It could be because #4 inherently runs hotter than the other cylinders. That
is why it is critical to keep your heater valve open, even in the summer.
Especially in the summer.
Brad
On Wed, Jul 22, 2009 at 9:22 AM, <robertduquette@sympatico.ca> wrote:
> What I can't figure ... ( okay there's lots of things that I can't figure )
> is
> why some components go and others don't? ie: why 4 and not 1, 2, and 3
> also?
>
>
>
> > Date: Wed, 22 Jul 2009 08:58:02 -0500
> >
> > 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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