Rick,
For what it's worth, out Aurora IRL installation guide (GM performance)
specified Mobil 1 15W-50 synthetic only at 80 psi. Maximum recommended water
temp of 195 F and oil target temp of 203 F with a max of 230 degrees. Heat
rejection at peak power was 54 hp to the oil; 150 hp to the water at those
guide lines.
Those guys frightened me so we tried to do the right thing.
Don
Sent from my iPad
On Jul 30, 2013, at 12:50 PM, "Rick Byrnes" <Rick@RBMotorsports.com> wrote:
> To the waterHi doc
> try rickbyrnes@comcast.net Comcast recognizes your isp as one that sends
spam and blocks, so it may block this address too. otherwise txt 3133198544
>
> Back on the subject of oils, Brian you are right about 50 wt Mobil 1, but I
NEVER made a run with oil temp at least 150 deg f and at 180 H20 temp. The
N/A motor now on methanol has a heat exchanger inside the oil tank with
coolant flowing thru it, and I preheat both lube and coolant. On one of my
learning visits to the salt, I watched somebody destroy a Carillio rod when he
made a "cold" pass.
> My old turbo motors were easier to preheat, and had lots of bottom end
clearances that like it once everything was warmed up. I flowed lots of oil
at 60 to 70 pounds pressure.
> There may be a few HP in running on the fine edge, like nascrap, but they
have more resources than all of us combined. AND the run only 1 lap
qualifying. I would look at Indy car qualifying at Indy for better data.
Problem is getting data.
> Good luck this year. I'll be quietly watching.
> Oh, I am back to work on the liner, and have finally started enjoying it
again. Life is not normal, but getting better.
> I will never be quite the same....
>
> Mayf, with production bottom end clearances I would not hesitate to use the
multiweight oil. _______________________________________________
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