Which Turbo For Vq25-Det?

[bechopps]

I think you have been mis-informed, no-one here has fitted anything other than a highflow as far as I know. I am about to start work on a manifold adapter to run a GTX30 but it is a month off yet. Why don't you like the highflow? It would be a cheaper option as nothing else will bolt up. A t28 isn't the answer, our stock housings flow better than those, even better than the r34's op7.

What sort of power are you looking for and who is doing the tuning?

To clarify , they gt28 was given as one of two options. The other being high flowing. Neither were given given preference from the tune shop. They expressed that both options were comparable.they said the gt28 comes with a adapter kit making it a fairly straight forward fit. The gt28 will work out more expensive but i wont have to wait while my turbo is high flowed. They said both will give the same sort of performance.

the car is the wifes daily drive but why shouldn't she be going fast. Lag is a concern of mine.

[bechopps]

I have just done a gcg high flow. It was an engine out job. I got a 28/71 core. The power is increased a little and it is alot smoother. If your going to do the job I know a good place. Once the turbo was out I got the turbo rebuilt by ATS ask for Bill. He has done a few M35 turbos now.

Ive spoken to bill and he will remove and fit the turbo but he sends the turbo to Sydney to be high flowed. I been offered the same service for less coin. $1000 less which cant be ignored.

[scotty nm35]

To clarify , they gt28 was given as one of two options. The other being high flowing. Neither were given given preference from the tune shop. They expressed that both options were comparable.they said the gt28 comes with a adapter kit making it a fairly straight forward fit. The gt28 will work out more expensive but i wont have to wait while my turbo is high flowed. They said both will give the same sort of performance.

the car is the wifes daily drive but why shouldn't she be going fast. Lag is a concern of mine.

They are offering you a "kit" which no-one has ever heard of, let alone tried. I guess you are on your own on that one. Let us know how it goes please and get some pics of the adapter for me.

So your turbo hasn't gone yet? Leave the stocker in, its definitely the best for daily driving duties and no lag at all. Just stick an Emanage Ultimate on it.

[bechopps]

after more investigation , the real story is to modify the existing housing to accommodated a garret ball bearing spool. doing this changes the housing dimensions by 16mm. To then have this fitted requires more modification to the cast air pipe and a lot of d#%king around.The end result is better than the normal high flow option. But the normal option being a far less complicated procedure, that has proven its worth time after time. Not being overly keen to make things to modified i'm going to take all your advice and go with the standard high flow option. Thank you everyone for their input . I have also decided to install an e-manage ultimate at the same time. But none of this until the front mount is done which is booked in for Monday week. The rest will be depending on how fast i can find another turbo to be high flowed before the car is taken off the road. Can't afford to be to long with out the family car.

[Jetwreck]

The Garret bb option you speak of is what I have done....was a bit of dicking around.....but I'm happy with in now....mine was done with a gt30/71 core.

[Sunkist]

The Garret bb option you speak of is what I have done....was a bit of dicking around.....but I'm happy with in now....mine was done with a gt30/71 core.

+1 i was very impressed with the numbers it put out!

[scotty nm35]

Can't afford to be to long with out the family car.

Which is exactly why heavily modifying it may not be a great idea. Its ok if you are able to work on it your self and repair it continuously but if you are relying on workshops to do all your work, and they cant get you in when theres a problem (and there will be many) you will never be happy. The stock car with perhaps an Emanage is the go, its all downhill from there imo.

[ironpaw]

Check this out:

http://www.skylinesaustralia.com/forums/topic/360130-eoi-z33-circuit-car-part-out/

rebuilt VQ35DET with APS kit...pushing out ~450rwhp...

Am I the only one to think that's a pretty low number for a 20k upgrade? (engine + turbo + ecu+ other shit)

Then again max power isn't everything I suppose!

[WAGON_BOY]

just to get a better understanding.........

whats a sierra stage 1 core?

and is the sierra stage 2 core a GT30/71 ???

[Sunkist]

different sizes in turbine..

stage two ISNT 3071. but it is a similar size, give or take 1mm on the blades.

stage 1 is what ironpaw has tuned.

[scotty nm35]

Just different sized rear wheels, gives some idea on power levels I guess. Stage 1 should be good for 250awkw, stage 2, 275 and stage 3, 300, all dependant on supporting mods.

