Cam Eval

Donny, excellent advice. I'll look for a zinc additive.

I put the old lifters in the boxes that the new lifters came in and marked each box with location each lifter came from. At the very least, I want to take a few apart and look at the internals, but likely will end up tossing them at some point.

 

Is this what I'm looking for to add to oil?

http://shop.advanceautoparts.com/p/...63/7660006-P?navigationPath=L1*14926|L2*15035

 

Yeah, Lucas break in oil....that's what I use.

 

There used to be a GM EOS (engine oil supplement) that was usually recommended, but it's been discontinued. A web search points to the Lucas stuff as an alternative. Jegs also sells a product.

Apparently there is a replacement product from GM - http://www.gmpartsdirect.com/results.cfm?partnumber=EOS With a GM PN, you should be able to get it across the parts counter at any GM dealership.

Do a Google search of GM EOS and you'll find lots of links.

There's also cam assembly lube that you smear directly on the cam https://www.google.com/#q=cam+assembly+lube Your new cam may come with some of this.

 

The use of a break in oil additive is a good choice , but the real damage is caused early on during the initial start up period when things take a while to get totally lubricated.

I use this Red Line assembly lube all the time in the Race Motors...........a must for cams , lifters , bearing , gears and anywhere else there is any potential for metal to metal contact until oil is supplied there .......Even if you prime the motor that still does not do a 100% job for pre-lubrication since allot of these old motors relied on the system of "Splash" from other components..........clings to parts and does a real good job.

http://www.redlineoil.com/product.aspx?pid=77

 

The Corvair people have beat the ZDDP / flat tappet issue to death. Their board (corvaircenter.org) has a member (richard1) who knows a lot about oil. He put his advice here: http://www.widman.biz/Corvair/English/Links/Oil.html which is basically that any CI-4 oil will do, although I remember him emphasizing that CI-4 Plus is NOT THE SAME as a bare CI-4 so it's best to look for one that is ONLY CI-4. Mostly oils formulated for Diesel engines like Shell Rotella will have this in one of their weights, although they are not all the same. I think it's the 15W40 so that's what I use.

It is a real issue, and it's worth looking into, but I totally trust this guy and his discussion on the issue makes sense to me.

 

This is what I've always been taught as well.
Don, your pm box is full, I'm trying to get ahold of you.

 

Valvoline Zr1 race oil has lots of Zddp/zink in it for flat tappet cams, little expensive though.

 

I put the new lifters and pushrods on the old cam, changed the oil and put a bottle of this in:


http://shop.advanceautoparts.com/p/...63/7660006-P?navigationPath=L1*14926|L2*15035

Runs very quiet and smooth. I'm going to change the oil again after 1,000 miles.