:icon18:

That could very well be true. I just thought it was funny to say only 17psi on a big single turbo setup.

:stirthepot:cheers, I hope they don't blow is manifold into recyclable plastic.

post some videos bro!!!!

Car is on the dyno with some new oil in the motor!

:happydance::happydance::happydance:

Well the results are in and unfortunately we didn't hit the 700 threshold. Darn it.. However, the torque and power curve is ridiculous! We think the .82 A/R hot side had something to do with it not being able to push to 700. When the boost was raised to 19psi it didn't help any. Sooo, I'm happy with the results, it's too bad we couldn't make what we wanted (oh well) but it did make some very solid numbers! There is a video being made of the car very soon. I'm as anxious as some of you are..

639.5 rwhp
615.7 rwtrq
16 psi
E85

http://i1066.photobucket.com/albums/...psgxrlbgye.jpg

Could be that single 3" exhaust held you back..

Yeah you could be right about that.. Maybe it doesn't have enough flow and one reason the torque is so high..

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

COSMO could be right but isn't he downpipe 3" too? That would mean you have a bottleneck in the whole system.

Could be your TQ number is that high because the turbine housing is undersized. A bigger A/R might fix that but my knowledge of designing a turbo setup stops at having read Maximum Boost by Mr. Corky Bell :tup:

:bowrofl:

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?

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...:tup:

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.

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..

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...

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...

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..

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

Where did you get 17psi as the max?

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

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..

My 3" upgrade is being fabricated as we speak

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

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.

At around 17psi mine are 4.7V and that's with my 3" intake tubes..
Still waiting to see that Mullet Hair do with your new mustang......

You got a long way to go.... if I recall correctly, the last few tenths of a volt are good for over 100hp. Anyone agree or disagree with that? I didnt really start paying attention to my MAF voltage until passing 550 and I believe i was already in the 4.7-4.8v at that point.

you got a long way to go with my hair too, its currently about a half inch long in the back.

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).

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.:tup:

I have the same hp/tq goal for my car, 475hp/425tq DD and 525hp/475tq drag.

Anyhoo, back to the VSR build.

YzGyz

Inside diameter of a 3" piece of tubing is 2 7/8". Standard thickness is .065" (1/16") on exhaust tubing.

The compressor is rated to flow 75lbs/min, and the fact that it is a BB turbo does not change that spec. Remember, the compressor can flow that much, but a small turbine can't. So when looking at a turbo and the HP rating, always assume that the HP rating is for the largest turbine available for that particular turbo.

Also, comparing a 2JZ engine to the VHR engine should not be done. They are very different. The VHR heads will flow 4 times more air...again, flow will reduce pressure and increase efficiency.

I have customers using the 6266 turbo on the VQ35, and making mid 600's on pump gas at 18psi of boost, not E85. The big difference is flow, because they all have the large T4 turbine housing.

Pressure and flow are two very different things, and if you can run 17psi of boost on the stock MAF's, then you have no flow (since this is what the MAF sensors measure). If you don't have flow, something is choking the system.

The comparison between the 2jz motor was just to show the psi rating for that turbo.

Wasn't sure of the inner diameter of the 3" exhaust but non the less it should be bigger to allow for more flow.

Sure you can run 17 psi on the stock maf's but it's really pushing the limitations due to the resolution.

Sasha has spoken everyone and for someone who makes these kits part time we should all listen too and never say anything without checking with him first...

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...

Time for some boost! VSR Motorsports Single Turbo Kit
 

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 :rofl2:

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

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

Again, pressure is a result of resistance to flow, so comparing boost pressure between two very different engines with very different VE's is non constructive.

You can pressure up the charge tubes to 100 psi if you want, measure the MAF voltage, and they will read 0 Volts. It is a mass air FLOW sensor, not a pressure sensor.

I am sorry if my knowledge and experience sharing with the comunity is offending you. I build the kits, and have been for a long time. The feedback I get from pro-tuners is really what matters...so when they say that the MAF sensors are maxed out at 11-12 psi (with 2.75" pipes), it means that the system is working very efficiently and the engine is actually ingesting a lot of air. This is with the 2.75" charge pipes. I suspect that the 3" should be good to about 15 psi, assuming EBP is low and the turbines are capable of good flow.

You seem to have some hard feelings towards me...and I have a couple of guesses why. Just remember that in the end it was your call.

Lets try to keep on topic and civil.


Thanks

Bobby is shooting the video tomorrow. So I would say it should be ready to watch in a day or so if not the same day. Looking forward to it!

Ordered an SPL rear knuckle monoball bushing kit and Whiteline diff bushings today. Also picked up some wheels and tires locally for a great deal. Wheels have tpms sensors Nismo valve stems and better rubber than my current stock wheels do. Wheels are varrstoen TE37 reps but who cares?

19x9.5 +22 255/35 Toyo T1R
19x10.5 +22 285/35 Toyo T1R

Fronts have good tread with lots of life. The rears not so much but should be good until I can get some R888s!

The diff bushings definitely help but the install sucks

You going with a 305 on the rear when you get new rubber?

Haven't decided yet man it's either 295 or 305.. I know once you get past 295 it jumps in price quite a bit.

Yeah looks that way so I just decided to let Bobby handle it while it's still down at the shop. That way once I get back I can just install my springs and camber kit, throw on the wheels and see how she does. On a unnaturally warm day of course. It's getting cold here now so not sure how many of those there will be.

Video being shot today since the weather didn't cooperate last time. The new bushings are all in as well! They are using this lovely lady for some added flavor in the shoot.. Her name is Anie Perez if any of you wanna give her a follow on FB etc.

Here's the video from yesterday. Nice to see the car again after the long journey. Bobby was throwing those one liners lol. Enjoy!