How hot is too hot - Transmission

2012 Nismo · 08-29-2017, 06:33 PM

Hello Group:

I read someone on this Forum discussing they needed to take breaks on track day because their transmission oil gets too hot.

I have the stock transmission oil gauge with temperature markings in Fahrenheit but no red markings on the gauge to let me know when hot is too hot.

At what transmission temp do I need to back it off, and let it cool down?

Thanks

Raidernation · 08-29-2017, 06:59 PM

That's the engine oil temp. Limp mode kicks in around 260.

Rusty · 08-29-2017, 10:34 PM

If you have the manual. What happens is the clutch fluid boils in the clutch line next to the left side exhaust pipe. And you lose the clutch pedal. The fix is to wrap that clutch line with insulation.

osbornsm · 08-30-2017, 11:01 AM

Transmission doesn't have a temperature gauge...

Therefore... it's fine.

2012 Nismo · 08-30-2017, 02:59 PM

I should have mentioned I have the manual transmission.

So the round gauge on top of the dash is engine oil temp.

What are the little dots below the fuel dots? Water temp?

The person discussing transmission oil temp must have put in an aftermarket gauge. Do I have to worry about transmission oil on a manual? I know nothing about transmissions.

Also heard on this thread that if my engine oil gets too hot the car automatically goes into limp mode. Is that correct?

Sounds like the only heat issues I need to deal with on the track or brake fade and clutch heat.

Chuck33079 · 08-30-2017, 05:59 PM

You're going to need an oil cooler for track use, or spirited street driving. Or simply for commuting in warmer climates.

You're correct, the dots are water temp.

Rusty · 08-30-2017, 06:55 PM

Quote:

Originally Posted by 2012 Nismo

I should have mentioned I have the manual transmission.

So the round gauge on top of the dash is engine oil temp.

What are the little dots below the fuel dots? Water temp?

The person discussing transmission oil temp must have put in an aftermarket gauge. Do I have to worry about transmission oil on a manual? I know nothing about transmissions.

Also heard on this thread that if my engine oil gets too hot the car automatically goes into limp mode. Is that correct?

Sounds like the only heat issues I need to deal with on the track or brake fade and clutch heat.

I thought you might have a manual.

The dots are water temp.

No, you don't have to worry about tranny temps on a manual. Just insulate the clutch line like I said in an earlier post.

The Z will go into limp mode if the engine oil gets too hot. The ECU will start to pull timing first. I believe it starts at 240deg, and increases as the oil gets hotter. At 260deg, the ECU will go into limp mode. Not allowing rpm's over 2,500 I believe.

If you are planning to do trackdays. 34 row oil cooler. Bleed your brakes with good brake fluid. Something like Motul 600. Insulate your clutch line. And read this thread.

Track Day Best Practices - MUST READ

Hotrodz · 08-30-2017, 07:13 PM

The better you get and the faster you go the more you will have to deal with heat soak and over heating. You will need to change your fluids more as well. I change my oil after each track weekend or no more than two track session between oil changes. Brake and clutch depends on various signs and symptoms.

Sent from my SM-N910P using Tapatalk

jchammond · 08-30-2017, 07:23 PM

Quote:

Originally Posted by Hotrodz

The better you get and the faster you go the more you will have to deal with heat soak and over heating. You will need to change your fluids more as well. I change my oil after each track weekend or no more than two track session between oil changes. Brake and clutch depends on various signs and symptoms.

Sent from my SM-N910P using Tapatalk

Ain't too many people cranking out 900hp like yours!

Hotrodz · 08-30-2017, 07:30 PM

Quote:

Originally Posted by jchammond

Ain't too many people cranking out 900hp like yours!

Lol, 240* to 260* oil temps and boiling brake fluid happen on 150hp brz's! Mine just just get there faster and the is why I have a big cooler and lots of ventilation.

Sent from my SM-N910P using Tapatalk

Rusty · 08-30-2017, 07:59 PM

Quote:

Originally Posted by jchammond

Ain't too many people cranking out 900hp like yours!

.............................and he's still slow.

jchammond · 08-30-2017, 08:28 PM

Quote:

Originally Posted by Rusty

.............................and he's still slow.

Just wait until he puts those eleventy's on there; then he'll dial it to "Hi-Boost"

Hotrodz · 08-30-2017, 09:15 PM

Quote:

Originally Posted by Rusty

.............................and he's still slow.

Just fast enough...

Sent from my SM-N910P using Tapatalk

Spooler · 08-30-2017, 09:21 PM

^^^^ Not bad for an oldish fart. Old in the body, young in the mind. I am the same way. Rusty too.

