Quote:
Originally Posted by cosmogirl
Sasha can you tell me what kinda of difference the spool would be coming from a TT setup to a single? I may be interested only if I can sell my gtm TT kit for a decent price.
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Sorry, I missed this one. The spool will be as good as with your current TT setup (and I would get you the BB option at no extra charge), but a lot more efficient up top. The turbos I use are equivalent to the Garret GTX line of turbos since they have the lighter billet wheel, and can work at a higher pressure ratio. These turbos don't even start to shine until you get to 20+psi of boost.
Here is a pull on the heart breaker dyno on a built VQ35DE with a 8.5:1 compression ratio. This was done with the largest turbo/turbine I offer with this kit, the 6766 with a 1.32 a/r turbine housing. This was also a JB turbo, and the same twin scroll kit I build for the VQ37VHR. The higher CR of your build, more displacement and BB option will all help in spooling it up even better. I would guess that you would see 15psi by about 3700rpm. That will be plenty to get 500ft/tq out of a built engine at about 4000rpm.
Here is another dyno, also a VQ35DE, with a twin scroll, JB 6766 T4 1.15 a/r kit. This is a completely stock block, that is why the torque was kept at about 400ft.:
As you can see, these spool up great, and the power keeps climing all the way to redline due to the large turbine housing which allows the system to flow efficiently.