I know you guys are all road racers but do any of you hit the drag strip? I have searched all over and on multiple sites and have not found any 1/4 times for the JWT kit. Maybe searching owns me but I haven't seen it yet. What kinds of times do you guys run? What are your shift points? What gear do you cross the line in? What are the trap speeds? Also do any of you guys have JWT kits without built motors? It seems your power drops off near 5800 rpms and all of you have cams. Where can the guys without cams expect to see the power drop off? I still haven't seen any cams for the 06s yet and would hate to see a JWT kit losing power after 4800rpm without cams.

 

Unfortunately there isn't really any 1/4 mile tracks in our surrounding area (Southern California) any more There is a few 1/8 mile tracks but thats about it. So we at VRT do not do much drag racing with these sports, and sports luxury cars.
About half of our JWT TT installs are on stock motors (mostly without cams).
We try to build a car for each individual clients wants and needs, within their budget. If a customer was to approach us to build them a VRT car equiped with a JWT TT kit, with drag racing it being their goal, I am sure we could build them a very potent 1/4 mile beast .
Could be fun!

Here is a link with some stats for you........
http://www.violentracing.com/ProjectCars/

 

i'm no tuning expert but the power drop you've noticed is probably due more to timing being pulled rather than cam profiles. maybe the experts can shed some light on the topic?

 

I'm going to drag mine this weekend, but I'm not running full boost yet, only 6.5-7 pounds or so. I think that I'll be able to get somewhere in the low to mid 13s at LVMS. 2200ft above sea level and it's over 100 degrees outside here already. We'll see.

Keep in mind that it's an auto and the -3 degrees of camber that I'm running in the rear is going to make hooking up a *****.

 

I don't know. I think you'll do more damage than good if you go out to the strip with a boosted Z and run 13s. I would expect low to mid 12s at least.

 

Best I ever ran NA at that track was around 14.4 - 14.5 so a full second gained isn't bad at low boost. Vegas heat and altitude take their toll.

 

I don't know about the heat and altitude problem of Vegas. I can't imagine it would be much different than the guys out in AZ are dealing with and they are cranking out some of the fastest times in the country.

 

I honestly don't know anything about the AZ tracks, but I'll look them up. I do know that even the NHRA guys have a heck of a time trying to make power out here.

But like I said, I'm just a stock block auto running on low boost with a lot of camber. I'm not looking to break records or for bragging rights. If you don't want my input I'll not post my slip.

 

I know I'm thread-jacking... but can I ask why you guys chose to go with JWT for TT instead of Greddy, APS, PE, etc?

 

I haven't gone with JWT....yet. I was hell bent on APS but the JWT numbers are nice. I just want to know why the numbers drop off so quickly even with cams. The turbos can't be running out of steam that soon. The turbos couldn't be much smaller than the tiny stock turbos of my Z32TT were and that car pulled all day up to 15 psi or so. I wouldn't mind adjusting my driving style to different shift points for that much torque. I have also heard that the ugly piping in the JWT kit has been redone and there isn't so much of it and that there is a solid FMIC instead of the connected two-piece one. Unfortuntely, in Houston, I'd be crazy to use anyone but SGP but they aren't big on the Unichip. I don't want to spend a few extra grand to work around their abilities. I know I have time since the APS kit doesn't fit the 06s yet so they may have their new software ready by the time they redesign some piping.

 

Your time slips will be the first. I think plenty of people will want to see them. I care more about your traps than anything else. I'll make my own 60'ers. When you do go, try different shift points out and don't just run to red line. I wanna see what you do to get your best times.

 

I have a JWT TT kit installed. Running on the base map (6.8psi). I dynoed 399hp/364tq before I installed the test pipes.

I went to the local 1/4 mile drag strip last week. My first time ever at a dragstrip, mind you. I also have the OEM Potenzas on the Z. I managed to get 6 runs in. My 60' times were absolutely terrible. My best 60' was a 2.38, best ET was a 13.60, and best trap speed was 111.

Elevation is about 600', temp was about 60 degrees, humidity was about 60%.

I estimate that if I were to get my 60' down to 2.0-2.1, then my ET could be in the high 12s. I estimate that the trap speed may only go up 1 or 2 mph.

I cross the line obviously in 5th gear, all shift points are right at 6500-6600.

I have a tough time getting off the line obviously, partly due to my Tilton clutch/flywheel, but mostly due to the fact that I'm new at this whole drag racing thing.

Hope this helps.

--John

 

Here are some of my slips:

60'----2.733
330----6.563
MPH1--87.11
660----9.429
1000---11.841
MPH2--111.77
1320---13.836

60'----2.432
330----6.218
MPH1--87.73
660----9.168
1000---11.630
MPH2--110.30
1320---13.646

60'----2.439
330----6.406
MPH1--86.85
660----9.360
1000---11.828
MPH2--109.41
1320---13.849

Since I'm new (inconsistent), it's tough to judge these numbers and compare them to this kit and/or other kits.

 

Trap speeds are good, but yeah, you are obviously having problems hooking up off of the line.

 

anybody with the JWT TT gonna chime in?

 

That question has been beaten to death, but the big factor for me was the JWTs quick spool up.

 

my decision was based on support - tech support and supporting the home team. Jim and Clark are very accessible (to the tuner) and continually develop their products. I was turned off by Greedy releasing a tuner kit. APS is the most complete kit but you'll pay for it. Also, need a unichip tuner for support.

 

Thank you for your answer

 

JWT is the way to go. I had mine done by VRT, they have not focused on a drag car as of yet, they focus more on the track. I can tell you it is the best kit that I have ever driven, I had the Greddy and have driven some of the other ones and I LOVE it!
I have been to the track, but not the drag strip, I also do not know if I will ever go to the strip, but I have killed a BUNCH of cars on the road.

 

+1 good point.

What actually pushed me over the edge was when Mike B gave me a ride in his once it was done. Damn that things a monster. I think that I called VRT the next day.