[Mg-mmm] Lube for Marshall 75

[Chris Bucknell]

Hiro,

Lube for blower is definitely needed.  We are running MK22 spitfire blower
on our P-Type (Marhsall style).  We have run about 6 drops per minute with
no problem for many years.  This is just fed from the sump and I run a
15W-50 generally.

Just increase the amount of drops when you are racing.  You will know when
you have too much as you will start to foul plugs at high speed.

Alternative is to put oil in fuel.  On R-Type we use a fully synthetic oil
in the fuel as it dissolves easily.

Let me know if you need anymore.

Chris

-----Original Message-----
From: owner-mg-mmm at Autox.Team.Net [mailto:owner-mg-mmm at Autox.Team.Net] On
Behalf Of Hiro Nishio
Sent: Sunday, 16 November 2008 8:38 PM
To: mg-mmm at autox.team.net
Subject: Lube for Marshall 75

Dear MMM friends,

Recently I purchased and installed a Marshall Z 75 to my J2 racer.
It is driven from crankshaft at engine speed and gives around
10psi - enough for the road use.

Now I have a question - oil (I use 20W-50 mineral) to lubricate 
gears is going out to the inside of the blower through the 
shaft very quickly, and I wonder if some continuous lubrication 
is necessary.
Some book says "6 drops per minutes" supply from cylinder head 
using metering pin is appropriate...

Awaiting your experience and advice. Thanks.

Hiro Nishio
Kobe, Japan

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