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Chasing a 370Z @ ACS

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Old Jan 17, 2010 | 10:55 AM
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Default Chasing a 370Z @ ACS

Hey all,

Here are two vids at Auto Club Speedway, SpeedVentures event.
This is really the only video I was able to capture. It's mostly all of a 370Z. This car is all stock and it's a fast machine for sure. I really had to work on chasing him down in my 350Z.

Anyway, I'm sure you all will let me know what I'm doing wrong as usual

External video of 370Z at ACS:
http://www.youtube.com/watch?v=q8UM702HPgA

In Car video:
http://www.youtube.com/watch?v=JL4_IpXu0E0
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Old Jan 17, 2010 | 11:36 AM
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i luv these types of vids - in-car cams during track days.

daym that Z pulls hard on straights but he couldnt outrun your skills.

great driving. great track!

may i know what brake/suspension setup were u running? tnx

looks like some of those guys in front of you were understeering like hell.

Last edited by 350Zdj; Jan 17, 2010 at 12:13 PM.
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Old Jan 17, 2010 | 12:20 PM
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Camera angle on the wheel is informative. I will certainly not criticise your driving. Especially since I would be behind the 370Z AND you.

BTW if you named one positive characteristic about the 370Z what would it be?

And oh yes I will be getting myself some of those awesome baby blue gloves.
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Old Jan 17, 2010 | 12:28 PM
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Early/smooth on the throttle.

Did you cook your tires toward the end or just overdrive a little?

BTW, what kind of tires were you running?
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Old Jan 17, 2010 | 12:37 PM
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Well, my driving is not the best, I can assure you that.
And of course you need the blue gloves. Everyone else likes black or red

This is what I can tell about the 370 with out actually driving it. It seems very well planted in mid turn and turn exit. In the 350, I sometimes have a hard time keeping the rear end in place. It likes to slide out and I'll have to fight it to keep it on line. It's great for drifting, but when I want to get the fastest lap times, the 350 sometimes tends to loose traction at the worse times. The 370 can enter a turn and keeps its line with out much drama. Also, the power of the stock 370 was impressive. It pulled hard down the front straight. Much faster then I thought it would. I have intake, HFC's and an HKS exhaust and I had the 370 in high-end power, I could get past him as my speed at the end of the oval was about 147mph about 10 to 15 mph faster then the stock 370. The 370 can be a great track car with just a good suspension I think. I still like the rawness of the 350 though. Just something about working the 350 is very satisfying at that the track.
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Old Jan 17, 2010 | 12:46 PM
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Originally Posted by SuperKool
Well, my driving is not the best, I can assure you that.
And of course you need the blue gloves. Everyone else likes black or red

This is what I can tell about the 370 with out actually driving it. It seems very well planted in mid turn and turn exit. In the 350, I sometimes have a hard time keeping the rear end in place. It likes to slide out and I'll have to fight it to keep it on line. It's great for drifting, but when I want to get the fastest lap times, the 350 sometimes tends to loose traction at the worse times. The 370 can enter a turn and keeps its line with out much drama. Also, the power of the stock 370 was impressive. It pulled hard down the front straight. Much faster then I thought it would. I have intake, HFC's and an HKS exhaust and I had the 370 in high-end power, I could get past him as my speed at the end of the oval was about 147mph about 10 to 15 mph faster then the stock 370. The 370 can be a great track car with just a good suspension I think. I still like the rawness of the 350 though. Just something about working the 350 is very satisfying at that the track.
Much appreciated.
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Old Jan 17, 2010 | 12:47 PM
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Originally Posted by Z1NONLY
Early/smooth on the throttle.

Did you cook your tires toward the end or just overdrive a little?

BTW, what kind of tires were you running?
I'm sure I was over driving the car. The tires are Nitto NT-01's. A great track tire that never really get to cooked on the track. I highly recommend them.
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Old Jan 17, 2010 | 12:57 PM
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What size NT-01's? I look around on trackhq somewhat often and you have an HR......don't you? Good Vid.
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Old Jan 17, 2010 | 01:24 PM
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Originally Posted by 03threefiftyz
What size NT-01's? I look around on trackhq somewhat often and you have an HR......don't you? Good Vid.
Thanks! Yup, it's an HR. I have the NT-01's on the stock 18" rims. I have a 245/40 up front and I squeeze a 275/35 in the rear. This is NOT the best set up, but it works pretty good.
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Old Jan 17, 2010 | 02:22 PM
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Cool Vid
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Old Jan 17, 2010 | 02:35 PM
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Great Vid
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Old Jan 17, 2010 | 06:28 PM
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You didn't waist any time getting those vids up! Looking good. What was your fastest lap this weekend?

