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Posted for <daveleonard@cox.net>:
> I've had multiple conversations with David about oil injection... and
yes,
>his
> RV installation includes the stock oil injection system, and I believe
he
>uses
> Amsoil. Last time we spoke Dave advised me that the oil injection
system
> really doesn't "inject" the oil in the sense that it enters the
combustion
> chamber as a mist or stream, rather that it causes a droplet of the oil
to
> emerge from the injection port and then be wiped away by the apex seal.
> FWIW.
Except, have you forgotten that there are 4 oil "injection ports? 2 in
the
rotor housings and 2 in the intake manifold. At least the ones in the
intake
manifold are probably intended to aerisolize the oil.
Dave Leonard
[Thanks for keeping me honest. You're right, I'd forgotten about the
nozzles
in the manifold and never asked Dave about them. Next time we speak,
though....
<Marv> ]
In the third gen RX-7 and definitely in the RX-8, the oil is injected only
into the rotorhousing. I believe this is the case on David Atkins'
installation.
I have been so happy with the wear (or lack of) when using pre-mix that I
will continue to use it. The only measurable wear on my 856 hr. engine was
on the apex seals (very little) and *no* measurable wear anywhere else. The
step wear on the side housings was exactly the same depth as when I put the
engine together. I did not have the sidehousings ground flat before
assembling.
Tracy Crook
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