Time for some boost! VSR Motorsports Single Turbo Kit

COSMO · 01-23-2015, 09:55 AM

No I don't think you would loose any torque but the curve would change.. You have to figure the ID ( inner diameter) of that 3" exhaust is probably 2.75 depending on the wall thickness. Turbo/ turbo's need No backpressure, Superchargers need some though...

Quote:

Originally Posted by MidnightBlueZ

Yeah I think it could be possible but yes the downpipe is 3" too. 3" from the turbo back to be exact. Maybe a dual setup would help peak hp but would lose torque?

carlitos_370z · 01-23-2015, 08:20 AM

DAMN CAN WAIT TO SEE THE VID.. BTW THOSE ARE GREAT NUMBERS

MidnightBlueZ · 01-23-2015, 10:00 AM

I agree it would change some sort for sure! I love the single exhaust though it sounds awesome. I kinda doubt it's a 1/4" thick wall tube though. Still interesting..

By the way I did find out the charge piping is 2.5" which I believe BP stated before.

COSMO · 01-23-2015, 10:22 AM

The 2.5 in your case is fine because you have aftermarket MAF's.. The stock would have maxed out at 17psi with 2.5" intake tubes..

Quote:

Originally Posted by MidnightBlueZ

I agree it would change some sort for sure! I love the single exhaust though it sounds awesome. I kinda doubt it's a 1/4" thick wall tube though. Still interesting..

By the way I did find out the charge piping is 2.5" which I believe BP stated before.

jwick · 01-23-2015, 10:55 AM

Quote:

Originally Posted by COSMO

The 2.5 in your case is fine because you have aftermarket MAF's.. The stock would have maxed out at 17psi with 2.5" intake tubes..

Where did you get 17psi as the max?

I have 2.75" intake tubes and stock MAFs. I maxed at 11.3psi

COSMO · 01-23-2015, 10:00 AM

Also that turbo is rated at 750hp since it is non ball bearing so I was expecting atleast 700whp on e85.. The max on that turbo should be right around 36psi..

COSMO · 01-23-2015, 10:02 AM

Can't imagine the heat that thing is going to generate since it is bottlenecking. I would highly suggest picking up a FI exhaust and open that thing up so it can breath and send a log to mike so he can make adjustments on your a/f...

COSMO · 01-23-2015, 10:10 AM

Here is a dyno I found from a Toyota supra using a 6266,6466, and 6766 precision turbo.. Notice the 36 psi but also keep in mind the toyo has a 3.0 liter motor and the z is a 3.7. The z will allow more air flow volume so 36 psi would not be needed...

MidnightBlueZ · 01-23-2015, 05:14 PM

Quote:

Originally Posted by COSMO

Can't imagine the heat that thing is going to generate since it is bottlenecking. I would highly suggest picking up a FI exhaust and open that thing up so it can breath and send a log to mike so he can make adjustments on your a/f...

Don't know why they don't use a Twin Scroll like bp..

I may pick one up in the future but I'm good for now. Wouldn't be a cheap upgrade and I love the sound of a single. I'm more worried about traction right now. The power this is making is plenty. I know what it can produce later but where I'm at will suffice.

I don't think the twin scroll would fit as easily or maybe at all...

jwick · 01-23-2015, 06:38 PM

Quote:

Originally Posted by MidnightBlueZ

I may pick one up in the future but I'm good for now. Wouldn't be a cheap upgrade and I love the sound of a single. I'm more worried about traction right now. The power this is making is plenty. I know what it can produce later but where I'm at will suffice.

I don't think the twin scroll would fit as easily or maybe at all...

You'd have to modify all your hot side piping going into the turbo to run a twin scroll. It would sound no difference. I also wonder if you have the room under the hood for the turbo because the twin scroll turbine housing is larger.

I say enjoy your car and spend your time trying to figure out how to make 620wtq hook

MidnightBlueZ · 01-23-2015, 06:48 PM

Quote:

Originally Posted by jwick

You'd have to modify all your hot side piping going into the turbo to run a twin scroll. It would sound no difference. I also wonder if you have the room under the hood for the turbo because the twin scroll turbine housing is larger.

I say enjoy your car and spend your time trying to figure out how to make 620wtq hook

That's what I was referring to in my last statement not being enough room.

traction will be a great task with this one lol..

