Mind you...my RT blows, im working on it, but my et is what im worried about right now. I had very different setups on my car. I live in Arizona and i've heard it is a much bigger task to get into the 13's here, at least I've heard, if I just blow at driving and need tips, let me know. Last night was no exception.

I changed the spark plugs yesterday and saw some oil foulage, as well as some leakage, when I get into the shop on monday im gonna get the compression tester and see what is going on. My car seems to have just lost it's guts with more traction friendly modifications.

My old setup was. Kinetix SSV, RTP's,Headers,intake,stock sized all season toyo tires(225 front 235rear 30psi).(Tranny was grinding 3rd and 5th, with a slipping clutch, later found out the clutch was worn to its rivets...thanks previous owner.)

11/10/06
r/t: .605
I1: 2.200
I2: 6.102
I3: 9.242
MPH I3: 78.665
I4: 11.847
E/T: 14.195
MPH 99.497

New setup. Kinetix SSV, Headers, "removed RTP's during tranny replace", new tranny, JWT Clutch/Lightened Flywheel, BFG G Force TA KDW, 255Front, 275Rear(30psi)Volk GTS.

4/28/07

R/t: .273
I1: 2.259
I2: 6.209
I3: 9.422
MPH (I3): 77.377
I4: 12.097
E/t: 14.512
MPH: 96.123

It just seems like most of you glide into 13's so easily, it just seems like my car isn't kicking out the juice.

 

To follow up again, my old setup I consistently got 14.1 to 14.3.

My new setup I seem to be stuck in mid 14's. Frustrating.

Also the runs were at Speedworld Raceway park for any of you familiar, I hear the track prep isn't as good as it is at Firebird Raceway, but I run here because im trying to keep the track as a constant.

 

Conditions could have been worse. Oil on plugs is usually a bad valve cover gasket, get it checked out. Your first slip (old) seems right on for your location and avg driving. Im sure you know the launch could use some work. You shifting at redline?

 

Yep right at redline. The launch is something I was trying to work on, I don't get to go to the track too often, seems like the old approach was blipping it off idle and it always took me to low 14's.

The new tactic seems to be bring it up to around 3500 and come outta the hole hot while slipping it. The acceleration off the get go seems there, it just feels like it's running out of breath near the top of the gears, it was the same thing when I got the low 14's, just that the power loss seems more severe now.

 

Speedworld Raceway Park is 1470 feet above sea level. Give yourself a ET correction factor of 0.9835 or 14.272 seconds. The Z is picking up only 19 MPH in the last 660 feet. That's not good. And lets get those 60-foot times down to 2.0 seconds.

 

Workin on it davidv, but yeah it just seems guttless in high rpm territory now. I'm taking a compression tester to it tomorrow, and as alberto pointed out, the next step after I comp test it is to check the valve cover gaskets for the cause of the plug fouling, though im also seeing some oil seepage from the intake manifold that worries me as well. Test pipes are definately going back on, and I'm gonna head back fairly soon to work on the 60ft.

How does that ET correction factor work?

 

I agree. You run 11/2006, and pick-up 21 MPH in the last 660 feet.
Then run 04/2007, and only pick-up 19 MPH. Something is not right.

Here is a good elevation chart: http://www.wallaceracing.com/Calculators.htm

 

I don't like "correction" factors.

They only factor in the elevation of a track. This doesnt include headwind, track preperation and condtion, traction, etc.

It is better to judge your Z to other Z's in the same track; there has to be someone with a better time than every other Z in there.

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Unfortunately the other Z's ive seen run at speedworld are getting high 14's or as of last night a base model who's driver had their first time at the track getting 15.8's, and the last time before a 6mt G35 who was getting 15.00's before he broke into 14.8's near the end of the night.

Since AZ seems to be land of the dinosaur cars, I really don't see many VQ powered cars there at all, usually I'm on the only Z trying to drag. The rest of the cars are Evo/STI, S2k, Old American muscle cars, LS1 powered cars, or Mustangs

 

Well IMO I think it's your rear tires they are a bit heavier. I once lost 20rwhp (on the same dyno) when I was N/A from going from my stock 18 to Volk gt-c's with 275. That can easly do it. Like Ablerto also mentioned Conditions could be worse.

 

I guess I could have overkilled for my lack of traction before, though I thought the Volk GTS rims were supposed to be lighter, then again...they are 19's vs 17's, ultimately I always wanted to be more show then go....but they were so pretty......I was trying to setup for FI, I figured if I went FI I would need more traction, hence the larger rims to accomodate much larger tires then 235's...though I guess it could be counterproductive.

I guess the compression test and test pipe reinstall will help, I really appreciate looking my times over though guys thanks.

 

You forget one somewhat important factor: in November it's a rather cool night, whereas in April it gets much warmer here. I remember running much lower times at Speedworld with my old Tiburon in late fall and winter than spring and summer. Air temperature plays a big role in my opinion. I'm actually planning on taking my new Z up there sometime soon, just to see what I run.

 

Ya, I was wondering myself what the temp. diff. was between November and your latest run. You also said you had test pipes in November, but you no longer have them installed. That could very well be the loss you are showing in the top end.

 

To be honest the temps were a bit different. This years winter here didn't really seem to kick in till mid December though in which it felt colder then it has for many years. I wanted to run now since its not quite "summer" yet...I know that my times are going to be very bad when it starts sticking in the 100's at 1am again...

To be honest I just really thought with an actual clutch that doesn't slip, the lightened flywheel and the new meat in the rear that the car would have been able to stick at least to where it originally had been. Then again I do understand that I opened up the cars ability to breathe with mods, and then choked it again with the stock cats as well as the temperatures here increasing again.

I guess tomorrows compression test and checking out the plugs again will let me know as to the condition of everything, hopefully it is just a combination of a valve cover gasket and the test pipes being uninstalled.

 

Let me know when you plan on going, I may try to meet up with you so we can see what we can do...Definately not enough VQ's there and to date every time I go, i'm trying to get us some respect, I do get so tired of the usual "It's not for drag, it's for a course" comments as many of our more skilled members have proven over and over.

 

I'm kinda roughly planning on going Saturday the 12th. I definitely wouldn't mind meeting up, let me know if that night works for you.

 

Additional Information
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Just out of curiosity what do you drive?
ET?

 

Isn't the SSV bad for N/A performance?

 

I drive an 06 G 6MT. I don't think you really wan't to know my ET... put it this way; I have yet to get below a 2.3 60ft . I guess I need even more practice; I've been to the track about 3 to 4 times already.

.

 

To be honest it felt like it helped, dyno'd on the same dyno went from stock 233whp222wtq to 245whp 250wtq, it could be covered by the other mods I had but to date it felt like I gained.

Though I don't think it is the cause for my falling ET's, the old intake manifold is going back on soon, so maybe I will redyno with the test pipes back on to complete the same mods and see if it gains or not. Although it is still stainless steel it cools down much faster then the stock manifold did and the heat really kills our performance in AZ so who knows I guess we'll see .