Rusty · 08-30-2017, 09:21 PM

Quote:

Originally Posted by Hotrodz

Just fast enough...

Sent from my SM-N910P using Tapatalk

I'm going to start calling you..............Turtle.

08-29-2017, 06:33 PM	#1 (permalink)
2012 Nismo Base Member Join Date: Feb 2017 Location: California Posts: 12 Drives: 2010 370z Nismo Rep Power: 8	How hot is too hot - Transmission Hello Group: I read someone on this Forum discussing they needed to take breaks on track day because their transmission oil gets too hot. I have the stock transmission oil gauge with temperature markings in Fahrenheit but no red markings on the gauge to let me know when hot is too hot. At what transmission temp do I need to back it off, and let it cool down? Thanks

08-29-2017, 06:59 PM	#2 (permalink)
Raidernation Base Member Join Date: May 2016 Location: San Jose, Ca Posts: 174 Drives: 2016 GM Base 7AT Rep Power: 9	That's the engine oil temp. Limp mode kicks in around 260. __________________ 2016 7AT GM Base: Fast Intentions CBE 18" Res, Z1 Rear Diff Cover, Quaife LSD, Nismo S-Sport Suspension, Nismo Body Brace Kit, White Line Front Sway Bar, SPL Front End Links, Energy Rear Bushing, Z1 Post MAF Silicone Tubes w/ K&N Drop-in Filters

08-29-2017, 10:34 PM	#3 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,185 Drives: 2011 Nismo GM 6M Rep Power: 2684437	If you have the manual. What happens is the clutch fluid boils in the clutch line next to the left side exhaust pipe. And you lose the clutch pedal. The fix is to wrap that clutch line with insulation. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

08-30-2017, 11:01 AM	#4 (permalink)
osbornsm A True Z Fanatic Join Date: Jun 2011 Location: WHAT Posts: 2,551 Drives: 2018 Camaro SS 1LE Rep Power: 424	Transmission doesn't have a temperature gauge... Therefore... it's fine. Hotrodz, SG4247 and Zingston like this. __________________ 2018 Camaro SS 1LE (455hp) - 2011 Nissan 370z (333hp) - 2004 VW R32 (240hp) - 2000 Civic Si (160hp)

08-30-2017, 05:59 PM	#6 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	You're going to need an oil cooler for track use, or spirited street driving. Or simply for commuting in warmer climates. You're correct, the dots are water temp. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

08-30-2017, 02:59 PM	#5 (permalink)
2012 Nismo Base Member Join Date: Feb 2017 Location: California Posts: 12 Drives: 2010 370z Nismo Rep Power: 8	I should have mentioned I have the manual transmission. So the round gauge on top of the dash is engine oil temp. What are the little dots below the fuel dots? Water temp? The person discussing transmission oil temp must have put in an aftermarket gauge. Do I have to worry about transmission oil on a manual? I know nothing about transmissions. Also heard on this thread that if my engine oil gets too hot the car automatically goes into limp mode. Is that correct? Sounds like the only heat issues I need to deal with on the track or brake fade and clutch heat.

08-30-2017, 07:13 PM	#8 (permalink)
Hotrodz A True Z Fanatic Join Date: Aug 2012 Location: NW, AZ Posts: 9,330 Drives: 10 Nissan 370z Nismo Rep Power: 2684385	The better you get and the faster you go the more you will have to deal with heat soak and over heating. You will need to change your fluids more as well. I change my oil after each track weekend or no more than two track session between oil changes. Brake and clutch depends on various signs and symptoms. Sent from my SM-N910P using Tapatalk Rusty, Spooler and jchammond like this. __________________ *Fast Intentions TT Installed and Tuned by Seb at SpecialtyZ 610whp 560tq:\|Fast Intentions 3" TT-TDX*\|SpecialtyZ/Fast Intentions 72 Row Oil Cooler\|SZ 6 Puck Clutch & Flywheel\|3GsCustoms\|Z1\|Wavetrac\|Hotchkis\|Whiteline \|Blitz\|Fortune Auto 500\|Fujimura\|SPL\|H&R\|TK\|TWM\|RPM Rollbar\|Sparco\|Next Level Performance\|TrackSpec\|AeroFlow Dynamics\|Pioneer\|

08-30-2017, 09:21 PM	#14 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,800 Drives: 2013 Nismo 370z Rep Power: 2684392	^^^^ Not bad for an oldish fart. Old in the body, young in the mind. I am the same way. Rusty too. Rusty and Hotrodz like this.

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