R34 Gtt Sedan

[itsme]

Hi fellow SAU crew!

I've been tossing up for ages now whether to sell my baby and go on holidays or bite the bullet and finish her off, I'm thinking I'll finish it but I've spent ages looking around and not had much luck. I'm looking to retain a relatively stock/stealth look in the engine bay and I feel/think all I have left to do is turbo and injectors.

So, I'm looking to retain factory turbo position via either high-flowing my stock turbo or getting a direct bolt-on and direct fit injectors if possible. Would like to retain responsiveness as car is daily driver, any and all help will be greatly appreciated, looking for both advice on brands, and where possible the best place to get them from. I've contacted a few places on high-flowing which appears to be a cheap option and retains a factory position, on injectors I don't know about what brands are good, have come across Denso, Daetschwerks, Sard, Blitz etc and don't know what size I should be looking for. I'm aiming for a power output around the 350rwhp mark, currently sitting at 266rwhp.

Currently my set-up is as follows, if there is anything else you think would help or that I may need please let me know;

Engine/Drivetrain;

Stock internals, stock turbo.

Blitz turn-flow front mount intercooler

Turbo back exhaust system with Hi-flow CAT

Splitfire Coilpacks

Iridium Spark Plugs

Cooling Pro Alloy Radiator

Walbro 255lph in-tank fuel pump

Pod filter

Exedy Heavy Duty Clutch

Extreme Lightened Flywheel

Nismo short-shifter

Interior

Greddy Profec B Spec II boost controller (Low 7psi High 11psi)

Apexi PowerFC with Hand controller

Red & White LED’s for dash cluster/interior

Custom 3 gauge install above centre console

Nismo black Titanium gearknob

Handling

BC Racing BR Coilovers

Whiteline Racing extra heavy duty front and rear sway bars

JJR front castor arms

thanks in advance,

Steve

[-Jimmy-]

- 2 way diff

- Aero pods and skirts, URAS front lip

- 18x9.5 +20ish rims

- Pair of Recaros

Couple of things to think about.

[Nak]

+ for above

if you got the bank for it too you can hi flow your standard turbo to keep the stock look up

[patty_b]

gt3076?

[Razor36]

for turbo id got 3076r. injectors go nismo 740cc. fod 350-400hp easy.

With this power level you will have zero traction on 34gtt stockies if thats what your still running, so get some aftermarket rims with more width at the back(9.5inch possibly) and therefore thicker tyres for more tyre to the ground. the more tread at the rear, the better as you would assume with a rwd car, so you will get some better traction for launches.also i agree about the 2-way diff.

[itsme]

- 2 way diff

- Aero pods and skirts, URAS front lip

- 18x9.5 +20ish rims

- Pair of Recaros

Couple of things to think about.

I hadn't looked at a 2 way diff, is this going to make my car a pig to drive as a daily though? Recommend any specific brands or places to get them from?

I'd love to get a full 4-door origin kit but don't have the $$$ right at the minute so I want to do a bit more to the engine first, that may come later

Forgot to mention I have 18x9+30 Work Emotion XD9's on it (running spacers at the back)

Again, would love recaros but would rather put the money toward the engine at this point.

Thanks for your advice Jimmy =)

[itsme]

for turbo id got 3076r. injectors go nismo 740cc. fod 350-400hp easy.

With this power level you will have zero traction on 34gtt stockies if thats what your still running, so get some aftermarket rims with more width at the back(9.5inch possibly) and therefore thicker tyres for more tyre to the ground. the more tread at the rear, the better as you would assume with a rwd car, so you will get some better traction for launches.also i agree about the 2-way diff.

Sorry to sound naive but will a 3076r bolt up to the stock position? Also I was concerned if I went for a 3076 I'm going to get a fair bit of lag, any tips on where I should look for both the injectors and turbo? R34 NEO injectors seem to be a little harder to source than RB25DET non-neo engine due to the neo ones being top feed and all the rest side feed (I think I got this right way around). I've got 18x9+30 work emotion xd9s all round with some good rubber around them so hopefully that will be ok, as per my post above to jimmy I thought a 2-way would make it hard to drive as a daily? Again, seeking any advice on brands and best priced places to get the turbo, injectors and now after being talked into it possibly a 2-way =)

thanks bud.

[bubba]

3076 will NOT look stock..

IMO, this is what I would be doing:

Hypergear highflow in stock housings (or go see Grant at Per4manz)

3" metal intake pipe

z32 afm

Siemens 60lb injectors (stock injectors will get you to about 220-230rwkw but any more won't be safe)

NIStune

Make an easy 240-260rwkw and look as close to stock as possible, except for a couple of shiney cooler pipes and a pod filter.

Another point, don't waste any more money in Iridium or Platinum plugs.. NGK coppers work perfectly fine for a fraction of the cost.

As for the 2-way, I have one in my 32 and while I love it, it's not really a daily driving diff.. unless you enjoy a good clutch stab and lots of sideways, probably best to stick with a 1.5way for a daily.

[itsme]

3076 will NOT look stock..

IMO, this is what I would be doing:

Hypergear highflow in stock housings (or go see Grant at Per4manz)

3" metal intake pipe

z32 afm

Siemens 60lb injectors (stock injectors will get you to about 220-230rwkw but any more won't be safe)

NIStune

Make an easy 240-260rwkw and look as close to stock as possible, except for a couple of shiney cooler pipes and a pod filter.

Another point, don't waste any more money in Iridium or Platinum plugs.. NGK coppers work perfectly fine for a fraction of the cost.

As for the 2-way, I have one in my 32 and while I love it, it's not really a daily driving diff.. unless you enjoy a good clutch stab and lots of sideways, probably best to stick with a 1.5way for a daily.

