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Nissan 350z - aug. 23 2010 - v0.5

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Post  theSnail .@y Sun Oct 25, 2009 11:17 am

Hello everybody - tout le monde Very Happy

As you've seen in the GT4 specs thread, c14 and I built a GT4 Nissan 350z.
I think it's better to keep the GT4 specs thread for specs and regulations and have a separate thread for the car …

v0.3 has the same engine as v0.1, different suspensions, different swaybars. So the car is less oversteering and more stable as long as you don't floor it in bumps and turns Evil or Very Mad

v0.5 has a less powerful engine, higher front air resistance, slightly stronger suspensions and narrower tires. So, its handling is less easy and its speed now compares with the other GT4s (see the GT4 Specs thread …).

Comments are welcome.

Update : v0.5
Please download here


Last edited by theSnail .@y on Mon Aug 23, 2010 4:48 pm; edited 4 times in total
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Post  A-rod Sun Oct 25, 2009 5:52 pm

Very nice work on the GT4! Smile

...problem is, the regular 350Z crashes for me. scratch
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Post  Tomte Sun Oct 25, 2009 6:01 pm

The included stock version crashes Redline because it references to a non-existent body model (Nissan350zBodyNoWingStock.mdl).

About the engine, you already seem to have some doubts about them...
Brook's .car editor says that the Nissan GT4 engine puts out more than the quoted 385 hp (you might have already checked the power curve). While I don't doubt the 385 hp from a 3.5l engine, 422 Nm are kinda high.
The power curve and the usual formulas show that already at max torque rpm (6500 rpm), the engine develops 385 hp (which it should only do at 8500 rpm).
If that engine where to produce 420 Nm out of 3.5l, then it would need to run a similar compression ratio as an TCC, F3, or F1 engine, but GT4 engines are not that highly tuned.
So your source says the engine produces 43 mkg at 6500 rpm... well, I don't believe it Twisted Evil . The rpm seem right given that the max power arrives at 8500 rpm. I think that 370-380 Nm are much more realistic.
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Post  theSnail .@y Sun Oct 25, 2009 6:23 pm

Huh - did I include the stock 350z already ?
It's impossible to live in the future Laughing

Well - that's a bug - I forgot to delete the stock .car. Silly me.
I'll make another one and go back to my previous engine settings, which seemed more accurate.

Done - see 1st post to get v0.3.
Sorry for the inconvenience.
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Post  A-rod Mon Oct 26, 2009 7:39 am

theSnail .@y wrote:
Done - see 1st post to get v0.3.
Sorry for the inconvenience.

Thanks. Wink

I like the GT4--it's a great looking car (although those wheels look more ricer-ish than racer-ish Wink )

I sincerely hope you'll include some sort of radical rear wing, if only for appearance reasons. Wink

As for driving impressions, the car feels, IMO, a lot heavier than it is. There's a lot of understeer going into turns, but then if you try to shift direction immediately after, the car gets real loose, as if inertia is off or CoG is too high?

I dunno...it also just feels less responsive than I think a GT4 should be--more like a solid axle muscle car, perhaps? Wink
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Post  Tomte Mon Oct 26, 2009 8:52 am

A-rod wrote:I sincerely hope you'll include some sort of radical rear wing, if only for appearance reasons. Wink
I guess you know my opinion about that.

Intertia and CoG seem to be correct from what I can see in the 350Z's .car. Perhaps lowering the differential lock a tad might help here.

The handling should stay somewhat close to the road cars, the GT4 will be the worst handling of all race cars we have. TCC cars should be able to get very similar lap times with higher cornering speeds compared to GT4 cars. I must say that the GT4 cars in general turned out to be less understeering that I thought they would be, but sure enough, they will understeer.
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Post  theSnail .@y Mon Oct 26, 2009 3:09 pm

Thanks for the comments.

A-rod wrote:
I like the GT4--it's a great looking car (although those wheels look more ricer-ish than racer-ish Wink )
Hehe, the wheels are not the right ones. c14 delivered beautifull wheels I'm having problems with. We're working on this …

A-rod wrote:
I sincerely hope you'll include some sort of radical rear wing, if only for appearance reasons. Wink
Nope, this should be the road version and it will stay like that in its GT4 version.
To tell you the truth, c14 sent me a winged version. So there might be a winged 350z in the future, along with a stock version.

A-rod wrote:
As for driving impressions, the car feels, IMO, a lot heavier than it is. There's a lot of understeer going into turns, but then if you try to shift direction immediately after, the car gets real loose, as if inertia is off or CoG is too high?
I dunno...it also just feels less responsive than I think a GT4 should be--more like a solid axle muscle car, perhaps? Wink
Road cars don't turn well at high speeds. A GT4 is just that after all … Wink
Try a bit of full throttle while turning. It might help in some situations … if you don't loose control Laughing
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Post  Tomte Mon Oct 26, 2009 6:28 pm

theSnail .@y wrote:
Road cars don't turn well at high speeds. A GT4 is just that after all … Wink
Try a bit of full throttle while turning. It might help in some situations … if you don't loose control Laughing
That's the right attitude: there is nothing wrong with the car, you just need to adapt your driving style Very Happy
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Post  djpimley Mon Oct 26, 2009 6:41 pm

Tomte wrote:That's the right attitude: there is nothing wrong with the car, you just need to adapt your driving style Very Happy
AC Cobra style! "Aerodynamics, downforce? Yeah, we've heard of them. Shut up and drive like you're enjoying it."
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Post  NoNameBrand Mon Oct 26, 2009 11:06 pm

The real thing is not a perfectly balanced car. It understeers. IIRC, Top Gear described it as a muscle car.

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Post  theSnail .@y Tue Oct 27, 2009 7:07 pm

A-rod wrote:
As for driving impressions ...it also just feels ... like a solid axle muscle car
NoNameBrand wrote:The real thing is not a perfectly balanced car. It understeers. IIRC, Top Gear described it as a muscle car.
Tomte wrote:... there is nothing wrong with the car, ...
Hehe that's what I call a consensus Arrow
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Post  theSnail .@y Mon Aug 23, 2010 4:48 pm

Updated to v0.5 - see 1st post for the link.
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