TravisJB Journal

travisjb

Photo time!!

Prep.... switching from Hoosiers to NT01s


ready to roll...


rolling!...




hold on, 10 degree bank!...


breath...


get on it!... who needs 4 wheels






... Life is good, gentlemen!

If anyone has a fav, I'll use it for my avatar

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2009 370Z #104
*For Sale*

travisjb

Almost forgot!!! Lambo for lunch

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2009 370Z #104
*For Sale*

travisjb

Two more notes to end my weekend...

1. HUGE thanks to SUPERIOR RACING DEVELOPMENT (SRD) of Tempe for prepping the car... it was in great form

2. the new rear diff cooler is set to kick in at 185F... every time out, it only took 1 lap at 9/10ths to trip the pump... this upgrade was definitely worth it to me - I can only imagine what kind of temps I was hitting before

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2009 370Z #104
*For Sale*

christian370z

Awesome pictures Travis, you definately run that Z hard. I have to admit, the black roof really looks sublime. I wasn't sure how it would work but between the black rims and spoiler, it looks very tied together. Keep up the good work!

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-320whp / 259wftlbs-
SP Rays -- RE-11s -- SpecialtyZ Tune -- Swift Springs -- Stillen 25R Oil Cooler -- Stillen G3 Intakes -- Berk HFCs -- F.I. 12" CBE -- Stillen Sway Bars -- Es14 Spring -- INGS+1 lip -- CF Spoiler -- GTR Start Button -- VLED Parking Lights -- PWJDM V2 shift knob

ChrisSlicks

Looks like a fantastic track, and the car is looking awesome! Glad to hear it was a success.

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Hotchkis ARB | Stillen CAI | Art Pipes | Berk CBE | Stillen AP Racing Brakes | AE Performance Oil Cooler | BC Racing ER Coilovers | Doran Control Arms

ChrisSlicks

Question, these are the 18" Forgestars correct? Ever had the brake caliper touch the wheel (barrel not spokes) during hard cornering?

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Hotchkis ARB | Stillen CAI | Art Pipes | Berk CBE | Stillen AP Racing Brakes | AE Performance Oil Cooler | BC Racing ER Coilovers | Doran Control Arms

travisjb

I did have some scoring on the barrel once during an event a few months ago... but that was when I was using the stock studs and lugs... when it happened, I noticed that the wheel was ever so slightly ****-eyed and not perfectly flush... now that I've switched to nismo long studs and muteki lugs, I don't seem to have any issues

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2009 370Z #104
*For Sale*

ChrisSlicks

I do have the Muteki open lugs and I have the H&R extended studs. Do you think the Nismo studs are stronger than the H&R? Or could the cheap plastic centering ring Forgestar supplied be part of the problem?

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Hotchkis ARB | Stillen CAI | Art Pipes | Berk CBE | Stillen AP Racing Brakes | AE Performance Oil Cooler | BC Racing ER Coilovers | Doran Control Arms

Mr&Mrs

Finally had time to finish this thread. I have alot of catching up to do on this forum. Thanks for all your R&D I have learned alot from this. Car looks great btw!

m4a1mustang

Sweet shots, Travis!

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- Steve

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FuszNissan

The wheels look so good on that color.

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Mods: Too Many to list!
LouFuszNissan
ZDAYZ 2012

travisjb

I am seriously contemplating the motordyne engineering intake manifold. The initial data seems to indicate good 4-6k rpm gains and not a big peak hp gain which is great for racing / classing. More to come...

Following up on the last discussion... There is zero scoring on my new wheels. So far looks like the brakes clear just fine

Also pleased to report that the brake cooling setup seems to be working well.

And thanks for the kind words on wheels, paint etc! Need to recognize chris soehren of elite auto paint of mesa for doing a world class job!

EDIT... couple more updates...

I lost 1.3 seconds at PIR today... makes sense, I have now +200 pounds ballast (3350 comp weight), stock sway bars, a cracked exhaust, 315 down to 275 rear tires, and am using nittos instead of hoosiers... could have been a lot worse I guess! I was second in class behind an older 911 race car that ran a half second faster. I miss my stillen sway bars the most! Even with 18k/16k springs, the car rolls heavily with the stock sways

Also for those that are doing NASA TT / PT, I have an email into the national classing director about resetting the base class with weight / power... that should establish a min comp weight for a given class at a given WHP... I am targeting TTA base with 320whp dynojet which will allow me to hopefully add back the stickier tires and sways and remove ballast. If I can pull it off, I think I can get 1.5 seconds off

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2009 370Z #104
*For Sale*

ChrisSlicks

Does NASA use a point system for mods? Would be nice if you could get the sticky tires back, those alone are worth 1-2 seconds over Nittos on a longer course.

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Hotchkis ARB | Stillen CAI | Art Pipes | Berk CBE | Stillen AP Racing Brakes | AE Performance Oil Cooler | BC Racing ER Coilovers | Doran Control Arms

travisjb

This may be TMI, but here goes. There are two core systems for determining class in NASA time trial. NASA Time Trial There is a points system for TTF through TTA... and then the three fastest classes (TTS/TTR/TTU) are based upon weight/power ratios with a few modifiers for super light weight or heavy cars and tires. I was previously in TTS but didn't have nearly enough power to justify the class, and now targeting TTA... The way it works in TTF-TTA is that you have a base class (370z is TTB*) which determines your starting point.... then you have a certain amount of 'points' you can spend before you go up each class. With a TTB* starting point, I have 32 points I can spend. The bonehead that set the base class decided our car belongs in the same base class as a 996 C2! Among all the cars in the TTB* base class, ours is at the bottom in terms of weight / power. THERE IS A BACK-DOOR, however. You can request that your base class be recalculated based strictly upon weight / power. That's what I was referring to above. I asked NASA to tell me what my minimum competition weight would be given a WHP of 320 and base class of TTA. Let's say they come back with "3,150 pounds"... that would mean that I would not take points for any engine or weight reduction mods so long as I stick to that power and weight. I would have 19 points to spend after that.

Here's my current breakdown of points at 3280 pounds min comp weight and using TTB* starting class.. you can spend up to 39 pts and still only go up 1 class...
B* +7
Nitto 275's +8
Weight Redux 20 lbs +1
CAI +1
Exhaust +5
SRM +3
LSD +3
Brakes +2
Shocks/Springs +5
Wing +4
TOTAL = 39, so class = TTA

And if I had TTA starting with 3150 pounds min comp weight and TTA starting class, using Nittos
Nitto 275's +3 (TTA std size is 295 so get bonus there)
LSD +3
Brakes +2
Shocks/Springs +5
Sway bars +2
Wing +4
TOTAL = 19, so class = TTA (can add no more than 19 to stay in class)

The benefit would be that I could continue to make engine mods so long as I stay under 320whp and also drop ~150 pounds. Would also add back sways.

Alternatively, could forgo wing and sways and spend those 6 points on tires... could run 285 Hoosier R6's for example

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2009 370Z #104
*For Sale*

ChrisSlicks

Thanks for the explanation, it is much clearer now. I would say the R6's trumps the wing (more grip at all speeds beats more grip at high speed) but it would be nice to keep the sways. That's the one thing that made this car so much better in the corners.

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Hotchkis ARB | Stillen CAI | Art Pipes | Berk CBE | Stillen AP Racing Brakes | AE Performance Oil Cooler | BC Racing ER Coilovers | Doran Control Arms