> 3. Removing the oil injection pump in order to avoid combustion residue
> from the four stroke oil out of the oil pan.
> The opening left from the pump drive should be covered with a aluminum
> plate. Do you have a picture of such a cover plate and how to fix it
> onto the front cover(JB-Weld or bolt on)?
>

Paul,
An ALUMINUM plate should not be used for this purpose. Make it out of 4130
steel, the drive pinion will be forced against the plate during operation,
and will wear out an aluminum plate.

Bill Schertz
KIS Cruiser #4045
N343BS (reserved)

Or... since it is disassembled.... remove the drive shaft and gear.

-- 
Paul Lamar ...No rotor no motor.


I was wrong. DO NOT REMOVE THE SHAFT. You will lose oil
pressure.


-- 
Paul Lamar ...No rotor no motor.

Thanks for your comments.
So whats the right practice. Just remove the gear from the shaft? In that
case I don't need the cover plate? How does this drop of oil pressure happen?

When i showed you the pics of the disassembled engine core you wondered where
the rusty deposits in the water jackets come from.
I assume it comes from the water pump gear, which was the only
bad rusted part i found.

Kind regards
Thomas


The metering pump shaft is pressure fed with oil to lube it. Some of the
oil escapes to a reservoir that feeds the oil metering pump at atmospheric pressure.
It is a rather tricky and some would say a mickey mouse way of doing it.
Mazda was forced into it due to the fact the oil metering pump is an
Mikuni off the shelf item designed for two stroke engines and designed
to be gravity fed.

Yes is you wish to remove the gear and leave the shaft in there that should
work. Then make sure the inside end end of the shaft does not come out of the bore
beyond the e-shaft. There should be a shoulder in the bore that prevents this
from happening. When I get back to LA in about a week I will check this
on the RX8 front cover as well as the 2nd gen engine. I might get a
chance to check it in the next couple of days if somebody happens to
bring an RX8 front cover to Sun n Fun.

You will still need the cover plate as some of the oil can leak or seep out
around the shaft.

What did the inside of the end housings look like as far as rust
was concerned? They are the main generators of rust.

Paul Lamar ...No rotor no motor.

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