RX8 vs 350Z vs 370Z
12-07-2008, 12:12 AM
#54
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^Well, even Nissan should admit that 3400lbs for a two seat "sports car" is pretty dang porky...I understand the weight penalty commonly attributed to safety regs, but the rest of it is just hanging a bunch of crap on the car, because the "market demands it". There's no reason they can't make a car of that physical size less massive.
As you can tell, I happen to believe Colin Chapman was right, "Simplify and add lightness".
As you can tell, I happen to believe Colin Chapman was right, "Simplify and add lightness".
12-07-2008, 12:52 AM
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http://350z-tech.com/zwiki/Weight_Reduction_Guide
SO, now you've cut 3-4 inches out of the chassis, changed the doors hood and hatch to aluminum, trimmed the length, but you've added a bit more to the interior on the 370. Going off those numbers on 350z-tech on top of what Nissan has done of what I mentioned above...Does 34-3500 still sound realistic?
SO, now you've cut 3-4 inches out of the chassis, changed the doors hood and hatch to aluminum, trimmed the length, but you've added a bit more to the interior on the 370. Going off those numbers on 350z-tech on top of what Nissan has done of what I mentioned above...Does 34-3500 still sound realistic?
12-07-2008, 10:48 AM
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http://350z-tech.com/zwiki/Weight_Reduction_Guide
SO, now you've cut 3-4 inches out of the chassis, changed the doors hood and hatch to aluminum, trimmed the length, but you've added a bit more to the interior on the 370. Going off those numbers on 350z-tech on top of what Nissan has done of what I mentioned above...Does 34-3500 still sound realistic?
SO, now you've cut 3-4 inches out of the chassis, changed the doors hood and hatch to aluminum, trimmed the length, but you've added a bit more to the interior on the 370. Going off those numbers on 350z-tech on top of what Nissan has done of what I mentioned above...Does 34-3500 still sound realistic?
Keep in mind our chart is only interested in the best autoX model=base+sport for Bstock competition and the only legal items that can be removed for weight reduction are tools/spare/mats/muffler.If the 3280 becomes fact the 370 will be 480 lbs heaver than the 04RX8.
12-10-2008, 07:14 PM
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Not that it makes a big difference, but IIRC, the way HP is measured changed in 05. So the gap between the 05's "300" and the 08's "306" is bigger than just 6 HP.
Also, most of the 05 motors were the 287HP "DE" motor. The 05 track / 35th anv. / 06 300hp motor is kind of rare. Nissan had some problems with that motor, (AKA the "RevUp" motor) and went to the 306HP ("HR") motor for 07+.
Most Z's with no "bump" in the hood are running the 287HP "DE" motor. And that was rated before the ASE standards tightened up.
Also, most of the 05 motors were the 287HP "DE" motor. The 05 track / 35th anv. / 06 300hp motor is kind of rare. Nissan had some problems with that motor, (AKA the "RevUp" motor) and went to the 306HP ("HR") motor for 07+.
Most Z's with no "bump" in the hood are running the 287HP "DE" motor. And that was rated before the ASE standards tightened up.
Last edited by Z1NONLY; 12-10-2008 at 07:17 PM.
03-16-2009, 09:43 AM
#58
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Jim,
As promised I corner-weighed my car at the Dixie NT. The ground appeared to be reasonably level, so the numbers should give us a fair estimate. One disclaimer: At the time I weighed it, the car had just over an additional 3 gallons of fuel in it (than I normally run) as I wanted to be sure there would be more enough gas as I had an extra co-driver in BSL.
Took a pic with my cell phone camera and it's shown below:
The numbers might be a little hard to make out, but they are:
LF: 754lbs RF: 804lbs
LR: 667lbs RR: 647lbs
Total weight: 2872lbs
This puts the front-to-rear weight distibution at: 54.2%/45.8%. If I had run my usual 2-driver autocross fuel load (3 gallons = ~20lbs), the front/rear weight distribution would have been even worse.
As promised I corner-weighed my car at the Dixie NT. The ground appeared to be reasonably level, so the numbers should give us a fair estimate. One disclaimer: At the time I weighed it, the car had just over an additional 3 gallons of fuel in it (than I normally run) as I wanted to be sure there would be more enough gas as I had an extra co-driver in BSL.
