[Fot] distributors (2nd part)

[Van Mulders Marcel]

Reading the comments on my timing problem, I agree that it may well have
something to do with the drive gear or the distribution chain. I'l try to
post pictures of the camshaft bearing modification on this forum,with a link
or an attachment.
Marcel, Belgium
-----Oorspronkelijk bericht-----
Van: Kenneth Knight [mailto:kknight at klaenv.com] 
Verzonden: maandag 24 februari 2014 16:12
Aan: 'Van Mulders Marcel'
Onderwerp: RE: [Fot] distributors (2nd part)

Marcel:

I have been using a Mallory for years with no issues.  Timing is rock steady
at 7k on the dyno.  The problem that I have found is with the drive gear,
these are no longer available and most have significant amounts of play.  I
have several that I would not run in a race engine any longer.  That could
be a big part of your problem.  This is a part that would be very expensive
to remake, but I would buy several if they came available.  

Ken

-----Original Message-----
From: Van Mulders Marcel [mailto:van.mulders.marcel at telenet.be]
Sent: Monday, February 24, 2014 12:16 AM
To: 'Dick Stockton'
Cc: fot at autox.team.net
Subject: Re: [Fot] distributors (2nd part)

Hi Dick,
I've been a fan of  you since I've read(more than once) the article about
you in one of the books of Kas Kastner.
About the unsupported section of the cam shaft where the driving gear for
the distributor/oil pump is located : this area is supported in my engine by
2 1800 bearings. The camshaft cannot flex anymore. It was an awful lot of
trying. These bearings get oil by drillings from the main oil gallery.
I run this engine with the bearings since 2 years now without any problem
(7000 rpm max). Kas Kastner has pictures of this modification and is very
enthousiast about it. And I'm proud of it. I can send you pictures as an
attachment of an email Marcel

  _____

Van: Dick Stockton [mailto:stocktontr4 at gmail.com]
Verzonden: zondag 23 februari 2014 23:02
Aan: Van Mulders Marcel
CC: fot at autox.team.net
Onderwerp: Re: [Fot] distributors (2nd part)


Marcel,


The cam is likely flexing causing the erratic timing at higher rpms. The
gear is in an unsupported section where a bearing should be and the cams
flex and break at this location. Cutting down the base circle for more lobe
lift makes it worst.


Dick



On Sun, Feb 23, 2014 at 5:41 AM, Van Mulders Marcel
<van.mulders.marcel at telenet.be> wrote:


Yesterday I swapped for an identical Mallory distributor, with cap and leads
and no play in the shaft bearing. Also tried a new coil and ran the engine
without alternator : no improvement at all. So I'm looking for another type
of distributor. Any other suggestions to improve the timing?
Marcel, Belgium (I lost part of the mail when sending it)
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