Camshaft failure

Michael Pliska · 06-19-2009, 10:36 AM

A couple of questions:

1) Is the zinc and single-weight oil necessary for break-in with a roller cam BBC? Using Total Seal gapless second rings.

2) Is an additive necessary for an already-broken-in hydraulic flat-tappet SBC?

For both these engines, I plan on using (at least until I run out of it) older Castrol GTX 20W-50. I've had a few cases of the oil around since I used to run both cars back in the early 90's. I've already been using it in engine #2 since I put in new rings and bearings (just reused the camshaft and put the lifters and pushrods in the same locations).

Regards,

06-19-2009, 10:36 AM	#26
Michael Pliska Member Join Date: Oct 2008 Location: Happy Valley, OR Posts: 260 Likes: 0 Liked 0 Times in 0 Posts	Re: Camshaft failure A couple of questions: 1) Is the zinc and single-weight oil necessary for break-in with a roller cam BBC? Using Total Seal gapless second rings. 2) Is an additive necessary for an already-broken-in hydraulic flat-tappet SBC? For both these engines, I plan on using (at least until I run out of it) older Castrol GTX 20W-50. I've had a few cases of the oil around since I used to run both cars back in the early 90's. I've already been using it in engine #2 since I put in new rings and bearings (just reused the camshaft and put the lifters and pushrods in the same locations). Regards, __________________ Michael Pliska 643 S/G

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