Garrett use the 3071 numbers, that would be the largest wheels you could machine into the stock housings, with a ball bearing core. Good for around 300awkw I would say.

[PN-Mad]

rebuilt VQ35DET with APS kit...pushing out ~450rwhp...

Am I the only one to think that's a pretty low number for a 20k upgrade? (engine + turbo + ecu+ other shit)

Then again max power isn't everything I suppose!

11 psi.... That would be stock for you eh? How much does a VQ25det at the wheels stock? bout 200hp atw, maybe add a bit extra for driveline drag...

I'd say that'd be a 6-700hp engine set up depending on turbos/fuel. Just looked on the APS site - apparently turbos will flow 800ps of grunt at 16psi with a built engine.

Or about double what mine will flow....

[ironpaw]

Well for a 20k+ setup u hope it better do 6/700+ HP!!!

[Commsman]

I love the "Twin Lambada support". So does it come with a couple of dancing Brazillians?

[Jetwreck]

Well for a 20k+ setup u hope it better do 6/700+ HP!!!

Depends how your spending the 20K....20K to build it and do a lot of the work yourself and 800PS+ on a VQ35 is very achievable.......20K and take it to someone else to do and 600PS is a pretty good number!

Edited April 7, 2011 by Jetwreck

[PN-Mad]

http://www.youtube.com/watch?v=xKXZT70gwNg

Decimate all at racewars...

[Sunkist]

overnight parts from japan. i want his ADHD tablets lol.. must make shit go real fast!

[iamhe77]

11 psi.... That would be stock for you eh? How much does a VQ25det at the wheels stock? bout 200hp atw, maybe add a bit extra for driveline drag...

I'd say that'd be a 6-700hp engine set up depending on turbos/fuel. Just looked on the APS site - apparently turbos will flow 800ps of grunt at 16psi with a built engine.

Or about double what mine will flow....

140ish awkw for a completely stock VQ25det RS... so around the 190-200hp mark, yes.

Yeah, but yours is designed to bolt on to the stock engine, not a built one... plus you have 1 turbo, not two.

450ps is still around 315kw, so fun is to be had regardless of numbers

Depends how your spending the 20K....20K to build it and do a lot of the work yourself and 800PS+ on a VQ35 is very achievable.......20K and take it to someone else to do and 600PS is a pretty good number!

For $20k, you could get a built 3.8 or 4.2L VQ35 and use the spare thousands to setup a turbo kit to your specs.

Should be able to see BIG power and torque with that kind of money spend of a VQ35.

[ironpaw]

140ish awkw for a completely stock VQ25det RS... so around the 190-200hp mark, yes.

Yeah, but yours is designed to bolt on to the stock engine, not a built one... plus you have 1 turbo, not two.

450ps is still around 315kw, so fun is to be had regardless of numbers

For $20k, you could get a built 3.8 or 4.2L VQ35 and use the spare thousands to setup a turbo kit to your specs.

Should be able to see BIG power and torque with that kind of money spend of a VQ35.

Well according to that guy's advert, he spent 17k on the Haltech alone???

Not trying to say that he's got a crap setup but I would think for that kinda money spent you'd get more power....(responding to PN MAD's post)

[Jetwreck]

140ish awkw for a completely stock VQ25det RS... so around the 190-200hp mark, yes.

Yeah, but yours is designed to bolt on to the stock engine, not a built one... plus you have 1 turbo, not two.

450ps is still around 315kw, so fun is to be had regardless of numbers

For $20k, you could get a built 3.8 or 4.2L VQ35 and use the spare thousands to setup a turbo kit to your specs.

Should be able to see BIG power and torque with that kind of money spend of a VQ35.

Who does the work though.

Less a Haltech PS2000 and the install and tune + markup! = $16,000 left. Then shipping/duty $14,000 left. Then workshop fee's for motor removal and install = $13,000 left. Then exhaust = $12,000 left. Fuel System = $10,000 left. Misc = $9,000 left

You now have $9,000 left to get to 800hp reliably!....how much are the 3.8lt or 4.2lt conversions? and then how much is turbo kit from the workshop going to charge?

Like I said 20K with you doing most of the work is good for at least 800HP.....a workshop doing most of the work at least 600HP....and I am talking with reliability.