[Healeys] 100-4 timing

[warthodson at aol.com]

One area of dispute in our local club is how to set the Max advance at 3000RPM. 
Some say the vac advance tube must be disconnected from the distributor when setting max advance, some say it does not. Still others said it would not make any difference. This was proved to be false after checking the advance reading with the vac tube connected and disconnected. It did make a big difference. But the basic question remains should it be set with the vac advance connected or disconnected?Gary Hodson


-----Original Message-----
From: Michael Oritt <michael.oritt at gmail.com>
To: Wayne Schultz <waschu2 at gmail.com>
Cc: Austin Healey <healeys at autox.team.net>
Sent: Fri, Nov 2, 2018 7:25 am
Subject: Re: [Healeys] 100-4 timing

34-35 at 3K rpm.
Best--Michael Oritt
On Fri, Nov 2, 2018 at 12:40 AM Wayne <waschu2 at gmail.com> wrote:

Sorry I forgot to ask the question.  Where are other Healey 100-4 owners 
setting their timing?

Hi everyone


                     My friend Bob and I have his rebuilt engine back in 
and running after its crankshaft failure. It is currently 89MM bore with 
a DWR1 camshaft similar to the 100M Cam specs. The head is a previously 
installed Denis Welch aluminum head that we has to mill slightly because 
the crank failure allowed the #4 piston to hit the head. The valves were 
ok.  During the break in period we have the timing set to 8 degrees 
advance at idle.  Bad me I don't know what the advance is at 3000 rpm 
with the Mallory distributor. We plan to check it this week and keep the 
advance to around 35 degrees total advance. The engine is running great 
with 8 degrees advance at idle, backing it off to 6 degrees the engine 
was not as happy. Using 93 octane gas with 10% alcohol.  Ethanol free 
gas is available near our house in Maryland but not here in CT.
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