High Oil Temp = power + throttle response loss?

TARDCORE · 02-26-2010, 01:02 PM

Quote:

Originally Posted by TipsZ

Why would you buy another GTM Oil Cooler after the last incident? Or are you referring to upgrading to the larger setrab cooler?

true. but I figure if I have installed by "professional" the issue wont arise hopefully but I am most certainly not skilled enough to even drive the car hard enough to best the standard size oil cooler. I never saw what had happened to Travisjb but I haven't asked him what kit he had. I like the Z a lot, even though I say I hate it and shoulda waited and bought a Z06. I want to enjoy the Z As much as I can before I get rid of it but you guys will see once I post the vids. If you're not sugar coating your statements and DO NOT see oil temps over 230 with aggressive driving, you'l be in wtf mode all day once I post the vids. My car will shoot from 210-230 in just a 1st-3rd gear pull at WOT. it bugs the crap out of me.

btw did your package arrive in good condition or did they play soccer with it?

TARDCORE · 02-26-2010, 01:15 PM

Quote:

Originally Posted by theDreamer

If you were at 265 the car might be in first stage limiting mode, slightly.
Also, you said you were going uphill and at those engine temps you are getting massive amounts of heat soak into the air intake system.

Overall I would just say your car was just running hot, I know your past with an oil cooler, but a better intake & oil cooler at those temps will help keep the car running at maximum output even when hot.

i agree. i think i may have experienced some sort of electronic limiter. i remember reading that once the Z had over 5k miles on it the oil cooling issues wasn't as bad. Im hoping that may be the case since my car has a little over 2000 miles. i think its really gonna show once I re dyno it with full bolt ons to see wether or not my past issue with the oil cooler damaged anything or not.

initialgemini · 02-26-2010, 01:30 PM

If you were at the top of X gear and then floored it, do you think you experienced your VDC kicking in without knowing it?

FuszNissan · 02-26-2010, 01:33 PM

Quote:

Originally Posted by initialgemini

If you were at the top of X gear and then floored it, do you think you experienced your VDC kicking in without knowing it?

That's a good point.

I would just put some Unicorn Blood in her, and she will fly!

tbonesteak · 02-26-2010, 01:36 PM

I guess I'll say it but yes, the Z feels significantly slower at hot oil temps. Running the car WOT at 180 vs 220 has a very very noticeable difference in acceleration and throttle response. I thought I was hallucinating so I performed a series of tests and my theory was correct. Like someone said, the Z really hates heat. In cold, it is such a champ tho.

I've owned an AP2 S2000 (the faster version in a straight line). The S2000 is a quick little car but you should definitely have beaten it by a big margin. When I used to run my s2k against 350Zs, i would slowly pull from away from the DE motors (03-04) but the HR ones (07-08) would completely OWN me. Not just once but exact same results with multiple cars and even driver changes. The 370 and the s2k aren't in the same performance class anymore, and i actually believe you when you said you couldn't pull away because at 260 degrees, my Z feels slower than my s2k felt.

TARDCORE · 02-26-2010, 02:15 PM

Quote:

Originally Posted by initialgemini

If you were at the top of X gear and then floored it, do you think you experienced your VDC kicking in without knowing it?

it was definetely off. Ive gotten into a habbit of turning it off as soon as I start the car. Unless the road is road is wet, even damp, i dont want some unexpected tail kicking.

I think once I re dyno Ima ask if I can get a 3rd single pull on the dynojet and get the oil temp near 260 and put it on the dyno. then we can all see once and for all if its the case.

TARDCORE · 02-26-2010, 09:28 PM

Ok well here the vids are. For everyone saying they dont see high temps heres what I see very day.

Here is a daily drive through a back road to work. I was in 5th gear the whole time. Video was taken after about 15 mins and the speed was from 50-70; 60-65 being the average.

Here is a shot at night obviously. Watch the oil temp move jsut from 2 pulls. Imagine if I was a track and always about 4k rpms... and the optimum would be at least 5k.

Here ya go. Only a few pulls and look how high it is. This was take only a few mins of driving after the one above. There is something wrong with my car for it to be increasing in temps so quickly.

initialgemini · 02-26-2010, 10:59 PM

Oh i believe you about the oil temps shooting up. On my way home I drive up a steady incline for about 14 miles in traffic and I see temperatures easily reach 220+ on a cool day. On a warm summer day, I can get the needle around 250.

