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Oil Temp Reading

silver gts-t
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Beer Baron Grand Master

Beer Baron

Posted
Posted

yeah silver I'd go as far to say the oil cooler is not working properly at all.

In the GTR running around 260kw atw my oil temp sits between 80 and 90 all the time, and certainly doesn't go up just cruising on the free way. The figures you have sound about normal for a car without any oil cooler.

You really need to cut out that splash gauge and preferably fit a louvered extraction vent or at least do a swiss cheese job on it. then build a little duct around it running up to the opening in your front bar. your welcome to have a look at mine if you need some inspiration.

Beer Baron Grand Master

Beer Baron

Posted
Posted

yeah well the way it's mounted now is practically in a sealed box so it's doing fark all cooling. except a small radiation effect. you may as well have installed it in the boot, or your neighbours car for all the cooling benefit you're getting! lol

jazza08 Mentor

jazza08

Posted
Posted

Just for reference the R33 gtst in the driveway sits at 79 degrees all day everyday regardless of stop/start or highway driving. It moves around 2-3 degrees when you give it some for a while...

Is the rb20 different?

Would of thought it'd be a good idea to get a thermostat and set the oil temp abit lower (say mid to low 70s) will make the engine run cooler and make abit more power too (or so i read in speed lol)

jazza08 Mentor

jazza08

Posted
Posted (edited)

Sorry my bad, thats water temp that sits just under 80 degrees not oil temp, oil temp is slightly higher as ud expect, sorry i got confused for a sec hehe

If you don't agree with running oil slightly cooler being an advantage thats your opinion, the magazine i read obviously feels differently, personally i don't care either way lol!

Edited by jazza08
Craved Grand Master

Craved

Posted
Posted

is there an actual benefit to having the oil at 50 degrees over 80 degrees ?? for example ..

if the cooler keeps it at 80 all the time, would you see any benefit with performance or longevity if it was at 50 degrees instead.

jazza08 Mentor

jazza08

Posted
Posted

I think 50 might be abit low, but by keeping core engine temps lower the parts operate at a lower temp and will last longer and perform better. Ill have a look later but what i saw was something along those lines! It wasnt a MAJOR drop in oil temp like 30 degrees like you mentioned tho dude, more like low-mid 70s i think!

Im sure someone with abit more knowledge could input on this if they had a read...

Busky2k Veteran

Busky2k

Posted
Posted

What I mean guys, is that going below a certian temperature point where there is no real advantage. Oil works best between 70-100C. Going too cool and the additives are not functioning in their optimum temp range and the oil viscosity is getting too thick.

I'm not saying oil coolers are no good, thats misinterpreting. It means using oil coolers to keep oil in this range for heavily modified cars. It is good to keep the oil temp as close to the coolant temp as possible. If there is major differential, then an oil cooler is needed.

And jazza08, what magazine/article are u referring to? If running cold oil was the bomb, then we might aswell run around with 30C thermostats too.Chasing more hp outta your motor by running cold oil certianly is the wrong way to go about things! If that were the case we'd put our cars on the dyno cold!

jazza08 Mentor

jazza08

Posted
Posted

Put your car on the dyno cold and expect things to blow up as they aren't at operating temp... ill go have a look abit later through some of the speed/hpi n any other mags i have to see where i read it coz i cant remember off the top of my head!

30 degree thermo's would obvioulsy create problems with the parts running too cold which they aren't suited for, however a few degree's lower i read wasnt such a bad thing. Who knows ill report back some findings i could be way off lol

jazza08 Mentor

jazza08

Posted
Posted

Ok this is what i was talking about, taken from Perth street mag, even though its a v8 the principles of a cooler motor/parts should apply to all engines.

"With new themostat in place, the engine typically runs 10 degrees cooler but still remains within the acceptable bounds for the standard PCM (above 70 degrees). The standard themo opens at 93deg and is fully open at 105deg. The new thermo starts to open at 80deg and is fully open by 87deg. As a result the enginer runs a higher ignition advance, normally between 5 to 7deg more than normal. At cruise rpm this additional timing is noticeable in the seat of the pants, giving snappier accel and throttle response. With the thermo fitted to a BA GT the peak power result at the wheels rose 3kW but the real story lies in the torque curve which was reaised across the majority of the rev range, with a peak gain of 100N at the wheels"

This is where i read this and got the idea from! Nismo offer a lower temp thermostat for skylines, obviously Nissan must think that its some sort of gain?

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