R34 GTR rb30/26 turbo selection

[martyr34gtr]

R34 GTR rb30/26 turbo selection

Hey I'm currently in the process of my 26 getting pulled out of my r34 gtr vspec as the block has cracked between 3 and 4 cylinders. Ive decided to go to a rb30 now with my 26 head. The head is getting redone with all the goodies to handle some good power and the block is getting forged rods and piston. I'm going to use the standard twin turbo setup and inlet plenum as I want the engine bay to look standard.

Now I've got all the motor plan sorted out I'm trying to decide my turbo selection. I want really good response and mid to top end power. I'm deciding between the garret -5 or -10 my goal is 450kw Atw

 

[Shoota_77]

I had the -5's on my 26 which I found to be a bit laggy but I've decided to keep them and hoping they'll be perfect on my 30/26.  I've got a similar goal of 450kw but will be happy with 400-425kw as long as the response is good which I'm expecting it to be on the bigger motor, higher comp, oversized valves, etc.  If I had the spare coin I'd go a precision 6466 or a BW EFR but I'm sure 400+Kw will be enough for now.

You'll pick up a set of -5's pretty cheap (under $1500) and still get the same money back 6 months later if it's not enough so they're worth a try I reckon!

Good luck with it, let us know what you decide.  I'd love to give you actual data but I'm still a few months away from hitting the dyno! 

[brodielezgt]

The 6266 will do the job good for 750 bhp
I got one comes on at 3200 rpm stock head. Will be a weapon with a built head . What is a -5

[Shoota_77]

Garrett 2860-5 hence "-5's" or "dash 5's". 

[martyr34gtr]

Will be interesting tone see your dyno when your finished and compare. 

I ended up getting choosing -5 turbos  aND also going for a rips forged rb30 as he only lives 30mins up the road from me. We are currently just fitting some custom oil and water lines to the motor before we put the motor back in the car in the next few days.

Dynos on the 21st of November 

[Shoota_77]

Sounds awesome, very keen to see what it makes on the rollers.  What's your goal?  Should make around that 450kw mark with all the right supporting mods (exhaust/fuel supply/injectors).  Hopefully they've all been upgraded?

Let us know how you go.