Performance Numbers

Nismoracer

There are a lot of dyno figures with hp numbers and graphs and meters that show gains. But realistically does anyone have any numbers that show gain from like a track or something? With all the mods show a gain in 0-60 times, 1/4 mile times etc. The horsey numbers are cool but what how does it translate to the asphalt. Here's one that I have. 0-60 stock 5.9 secs added drop ins now 5.3 secs. Those aren't best times just average not hard launches either, just engaging the clutch and hittin the gas.

ImportConvert

What you seem to be talking about is 5-60. Stock, the 370Z is tested to do 5-60 in about 5.8-5.9 seconds.

All too often people get caught up in 0-60 and don't stop and realise that this is with a pro driver and a 3 or 4000rpm clutch drop, feathering the cluth/throttle.

You aren't likely to do this on the street nearly as often as a quick romp from the bottom of first.

When I wonder about a car's "real world" performance, I just google the C&D 5-60 test for that car. It's an eye-opener, and it seems to correlate VERY well to how the car feels on the street after you get past all the magazine-racer BS.

daisuke149

your claiming drops in gave you .6 seconds in the 0-60......

uhmm..

kenchan

ummm... you dont need drop-ins to do that. just wait until a cold day and you'll probably get the same 5.3 with the right launch using your stock box after driving like a maniac for 10min or so prior.

ChrisSlicks

Correct the HP numbers don't mean much, you're making peak HP for the blink of an eye in real driving. What does matter is the area under the curve for the RPM band that you plan on using. If you bolt something on that only increases power at 7000rpm and up sure it will show up on the dyno sheet as a power gain but it won't do much for you on the track.

I think it would be interesting to real world test the effect of each part individually but unfortunately given the wide variety of variables and changing conditions it isn't really possible or practical. So the best you can practically do is use a good load corrected dyno such as a Mustang or Dyno Dynamics and look at the power curve as a whole rather than just the peak number.

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halogodx

Well the number i can give u is my 1/4 mile.

I'm pure stock 09' 370z 7AT
1/4 mile: 13.35 sec @ 105.6 mph

kenchan

that's plenty fast.

Nismoracer

Yeah that's along the lines I was thinking about. And Yes I know with a better launch Bliss could be had. I engage the clutch and hit the gas and measure it that way because that is the only way I can consistently launch the same way. And yes according to my Gtech pro I went from 5.9 sec to 5.3 secs with the drop ins.

Nismoracer

Wouldn't it be faster with the roll out?

Nismoracer

Well on a cold day ( 40* )and with my best launch I managed a 4.9 sec 0 - 60mph. Which I can't repeat to save my life but was cool to have seen it.

ImportConvert

When 0-60 is measured with the 1' roll-out, it is usually .2-.3 faster than when they don't allow roll-out. That is why some magazine times are always "faster" than others.

Jordo!

Mean data on stock performance for 6MT and 7AT, based on info posted here.

7AT Faster 0-60 and 1/4 mile than 6 MT??

Individual results may vary

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Nismoracer

Yeah I've seen plenty of the magazine reviews and they all vary, not consistent at all. Motortrend has the fastest reviews on the Z. 0-60 like 4.7 sec everyone else has it 5.1, 5.2 etc. Was just curious how much of a gain ppl got with certain mods. Say someone put on test pipes or headers or anything. How much of a difference did they notice, how much did it improve 0-60 or 1/4 mile or roll on power etc. I was fortunate to run into a guy the other night who had put on HFC. We couldn't run em from a dead stop but rolling power in 2nd gear he slowly creeped ahead of me, once we went into 3rd we let off. That was the only mod he had done so far. He didn't even do drop ins.

ImportConvert

Motortrend didn't count the roll-out. The other mags did. You can fudge 0-60 numbers so much, but a 5-60 is what it is. That is why I pay attention to 5-60 to tell me 95% about how the car will feel from a redlight on the street.

That sounds about right for HFC's (15whp, give/take).