Modifications Information for a NA R34

[XtremeHalfPower]

Hi All

Just when I started to think I was a festering wart in the world of Skylines, here is a forum dedicated to Naturally Aspirated Lines. Thanks to Demon Dave for the Intro Link.

Well back in Feb 04, I bought my dream a 1998 R34-GT N/A Skyline, obviously I wanted a turbo but got a fantastic Part-ex on my old Max Power Car, but couldn’t raise the extra cash at the time to go for GTS. Since owning it, It certainly quick enough, I’ve taken out many a car that’s tried for example BMW M3 (I started to pull away at 105 mph), Porsche Carrera S 2, Honda S2000 (on the Fly), Toyota Supra (all show no go) and many others. (Agreed they could have all been rubbish drivers).

Anyway, I'm now excited about the prospect of having an ultra fast N/A Skyline, because it's different and there is not that many out there, well in UK anyway.

So my quest is to start modifying it… but in stages, with each month’s pay packet.

I'm now looking towards my future projects in the form of a shopping list of what should be the next mod, in order to get the power up to Turbo Figures; 300bhp +

So far I’ve fitted the following.

Engine; Now maybe 230bhp??

* HKS Air Induction

* HKS Iridium Plugs

* Blitz Nur’ Spec R Cat back straight through System

(Originally made for the GTS, GTT but once I modified the Cat replacement it was fine.)

It has a 80mm Boar, and is outputting a deep throaty sound at low revs and then a screaming but sweet 105db at full power. Awesome :wassup:

Wheels & Suspension

* Antera 8x17 Alloys

* Rubber, Marshall 235/40 fronts & 265/35 Rear

* Lowered Springs

(I'm not sure of the exact drop as they where second hand but drops the ride hieght by about 2" maybe 3")

I felt the standard Nissan set up was unpredictable and almost dangerous at high speed, especially over undulating road surfaces. I also found that the back end would easily breakaway from you even in the dry.

The new combined wheel, tyre and suspension mods make a massive improvement in the handling, (THIS IS A MUST FOR ALL) I'm now much more confident when high speed cornering, in the dry you can feel the back wheels bite and dig in. Fantastic adition. :headspin:

NEXT Engine Modification Ideas

(Here’s where you guy's come in) has anyone any suggestions, experience, Performance gain figures or make and model recommendations for any of the following mods. or even any additional ideas I’ve missed out.

ECU

Remap?

Chipped?

Cool Air Compartment in engine bay for Air Intake

Vents in the Hood to let cold in and warm out.

High Lift Cams

High compression pistons

Tougher valve springs

Fatter head gasket to improve compression ratio?

NOS (anyone fitted one yet) is it a ‘do-it-yourself’ job or if I try will I blow myself to little pieces

Port & Polish

Exhaust Down Pipe

Exhaust Manifold

Super Charger?

Turbo?

Traction control diff or axel from a GTS or GTT ?

Front Splitter on bottom of the front bumper

Or Bomex Body Kit

Anyway that’s all I can think of for now but I’m sure you guys out there will have something to add.

[Demon Dave]

Hey there,

glad you found your way over here - this is the place for us N/A boys

re: your exhaust - if it was designed for a turbo model you might be not getting the full benefit of it - indeed you could even lose some power. I'm running a kakimoto system (main bore is 70mm, tailpipe 110mm) and I definitely notice a power drop at lower revs (compared with stock) due to lower backpressure.

The pod could cost you some power in the summer (not that it ever gets that hot in Old Blighty ) but without an intercooler reducing intake temps, I'd recommend some kind of cold air partition. Or maybe even ditch the pod and got with an uprated panel filter and a modified airbox....

[Driver]

i agree

[666DAN]

I agree they would have been rubbish drivers

I first thought of going the hardcore N/A route with my one...I was going to put the neo head on the RB30 bottom end and go from there with lots of bolt on goodies and port and polishing....then I looked at the cost and said **** that I'll turbo the engine and keep the high compression...well worth it bang for buck!

Dan

[Driver]

yea i was gona do all that, but i just sold the damn car and bort a turbo. The REAL thing!

I guess its hard to part with the car u got etc.

But if not, do an engine swap

With the money you will spend on doing all that u could put in a turbo engine with more power ild say.

But unless u wana be all origanal and go for N/A power, do it!

[nismoman18]

well uve certainly got a nice list there. Go with what ur heart desires, ECU is definately a must, make sure u do things that give u a really good power band from down low all the way to redline. Thought about higher compression kits for higher revving ? can u imagine the power output say at 9000 rpm with forgies and shit endless possibilities man!

Clint

[XtremeHalfPower]

well uve certainly got a nice list there. Go with what ur heart desires, ECU is definately a must, make sure u do things that give u a really good power band from down low all the way to redline. Thought about higher compression kits for higher revving ? can u imagine the power output say at 9000 rpm with forgies and shit endless possibilities man!

I presume forgies, are Pistons?

[meggala]

this is one that was done in japan

more pics here the page has cycling pics

http://www.donguri.sakura.ne.jp/~power/lib...4NA/ER34NA.html

[XtremeHalfPower]

Thanks for that link.... Obviously these guys know what they are doing and just look at all those Skylines in the back ground on the outside pic... Luuverly

I cant suss out whats going on with the mod... almost looks like a different engine once mod is done.. but presume its a different head... obviously different manifold and ECU ..... shame I cant read Japanese... I will have to get the page translated ..if I remember correct I think Yahoo translates?

[Morgs]

You can't knock the good old NA.