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Another V-cam Result

rtune

By rtune,
in Engines & Forced Induction

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rtune Experienced

rtune

Posted
Posted (edited)

After a series of disasters with various tuning shops around Sydney I finally have a result with my r34 gtr ..

Attached is the dyno, 390kw, which is nice. But the big difference vs before..

1. it accumulates revs like a motorbike

2. It boosts in all the gears, even 1st which makes legal street driving fun if you want it to be.

3. It feels very eager below 3000

At 4000 rpm, it is doing 175kw, and is nearly @ 1 bar

At 5000 rpm, it is doing 330kw and has topped out at 24psi.

From 5000 to 8000 it is ridiculous.

Below 4000 rpm, the car feels much stronger than it did with the N1s @ 270kw (it should feel more laggy).

mods are..

A fairly stock bottom end (Racepace stage 2 motor) but with a big sump and pump

A bone stock head but with basic hks v-cam on the inlet and a fat cam on the exhaust

Nismo twin plate clutch

2530kai

big injectors

direct wired but stock fuel pump

N1 manifolds

Nismo weldina exhaust

fatter intercooler

HKS knock monitor

HKS f-con vpro (MAP) piggy back the nismo ecu

HKS boost controller with A=19psi (the lower line) and B=24psi

Tunehouse charged quite reasonably for the tune, they had to obtain japanese software from a visiting HKS dignitary in order to fully program the v-cam map as the controller alone only allows a low-res map. I think it was the first v-cam they had seen.

Considering the mess the tune was in, uncertain state of the mods, etc, Jim @ tunehouse didn't take advantage of the situation.

His shop at Marrickville is like a forensic lab!

post-51561-1262582648_thumb.jpg

Edited by moneypit
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rtune Experienced

rtune

Posted
  • Author
Posted (edited)
So no before/after?

there were several before so I didn't know what to post.

The before @ tunehouse was with the crap tune, but same mechanicals.

before, as in, when I got the car from Japan, I posted previously in the 2.6

results topic:

http://www.skylinesaustralia.com/forums/po...194154-DYNO.jpg

Always confuses me with X axis in KPH but the power band, 1.3 bar,

was from 235 to 265kw. CRD said they could fatten the mid range

a bit with adjustable sprockets, power fc.

but now power band is from 325 to 390kw, starts sooner, and is higher

everywhere.

Edited by moneypit
XRATED Veteran

XRATED

Posted
Posted
We are doing a RB 2.8 Vcam with a Haltech Platinum Pro Plugin ECU. Vcam Uses Nissan VQ control valve and Cam position sensor and as Haltech have 350Z and R35 Plugins they know how to use them. Makes for very Good Cam control.

I'd like to see a locally developed V-Cam style product developed. There is a fairly large market base in Aus for such a device to suit a 26 head. The only reason I havn't got one yet is because of the price and difficulty to set up in Aus.

Any takers?

J.

gtr13 Proficient

gtr13

Posted
Posted

any info about your 2530kai turbos are they supposed to produce more power at the same sort of response as normal 2530's, any photos?

Sorry to be off topic but you must be one of the few people in australia to have these i didn't even know if they were in production yet no-one really seems to know much about them outside of japan

rtune Experienced

rtune

Posted
  • Author
Posted (edited)
any info about your 2530kai turbos are they supposed to produce more power at the same sort of response as normal 2530's

No idea. I was assuming they were basically the same as the 2860-5s, if they have been modified by HKS for better response I'm ok with that :D

I know there have been 2 prior variations of the 2530, prior to the -kai. Hopefully they get better each time.

attached is a picture of the R1 (some N1 variant) that came out, and the ones that went in. They sure don't look much different in size (n1 and 2530)

edit: looking at the picture again, I now doubt it is the -kai version. I think they are just regular 2530s !

the pictures online of the 2530kai show the housing with a big GT stamping, and a shiny placard.

post-51561-1262650114_thumb.jpg

post-51561-1262650123_thumb.jpg

Edited by moneypit
N I B Grand Master

N I B

Posted
Posted
I'd like to see a locally developed V-Cam style product developed. There is a fairly large market base in Aus for such a device to suit a 26 head. The only reason I havn't got one yet is because of the price and difficulty to set up in Aus.

Any takers?

J.

Garage101 have a prototype already. www.imports101.com.au Email Danny for details.

Fastrotor Proficient

Fastrotor

Posted
Posted
I'd like to see a locally developed V-Cam style product developed. There is a fairly large market base in Aus for such a device to suit a 26 head. The only reason I havn't got one yet is because of the price and difficulty to set up in Aus.

Any takers?

J.

Haha , i've been thinking about this for years why someone had not adapted a vct module off a newer car onto the 26 cams.... both intake AND exhaust.....

Thanks for the link... i shall have a looksee.

ShaneF , would this be something up your alley ?

Gary

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