[Healeys] 100-4 timing
michael.oritt at gmail.com
Fri Nov 2 05:29:54 MDT 2018
34-35 at 3K rpm.
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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