----- Original Message -----
Sent: Tuesday, August 10, 2004 2:10
PM
Subject: [FlyRotary] Rebuild begins
In reading Tracy's book on rotary rebuild he mentions dropping a 3/16"
dowel
into the front cover oil passage leading to the pump drive after
removing
the oil injection pump drive. I talked with Bruce who
stated this is not
nessessary. Last I talked with Tracy this
morning, he was ankle deep in
coolant so I'm not bothering him anymore
today:-). Question, what is the
reasoning behind this dowel and is
it required?
Dana Overall
The dowel was to block oil flow. I later learned that there is
already a small orifice in the oil passage to restrict flow (to the injector
pump) so the dowel is optional.
I was planning on first engine start yesterday but when I filled the
cooling system & pressure tested, I noticed a small leak at one of the
intake manifold bolts (! ? ). Removed bolt and about a gallon of coolant
ran out. Now why would Mazda drill an intake manifold bolt into the
cooling jacket? Answer: Mazda didn't. Bruce decided to
add some manifold bolt holes to make it easier to mount manifolds. Nice
thought but wish he had let me know about them as well as the added "coolant
drain" feature.
Expect engine start after a day or two of rework.
BTW, I used a pressurized coolant expansion tank system this time and was
very pleased to find that the cooling system would fill completely through the
tank. Connecting the block vent at the flywheel end of engine to
the high port on expansion tank works really great.
Tracy (moping up coolant)