Jump to content
SAU Community

Racepace Built R34 Gtr Nur Rb28 V-cam

tangomatt
 Share

Recommended Posts

tangomatt Proficient

tangomatt

Posted
  • Author
Posted

DYNO RESULT:

This is the email Beno sent me when the car was ready for pickup. I will let someone who knows about GTRs summarise what the RB28 V Cam feels like on the road:

Ben writes:

Hi Matt,

Car is final tuned now and the result is quite awesome.

Best road R34 GTR I have driven.

It makes 412kw @1.5bar.

Super smooth and mega responsive on the road.

Sounds great - cruises quiet as a mouse,

but step on the gas and it howls like the Mines R34GTR !

You are going to love this thing.

cheers,

Ben

The all important dyno graphs:

RB26 NUR vs RB28

dscf0092r.jpg

RB28 Power vs Boost:

dscf0094h.jpg

RB28 Power vs Lambda:

dscf0095x.jpg

Will post pictures of car this afternoon. Need to clean car first!

  • Replies 604
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

tangomatt
tangomatt

Let's start from the very beginning...... 2002 BNR34 VSpec II NUR purchased from Zele International in Japan through Powerplay Imports. It was delivered over two years ago. The car was in 5A condit

tangomatt
tangomatt

Picture of Racepace stage one exhaust as requested. This may look like any garden variety aftermarket exhaust, but there are lots of hidden sneaky tricks to make the turbos spool hard and fast.

tangomatt
tangomatt

Pro Photos have been processed. However, due to 'copyright' agreement, I cannot post any large format photos. All pictures are watermarked with 'Joel Strickland'. I apologise, but you all know abou

Posted Images

dazmo Proficient

dazmo

Posted
Posted

Awome build mate is a credit to yourself and race pace. Is always good to see cars built to such a high quality satndard

(parts and workmanship included). Would no doubt be one of the best road cars doing the rounds. As richard (beerbaron) said I cant fault the combo you have gone for. I can only wish the budget would allow for a v cam set up for my own car as an RB28 with Vcam and set of HKS 25/30 or GTRS would be the ultimate combo in my personal opinion.

GTRNUR Grand Master

GTRNUR

Posted
Posted

Great result Matt. Thanks for the comparison of the RB26-RB28 too. You can see where the added displacement and vcam fix the dip in the power delivery as it climbs onto boost.

Do you have a sheet with the torque figures?

tangomatt Proficient

tangomatt

Posted
  • Author
Posted

Thanks for compliments everyone!

9krpm Posted Today, 07:40 PM

What else has been done to the head beside the vcam mate?

I am led to believe that the head has received no modifications, no porting and polishing. But there could have been some 'secret sneaky tricks' done that Racepace did not divulge.

GTRNUR Posted Today, 08:12 PM

Do you have a sheet with the torque figures?

Sorry, I don't have a sheet for torque figures.

9krpm Mentor

9krpm

Posted
Posted (edited)

Isn't the torque curve on this graph?

dscf0092r.jpg

It's interesting where the power and torque curve intersect.

Very typical of a variable valve; it's similar to my turbo honda s2k dyno.

It would be nice to have rpm on the x-axis but I am just being picky :D

It's great to have a tuner/workshop that is dedicated to his work and customer service by sending you all of these information after his work.

Unlike a place that I've been to, I had to chase it up for weeks and still failed to get a final dyno run.

Needless to say I and my friends won't be back there in a hurry :banana:

:P for racepace ;)

Edited by 9krpm
NickR33 Grand Master

NickR33

Posted
Posted

wow... that's a power curve to make anyone jealous! can't imagine how good it feels on the road... power and boost curves are really linear, makes it far easier to drive fast

it looks the goods as well... those Z Tune guards are sooo nice

BBGTR Experienced

BBGTR

Posted
Posted
Could anyone enlighten me on how to interpret the power vs lambda graph. What is considered a safe tune?

Cheers

Matt

Matt,

To get the air fuel ratio you just multiply the lambda by the Stoich ratio (14:7) for petrol. In your tune the Lambda is showing about 0.82 which is about 12:1, which is spot on. My engine runs the same number and has had the living bjesus belted out of it for nearly 2 years.

Regards

Andrew

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • brillo
      Leak from Tokico BM50 Brake Master Cylinder

      By brillo · Posted

      Sorry to hear your HFM BM57 was faulty,  did you contact HFM I would hope they would be at least grateful for the information if there was some sort of manufacturing fault, you would hope they would be sympathetic even if your item was 2 years old if it had never been fitted. May I ask where it leaked from ?
    • The Bogan
      NC MX5

      By The Bogan · Posted

      Cats are called Bella, and Donna...  Like that poisonous plant And I remember your 2 monsters, I remember making a little bit of wee when you let them out... LOL I have already installed cat doors into the laundry where their kitty litter is, and the sun room, apart from the cat doors there's not going to be any permanent mounted stuff on the interior walls (interior doors are cheap and easy to replace) I will get a outdoor cat cage thingie once I finish the landscaping out back... https://catnip.com.au/ The only off limit areas are the main bedroom and the gym room....but, currently the cats are curled up in bed, in the main bedroom with the Mrs.....LOL, the off limits for the kittens to the main bedroom lasted about 5 minutes with Jackie I currently only have 1 free standing huge cat tree multiple level scratching post thingie in the lounge room, but, I will be getting another one soon now that I'm happy with the furniture layout in the back room and have a perfect spot for it  
    • joshuaho96
      UniClutch

      By joshuaho96 · Posted

      All of this is making it seem clear that running the Coppermix twin was definitely the way to go, especially in hindsight with how insane tariffs have gotten and the strength of the USD vs yen at the time.
    • MBS206
      Who has a Infiniti Q60, Q50 (V37)?

      By MBS206 · Posted

      That sounds like no chance of even importing one for road registering then Now I see why Duncan wants to check LHD rules for Targa...   I wonder how "bolt in" the AWD would be if you got one imported from the US and swapped it to an AUD one
    • Piggaz
      UniClutch

      By Piggaz · Posted

      Not to mention they drive like a bucket of bolts! yuck!
×
×
  • Create New...