GTM TT build - OCT 15th
 

40th Anniversary going TT. Planning to run it at 8PSI w/ 93 octane. (JNAUT) is doing all the labor and sending it over to Jack at HP for tuning... we'll post pics as the install progresses...

:excited:

Oh yes, it is always a good day to see a TT build starting up! Good luck with everything.

So you decided against the GT3, huh? Good call, methinks. :tup:

Good luck with the build!

You are going to love it :tup:

Sam

what is the limit of the stock engine and stock fuel system???
maybe 580whp???

You're going to need to upgrade the fuel system to push 580whp. Pretty sure 580 would be pushing things... most all of the TT guys are running around ~450whp.

ok, I think then, that the "weak" point here is the fuel system, but my question is: at what point??? how far can I go stock fuel system, and when I have to put pump and bigger injectors???

because the engine is awesome!!!!!
YouTube - GTMPOWER.COM Stage 2 Twin Turbo G37

Yep, the only way anybody is going to hit 580 WHP on the stock block is to run E85 or at least race gas.... both of which necessitate extra fuel capacity which is pretty massive at that kind of power level (700 bhp or so).

Though, the VHR doesn't like to make massive amounts of torque, so you may be able to get away with a serious amount of top-end power before you bust a piston. Torque kills rods, power kills pistons - generally speaking.

580 crank HP is probably closer to the actual limit.

Any turbo build is going to necessitate a higher capacity pump and injectors. The smallest injectors I'd ever use for a 450 WHP target would be 550 cc/min. You can do it while maxing out 440 cc/min injectors, but it's just dumb.

There is motivation of course, to run the smallest injectors possible on any platform. Driveability being the main one, but as people unlock the stock ECU further, that becomes less of an issue.

You can get 580 RWHP on a set of 600cc injectors and 255 wallbro pump, Here is a graph with our TT kit turn key fuel system . And yes this will be pushing things to the limit .

Sam

My goals are to be in the mid 400's without upgrading the fuel system. I think that's more than reasonable for a daily driver in order to retain traction. I can always get a boost controller later on, and up the boost to 9 or 10 if I get bored of 8. :icon18:

I should probabbly just leave it at 7 psi because afterall it is my daily driver and I want it to be reliable. I cant wait!!!!

400-500whp is a really sweet range for a RWD street car, especially one like the Z. I'm sure you'll love it.

If you went with internally gated turbos i would do a boost controller regardless of if you want to go more than 7psi or not. Even if the wastegate spring pressure is the "perfect" PSI, you will have a lot better spool up with a decent controller on it.

In for progress!

Have fun... :)

in for updates, good luck!

that graph is gorgeous, i love it, and the power band are amazing...

:yum: Welcome to the TT Club!

Those numbers look great... My goals are to be in the low to mid 400's. This is my daily driver so im really not looking to push the engine to its limits. Besides, anything over 450 to the wheels is very difficult to retain traction. Even though it would sound like fun

nothing that 2 Bridgestone Potenza RE11 305/40/19 dont fix

wrong at 430 whp dynodynamics numbers my 305 re-11 could only get traction in half of second gear , 1st gear no thanks .

its called throttle modulation. Anyone can jump on the gas and spin the tires but if you find the best RPM to launch from and the correct amount of acceleration i.e. throttle position you can drive all day fast with out losing too much traction.

Nothing a pair of good drag radials can't fix. Nitto has some nice street use radials.

Cool, might have to drive up to palm beach to check it out when its there! Can I take it for a spin?? ;)

Raul, I'm actually having it shipped to Jason for him to put it on and straight to HP logic for tunning. I'm not going to be present for anything... it's going to be brought back on the truck all done. I can't wait to see how it all comes out...

+1, more correct you can't be... :tiphat:

Ok... clutch is in, along with the new performance slave cyl from Z Speed Performance. Waiting on all the gauges, and TT kit should be shipping out in a day or two.

I'll keep you guys posted as everything comes along! :icon18:

I'm in..Good luck:tiphat:

So says the crack dealer! :tup:

I got my first shipment of "Crack" (TT Kit) yesterday. Felt like a kid on Christmas morning. The box was stuffed with so many goodies!!

-Thanks Sam and to all that post their TT adventures!!

We sell the best crack in the world :)

Sam

ughhhhhhhhhhh I want a TT 370z so bad.

350's could only dream about these numbers on stock internals and fuel system.

so I'm going to be a crackhead afterall I guess :icon18:

Just came back from a vacation, and jason (jnaut) has all the parts. Install on the way!

Dam, I'm Jealous, good luck with the build and keep us posted.

Hey, good to see your car is coming along. That kit effin rocks.

Just curious, did you end up buying the Clutch from CZP?

Btw, awesome that you finally went with Jay and Jack. I did that for my SC and now I wouldn't have it any other way. I'd recommend that everyone in Florida and surroundings considers this option, top notch mechanic and tuner.

Raul, I told coz or cox u sent me when I placed the order for the clutch. I'm really excited, Jason has the car right now and I think the install starts today. There was a small delay with getting all the parts situated but we got everything ready and good to go. I've heard nothing but good things about jason's work! I can't wait!

wow very nice!

asking as a noob, so if someone is looking for 430whp then fuel management and injectors can wait right? what about radiator stock with oil cooler is enough. I am planning on the same lines so that can spend strp by step just get a basic stage 1 tuner kit and get it tuned locally. Can anyone help which other parts would be needed?

clutch would be recommended along with the slave cyl sleeve or replace the the factory slave cyl with a steel version. Gauges, oil cooler is a must... you can run the factory radiator. I would recommend injectors and fuel pump for sure. Make sure you take it to a good tuner too...