COSMO · 01-23-2015, 10:24 AM

Don't get me wrong those are great numbers but your system could be a lot more efficient...

COSMO · 01-23-2015, 11:22 AM

Don't know why these turbo kits just don't use 3" intake tubes so the MAF's aren't maxed out. My gtm TT kit came with 3" intake tubes and I'm on stock MAF's..

phunk · 01-23-2015, 11:32 AM

Quote:

Originally Posted by COSMO

Don't know why these turbo kits just don't use 3" intake tubes so the MAF's aren't maxed out. My gtm TT kit came with 3" intake tubes and I'm on stock MAF's..

Stock MAFs and 2.75" tubes for my car.

Is anyone actually hitting the end or just getting close to it and stopping? Once I started nearing the end, every .01v took a lot more air and when it looked like it was going to max out, there was still a lot more power left. I did eventually max them out just before I stopped going higher anyway.

jwick · 01-23-2015, 12:00 PM

Quote:

Originally Posted by COSMO

How much more boost are you going to push your car on a stock block?

Not hardly any. My goal was 525whp and 450-475wtqish. I'm at the torque level but not HP. We did a pull at 11.8psi and it hit 518/479 but it leaned out a little up top so we dialed it back a half pound and called it a day (503/465).

Quote:

Originally Posted by phunk

Stock MAFs and 2.75" tubes for my car.

Is anyone actually hitting the end or just getting close to it and stopping? Once I started nearing the end, every .01v took a lot more air and when it looked like it was going to max out, there was still a lot more power left. I did eventually max them out just before I stopped going higher anyway.

I'm maxed out. At 11.3psi I'm at 5Vs around 7200-7300 rpms. When I log it in UpRev one MAF sensor reads 5.0 and the other is like 4.95. I can't say which one is maxing because the chart in UpRev doesn't differentiate.

Phunk - I also think it's about return fuel setup time. Need to get on the phone with you and discuss a few items to determine what's the best direction.

01-23-2015, 08:20 AM	#2 (permalink)
carlitos_370z A True Z Fanatic Join Date: Jul 2013 Location: Puerto Rico Posts: 7,157 Drives: 13 Nissan 370Z SP M6 Rep Power: 7587	DAMN CAN WAIT TO SEE THE VID.. BTW THOSE ARE GREAT NUMBERS MidnightBlueZ likes this.

01-23-2015, 10:02 AM	#7 (permalink)
COSMO A True Z Fanatic Join Date: Dec 2012 Location: FL Posts: 1,816 Drives: 2012 Touring GTM TT Rep Power: 20	Can't imagine the heat that thing is going to generate since it is bottlenecking. I would highly suggest picking up a FI exhaust and open that thing up so it can breath and send a log to mike so he can make adjustments on your a/f... jwick likes this. Last edited by COSMO; 01-24-2015 at 05:22 PM.

01-23-2015, 10:24 AM	#12 (permalink)
COSMO A True Z Fanatic Join Date: Dec 2012 Location: FL Posts: 1,816 Drives: 2012 Touring GTM TT Rep Power: 20	Don't get me wrong those are great numbers but your system could be a lot more efficient... MidnightBlueZ likes this.

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01-23-2015, 10:00 AM	#3 (permalink)
MidnightBlueZ Enthusiast Member Join Date: Apr 2013 Location: Nashville, TN Posts: 291 Drives: 13 Nissan 370Z Turbo Rep Power: 17	I agree it would change some sort for sure! I love the single exhaust though it sounds awesome. I kinda doubt it's a 1/4" thick wall tube though. Still interesting.. By the way I did find out the charge piping is 2.5" which I believe BP stated before.

01-23-2015, 10:00 AM	#6 (permalink)
COSMO A True Z Fanatic Join Date: Dec 2012 Location: FL Posts: 1,816 Drives: 2012 Touring GTM TT Rep Power: 20	Also that turbo is rated at 750hp since it is non ball bearing so I was expecting atleast 700whp on e85.. The max on that turbo should be right around 36psi..

01-23-2015, 11:22 AM	#13 (permalink)
COSMO A True Z Fanatic Join Date: Dec 2012 Location: FL Posts: 1,816 Drives: 2012 Touring GTM TT Rep Power: 20	Don't know why these turbo kits just don't use 3" intake tubes so the MAF's aren't maxed out. My gtm TT kit came with 3" intake tubes and I'm on stock MAF's..