High Oil Temp = power + throttle response loss?

TARDCORE

lol I was in 2nd and was doing about 30 mph and bounced it off the rev limiter. When I went to shift to 3rd I looked in the mirror and the civic still somewhat kept up. I was expecting to completely lose him but I wasnt pulling as strong as I though. When I did this I must have been at 265 degrees or womewhere since it was right after I decided to pass the cars. One of my friends has an 08 C6 coupe and that thing pulls on the Z like you wouldnt believe. But in comparison, the Z and the C6 compared to the Z and the Si, there would be a much larger gap between the the Z and the Si than the vette. Im just confused as too how people notice any gains from the bolt ons on this car. When I started modding my RSX I didnt notice any gains until I K-PRO'd it and even then all I felt was torque. Not sure how much faster it made it top end wise. The last thing I do will be FI LTH and then Ill re dyno it to see if full bolt ons will help as much as I think they will. Im a little disappointed with the Z. It takes turns great but an S2K and civic... not right man. not right.

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ChrisSlicks

Maybe your engine did receive some damage from the prior incident. You'll have to go up against another Z or hit the dyno.

KillerBee370

Don't you have an oil cooler? If your oil temp hits above 150 I believe it goes into limp mode.

azn370z

My manual states 280 degrees is when the engine cuts back power.

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KillerBee370

280?! That seems awfully high. I thought it was 260. Even still, I never get above 220 during normal driving and never over 230 at the track.

Oil cooler ftw...

Trips

I don't see anything past 230 with aggressive driving, and I'm not running a cooler yet...

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D3Daddy

Same here, although at my 1st oil change I decided to go with Motul 300V 5W-30 and I have noticed that my temps run a tad cooler and are much more stable. They do not spike when I am at WOT. Just been my experience. I will probably go with the Nissan Oil Cooler at my next oil change just to be cautious as the weather her in CA has been pretty cool since I have had my Z...

fxroar

I live in San Diego as well and I always do spirited driving. I have not gone anywhere above 230 running high RPM and trust me.. when I drive.. I drive HARD. Raced s2k and Civic Si's. Never had a problem leaving them behind by a great distance. I always run VDC on (for safety purposes), I do NOT have aftermarket cooler and I do NOT have LSD since my car is base w/o sport.

I DO feel a tiny bit difference at WOT at 230 compared to 170-180, but ever since I got the INJEN Cold Air Intakes.. inside cabin has yet to warm up as it used to and Temp has yet to climb up as fast as yours.

I gotta tell you though.. there's a blue 08 or 09 Civic Si Sedan that must have at least a SC or possibly T/TT installed that lives around San Diego. Had a very rough race going home from LA on Interstate 5 a couple of months ago.. and boy that Civic can go. Never seen one of that type that had so much torque. Had to Red line every single gear (usually starting on 4th gear @80mph - puts me around 4k something RPM - WOT to red line and maybe some on 5th gear does the trick for me) and even after the shift to 6th after red lining the 5th.. the car was only about 4-5 cars back.

Some of the members here are right. Do NOT assume they are bone stock because of the way they sounded or looked. Mods such as lighter crank pulley, resonators on exhausts etc etc.. are mods that are in stealth or provides stealth and can easily make you think them cars are "bone stock"

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davidyan

Well at 280F, the ECU would limit the revs. Even if limiter didn't start to reduce your rev's yet, at 260F, there could still be some moderate power loss just from the engine being very hot.

Minicobra1

Ok, first off, the S2000's little 4 banger puts out about 240bhp, and the car is about 600lbs lighter then the 370z. That motor is putting out a 120bhp per liter in comparison to ours which is about 89bhp per liter.
Real world test on the S2000 is 0-60 5.7 average, 13.8 1/4 mile. Now, compare that to the Z's numbers and tell me how much do you really think you were going to pull on it?

Also, your assuming they were stock, how do you really know, could of had a mellow exhaust and a tune, who knows, but even a stock S2000 will give you a run for the money. Heck my Mini Cooper Turbo sounds pretty stock, but with the tune I have and the mild cat back, intake, etc. it has surprised more then a few Vette's, Mustangs, etc. putting out 200fwhp and it's only 2500lbs :-)
Damm near as quick as the 370z.

Anyway, don't feel bad, there is nothing wrong with your car, you just didn't know what you were up against

On a side note, my Z, without a doubt, runs a little slugish when the oil temp hits 220, I can definitely notice the difference in responsiveness on a hot day compared to when the temps are in the 180 range. Only fix for that is an aftermarket oil cooler, which is something I will definitely be purchasing in the future.

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Red370

I owned an S2k for a good while as one of my first tuner cars, while the horsepower was decent, theres only so much 162 ft/lbs will do for you. Mine actually dyno'ed at 173whp and 117 ft./lbs on a dynojet, broke my heart really. Truth be told, given its history, the S2k is a solid track car, but he should have pulled quite a bit. I'm a weekend warrior at the drags here, usually race one ever other week, and like i stated before, theres usually 1-1.2 second ET difference. Keep in mind that he also has the FI exhaust and G3's.

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MightyBobo

That torque difference isn't going to mean much when the cars aren't at a dead stop.

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Xan

Remember that at 100MPH, 1 second is about 150 feet...


But to the OP, you lost because you weren't on a drag strip and your Z knows....

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TARDCORE

Unfortunatel the S2K was stock because I know the kid who drives it. The only reason I say WTF to why I didn't pull on it was because once I did get full bolts and tune on my RSX I could keep up with S2K's easy. I really think there might be something wrong with my Z after the oil cooler exploded. When I start it up and let the temp get to 180 every gear pulls pretty solid above 3500 rpms. I am not expecting any huge gains off the G3's and FI cat back together but asking for at least 25 rwhp would make a difference in trap speeds. Im tempted to dyno the Z right now before I get my LTH installed but id rather find out once I get them. Either way, I know what I saw and I saw me attmept to pass a Civic Si and S2000 and once I got near the S2K he gunned it and I already was in the top of 2nd and once I shifted into 3rd I slowly, slowly pulled ahead. It was so slow that I was considering breaking and just going back into the lane behind both cars. The S2K doesnt even trap 100 mph. Like someone said earlier at that rate of speed 1mph is a huge difference. Even ET of .1 seconds is a difference in distance. So if I was going by the power to weight ratio, the Z with my mods wins over the S2K. Embarassing moment for me.

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kannibul

Well, in this case, I'd say it was the driver that made the difference.

1) I've yet to crack 260F with even some seriously "get you thrown in jail" type driving after 20-30 minutes. The fact that you claim to have hit that or higher, well...shows how you have no clue what you're doing and where you're at.

2) You didn't know it was a race...or claim to. That gives them a serious advantage.

3) This is talking about a street race, which I imagine would cause this thread to get locked as street racing isn't condoned.