99 R34Gtr Vspec, Now Stroked!

[GTR-N1]

...looks like you could only see half of him in the mirror after he passed you Sean!

OUCH, must have been close to your panelwork too?

[GTRsean]

Ha ha, nope mirror was facing a funny angle!!

Had a look in the daylight today and the only things that copped mirror glass was, driver window, b pillar, and rear spoiler blade.

Have to wash the car to see if any paint was damaged.

Also went back to the spot where it happened and picked up the plastic bits of the side mirror off the road.

[GTRsean]

Fitted the pump, injectors and airflow meters. Then played with injector and airflow meter %'s to get it to run! Wide band 02 up the tail and made it run well enough to drive to the tuners. New set of spark plugs, 18PSI ran up 285AWKW.

The boost controller wouldn't hold boost properly above 18 PSI, and it was suggested that I get something better (EVC 6), as well as some newer cam gears as the old one's don't have timing marks. It now drives a lot better with the car pulling cleanly past 8000RPM where before you could feel it drop off after 6500-7000RPM. Makes me like the -9's even more! 22PSI is the next aim once boost controlling is sorted!

Just to get to the fuel pump, rear stiffener and brace need to be removed, also: rear seats, blanking plate, computer racks, plugs and connectors etc.

Injectors and AFM's are the easy part as usual!

I removed some dead weight, it added up to 9KG, but left the rear strut brace in of course.

I removed the carbon insert in the front bar to fit some mesh and refitted.

[levinboy]

Looking good Sean you will love the -9s at 22PSI

[snozzle]

I suggest you run hks actuators if you want to run 20-22 pounds without the boost curve falling over.

My turbos spike to 1.5bar then drop down to 1.3bar by redline, i havent been able to get rid of that spike

[Chris-06R]

Loving your work Sean.

One question - how different is the Nismo fuel pump in terms of size compared to a Bosch? Nengun has them for double the price + shipping compared to the Bosch pumps - worth it?

[Luke_ENR34]

U keeping the carbon front bar duct or want to sell?

[GTRsean]

Thanks Nick, I'm looking forward to more, but it's so good right now!

I'm already running the HKS adjustable actuators, as per previous posts.

Cheers Chris, They are the same size physically, but the nismo offers more flow. I just wanted a fresh bolt in solution. The 044 will outdo it at higher boost, but not for my aims.

Ha ha it's staying on the car Luke!

[SiR_RB]

hey mate cars coming along beautifuly !

what boost control problems did you have Sean? those wastegate actuators should be holding boost much more steady as the boost controller isnt working as hard. did it spike to 20 or so psi then drop to 18psi by redline?

thanks

[GTRsean]

I'm thinking it is more the wastegate actuators fault, they are holding 11.5psi with controller off, so I will need to put in more preload on the actuators.

Controller is struggling to hold higher boost, 18psi+ for example. Graphs I got today tell the story.

AWKW

Once I sort out actuators, it'll will be ready for 22psi

[snozzle]

Wow that boost curve looks EXACTLY like mine.. good thing im getting rid of my twins next week!

Great power considering max power is being made at only 1.2bar almost exactly what i made with -7s.

Edit: does anyone think its a possibility that the stock bovs are opening slightly when on full boost hence the boost falling over? I wonder if stronger BOVS will make any difference.

Edited September 7, 2011 by snozzle

[GTRsean]

Stock bovs are a great piece of kit, if in good nick....

My issue is actuators I'm sure. I'll soon find out once I adjust them.

[GTRsean]

Got some new bits to fit, nismo stuff!!!

So I fitted the Nismo MFD upgrade boards and new map sensor. Did the calibration and it all works.

G sensor, lap timer, oil pressure, 2 bar boost gauge and more scale on the other readings.

Also got the oil air seperator tank kit, and I'll probably fit that soon.

[sinistaGTR]

Nice mate, the nismo MFD...Im jealous lol

[GTRsean]

Thanks Dan, I've wanted one for ages!!, but needed to save up first!

[BOBBYr34]

Wow, some nice nismo gear

[RBish]

real nice gtr, good choice going with map sensors, how much are the nismo ones worth?

[GTRsean]

You know it Bob thanks again.

Thanks RBish, the nismo mafs I chose because, I have played with map sensor based stuff on the 32 I used to have. Takes longer to get right and altitude stuff it around too.

I got them for $700 or so new but they usually go for around $900. Good to have fresh bolt in stuff.

[usmair]

Fitted the pump, injectors and airflow meters. Then played with injector and airflow meter %'s to get it to run! Wide band 02 up the tail and made it run well enough to drive to the tuners. New set of spark plugs, 18PSI ran up 285AWKW.

The boost controller wouldn't hold boost properly above 18 PSI, and it was suggested that I get something better (EVC 6), as well as some newer cam gears as the old one's don't have timing marks. It now drives a lot better with the car pulling cleanly past 8000RPM where before you could feel it drop off after 6500-7000RPM. Makes me like the -9's even more! 22PSI is the next aim once boost controlling is sorted!

Just to get to the fuel pump, rear stiffener and brace need to be removed, also: rear seats, blanking plate, computer racks, plugs and connectors etc.

Injectors and AFM's are the easy part as usual!

I removed some dead weight, it added up to 9KG, but left the rear strut brace in of course.

I removed the carbon insert in the front bar to fit some mesh and refitted.

really looking forward to this

when's it going in next?? and who's doing the tune??

i probably should get heavy duty actuators before getting mined sorted too

[GTRsean]

Patience grasshopper!

Here's some pics of the oil/air separator tank fitted. It took 2 hours to fit, top hoses were easy, then jack the front up to get to the rear turbo oil drain fitting and replace it with the new 3 way fitting. Only had to remove the bottom chassis brace to get in there, and use some uni drives to get to the bolts etc.