QUIKAG

[QUOTE=steven975,Aug 24 2006, 07:06 PM] I thought the GXP is boosted to, what, 18PSI?

Do you think a little turbo like that can even put out the 25PSI you would almost certainly need to pick up 75HP?

rockville

From what I recall reading in I think HotRod they went up to 350hp on stock Ecotec internals. I don't recall which displacement they used and of course that is not a trivial bit of information.

I also recall reading that GM applied a torque limit to the GXP motor. The motor was designed to limit not to a particular boost pressure but to a torque value. I suspect some part of the driveline would become torque limited. Perhaps the gearbox? I assume this is the same basic box (with some changed ratios) that the H3 and Colorado use. However, I don't think either of them has as much torque. Just speculation.

nalVle

the turbo is pushing 20psi to get 260bhp - the same thing goes for the evo, it uses a very high psi stock so really once the bolt ons (TBE, intake, chip, FMIC) are done, the only bottleneck is the turbo. i believe this car should see 300whp with the mods i listed minus the turbo. with 300whp and weighing about 100lbs less, this will be a nice STi/Evo killer. upgrade the turbo and this car could possibly see low 12s (like bolt-on turbo Evos/STi's).
-Chris

steven975

my road and track came in today and they tested the GXP against the 350Z vert and Z4 3.0si.

They crowned solstice champ, but said they would not have if it didn't look so good as it had a lot of flaws. By the way, they got 5.5 to 60 and 14.1 @ 98.7. So, I guess all the speculation that this car would stomp a mudhole in the S2000 was just that. The mag tests for the S are almost all 0.2sec and 2mph better. Also, the GXP is also most likely a MUCH easier car to get top times out of, where as the S needs some finesse. I would imagine that is going to mean pretty consistent results from the other rags.

test weight was also over 3000 pounds, so the HP/lb ratio for the S2000 is better.

03exlcoupe

don't be surprised if you see other mags record much faster times in 1/4mile, road and track could not even run a new Z06 in the 11's @120+. stock for stock it will be a drivers race with the s2k, win going to the turbo because it is easier to drive fast. modded its all over for s2k.

c

waltk88

Weird thing is that R&T has the best numbers for the Ferrari F430 (11.9 @123.3). Their numbers for the S2000 are also decent - 13.9 @100.2. It shouldn't be said that R&T is consistently slow.

YBS1

They got those numbers from the F430 because their test example was using comp-r tires and if I recall correctly it was a european model with launch control. They almost always do in fact turn in the slowest time of all the major publications. That being said if the numbers they got from the GXP are as usual, slower than what other publications will turn, it would still most likely put the GXP right at and no better than the best numbers the S2000 has provided.

Chris Stack

Here's C/D's data points:


Whole review is here: http://www.solsticeforum.com/forum/s...ad.php?t=21554

rockville

Well I had speculated that the base car would get the changed ratio (I also had suggested a few reasons why it might not). According to C&D it did.

waltk88

So is it correct to assume that a European spec F430 with P-Zero Corsa tires will outaccelerate a stock Z06? Seems that way as the road test was done with the same test team under the same conditions.