Let me start by saying that Gtech run trap speeds are high because it measures the instantaneous speed at the end of the 1/4 mile. At a strip, the trap speed is the average speed over the last 50 ft.

I also think I now know why the magazines get slow 0-60 times yet high trap speeds. The Z doesn't squat at all!!! Seems like there is very little weight transfer to help with traction off the line. On my first run I got way too much wheelspin and on my 2nd run going in the opposite direction I got a ton of axle hop off the line. The shift light really helps though, but don't hit the rev limiter because it feels like you hit the brakes!! I hit the rev limiter when I did a couple of 0-60's after the two 1/4 mile runs.

The car had an 8th of a tank of fuel. It was 67 degrees according to the trip meter. This was maybe 20 ft above sea level. The spare and tools were in place and I weigh about 230lbs. The road ends about 100 yds from the ocean and it runs between to farms so it's very dusty/dirty with less than optimal traction. Car has 700 miles on it.

Anyway, enough talking. Here are the results:

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1st run: Lots of wheelspin off the line

13.84@106.9mph

2nd run: Lots of wheel hop off the line

13.71@107.8mph

0-60 Only putting one because I hit the rev limiter on the 1st one

5.36 sec

Well, there you have it. Next time I am going to remove the spare and tools. I am also going to try dropping the rear tire pressure to about 32lbs. It will be interesting to see what this car really does at a drag strip with a lighter driver than myself.

Hope you liked.

 

Thanks for the results! You did even better than the car mags were able to -- good work!

 

good stuff man. im a firm believer in weight reduction and thats the type of times i would expect from the Z. low 13s should be easy comming with the spare removed.
peace

 

Just another in a long line of informative and damn fine posts! Your an asset to this site. Many thanks!!

Ok, how fun was it to run the car like you did?

 

Raceboy, could you please tell us how you drove the car as far as shifting at what RPM, those are some really impressive numbers. Did you take it all the way to redline or just to the RPM which makes max power, 6200 I believe? Also what RPM did you drop the clutch at, if you dropped the clutcha t all? Thanks.

 

I shifted at redline. First run I revved up to about 3K and just dropped the clutch. Result: tons of wheelspin and the back end stepping out a bit to the left. Second run, rev to 2500, drop the clutch. Result: tons of axle or wheel "hop."

As far as how it was to drive it like that?? I'd be telling a lie if I said it wasn't fun! I am not much of a drag racer. I didn't get my nickname from running in a straight line, but I love testing crap like this. It also gives you a nice baseline for your mods to see if you really are getting any improvement.

That is the nice thing about a gtech. Even if it isn't 100% accurate, it is extremely consistant. It's a fantastic way to see if the HP mods you are making are really doing anything at all. Much better than the "butt" dyno.

 

here kitty kityy. Heeeeeeeereeee kitty kitty.

 

Just put some hot sauce on it!!!! Hell, everytime you eat at a Chinese restaurant you are probably eating some kitty! See here: http://www.newgrounds.com/portal/chinese/

 

Very nice times!!! I will definately buy a g-tech when i get my z.
I have used them before, but always had to borrow it from a buddy. They sure are fun though. the last time I used it was on my dakota (R.I.P). It had 4.7L 5spd with just a custom made CAI and lakewood slappers and it pulled a 15.0, not bad for a 4000 lb truck

 

Redline is at 6600, but what rpm is the engine cut at?
Also, does the engine actually pull hard all the way to 6600?
Your posts are always helpfull and appreciated.

 

The results dont sound right to me. I think you ahve the wrong weight in there. I havea g-tech and have had problems with it - inconsistent readings, 3 second 1/4 mile times...crazy rpm readings when the car is stopped... I've calibrated the device numerous times, thinking that may be the problem. Its kind of a hunk of crap.

I bought the apexi RSM with the g-meter addon. This is harder to wire, so when my Z gets here, I am going to try it. I tink it will be a lot more accurate since it grabs teh rev right off of the ecu, not the cars electrical system which I am sure introduces noise..

Anyway, my experience with the g-tech is pretty sour. Anyone else have problems with it?

 

Well done dragboy! Hum, that nickname isn't as good. It could mean other things! LOL

How does the G-Tech know the exact instantaneous speed? I would think with the accelerometers it would be better at an average.

SCC's dyno was saying the HP & torque dropped off at 5800 RPM. You should try short shifting it a bit and see if the numbers change any.

You,ve made me very happy! 5.3 & 13.7 are the exact numbers I was dreaming about before the specs were released. (Same as stock R34 GTR) Nice!

 

From http://www.sportcompactcarweb.com/fe...cc_350znissan/

(Great review!)

(I'm going to try to embed an image, I've never tried this before; if nothing else I'll attach it also.)

There seems to be a torque dropoff and horsepower dip around 5000 RPM and horsepower severely drops off around 6200. This is just stats from one mag's tests, though. Raceboy, can you give us any feel for whether your experience matches this graph?


[IMG]C:\My Documents\My Pictures\0210scc_350znissan09_zoom.jpg[/IMG]

 

I need to find out how to embed an image in a post!

(see attachment)

 

What was the air temp? Can't wait to get my base model no 18" wheels, heavy brembo brakes, or extra accesory weight to hold me back or the slushy visous coupling!

 

Entered vehicle weight does not come in to play with the G-tech for 0-60 times, 1/4 mile times or trap speeds. Only deals with calculating the horsepower. The only thing that could cause these results to bee too good would be if the road was slightly downhill. If the road was level, those look like good pretty good times.

 

Thanks Mcdan, you are absolutely correct. The runs were done back to back in opposite directions. Air temp 67 degrees.

 

1/4 mile times look pretty good, but the trap speeds are way off. At the track they will be a lot slower.

 

I have already said this. A bunch of question that were asked later on in the thread were answered in the firt post. Read a little bit folks.