^ Unable to view that image Mike. Can you save and rehost?

Well...I did it, but I'm not sure it was worth it...:lol:

LMAO. Love it! :lol2: :lol2: :lol2:

^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.:Eyecrazy:

As you can tell, I happen to believe Colin Chapman was right, "Simplify and add lightness".

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?

Thanks for the 350 weight chart. Still looks like the race trim weight for the 370Z base + sport Package will be approx 3280 ( based on a 3373 curb).
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.

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.

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:

http://i32.photobucket.com/albums/d1...nerweights.jpg

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.

Also FWIW, several people have found the portable SCCA scales to read ~20lbs to high.

there's no reason to post cornerweights from an event since the scales aren't leveled on the same plane, only the total weight has any value

A base model with sport Package stock wheels with Hoosier A6's weighed 3230 on the Toledo Pro scales.

3230! thata's alot. Must be those A6's

Forgot to advise that the 3230 was less than our early estimate of 3280 for a 370Z in autoX trim. I have updated the chart.

dam thats pretty heavy

That's lighter than I thought...

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.

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

Good point Chris. Learic still has the stock exhaust installed on her yellow Z.

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.

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.

Is the differential any better in the 370z than in the 350z?


Everytime I see one, I have an urge to go buy one, but I need backseats!!!

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.

It's the same viscous "sludge" unit in the back. :suspect:

The wider wheel and shorter wheel base could change fuel load and other factors too.

Well I've sent both Learic and Piccione e-mails. I'll let you guys know what they say...

Piccione responded to my pm...

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.

Set-up could dial out some of that inside rear wheel spin. Get some custom moton shocks and run some good rebound in the rear, in combination with a stiff FSB and that problem could be greatly reduced.

FWIW, the car Piccione drove was on stock shocks with a big FSB.

I'm sure it could, but the comment you made that I was questioning was that wider rear tires would reduce wheelspin. That hasn't been my experience, although I'd be interested in hearing experiences to the contrary.

I gotcha. I would agree that wider, stickier tires *could* cause more wheelspin issues compared to the same car on less grippy rubber. I imagine the same could be said about a grippier surface compared to a less grippy surface.

The real question is, can a 370Z be set-up (within the confines of the stock class rules) to put the power at corner exit on concrete? Either way, looks like we'll all find out first-hand in the next 6-7 weeks... :rofl:

I still haven't heard back from Learic, but I'll talk to her this weekend. I did ask Piccione another question and got a response...

I heard back from Learic...

Do you talk to yourself when nobody else is around?

http://jcnot4me.com/images/pot_calls_kettle_black.bmp

See you in Lincoln jackass! :kiss:

sorry, forgot the "j/k" smilie :lol:

Looks like the Vail Tour BS class went from "possibly interesting" to "nobody's home"...:mdrmed:

I thought about hitting it on the way out to the Lincoln Divisional trip, but the bills are hitting for the knee surgery ...

Too bad...I liked your odds to take the win...:yelrotflm

JK, hope the knee is doing ok. :)

No worries. Give me some credit though...I try to at least steer my posts away from random, wild accusations made solely to "add to the chat"! :yelrotflm:yelrotflm:yelrotflm

:squint: :squint: :squint:


srsly, try harder ...:eyetwitch

Resurrection
 

Hehheh...I'm bringing this back from the dead. As an old RX-3 owner I'm interested in any feedback on the 370Z in Xcross, this was an entertaining thread, and if it is any indication of the Forum as a whole, it's an indicator of some quality members, so :beerchug:

It all depends on the course, the RX-8 might have an advantage, but probably not as big as you think. Still, isn't Solstice the car to beat at the nationals this year?

For the track, forget about the RX-8

^Nope..

Agreed. The MX-5 MS-R is definitely the car to have in CS.

So the Nissan is still crap on Xcross, then. It is heavy. It looks like the braking and overheating issues have been sorted out on the track, though. Nissan should have had an oil cooler on that thang from the start.

Yes the 350 and 370's are heavy....check the table at the start of this thread.The 350 and 370's are not crap at autoX....Nationals results next week will tell us much more cause there is a good 350/370 showing this year. With the right driver and right course the Nissan could do very very well next week.

It's course depended, I have owned, autox and tracked all 3 of the cars. The difference isn't as big as you think. I can tell you the RX-8 is the easiest but also least thrilling to drive.

^I disagree with pretty much everything this guy says...

That's fine. I still have owned all three cars and have driven enough to have an idea on each car's strengths and weakness.

Not thrilling to drive would not be considered a strength or weakness...That would be personal opinion.

I never said it was, they are just different. I still have owned and raced them all.

Just because you have owned them and raced them does not make the 350z faster than an RX8...The 350 might have suited your driving style better...maybe you can't keep the momentum up through the corners with the RX8..So you need the power of the Z to pull you out of corners...

Just a thought.