Gaining Power Without Turbo On R34

[i like beer]

hey guys recently just got a skyline r34 gtt 4 door naturally aspirated, im new to skylines and high peformance cars and i wanted to find out what mods i could make to my car to get the most power with out applying a turbo. ive got about $3500 to spend at this stage on engine mods, what should i do first?????

cheers

[N-DAWG]

Extractors, Catback Exhaust, High Flow Cat, High Flow Panel Filter.

Then spend the remainder on tyres, sway bars and springs.

I know the second part isn't directly related to getting power out of the engine, but it will help in making use of the power.

I done my suspension, tyres and brakes first before touching the engine.

A good tyres will help with accellaration, traction, braking and handling. Springs and sway bars will help lower the cars centre of gravity, reduce body roll and allow you to take corners and curves in less time.

If you're purely after outright power without a turbo then it's going to cost a lot to get any big gains. Don't get me wrong, it is possible, and I respect those who go down the path of modding an N/A Skyline. To really get big power though, you're going to have to do a lot to the engine internally, and really a RB30/26 build with high compression is the best way to get big power out of an N/A Skyline engine.

The R34 25GT Sedan has its fair share of weight as well which doesn't help.

I suggest reading here:

http://www.skylinesaustralia.com/forums/Po...sp-t194033.html

http://www.skylinesaustralia.com/forums/Na...-E-t138169.html

In these threads you will find the majority of your answers

Edited June 1, 2009 by N-DAWG

[SHANE666]

+! with what Nathan has said above.

You should be able to extract a decent 130rwkw (guesstimate) with some bolt-on mods. You want to get an N/A breathing as much as you can before you hit things like tyres, sway bars and springs.

Going for big power gains on an N/A R34 is (1) difficult and (2) costly.

[i like beer]

thanks guys, ill start look at ordering the parts over the net then get my mate to install it.what am i looking at paying for decent extrators?? ive been hearing coilover shocks are realy good to get too??

cheers

[baron25]

What everyone has said is spot on pretty much. With your budget, the only real power mods you can do are exhaust and intake. I'd really recommend going on suspension and tyres first though, it'll feel like a whole new car. Then when you get some power mods, you'll get the most out of them.

In reality the best way of getting power from NA skylines is a Four Step Process

1 - Unbolt RB25

2 - Sell RB25

3 - Bolt in VK45DE/VH41DE

4 - Drive Away

Costly to do, but in terms of $/kw, it's the best value upgrade there is - no replacement for displacement!

[dori34]

NOS

[N-DAWG]

HAHA Dori..that smiley next to those 3 letters just made me laugh lol

There's three ways you can go with extractors:

1) DKNE Extractors

2) Coby Extractors

3) Custom

A group buy looks to be in the works at the moment with extractors, so your timing looks to be good

What you spend on extractors will depend on a number of things, including whether you get them HPC coated or heatwrapped. Also DKNE are an aussie extractor, the Coby's come from NZ so there's freight to factor in there, but group buys generally help bring that cost down.

Custom extractors obviously costs a lot more (generally)

[mad082]

exhaust and ecu. if there is money left over then suspension. (look into whether a nistune daughterboard from a turbo 34 can be used in a natro 34 ecu as this will make it much cheaper than a stand alone ecu and give good results in both power and economy)

lowered suspension will only help with handling in the corners. in a straight line you will get better acceleration from stock suspension. this is because it transfers more weight onto the rear wheels giving more grip. this is why drift cars have stiff suspension and drag racers have soft. also stiffer suspension on rough roads can also result is less traction as it will bounce rather than absorb the bumps. so if where you live has crappy roads, chose your suspension carefully.

[N-DAWG]

AFAIK nistune isn't going to work on a N/A R34. If so Dori34 would have been using it for his turbo conversion.

Correct in the suspension side of things. Also the type of tyres will need to be taken into consideration if you're intending on straightline drag racing performance.

Now you've given a budget which is a good start, but we need to know what the car will be used for, what your aim is.

Are you after more power for the street

Intending on dragging

Track days

[mad082]

AFAIK nistune isn't going to work on a N/A R34. If so Dori34 would have been using it for his turbo conversion.

Correct in the suspension side of things. Also the type of tyres will need to be taken into consideration if you're intending on straightline drag racing performance.

Now you've given a budget which is a good start, but we need to know what the car will be used for, what your aim is.

Are you after more power for the street

Intending on dragging

Track days

yeah wasn't sure about it. on the nistune website they have the turbo ecu but no mention of the NA. how different are the ecu pinouts and would it be possible to plug a turbo ecu in and load all the data back on to it? (use the nistune software to retrieve the data from the NA ecu then put it onto the turbo ecu then tune from there)

[N-DAWG]

yeah wasn't sure about it. on the nistune website they have the turbo ecu but no mention of the NA. how different are the ecu pinouts and would it be possible to plug a turbo ecu in and load all the data back on to it? (use the nistune software to retrieve the data from the NA ecu then put it onto the turbo ecu then tune from there)

This thread here covered it in a bit more detail.

http://www.skylinesaustralia.com/forums/Ne....html&st=20

[mad082]

well uras says he uses r34 turbo ecu's with the daughterboard in NA+t's so you would assume that it should be a reasonably simple swap, and then you could just get a daughterboard put into the turbo ecu and load all the NA data onto it. i have pm'd uras and also 666dan for more info on how compatiable the turbo ecu is with the NA loom. but if it works it would be much cheaper than a full ecu, and provide just as good results.

[mid life crisis]

things you need too make a n/a go you need to get more air in so bigger valves port and polish work and cams ..you need a bigger bang in the engine so higher compression ie differnt pistons and or shave the head ..you need to get the exaust flowing more freely so a good set of extractors and free flowing exaust system .

doing any of these without doing all of it will only end up in mild gains . ive built a shitload of 6cyl speedway engines over the yrs and have a fair idea of what it take's .

when you have done these mods take it too a good tuner to get the timing set up right for it too run sweet i think however 3500 wont be enough to get the maxuim power from your engine

cheers dean

[Reggi34dr]

^^ Mad082, if anymore progress has been made let me know. am very interested as your suggestion above would be better in alot of areas over a SAFC2 but more bang for buck than a R34 GT-t PFC.

I have a SAFC2 but am yet to getting around to have it installed and i can't see me spending $1200+ on a apexi PFC.

after re-reading that previous thread Nathan provided the main problem was copying the data off the NA ecu. geez, i hope someone has managed it.

Reggie.

[mad082]

666dan messaged me back saying that it does plug in but you get a few errors due to different sensors, but it could be done.

just thinking about it (the downloading the BIN file issue) how different are the tunes on the NA r33 to the r34 NA, and could you use a r33 one as a base and then just alter it from there?

[dori34]

yeah its only gonna work with alot of fking around.

i would've gone that path, instead i got a emanage ultimate as its much less of a hassle.

most tuners who do nistune (apart from status) assumes the NA R34 ecu is the same as the turbo one so theyy say it will work (i rang 3 authorised nistune dealers in syd and they all said yes even tho they have never done one before)

[MissR34]

if ur willing to hold off on the extractors i might be selling mine in a few months time

[Eug]

check the sticky at the top of the forum... plenty of info there.

[mad082]

i just realised that the OP said he has a NA gt-t. didn't realise that they made naturally aspirated gt-t's, LOL.