hello.

im going to be placing an order for a Speed Force Racing TT kit soon.

the question i have is this: there turbonetics t04B 60-1 turbos seem very very big. i havent been in one, but i was thinking about swapping the turbos for spme smaller ones that have linear torque and then the torque tapers off after 5900 rpms.

these turbos may seem more responsive, but i dont want to lack anything top end wise.

so if u guys had to pick, would u choose the t04B 60-1 or the custom built turbos that are more responsive?

 

That kit is made for big power out of the box. Even then, the new APS Extreme turbo kit is more complete. SFR however are very competant. Its better that you take this up with them. I think they use teh same turbos that turbonetics use in their ST kit, which flows up to around 550bhp. So, that system should be able to flow up to 1100 hp. There are other limiting factors, cams, heads, exhaust for example.

 

I would go with the smaller turbos. Thats what I have and I have the Speed Force Racing kit... I love it and my cars still at their shop. I was one of the first to get their kit(2nd in USA). Awesome people that know their stuff.

 

so u dont have the t60-1???? how does the car feel?

 

From what I've read of that kit.

The turbos are mounted lower than usual, and need a scavanging pump for the oil since gravity is not on your side. Why not just get a kit that's designed around smaller turbos if you want to run smaller turbos. Their mounting and oil recirculation wouldn't be needed if you wanted to run smaller turbos, wonder how loud that pump is?

 

I think you should just get the kit and see how it goes. But to be honest I think that kit should spool up quick. Yea I know it won’t be the quickest spool but it will be fast. Plus also they have a ball bearing option.

 

Speed Force Racing uses a pair of 60-1 Hifi/Stage III turbos which is a slightly smaller turbine then the one Turbonetics uses in their sinle kit. All that being said there is a little lag but its more then made up with top end power. If you wanted something smaller you might consider a pair of T04E 50 trim compressors and Stage II turbine. Max power will be significantly lower though. (thats power potential)

 

thats what i might do, spool up faster and if i need something for the top end ill throw in some Cry02

 

Cryo2? Meaing CO2. Thats not going to help your top end much. Did you mean NO2?

 

Cryogenics Intercooler spray. wont it slightly increase hp top end wise because the air becomes denser and colder????

also looking at the graphs of those t3/t04E they have a very linear torque responce, but it tapers off after 5900 rpms or so.

 

I wouldn't spray that DURING a run. If you intake ingests concentrated CO2 during a run I'm sure its not going to have a positive affect.

 

yea but my question is

thoise t3/t04E torque responce is liner, but after 5900rpms they taper off. So after that, the car will be almost non responsive.(not exactly, but you know what i mean), so how would i handle that?

 

do u think its better to have the t3/t04 E for the street or the T04B60-1 for the street?

 

Where are you seeing that? IDK of any turbo kit for the Z that uses T04E 50 trim compressors.

 

they build the headers to order, so its my choice how i want them to build it. basically, im looking for responsive turbos throughout the full rpm range.

the t60-1 better in the top, t3/t04E better in the lower rpm range. two different extremes

 

Right but you can run a different compressor trim to change the response. A good mix would be a T04 E 57 or 60 trim compressor with a T3 (Stage III) turbine .68 A/R

 

yea thats what i will probably do, back to work now haha

 

I've got to ask you this: Is your motor built?

Otherwise, that kit, and the power capabilities, are far more than you need right now, and I'd suggest the greddy tuner kit with UTEC, or the JWT kit.

 

my motor is not built right now, but it will be in a few weeks.

 

The good news is that we can tailor the turbos around the customers needs.For example one of our customers just got two 62-1 hifis with stage 5 turbines. Can you say crapload of power?