oil overheating unique to vq37vhr engine?

bluzman · 09-05-2010, 08:15 PM

Jmo

stacy001 · 09-05-2010, 09:00 PM

HAHA.. nice

Mt Tam I am · 09-08-2010, 10:43 AM

Quote:

Originally Posted by atx370z

My oil temp gets to 230 pretty easily here in Texas. (Freeway driving.)

The real question is.... what temperature is "too high" and when should i be worried?

Ill be getting an oil cooler within the next few weeks.

Good idea. I am only at 220*-225* on the freeway, and am often over 250*-260* within a mile or two of spirited driving. I am having mine (oil cooler) put on Sept 20 when they replace the short block.

ChrisSlicks · 09-08-2010, 11:35 AM

The Genesis coupe needs an oil cooler if you are going to track it hard. The oil temps easily climb towards 300 degrees, the main difference ... the car has no oil temp programmed limp mode - neither did the 350Z where oil temps could also hit 300 degrees on the HR engines.

KaienZ34 · 09-08-2010, 12:11 PM

Quote:

Originally Posted by ChrisSlicks

The Genesis coupe needs an oil cooler if you are going to track it hard. The oil temps easily climb towards 300 degrees, the main difference ... the car has no oil temp programmed limp mode - neither did the 350Z where oil temps could also hit 300 degrees on the HR engines.

If you put a oil temp gauge and a programmed limp mode of 280* then hit the track most to all cars would go into limp mode like the 370.

Pharmacist · 09-08-2010, 09:01 PM

so basically all cars overheat the oil, but nissan is the only one that bothered to protect the engine and put the limp mode there? that definitely doesn't reflect too good on the other car companies

Red__Zed · 09-08-2010, 09:24 PM

Quote:

Originally Posted by KaienZ34

If you put a oil temp gauge and a programmed limp mode of 280* then hit the track most to all cars would go into limp mode like the 370.

Not after a couple laps...

A stock s2000 will chill below 240 or so after a day on the track.

m4a1mustang · 09-08-2010, 09:40 PM

Yeah... the Z gets hot really quick. The factory cooling just sucks for high performance applications.

Mag350Z · 09-08-2010, 09:52 PM

what are your thoughts on how the mustang and 370 compare?

m4a1mustang · 09-08-2010, 10:19 PM

Quote:

Originally Posted by Mag350Z

what are your thoughts on how the mustang and 370 compare?

I'll send you a PM in a minute. Don't want to derail Pharmacists thread.

cossie1600 · 09-08-2010, 11:12 PM

Nope, modern cars are designed to run hotter as oil has improved (especially with synthetic). Oil are at their most efficient point around 200-240F, this is why most cars have operating temperature in that range. Also what is causing the heat, RPMs!!!! I can see a 5-10 degree drop in temperature simply by shifting 700 RPM earlier than normal. Unless you are tracking the car or drive in heavy traffic or in hot weather, I honestly wouldn't worry about it as long as you have high quality oil in the motor and change it when you need it.

You don't hear about problems on other cars because they don't have a gauge.....

Fabsnoop · 10-12-2010, 04:13 AM

what about the lack of air flow? Car and driver tested the brakes on several cars. Our cars failed hard. They said it was because of a lack of air flow to the brakes. Does that have any correlation with the oil temps?

cossie1600 · 10-12-2010, 08:42 AM

Airflow has nothing to do with it, there is nothing to cool the oil to begin with! Modern oil can tolerate much higher temperature compare to what it used to. As long as the engine is built with the tolerance in mind, it doesn't matter. Most cars cruise at 205-220 now compare to the days of 160-180F. Oil are more efficient in the 200 range and it is better for emission.

The brake issue is overblown. The car has 14" rotors and giant calipers, I am sure it isn't as bad as the 350 on 12.7" single piston caliper. It's the pads! Sure more airflow helps, but most street cars don't have ducts anyway.

XwChriswX · 10-12-2010, 11:17 AM

Quote:

Originally Posted by m4a1mustang

I'll send you a PM in a minute. Don't want to derail Pharmacists thread.

Thats a first for you...