Did you happen to run into Brent Jackson in his GT-R?
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Old Jan 17, 2010 | 06:42 PM
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Originally Posted by Sharif@Forged
You didn't waist any time getting those vids up! Looking good. What was your fastest lap this weekend?

Did you happen to run into Brent Jackson in his GT-R?
This wasn't my best day for times. I did manage to get a 1:58 but I only ran two run sessions. My goal is 1:55 on street tires.

I didn't get a chance to see Brent. I was meaning to stop by since he let us all know what garage he was in, but I never made it over. I did see a ton of GT-R's at this event though. It's a great track for cars like the GT-R. ACS always brings out the expensive hardware
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Old Jan 17, 2010 | 09:54 PM
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Originally Posted by SuperKool
Thanks! Yup, it's an HR. I have the NT-01's on the stock 18" rims. I have a 245/40 up front and I squeeze a 275/35 in the rear. This is NOT the best set up, but it works pretty good.
wait.. u mean to say you have this set up and yet the car is still throwing out its tail?

u got more negative angle upfront right?

im asking this cuz i had the same tyre setup and understeered like cr@p.
i even kept my front dampers to softer settings .


if u dont mind sharing your suspension setup.. that would be great
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Old Jan 17, 2010 | 10:03 PM
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Originally Posted by 350Zdj
wait.. u mean to say you have this set up and yet the car is still throwing out its tail?

u got more negative angle upfront right?

im asking this cuz i had the same tyre setup and understeered like cr@p.
i even kept my front dampers to softer settings .


if u dont mind sharing your suspension setup.. that would be great
Were you on r-compounds or 140+ treadwear street tires?
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Old Jan 17, 2010 | 10:08 PM
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Originally Posted by 03threefiftyz
Were you on r-compounds or 140+ treadwear street tires?
i was on 220 treadwear. does this actually make a difference? (sorry track noob here lol)
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Old Jan 17, 2010 | 10:35 PM
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NT01's are DOT legal here in the states, but are R-compounds (100 treadwear). Staggered on street tires tends to understeer.
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Old Jan 18, 2010 | 12:14 AM
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Originally Posted by 350Zdj
wait.. u mean to say you have this set up and yet the car is still throwing out its tail?

u got more negative angle upfront right?

im asking this cuz i had the same tyre setup and understeered like cr@p.
i even kept my front dampers to softer settings .


if u dont mind sharing your suspension setup.. that would be great
Sure, right now I'm using a single adjustable Stance coil over suspension.
I have the front's set near the softer setting, (5 clicks form the softest setting) and the rear is at full soft. Front camber is -2 rear is -3. Front toe is 0 and rear tow is 1/4 toe in.
Slow speed turn in is very neutral. Mid corner tends to lead to oversteer if I'm the gas to much. Corner exit can lead to oversteer if I'm to generous with the throttle, but it's very controllable. Mid speed turns are a bit of understeer if I'm on the gas to soon at mid corner. I can tap the brakes and fix the understeer if I need to, but most of the time I find myself fighting oversteer if I'm pushing the car. I really don't have a problem with understeer at all. High-speed turns is all on the gas and it's very natural. I get oversteer as I push the car to it's limits. My problem is more of a traction problem. I'm at the limit of traction and the rear end breaks loose. I need bigger tires, and/or smaller roll bar in the back. I think I'll try taking off the rear bar altogether and see how that works.
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Old Jan 18, 2010 | 12:18 AM
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Originally Posted by 350Zdj
i was on 220 treadwear. does this actually make a difference? (sorry track noob here lol)
It will make a difference if your driving on a track. The NT-01's will require a much different suspension and alignment set up then if you are using non R comp tires.
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Old Jan 19, 2010 | 09:07 AM
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thanks for the info guys!

and sorry for hijacking the thread.

im going to hit the circuit and autox track at the end of this month so i was just thinking about getting my alignment and suspensions setup properly.
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