New BS pecking order?
#76
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More data for Jason to digest with the 370Z testing:
Our estimated weight calcs:
3225 Nissan listed curb weight 2005 Track
- 52 spare/tools/mats
- 35 muffler
- 28 285 710's vs OEM tires
- 31 3/4 tank fuel
+10 CT-1 frt sway bar
+ 7 muffler delete pipe
3096 Estimated race trim weight
3165 Actual race trim weight,HPT scales
We assumed from this that the 3225 curb was a bit on the low side.
For testing I would guess a full tank would be best to minimize rear wheel spin.WE always started runs with 7/8 to full tank.
Our estimated weight calcs:
3225 Nissan listed curb weight 2005 Track
- 52 spare/tools/mats
- 35 muffler
- 28 285 710's vs OEM tires
- 31 3/4 tank fuel
+10 CT-1 frt sway bar
+ 7 muffler delete pipe
3096 Estimated race trim weight
3165 Actual race trim weight,HPT scales
We assumed from this that the 3225 curb was a bit on the low side.
For testing I would guess a full tank would be best to minimize rear wheel spin.WE always started runs with 7/8 to full tank.
#77
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I agree....without some setup work and R tires the 370Z won't perform very well in autoX terms. Corner exit rear wheel spin should be the biggest problem...if not,this could be a very different Z. Anxious to hear the findings.
#79
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No one has put a 370 on scales yet,that we know of. Based on our '05 car my guess is you will find the 370 is closer to 3300 than 3200( curb).
If possible I would try 1/4 tank fuel or less first followed by full tank. If only one,I would test and weigh(for curb comparison) at full tank just to get a feel for level of rear wheel spin....again, only R tires + setup will provide what we really need to know.
If possible I would try 1/4 tank fuel or less first followed by full tank. If only one,I would test and weigh(for curb comparison) at full tank just to get a feel for level of rear wheel spin....again, only R tires + setup will provide what we really need to know.
#80
05-08 SCCA BS Natl Champ
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No one has put a 370 on scales yet,that we know of. Based on our '05 car my guess is you will find the 370 is closer to 3300 than 3200( curb).
If possible I would try 1/4 tank fuel or less first followed by full tank. If only one,I would test and weigh(for curb comparison) at full tank just to get a feel for level of rear wheel spin....again, only R tires + setup will provide what we really need to know.
If possible I would try 1/4 tank fuel or less first followed by full tank. If only one,I would test and weigh(for curb comparison) at full tank just to get a feel for level of rear wheel spin....again, only R tires + setup will provide what we really need to know.
#81
Row faster, I hear banjos
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My one reservation about the 370Z being in B-stock, even with the vlsd rear diff, is the fact that the sport package will come with 19x9 front and 19x10 rear wheels.
Per the Tirerack, Hoosier makes a 295/30ZR19 & 315/30ZR19 A6. The recommneded wheel width range for the 295 is 10" and up, and 11" and up for the 315. Hoosiers can be made to fit well on narrower than recommended wheels, and a 370Z on 295's front, 315's rear might not get the corner exit wheelspin we're anticipating. It does appear to come with even wider fenders than the 350Z that should accomodate these wide tires...
Per the Tirerack, Hoosier makes a 295/30ZR19 & 315/30ZR19 A6. The recommneded wheel width range for the 295 is 10" and up, and 11" and up for the 315. Hoosiers can be made to fit well on narrower than recommended wheels, and a 370Z on 295's front, 315's rear might not get the corner exit wheelspin we're anticipating. It does appear to come with even wider fenders than the 350Z that should accomodate these wide tires...
#82
05-08 SCCA BS Natl Champ
iTrader: (1)
My one reservation about the 370Z being in B-stock, even with the vlsd rear diff, is the fact that the sport package will come with 19x9 front and 19x10 rear wheels.
Per the Tirerack, Hoosier makes a 295/30ZR19 & 315/30ZR19 A6. The recommneded wheel width range for the 295 is 10" and up, and 11" and up for the 315. Hoosiers can be made to fit well on narrower than recommended wheels, and a 370Z on 295's front, 315's rear might not get the corner exit wheelspin we're anticipating. It does appear to come with even wider fenders than the 350Z that should accomodate these wide tires...
