405 blues and such
MTAYLOR.US.ORACLE.COM (MTAYLOR@us.oracle.com)
01 May 98 18:29:49 -0700
Hello, a few subjects here:
The gas tank on the 405 Mi16 of Cliff Poulin: you will do not better than
you
have already on the 15 gallons of used gas. The tank is nearly bone dry when
it will accept 15 gallons. You are seeing the symptoms of running out of
fuel.
Your guage seems to be out of calibration. You should get the orange low
fuel
lamp at around 14 gallons of fuel used. You could have a bad sending unit.
To Tomas_t, who I replied to already about the bad radiator: you need a new
one. Having had a leak that you repaired with a sealant, that shows that the
radiator was going bad. Placing a mixture of leak repair will do in many
fine
radiators just by their inherent ability to fix leaks. The coagulation of
the
sealant will also close off good passages that are already partially
clogged.
Unless there is a good radiator repair facility nearby that you can use,
that
radiator is scrap material now.
To Derya in Turkey: sorry to hear about your engine failure. I think that
Jim
Lill's suggestions are good, but maybe a little on the conservative side.
The
4000 RPM limit would be good to observe for 100-200 km, but never exceeding
that limit for 3000 km would be a waste. Just do not stay in any one RPM
range
for extended periods of time during the first few hundred km. That is bad
for
any engine that is breaking in. Also, the oil pump for the 405 Mi16 is
expensive and probably unnecessary to replace without good reason. The pump
in
my engine at 165 Kmiles still put out the required 4 bar/60 psi rate at 3K
rpm
per the manual and at 195+ Kmiles now, still stays within that range. There
is
more than enough pressure from the pump, which auto-regulates at those
pressures and dumps excess pressure above that range. I have a mechanical
oil
pressure guage that I installed while the engine was out of the vehicle in
1997. You could do a retrofit with merely removing the intake manifold to
access the unused sensor port are (the sending unit with no wire attached on
the Mi16.) I removed my battery tray and routed copper 1/8" tubing through a
stainless steel braid-covered nylon tube across the front side, though the
battery tray, beside all a/c insulated pipes, out to meet poly 1/8" tubing
to
penetrate the firewall and run to the guage, which is mounted to the
removable
tray at the bottom of the console.
The main and rod bearings in those engines do get worn and would be a great
thing to replace preventively, with no need to pull the engine to do so, if
removal of the engine is inconvenient. The wrist pins also showed no wear in
my engine at the 165 Kmile overhaul. A great suggestion like Mike Savage
does
is to add top cylinder lube to an engine that is breaking in and also for a
broken in engine, as Mike does.
As for gasoline octane: I ran 93 octane exclusively and noticed that it
tends
to cause excessive carbon buildup. I am now running a 90 or so blend, where
I
half fill my tank with 87 and half fill it with 93. Performance is there and
I
am anxious to learn of any possible reduction in carbon benefits. I never
hear
pinging from pre-ignition.
As also stated recently, the 8 valve and 16 valve engines for the 405 have
many shared parts and technologies. Wet sleeves as well.
Mike Taylor, Nashua, NH, USA