dbs1vette

I already have a mid sized setrab cooler on my 600hp LS3 based 416 running 5-50w Mobil One and still seeing temps as high as 325 degrees. Ideas?

Actually...it's the 0-50w race oil.

crease-guard

First thing I'd be concerned about with temps that high is am I getting enough air flowing through the cooler.

Those are pretty high for an external cooler.

Jay

avizandum

You might consider a thinner oil that will circulate more quickly. Don't know from experience, but some subscribe to that.

Z06trackman

Bigger cooler.
Doublle row radiator.
Insulate the oil lines next to the headers.
Tape the air dam to prevent deflection by airflow.
Water only with water wetter.
Clean the radiators thoroughly with compressed air from the rear.
Remove the fan shroud.
Remove the condenser.
Louvered hood (might be most important).
Do not use thinner oil until you get your temps below 260 or so.

dbs1vette

Brand new RD radiator which got water temps from 240 to below 210. Cooler is right in front of radiator which should allow plenty of airflow (it's on an 02 camaro which has large frontal opening vs vette) and dual elec fans.

I realize the temps are too high...hence the post, and yes, not going to go thinner oil until we figure this out.

Thanks for the replies.

Bills Z06

You didn't say how many RPMs you hit before shifting, or how long you carry the gears. You might try short shifting to keep the revs lower.

rfn026

I would go to a thinner oil. The 50W is creating too much friction. Try a 0W-30. You'll see a drop.

btw - 210 is a little low on the water temp. You want to be between 215 and 220. Maximum power is usually around 240 - but that's only a couple of bhps.

Richard Newton
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dbs1vette

My shift light is set at 6600 with the rev limiter set at 7000. After just a few laps and getting a feel for it I am shifting at 6500. On a previous session the shift light was down at 6100 and I would not shift until 6200 just because I was leaving so much power still on the table. The temps were not much different.


After about 5 laps the water temps actually hover between 215-220 in 82 air temps. Before the new radiator that was 235-250. I'll take the lower water temps for sure. I've gone from 133 mph down a 3/8 mile straight with the former LS1 to 140 mph with the new 416 and I push it pretty hard, going into a hard left hand sweeper carrying that corner as high as 65 mph or so.

waddisme

After fighting high oil temps on my stroked LS2, I just got the 40 row Setrab and now, I never see oil temps above 260*, even at VIR in July with ambient at 105*. It covers 1/2 my Dewitts, but coolant still maxes around 215*. I assume your lines are -10an or bigger. Wouldn't think it was an airflow issue with water temps being what they are. Good luck with it.

dbs1vette

On Setrabs site I see they rate them at hp levels. Yours is 450-550. I am currently a little over 600 and may bump it up another 50, so maybe the next size up, or perhaps a fan kit with it?

What kind of power does your stroked LS2 make?

Z06trackman

Thinking about this some more with the additional info, you should not be seeing oil any where near that high, especially as compared to your water temps. Since your water temp is good, I am thinking that you are not getting any (or very little) oil flow to or through the cooler. Something is wrong there. Do you have an oil thermostat? If so remove that and see what happens. You might try a different cooler (if even the same model) just to see what happens. Let us know what fixes it. Good luck.

waddisme

I am at 510+ rwhp.

rithsleeper

Kind of a side question, i know removing the fan shroud helps radiator wise, however thinking for me, what about removing fan and shroud? Really moving 60-120mph constantly would not require a fan and it would prob hinder air flow... does anyone do that, just run no radiator fan on the track?

PushinTheLimit

I know of a couple of guys in the southeast have done this and made it work for them.... maybe they'll chime in here about that. The only downside is sitting in grid with no fan, it will get hot quick.

ktlspider

I agree. There's too much disparity from coolant temp to oil temp here. Coolant temps within acceptable range and oil temps way above acceptable says something's not jiving here.

I'm not saying coolant temp and oil temp are supposed to be the same. Oil temp is going to be higher because it's typically exposed to more heat. True the cooling system is absorbing alot of heat around the cylinders and heads via the water jackets around the cyls and the coolant passage in the heads. But oil is still typically quite a bit hotter. Hence the reason for an oil cooler, to help reduce the heat at the source- the oil.

Just saying that they should be quite a bit closer in temperature. I've seen other makes of cars running around 260 oil and the coolant temp is around 190-200.

Where is the oil temp getting it's signal from?