Cheers heaps Bubba, I've already sent an email to Grant and he's noted he could do it for a pretty reasonable price so I'm considering getting it highflowed by him.

I hadn't considered the intake pipe, are these normally custom made or do you purchase them for direct bolt-on?

Also forgot about the Z32, cheers for reminding me

Any idea where to best source these injectors? Do Siemens make direct-fit R34 Injectors?

I've got a Power FC with Hand Controller so the tuning side should be ok.

I only went for the iridium because I was told they lasted longer, and with the R34 intake manifold being retarded and going across the top of the engine I didn't want to be having to change them too frequently, but it's good to know there's not much difference in the instance I ever do change the intake manifold =)

I'll do some reading on the difference between a 2-way and1.5 as I'm currently quite clueless. Do you recommend any specific brand or is it all very much the same thing?

thanks again to everybody who's helped out.

[bubba]

Intake pipe: stock is known to suck closed above certain power levels, you can get full silicon pipes (JJR etc sell them) that have plumback fittings for breather and bov. I'm running a piece of 3" stainless pipe that I picked up off the forums for cheap cheap.

Injectors: head over the the national For Sale area and have a look in the Group Buy section, there was a group buy for injectors that had a lot of info on Bosch and Siemens injectors and fitting for different applications.

Diffs: 1-way means it only locks on acceleration, 2-way means it locks on accel and decel, 1.5-way means it only locks half as much on decel as it does on accel. I run a Nismo GT Pro 2-way, nice unit.

[itsme]

Intake pipe: stock is known to suck closed above certain power levels, you can get full silicon pipes (JJR etc sell them) that have plumback fittings for breather and bov. I'm running a piece of 3" stainless pipe that I picked up off the forums for cheap cheap.

Injectors: head over the the national For Sale area and have a look in the Group Buy section, there was a group buy for injectors that had a lot of info on Bosch and Siemens injectors and fitting for different applications.

Diffs: 1-way means it only locks on acceleration, 2-way means it locks on accel and decel, 1.5-way means it only locks half as much on decel as it does on accel. I run a Nismo GT Pro 2-way, nice unit.

Uh huh, makes sense - Cheers mate. Will I be able to retain my factory BOV or will I need to upgrade that as well (trying to get an idea on total cost here =/)

I just found these injectors, although I generally avoid cheap ebay things these look ok and feeback is high; http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=370500877454

Cheers for the diff info, will begin looking at 1.5's now =)

Btw, not sure where you are located but there is a reasonable chance you know my car.. Black 34 Sedan with Fuschia Pink rims, hard to miss. Plus I cop HEAPS of sh*t for them, I blame Mr Eps he talked me into it. =P

[bubba]

Stock bov is fine and needs to remain plumbed back.

Injectors,you're on the right track but don't go buying random shit off ebay. The group buy was from an ebay trader call tuffcarparts I think (I got some 1000cc Rochesters off him a while back) and was a fair bit cheaper than that link, even for single sets.. have a read through here: http://www.skylinesaustralia.com/forums/topic/352869-group-buy-siemensbosch-injectors/

Nah I don't know your car but that does sound like something Rowan would do

[itsme]

Hey all, (mainly Bubba due to being so helpful =P)

I've been advised of the following;

The wiring plugs for both AFM and injectors are not a plug in adapter on each end. They are a wiring plug kit. This means they plug onto the injectors/AFM but need to be wired back into the loom.

The injectors are a 6 orifice wide split cone, high impedance injector

Bosch EV14 52lb – 550cc

· Set of 6 $450 + $60 for wiring plug kits (new plugs as supplied will need to be wired into your injector loom )

Bosch Z32 300ZX Airflow meter

· $265

Plug kit available as pictured below for $36 extra.

Freight on both items will be $18.

The pricing seems reasonable, I don't know if 6 orifice wide open split cone is good? From reading through other forums it appears these have received good feedback.

In related forums I've found people with these 550CC injectors with power outputs of 450+hp which is above my aim of 350hp so this all looks the goods.

Is wiring of the AFM and injectors to the loom difficult or is it something most tuners can do during install? What are your thoughts on the above in terms of quality and pricing?

Thanks again for all your help!

-Steve

[bubba]

I can do the AFM for you

Injectors, swapping plugs is easy (soldering iron and some heatshrink), I've just made a whole new injector harness for my 32 But swapping injectors themselves if you still have the standard plenum can be a bit time consuming due to the amount of stuff that needs to be removed to access the rail.

550cc is plenty for 350rwhp, they should support up to about 450-500rwhp on 98. The spray pattern is good too, it's the ones that spray like a hose that you want to avoid.

[autoworx]

we have done a couple of internally gated 3076s kits and some of the high flows with 3076 core.

I dont know there ok but in all cases the internal gate is the restriction . they will make a handy 350hp+ but the external gate variant would make up to 100hp more

also some of the cheap siemens/bosch with rail kits on ebay do not fit under the std plenum despite what they tell you . bolt in denso injectors will be a few hundred more but no need to mess around with rail , fittings , plenum if required.

[ecentrix]

Bubba! Still being just as useful as always!

+1 to the above from Bubba!

I miss my 34Gtt, it was a great car, but totally an acquired taste.

[bubba]

zomg it's tom! hurry up and get another skyline

[MADE]

I have roughly the same mods as you with the same goals. I went with the Blitz 525cc injectors and HKS GT2535 just wanting on a few small parts to install. (Z23 MAF and silicon intake pipe.) Hopefully it will be the right balance.

Edited June 26, 2011 by MADE