The engine heats up pretty fast. So loss of power due to heat soak would not be surprising.

1slow370 · 02-26-2010, 11:13 PM

first off i have gotten the engine hot so i believe you, second if i'm going over 50 and cruising i'd be in 6th not 5th you'd be suprised how much that effects your oil temps. when your cruising around try keeping your R's right around 2 not 3 thousand it will help considerably. i save the higher revs for when i'm having fun or racing it otherwise i stay low so that when i do want to screw around it's fairly cool. I can say that on a long road trip doing 73 on cruise control in 6th it stays right around 220

serge · 02-27-2010, 07:13 AM

Quote:

Originally Posted by 6MT

My question is... why were you street racing?

He wasn't.

MightyBobo · 02-27-2010, 07:39 AM

Quote:

Originally Posted by 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.

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

TARDCORE · 02-27-2010, 09:14 AM

Quote:

Originally Posted by 1slow370

first off i have gotten the engine hot so i believe you, second if i'm going over 50 and cruising i'd be in 6th not 5th you'd be suprised how much that effects your oil temps. when your cruising around try keeping your R's right around 2 not 3 thousand it will help considerably. i save the higher revs for when i'm having fun or racing it otherwise i stay low so that when i do want to screw around it's fairly cool. I can say that on a long road trip doing 73 on cruise control in 6th it stays right around 220

all the vids of going WOT were taken on regular roads here in SD. And since it was like 630 traffic was heavy so I couldnt really do any 6th gear cruisinjg. Too much down shifting then upshifting to get to 6th for a few mins isnt worth it. 3k rpms isnt a whole lot for most cars, so on the vids when I was driving during the day thats what it will look like at around 15 mins. When I drive to Hemet from SD and I am in 6th most of the time it will get around 230 at night.

kannibul · 02-27-2010, 09:23 AM

Quote:

Originally Posted by TARDCORE

lol kannibal. anyway you guys r missing the point. I was asking what the performance decrease is on the Z when oil temps r that high. no one has answered and I dont think anyone knows. I have recorded a few videos and I will show you there is something wrong with my Z. Today on the way to work I was in 5th gear at roughly 50-65 mph the entire time and the temp stayed at 210 degrees. later once I can get a chance I will get a video showing how fast it will go from 200-260. its really wierd

higher temps = lowered RPM limiter. 260F is first threshold, I think 280 is the next threshold.

Read the manual...it spells it out for you.

kannibul · 02-27-2010, 09:26 AM

Quote:

Originally Posted by theDreamer

Why does everyone think he was street racing?
He was passing two other cars that ended up street racing, he waited for the road to open and pass and they were waiting for the road to open to race.

Well, pretty simple, if you go to pass someone and they take off, you can decide not to participate and let off the gas.

If they slow down too and still won't let you pass, you can pull a .45 on them and that will distract them (because they'll have to look for their 9mm), meanwhile you can speed off and activate your stealth tech and get away.

Only one of those comments is sarcastic.

kannibul · 02-27-2010, 09:28 AM

Quote:

Originally Posted by TARDCORE

jesus. heres what happened. I (me) driving around on back roads above the speed limit. yes i stated above the speed limit. i came upon 2 cars, one was tail gating the other. the speed limit is 45 mph and they were doing approximately 30. i passed them once it was LEGAL to pass them. when I was about to pass the S2K he gunned it. Since I had WOT I figured Id humor him but it didnt turn out that way. Then like 1 mile later the last part of the back road ends in an uphill straight. the civic was right behind me and I wanted to see if my Z would get away from it, it didnt. Thats what happened. the civic wasnt a race, i was already infront him him.

Furthermore, when I get pulled over for speeding, if and when the cop runs my plates he hands me back my info once he receives the information and tells me to slow down, no ticket, no questions, nothing.why? because I have more than likely backed that chippie or sherrif up in a vehicle stop and if not, I probably will eventually. so if I want to do a little spirited drive early in the morning, I am going to as long as traffic is light.

