You guys with distributor problems are just beginning to find all the fun.
Firstly P's originally ran 20 degrees advance starting @ 2000 rpm & all
gone by 4000.00. However, remember that todays fuels are all different.
I hope the chap who is running 7.4 compression ratio is not using Avgas
as that is a slow burning fuel & totally wrong for our cars. I have
several original P-type distributors and graphs etc from Lucas so if
numbers are needed I can assist. Again, I must point out that a second
hand distributor is very likely to have been changed in more way than one
in over 60 years of use. So be careful.
Very similar distributor was used in some Hillmans.
Good luck
Pip Bucknell
Australia
"Robert Grunau" <cgrunau@pathcom.com>
Sent by: owner-mg-mmm@autox.team.net
11.09.2001 08:59
Please respond to "Robert Grunau"
To: <Kellmg@aol.com>, <mg-mmm@autox.team.net>
cc:
Subject: RE: Distributor
Hi Brian,
You must supply the specific distributor part number, usually a 5 or 6
digit
number starting with 4 and possibly ending in a letter. The DK4A is only
the
model number. Hundreds of different distributors have this model number.
I have a Lucas parts book which begins in 1939, your P type distributor
may
be listed and if so we can at least find the total advance and possibly
some
intermediate advances for various RPMs.
Regards, Bob
Hi Guys,
Can anyone supply information regarding the curve of the DK4A Distributor?
Recently, on the list, it was suggested that an 8 degree auto advance be
fitted.
What was the original advance on the P Type? I had mine on a "Sun
Analyzer"
and it was way over advanced. Are new shaft and action plates available in
different degrees? Nothing mentioned in Dowley's catalogue.
The compression ratio on mine has been raised to around 7.4 to 1.
Any and all info. gratefully received.
Brian Kelly.
PS.
As a matter of interest the DK4A signifies,
D- distributor
K- cast iron body with molded contact breaker base and die-cast auto
advanced
weights.
4- cylinders.
A- auto advanced.
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