Lug · 10-12-2010, 11:48 AM

Quote:

Originally Posted by Pharmacist

so basically all cars overheat the oil, but nissan is the only one that bothered to protect the engine and put the limp mode there? that definitely doesn't reflect too good on the other car companies

Nissan changed the way it made bearings (dropped lead out of the formulation) and as a result saw a rise bearing failures at sustained temps over 300. 280 was the point they decided was a good place to limit to give themselves a bit of a buffer. I have no idea oif other car companies have done the same thing with their bearings.

09-08-2010, 11:35 AM	#19 (permalink)
ChrisSlicks A True Z Fanatic Join Date: Mar 2009 Location: North East Posts: 6,203 Drives: 09 370Z Sport M6 Rep Power: 653	The Genesis coupe needs an oil cooler if you are going to track it hard. The oil temps easily climb towards 300 degrees, the main difference ... the car has no oil temp programmed limp mode - neither did the 350Z where oil temps could also hit 300 degrees on the HR engines. __________________ Hotchkis ARB \| Stillen CAI \| Art Pipes \| Berk CBE \| Stillen AP Racing Brakes \| AE Performance Oil Cooler \| BC Racing ER Coilovers \| Doran Control Arms

09-08-2010, 09:01 PM	#21 (permalink)
Pharmacist A True Z Fanatic Join Date: May 2009 Location: Toronto, Ontario Posts: 1,249 Drives: 09 370z Sport 6MT Rep Power: 18	so basically all cars overheat the oil, but nissan is the only one that bothered to protect the engine and put the limp mode there? that definitely doesn't reflect too good on the other car companies __________________ 2009 370z Sport Touring/Nismo shift Knob/Z1 motorsports 34 row oil cooler

09-08-2010, 09:40 PM	#23 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	Yeah... the Z gets hot really quick. The factory cooling just sucks for high performance applications. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

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09-05-2010, 09:00 PM	#17 (permalink)
stacy001 Base Member Join Date: Jun 2010 Location: Las Vegas Posts: 73 Drives: 2010 370z 40th 6MT Rep Power: 15	HAHA.. nice

09-08-2010, 09:52 PM	#24 (permalink)
Mag350Z Base Member Join Date: Nov 2009 Location: South Florida Posts: 95 Drives: 2011 GS Corvette Rep Power: 16	what are your thoughts on how the mustang and 370 compare?

09-08-2010, 11:12 PM	#26 (permalink)
cossie1600 A True Z Fanatic Join Date: Jun 2009 Location: californee way Posts: 5,380 Drives: 370, Leaf Rep Power: 30	Nope, modern cars are designed to run hotter as oil has improved (especially with synthetic). Oil are at their most efficient point around 200-240F, this is why most cars have operating temperature in that range. Also what is causing the heat, RPMs!!!! I can see a 5-10 degree drop in temperature simply by shifting 700 RPM earlier than normal. Unless you are tracking the car or drive in heavy traffic or in hot weather, I honestly wouldn't worry about it as long as you have high quality oil in the motor and change it when you need it. You don't hear about problems on other cars because they don't have a gauge.....

10-12-2010, 04:13 AM	#27 (permalink)
Fabsnoop Base Member Join Date: Aug 2010 Location: Los Angeles Posts: 34 Drives: Nissan 370z Rep Power: 15	what about the lack of air flow? Car and driver tested the brakes on several cars. Our cars failed hard. They said it was because of a lack of air flow to the brakes. Does that have any correlation with the oil temps?

10-12-2010, 08:42 AM	#28 (permalink)
cossie1600 A True Z Fanatic Join Date: Jun 2009 Location: californee way Posts: 5,380 Drives: 370, Leaf Rep Power: 30	Airflow has nothing to do with it, there is nothing to cool the oil to begin with! Modern oil can tolerate much higher temperature compare to what it used to. As long as the engine is built with the tolerance in mind, it doesn't matter. Most cars cruise at 205-220 now compare to the days of 160-180F. Oil are more efficient in the 200 range and it is better for emission. The brake issue is overblown. The car has 14" rotors and giant calipers, I am sure it isn't as bad as the 350 on 12.7" single piston caliper. It's the pads! Sure more airflow helps, but most street cars don't have ducts anyway.