Took a pic with my cell phone camera and it's shown below:
The numbers might be a little hard to make out, but they are:
LF: 754lbs RF: 804lbs
LR: 667lbs RR: 647lbs
Total weight: 2872lbs
This puts the front-to-rear weight distibution at: 54.2%/45.8%. If I had run my usual 2-driver autocross fuel load (3 gallons = ~20lbs), the front/rear weight distribution would have been even worse.
Last edited by chiketkd; 03-16-2009 at 11:44 AM.
07-27-2009, 08:37 PM
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Any idea of fuel load Jim? Learic runs in the DC region and her car is still on stock shocks. With motons, some lightweight Forgeline wheels, and playing around with fuel load a bit, could possibly drop another 50 lbs...maybe more.
07-28-2009, 06:23 AM
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Chike -
I overheard Mark (370z driver) say he got fuel starve on his last run, not sure what that translated to on the gauge. Also, I believe the car still has stock exhaust.
40-50 lbs seems about right for additional weight reduction considering the fuel load was optimized.
Chris H
I overheard Mark (370z driver) say he got fuel starve on his last run, not sure what that translated to on the gauge. Also, I believe the car still has stock exhaust.
40-50 lbs seems about right for additional weight reduction considering the fuel load was optimized.
Chris H
Last edited by Zoom4Three; 07-28-2009 at 07:06 AM.
07-28-2009, 08:55 AM
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Chike -
I overheard Mark (370z driver) say he got fuel starve on his last run, not sure what that translated to on the gauge. Also, I believe the car still has stock exhaust.
40-50 lbs seems about right for additional weight reduction considering the fuel load was optimized.
Chris H
I overheard Mark (370z driver) say he got fuel starve on his last run, not sure what that translated to on the gauge. Also, I believe the car still has stock exhaust.
40-50 lbs seems about right for additional weight reduction considering the fuel load was optimized.
Chris H
I'll talk to Learic this weekend and find out what her fuel load was at Toledo so Jim can add it to the data.
07-28-2009, 09:28 AM
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Most 350's found that a 3/4 to full fuel load was best to avoid rear wheel spin and help with f/r weight balance. Removing muffler may require more fuel if the 370 is same as the 350's. Would be good to know the 370's preferred fuel load.
07-28-2009, 09:44 AM
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Piccione drove Learic's car at an AI event not too long ago (and previously ran Boston's '03 350Z nationally), I'll get his opinion on wheelspin in the 370Z.
07-28-2009, 10:20 AM
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From my understanding Jim, the rear wheel spin that plagued *most* 350Z models is greatly reduced by the wide rubber that can be run in the rear of the 370Z (similar width wheels to the 350Z Nismo). Now what that translates to in terms of optimum fuel load...I don't know.
Piccione drove Learic's car at an AI event not too long ago (and previously ran Boston's '03 350Z nationally), I'll get his opinion on wheelspin in the 370Z.
Piccione drove Learic's car at an AI event not too long ago (and previously ran Boston's '03 350Z nationally), I'll get his opinion on wheelspin in the 370Z.
07-28-2009, 05:13 PM
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Originally Posted by chiketkd
Hey Lee,
At the last DC event you mentioned that you had driven Learic's 370Z. Compared to Boston's '03 350Z that you drove for a season, how well did Learic's 370Z put the power down at corner exit? Did you notice any excessive wheelspin on course? (i.e. did it drive like it had a viscous lsd)
At the last DC event you mentioned that you had driven Learic's 370Z. Compared to Boston's '03 350Z that you drove for a season, how well did Learic's 370Z put the power down at corner exit? Did you notice any excessive wheelspin on course? (i.e. did it drive like it had a viscous lsd)
Originally Posted by leepic
The 370 is way better than the 350. Much less push, fantastic brakes, and significantly less wheel spin. If you really load up the left side of the car in a high grip right hander you'll spin the tire like the 350, but most other places it's less. It'll be a player in BS for sure...
07-28-2009, 08:12 PM
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Are you sure? More grip means more body roll means picking the inside rear wheel further off of the ground, which generally translates into more wheelspin, not less.