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132
142
Exp. Type
HPDE
Exp. Level
10-20 Years
San Jose
One last thing I promise. 210F max oil temp is too cool, especially if running E85 which will cause a cooler running engine for a variety of reasons. 210 is below boiling and water does get into oil through many ways mostly being carried by ethanol which has a strong affinity to it, and just from the humidity in the air. It is desired to be boiled off in the oil above 212 of course. Last post on it and if you and Shaun are comfortable with it that's good. Cup engines run oil temps at 265F by the way.
Can't really compare anything we do to what a cup car is doing.. They don't fart without a reason for it. LOL

They run their water temps 280F+ without worry, not sure most people's cars are designed to handle that
 
5,768
6,908
Exp. Type
W2W Racing
Exp. Level
20+ Years
Pleasanton: 1/2 way between Sonoma and Laguna Seca
Can't really compare anything we do to what a cup car is doing.. They don't fart without a reason for it. LOL

They run their water temps 280F+ without worry, not sure most people's cars are designed to handle that
Currently running in the 190/210 area on water myself. Very happy I'm not fighting temp or oiling issues.
I'm making good power, making a lot of rpm with 100% reliability with a damn near stock motor. Stuff just works.
I could probably block some of the radiator to warm things up....probably should.
 

steveespo

Lord knows I'm a Voodoo Child
Moderator
3,851
1,481
Exp. Type
Time Attack
Exp. Level
10-20 Years
Cookeville TN
Can't really compare anything we do to what a cup car is doing.. They don't fart without a reason for it. LOL

They run their water temps 280F+ without worry, not sure most people's cars are designed to handle that
They run warm for aero, weight and friction reduction. Warm oil is less drag on the rotating components. Smaller radiators with higher operating pressures are less weight, thats why an S550 with 21 lb cooling system is better than 16lb in a S197, you want the cylinder jackets to be warm. Sal is happy so I'm ok too, but I would love to see his oil temp at the inlet side of his filter block.
 
132
142
Exp. Type
HPDE
Exp. Level
10-20 Years
San Jose
They run warm for aero, weight and friction reduction. Warm oil is less drag on the rotating components. Smaller radiators with higher operating pressures are less weight, thats why an S550 with 21 lb cooling system is better than 16lb in a S197, you want the cylinder jackets to be warm. Sal is happy so I'm ok too, but I would love to see his oil temp at the inlet side of his filter block.
Oh for sure, I know the advantages. I'm running a 35 psi pressure relief system on my car. It's all un tested still, but it should work well.

Maybe we can convince him to add another gauge there.. For research purposes
 
5,768
6,908
Exp. Type
W2W Racing
Exp. Level
20+ Years
Pleasanton: 1/2 way between Sonoma and Laguna Seca
Oh for sure, I know the advantages. I'm running a 35 psi pressure relief system on my car. It's all un tested still, but it should work well.

Maybe we can convince him to add another gauge there.. For research purposes
I do have an extra trans temp gauge in the dash that I'm not using....it could happen. lol.
Seriously, I am probably over cooling the oil....5/50 is good thin oil but that's probably cooler than it should be.
I can tell you this, and you've seen me do it, I start the motor in the pit and warm it up. Then I arrive at grid and let it idle with the water pump off (electric pump with no thermostat) and let it idle until I see some water temp then flick the pump on....then it sits idling for probably 15-20 min in grid and when I head out to the track the oil temp is just starting to show movement....there is 16 quarts of oil in the system and it takes quite a while to warm it all up. (No thermostat in the oil system either, I don't like extra restriction in the lines) So that and my big cooler with super duper ducting is probably overkill. I think I am going to add grill blockers to my list of upgrades for next year. That and ABS and a transmission that stays in gear...the rest will have to come from setup refinement (gonna experiment with RC height and rear sway bar some more) shock adjustments and hopefully driver improvements. I can't really get the car much lighter and I can't really make any more power easily/cheaply enough so that's just going to have to be enough. And maybe a little luck....that won't hurt either.

EDIT: I have a 35 psi system too.
 

Duane Black

Curbs go brrrppp
509
353
Exp. Type
Time Attack
Exp. Level
5-10 Years
Durham, NC
mkay... a long session of 2:11s/couple of 2:10s...


cold michelins doing cold michelin stuff...





and the video for all the HPDE bros to yell "wheres your instructor?" and "lap time will come naturally with smoothness" or "you're trying too hard" and "you're a menace to society"

 

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