[Healeys] Healey 100-4 timing
waschu2 at gmail.com
Thu Nov 1 14:32:58 MDT 2018
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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