Ill post the vids as soon as I get home. In 5th gear at 60 mph is under 3K rpms and thats usually my normal drive through that area. I didnt expect to get flamed and I am asking for some knowledge on the matter but hey its a forum. And unfortuantely in my opinion, the Z as a stock car isnt what I expected it to be. I am thinking of buying another Oil Cooler from GTM and having them installing it which will more than likely solve my issue then hopefully I can go to cal speedway or willow springs with many of the forum members in so cal here.

So you're either a lawyer, a cop, or a judge...

Either way, you think you're above the law.

Thank you for being the problem instead of being the solution.

02-26-2010, 01:30 PM	#33 (permalink)
initialgemini Enthusiast Member Join Date: Mar 2009 Location: Irvine, CA Posts: 340 Drives: 2011 FX 35 Rep Power: 251	If you were at the top of X gear and then floored it, do you think you experienced your VDC kicking in without knowing it? __________________ CY 370z \|Sports Package\| Berk CBE\| Berk High Flow Cats (awaiting install)\|BBS LM\|Eibach Pro-Kit Springs\|Stillen Sway Bars\|TWS Shift Knob\|B&M Short Shifter

02-26-2010, 09:28 PM	#37 (permalink)
TARDCORE Enthusiast Member Join Date: Jul 2009 Location: San Diego Posts: 410 Drives: 2010 Solid Red 370Z Rep Power: 16	Ok well here the vids are. For everyone saying they dont see high temps heres what I see very day. Here is a daily drive through a back road to work. I was in 5th gear the whole time. Video was taken after about 15 mins and the speed was from 50-70; 60-65 being the average. Here is a shot at night obviously. Watch the oil temp move jsut from 2 pulls. Imagine if I was a track and always about 4k rpms... and the optimum would be at least 5k. Here ya go. Only a few pulls and look how high it is. This was take only a few mins of driving after the one above. There is something wrong with my car for it to be increasing in temps so quickly. __________________ XBL:EVENTYDE

02-26-2010, 10:59 PM	#38 (permalink)
initialgemini Enthusiast Member Join Date: Mar 2009 Location: Irvine, CA Posts: 340 Drives: 2011 FX 35 Rep Power: 251	Oh i believe you about the oil temps shooting up. On my way home I drive up a steady incline for about 14 miles in traffic and I see temperatures easily reach 220+ on a cool day. On a warm summer day, I can get the needle around 250. The engine heats up pretty fast. So loss of power due to heat soak would not be surprising. __________________ CY 370z \|Sports Package\| Berk CBE\| Berk High Flow Cats (awaiting install)\|BBS LM\|Eibach Pro-Kit Springs\|Stillen Sway Bars\|TWS Shift Knob\|B&M Short Shifter

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02-26-2010, 01:36 PM	#35 (permalink)
tbonesteak Track Member Join Date: Mar 2009 Location: Socal Posts: 914 Drives: MY09 MB 6MT Rep Power: 376	I guess I'll say it but yes, the Z feels significantly slower at hot oil temps. Running the car WOT at 180 vs 220 has a very very noticeable difference in acceleration and throttle response. I thought I was hallucinating so I performed a series of tests and my theory was correct. Like someone said, the Z really hates heat. In cold, it is such a champ tho. I've owned an AP2 S2000 (the faster version in a straight line). The S2000 is a quick little car but you should definitely have beaten it by a big margin. When I used to run my s2k against 350Zs, i would slowly pull from away from the DE motors (03-04) but the HR ones (07-08) would completely OWN me. Not just once but exact same results with multiple cars and even driver changes. The 370 and the s2k aren't in the same performance class anymore, and i actually believe you when you said you couldn't pull away because at 260 degrees, my Z feels slower than my s2k felt.

02-26-2010, 11:13 PM	#39 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	first off i have gotten the engine hot so i believe you, second if i'm going over 50 and cruising i'd be in 6th not 5th you'd be suprised how much that effects your oil temps. when your cruising around try keeping your R's right around 2 not 3 thousand it will help considerably. i save the higher revs for when i'm having fun or racing it otherwise i stay low so that when i do want to screw around it's fairly cool. I can say that on a long road trip doing 73 on cruise control in 6th it stays right around 220