My GN needs a cam. Recommendations, manufacturers?

[SuperSix]

From what I have gathered reading the threads about zinc - during cam break in, you can't really have too much (within reason). After that - a moderate amount wouldn't kill it.

[Spoolin']

From what I have gathered reading the threads about zinc - during cam break in, you can't really have too much (within reason). After that - a moderate amount wouldn't kill it.

Right, so if you're running a performance oil that has the correct ppm of zinc, you shouldn't need an additive?

[SuperSix]

For regular use, es. I would load up on the ZDDP for the initial break in, that's it's main purpose anyway. Most cam manufacturers break in lube is mostly ZDDP anyway.

I have never used any additives in any of my cars though.

Nver had a problem either.

[Steve Wood]

Oils were recently discussed in this thread:

http://www.ihadav8.com/phpBB2/viewtopic.php?t=2238&postdays=0&postorder=asc&start=0

In this thread, read this link....  http://www.blackstone-labs.com/Newsletters/Gas-Diesel/November-1-2010.php

Some serious oil guys quoted there within.


here is some more info from LN Engineering that specializes in Porsches
http://www.lnengineering.com/oil.html#Z1

I did not look up the paper by the GM Oil engineers debunking the zddp myth but if you google on that, you will find it.

there is an increasing awareness that most of the hoopla is vendor driven.  All the articles on the subject originally were in regard to racing engines using very high valve spring pressures and crappy imported lifters....

Look around and you will be hard pressed to find significant cam failures on engines with with original gm lifters.  

Someone mentioned this as being reportedly good lifters...

I see they are supposed to be hardened.

http://www.taperformance.com/proddetail.asp?prod=TA_1405J

[SuperSix]

I was saying to only worry about the ZDDP during break in.

[Spoolin']

I have Lucas cam break-in additive, which was recommended by my engine builder.

[Steve Wood]

most definitely use plenty of cam break in additive with zddp

no disagreement there

[Wrecked Em]

No ZDDP additives here and no issues.

I would definitely use liberal amounts of break-in lube/additive initially.

My input on oil, long story short, I know someone that is an engineer with BP and suggests 1 quart of full synthetic with the remainder dinosaur oil. This yields ~ 94% of the advantages of running all synthetic. This has worked well in my cars for the past 10 years with no failures.

[SuperSix]

Interesting concept.

[Spoolin']

I purchased some Mobil 1 15w50 after doing all the research. I'm not going to use it with the initial break-in, but after I drain it out I'll be replacing the break-in oil with it. The zinc content is 1300 ppm from the info I received from exxon mobil. I have it in writing in case anything goes south.

Speaking of break-in, Everything is together and if I get time today, I'll be turning it over!!

[SuperSix]

Make time!!

[Buca]

Make time!!

X2 Plus Video of start up......... :psix;

[Spoolin']

Its starts, it runs, and its off the hoist!! I was going to take it for a drive and break in the rings, but after having a sunny, 79 degree day last week here in WI, today we got a mix of rain, sleet, slush, and snow. The damn salt trucks were out tonight too.... Hopefully the rain we get tomorrow will wash up the roads and I can take it for a ride on Thursday. This weekend I'm going to detail the whole car and get it clean. I got my decklid back finally and I'm not real happy with the outcome, but oh well live and learn - its still way better than it was.

[Spoolin']

You can see the nice layer of dust on the car:

[SuperSix]

Fuckin sweet.