As you may remember
, a couple of weeks ago I lost most oil pressure. I dropped the pan and found the problem. I safety
wired the culprit
up and put my engine back together and back on the back of the Velocity and cranked her up and got significant oil pressure as expected. I could see it pumping freely out a hose I left open when I cranked the starter with pumps/coils/injectors
off earlier.
Now, my question is, what is considered correct oil pressure at different power settings? Before when I ran the engine at idle (on my engine, usually 1500 - 1650 rpm, my oil pressure would be around 33-35 psi. I remember this cuz
, on my EM2
it is preset to start flashing an alert if the oil pressure goes below 35 psi, so I was always bumping up the idle a bit to keep it from flashing the alert.
Now, however, it seems that at about the same RPM I am getting only about 30 ish
PSI at the same RPM and have to rev up to about 2200 rpm to get the pressure to 35 or above. IIRC
, when I apply power to about 6200 rpm the pressure goes up to the mid 50's
or a little more...maybe hitting 60.
I had thought I read somewhere that the EM2
was set to alert on oil at 30, but Tracy has had my unit a couple/few times, so I am thinking the 35 must be correct for low pressure.
I am still sorting some final engine details out and this was noticed.
It does seem I have mostly
gotten my hot start process worked out. No prime, mixture at about 2:30 and a few rotations it sputters alive. I think I had been flooding it before. I also have to turn off the fans as the extra energy seems to be needed to get it to spark up. I do think I need to replace my batteries as I have kinda
beat the hell out of these two. Cold start has never been much of a problem. Usually 4-6 primes and a bit of mixture advance and it is usually good, throttle about half way open, then pull back to idle once it engages.
Perhaps I am killing the engine now with the different oil pressure, (new filter, new oil) but the engine seems to be running damn strong otherwise. Pretty cool now that the temps are only in the low 90's
. I can bring power up for much longer now that ramp temps are not in the 120's
.
ONE hose did have a small flap inside. I corrected this before I sent the hoses off to be pressure tested....fwiw
.
As with many things, especially
it seems with this engine, my only consistency
is inconsistency
.
Back to the internet to see what else I can find out.
All the best,
Chris