Back in 2002, I took the engine that came with my Bugeye (a rebuilt 1275)
and put it in the 65 Sprite. I bedded in the cam, and started driving it.
Within 2 months, I had a rounded lobe on #4 intake. It wasn't until all this
discussion on the ZDDP, and the lack of it, that I realized with had
happened. Of course, at the time, I was running Castrol 30 wt.
Brad
On Wed, Jul 22, 2009 at 8:46 AM, David Lieb <72spridget@gmail.com> wrote:
> Billy wrote:
> > The ZDDP thing is for real, but it's a slow engine killer. It cuts your
> > engine life by maybe half. It's also an important factor if you have a
> > gearbox that takes motor oil. Gears really need an extreme pressure
> > lubricant.
>
> Larry wrote:
> > I recently bought an AL V-8. It came out of an MGB and had less than 500
> > miles on it. The mutt crashed it that fast. I looked at the cam and two
> of
> > the lobes were wiped. One of the lifters looked like a bad case of acne.
> > Less than 500 miles.
>
> My understanding is that it is a slow killer of a properly broken in
> engine. OTOH, in a newly rebuilt engine, the absence of zddp can lead
> to early failure. The evidence is way beyond anecdotal at this point.
> The new oil is ok for the new technology engines and the absence of
> zddp extends the life expectancy of the catalytic, but it is certainly
> an issue with Spridget engines.
> David L
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DON JULIO 1942
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