----- Original Message -----
Sent: Sunday, September 20, 2009 8:05
AM
Subject: [FlyRotary] Re: Another mixed
day out at the hangar
The first bad news is that I replaced
my romote oil filter mount and installed a new filter. As I have
mentioned here I have had it leaking at the rubber filter seal. The
old one looked ok, but since replacing the filters no less than three
times and knowing that the eye cannot see all inperfections, I replaced
the mount AND filter (K&N 2004 filter). But, NO JOY. It is still
leaking where the filter mounts. It IS seeping from the filter seal
and NOT the two hose connections...no doubt on this. I know the
rotary's oil pressure is higher than other engines but I would not think it
would be so much that it is overwhelming this standard mount and seal.
This is just a standard screw on remote oil mount made out of AL...Made in
the USA. Looks like many others I have seen. Y'all have any
ideas.
Chris,
When I was much younger, and much more foolish, I
had a 66 mustang fastback with all the go fast additions. The engine was
lowered in the frame and moved back a ways to help the weight distribution.
Doing so required a remote mount oil filter. I had a terrible time with leaks.
There was no internet at the time, and info was hard to come by, especially in
BFA.....(a popular derogatory phrase involving the substitution of Arkansas
for Egypt). Eventually I figured out that the problem was the fittings not the
oil filter. I had NAS type fittings and braided lines from the block to the
filter mount. The filter mount had female NPT threads. Being that I was a
perpetually poor kid, I used some brass hardware store fittings for the pipe
thread to NAS joints. Two problems: Pipe threads are terrible and I hate
Teflon tape because it is a pain in the ass, leaks, and the shreds can get
into delicate stuff and clog/break things. The second problem was that
although the NAS fittings will thread onto the hardware store fittings, the
tapers are incompatible and will not seal adequately. The solution was to get
proper NAS fittings and to use a good high quality PTFE based pipe dope. Pipe
dope is messy, but it is one of the best things I ever discovered. It always
seals the first time, and will simply dissolve into hydraulic fluid or oil and
will not harm or clog anything.
I had thought the casting was bad or something,
but the seep was only happening when the engine was warm and the oil was thin.
It was small and drained down into the filter/seal area and by the time I
looked at it the evidence of the seep was gone..... Check carefully when the
engine/oil is warm and have somebody rev the engine while you look very
carefully at the area around the fittings with a bright light.
I HATE TEFLON TAPE!!!!
I HATE PIPE THREADS!!!
I never got a ticket in that car (which is a
minor miracle), but your brothers in blue used to pull me over constantly just
to look at the car.
Good luck.
Monty