Solid and flat. Use an oil with adequate amounts of phosphorous and zinc,
possibly a higher viscosity (15-40, 15-50, ........), and a valve adjustment
may help.
Seems more than a few R engined roadster owners are having a tough time
eliminating the tick, tick noise and are just adjusting to the least noise
level........
myself included......
Daryl
----- Original Message -----
From: "David Boerst" <dboerst@yahoo.com>
> Are the lifters on the 1600 Mechanical or Hydraulic? The engine makes a
> fairly loud tick-tick-tick. Not a main or rod bearing thud type sound. has
> great oil pressure but seems to run a little hot. I live in Arizona so....
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