08-2008, 08:08 AM
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Would Z-MAX be a good additive to add to your oil after break in?
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Old 06-08-2008, 10:02 AM
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I don't think that every car maker uses roller cams in every engine
Well, if you have a roller cam no big deal, if not, the typical otc oils will not have what you NEED in them.

No auto mfrs I am aware of use a flat tappet cam today, or, any of the last several years.

One only need look at the Comp Cams site's ' Flat Tappet Tech Bulletin' for further info in this regard. Oil that is...


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