Per the Tirerack, Hoosier makes a 295/30ZR19 & 315/30ZR19 A6. The recommneded wheel width range for the 295 is 10" and up, and 11" and up for the 315. Hoosiers can be made to fit well on narrower than recommended wheels, and a 370Z on 295's front, 315's rear might not get the corner exit wheelspin we're anticipating. It does appear to come with even wider fenders than the 350Z that should accomodate these wide tires...
![Lol2](https://www.rx8club.com/images/smilies/lol2.gif)
I would feel much better about the low end 370, base with sport, being in BS than a $$$$ limited Nismo 350.
#84
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My setup:
Enkei RPF wheels, 285 Kuhmo's, Koni Yellows, Aftermarket Exhaust (20lbs lighter), no spare, CT-1 front sway bar, full tank.
Hope this helps,
JR
#85
05-08 SCCA BS Natl Champ
iTrader: (1)
Yes they are.... Has the late 350Z with big tires shown to be better than the 05' Track - I don't think so. So even if the 370 is better than the REV-up (or what ever they call the 07-08) it may not be better than a 05'.
I think one very important stat, particularly to solo, you are overlooking is width. The 370s body is 1.1" wider and rear track is 2.2" wider than the 08', it is a fat car.
btw a C5 Z06 rear track, 62.1", 370 62.8".
I think one very important stat, particularly to solo, you are overlooking is width. The 370s body is 1.1" wider and rear track is 2.2" wider than the 08', it is a fat car.
btw a C5 Z06 rear track, 62.1", 370 62.8".
#87
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3038 1/4 tank, '03 Enthusiast, Thompson, Petersburg Pro scales
3151 ? , '03 Track, Piccone, HPT scales
3165 3/4 tank, '05 Track,Thompson, HPT
3204 1/2 tank, '05 Track, Austin,HPT
3290 ? , '07 Enthusiast,Cavanaugh,HPT
3201 Full tank, '07 Track,Ruggles,HPT
No 2008 data
#89
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#90
05-08 SCCA BS Natl Champ
iTrader: (1)
2009 base weight:
Per the B Stock 350Z drivers instructions, 3/4 tank of fuel, no spare, jack or tools.
3246lbs
56% front
LF 886 RF 939
LR 737 RR 685
I did not level the scales, since it was not a Sport I was not going to waste a lot of time on it.
Weight with spare/tools/jack 3289.
Hard to say for sure the weight difference between the base with small wheels/tires and a Sport outfitted with fat Rs.
Front camber, LF -.7, RF -.9.
If it does not start to rain we are going to do some acceleration test, 20-60mph, should give us some idea of how it will pull out of a turn. 0-60 and 60-0 will be worthless with the small tires and no LSD, so we will skip that.![Icon No2](https://www.rx8club.com/images/smilies/icon_no2.gif)
Per the B Stock 350Z drivers instructions, 3/4 tank of fuel, no spare, jack or tools.
3246lbs
56% front
LF 886 RF 939
LR 737 RR 685
I did not level the scales, since it was not a Sport I was not going to waste a lot of time on it.
Weight with spare/tools/jack 3289.
Hard to say for sure the weight difference between the base with small wheels/tires and a Sport outfitted with fat Rs.
Front camber, LF -.7, RF -.9.
![Icon No2](https://www.rx8club.com/images/smilies/icon_no2.gif)
If it does not start to rain we are going to do some acceleration test, 20-60mph, should give us some idea of how it will pull out of a turn. 0-60 and 60-0 will be worthless with the small tires and no LSD, so we will skip that.
![Icon No2](https://www.rx8club.com/images/smilies/icon_no2.gif)
![](http://myscca.com/photo/250/2008/11/25/6618f765a411db794714b7fe2917_4.jpg)
Last edited by ULLLOSE; 11-25-2008 at 08:07 PM.
#94
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Looks like another 3200 lb Z in race trim.The front camber is typical of all Z's so far,all should be less than 1 degree.
If it's a better autoX performer than it's brethren looks like it will be the result of wider rims and more power.
If it's a better autoX performer than it's brethren looks like it will be the result of wider rims and more power.
#96
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You've got it backwards. Fatter tires means more grip which means more body roll which means more inside wheel lift which means more wheelspin, not less.
#98
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Forgot about the shorter wheelbase....could help the car rotate and make it fast. The 370's 100 HP advantage over the RX8 is a nice starting point.
#100
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No no no........we are very happy with the 8. It took us almost 2 years to sort out our '05Z .So if there is a better BS car than the RX8 someone else will have to prove it.But like I said, a 100 HP advantage is a good start.