[Healeys] Flywheel Timing Marks BN1
Brits'n'Pieces (Eric Frenken)
lists at brits-n-pieces.com
Wed Dec 10 09:26:42 MST 2008
my guess is that the vibrations are not drivetrain-related. Vibrations
occuring only at certain engine speeds are more likely to be engine-related.
From: healeys-bounces at autox.team.net [mailto:healeys-bounces at autox.team.net]
On Behalf Of Marvin James
Sent: Wednesday, December 10, 2008 4:27 PM
To: Healeys at autox.team.net
Subject: [Healeys] Flywheel Timing Marks BN1
When I rebuilt my BN1 engine I used a lightened flywheel that came with the
car (basket case). I don't know who did the machining of the flywheel but it
was nice work. The 1/4 timing mark had disappeared with the machining. The
rest of the engine machining was done locally by a machinist familiar with
Brit iron and having a good reputation. He also balanced everything. Right
after he finished my engine and before I assembled it he retired so was not
available for consultation.
What was the purpose of the original 1/4 timing marks? With the flywheel
balanced, why should orientation make any difference?
I've got an annoying vibration that comes on about 1500 RPM and I'm looking
for ideas. As soon as I convince myself it's not the driveshaft (don't think
it is), the gearbox comes out and the flywheel and clutch cover plate will
be rebalanced. I may go back to the stock flywheel. Not excited about
tearing a car apart when I don't even have it together yet.
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