skyline r344 gtt 500hp

[stranger12]

skyline r344 gtt 500hp

Hi Guys,

I am finally getting to tune my skyline and have a lot of work to do by researching etc

I want to gain around 500 hp form my skyline which is R34 GTT. I have done a compression testing and all cylinders where the same

I have seen posts people saying the head gasket need to be changed but also other posts saying it is fine for up to 600

what do you think ?

My budget is around 5-6k in pounds so 10k in AU dollor

I am going overkill by buying top of the range products even if not needed in case I decide to go above 500

my question is what psi would I be pushing at 500hp ? 20 or more?

so far here is what I think i should buy

1. Fuel pump also not sure of the model and liter capacity. I need to research it
2. a Turbo
3. Possible a high mount manifold
4. clutch
5. gtr brembo caliper
6. link ecu with lunch control
7. 1000 cc injectors
8. boost controller
9.remap
10. get the timing spot on before doing any remaps.
11.intercooler
do I need to change anything else on fuel system ?

 

[Dose Pipe Sutututu]

You're missing stuff like 

Twin gates, twin scroll manifold, twin scroll turbo, ARP head studs, decent coil packs, and a hectic dose pipe. Then followed by a decent LSD, coilovers, hicas eliminator kit, traction rods, subframe bushes, etc.

No point having oodles of power that you can put down then getting toasted by a Golf GTI. 

[GTSBoy]

Also, the other big question is....are you expecting 500HP at the wheels or at the engine?

[ERO54N]

Have you considered a full exhaust?

[Murray_Calavera]

Suppose someone has to ask this, why are you after 500 hp?

[stranger12]

That is the kind of power i am looking for at flywheel

 

i have the spitfire coils , decent coilover.

 

what do you mean by twi gates and twin scroll?

[GTSBoy]

The path to single turbo happiness on RB engines is for the turbine housing to be twin scroll (for best response) and therefore you need to match the manifold to it (ie, it needs to be split pulse) and if all of that is split pulse/twin scroll then to finish it off and do it right you need twin external wastegates.

500 engine HP is only about 280-300 rwkW, which is a walk in the park for a Neo 25DET.  Head studs as Johnny said.  No high mount manifold unless you feel the need to show it off.  The stock manifold will shit it in.  But if you do go the full split manifold and twin gates then high or low mount to whatever suits your taste/needs.

Otherwise your list is fine, + the rest of Johnny's list.

[stranger12]

Thanks

 

280 at rear seems quite low

 

i think we looking at 330ish at rw which is around 389at flywheel

 

what will be your boost at that power?

would you change ur gasket?

 

seen manifolds costing 2k in aus dollor, isn't that high for a manifold?

[JustinP]

Lunch control... All you need is willpower, no need for a new ECU.

[GTSBoy]

38 minutes ago, stranger12 said:

Thanks

280 at rear seems quite low

i think we looking at 330ish at rw which is around 389at flywheel

what will be your boost at that power?

would you change ur gasket?

seen manifolds costing 2k in aus dollor, isn't that high for a manifold?

 

Conversion from HP to kw x 0.75  -> 500 HP is 375kW at the engine.  Conventional "conversion" from flywheel kW (or HP, it doesn't matter) to rwkW on Australian Dyno Dynamics dynos is to multiply by 0.75 again -> 280 rwkW.  That 25% "loss" can be a little more than really happens, so call it a range from 280 to 300 rwkW.

How much boost depends on how big the turbo you're looking at using is.  A larger turbo not working as hard (and with a bigger back end) will use less boost.....but of course be less responsive.  Assuming you're looking to "optimise" at the power level you're talking about, then you're looking at turbos that need about 20 psi to make that sort of power.

I wouldn't change the head gasket on a Neo at 300rwkW.  Would contemplate head studs, but plenty have run for a loooong time at that power level with the originals.

A good exhaust manifold should cost at least $1500.  There's nothing unusual about spending $2k for something that is well made with a good track record of not falling apart.  But again, at the power level you're talking about, it is doable on the factory manifold.  Save the coin and spend it elsewhere.

[KiwiRS4T]

$10k is not going to get you what you need for a big power engine (starting with forged fully balanced components) so just concentrate your mind on the essentials for a 350KW  result as advised above. Save some money for tyres,suspension, brakes, clutch...LSD

[stranger12]

Well what i said above was only engine

i have already spent 2.5k on 275 falken and 19 inch alloys

 

love it

 

i may forge it later hence why i am getting a 1000 cc injectors which I understand it is good for up to 1k hp

re turbo with big turbos and less boost, will you have a significant lag and sudden kick?

 

 

[Murray_Calavera]

Subscribed. I want to see the 1000 hp engine running 1000cc injectors

[Dale FZ1]

There's a wealth of information in the RB25 dyno section here about what people have achieved with various combinations.

It's all well and good wanting a hp number, but you've got to be clear what the performance needs are, application the car is being used for etc.  eg. you "should" comfortably achieve 300-350rwkW with either a GTX3076 or a GTX3576, or a TDO6SL-25G or a TDO6H-25G. 

Bigger turbine setup in both cases would probably shift the best torque range upwards by between 500-1000rpm.  Not good for 100 percent street, maybe not a problem for 100 percent track if the engine really doesn't have to perform under 4000rpm.

Then the split pulse, and fuel spec (E85 has become very popular here in Aus) are other variables to consider as mentioned.

If you're new to SAU, take the time to trawl the forum - it's a well worn path and the same questions have been kicked around for a long time.

[Dose Pipe Sutututu]

Make sure you get a good dose pipe, also GTX turbos don't dose well due to their 11 blade compressor wheel design.

6+6 and 7+7 blade designs will dose very well. Using an alloy pipe over a stainless steel pipe will increase dose.

Anyhow,  running wider tyres doesn't always mean more grip. You're essentially reducing the contact patch pressure. 

[jet_r31]

18 hours ago, Murray_Calavera said:

Subscribed. I want to see the 1000 hp engine running 1000cc injectors

Well back in the old days.....

Cheers

Darren

[stranger12]

Just starting to read these again and order parts

Got distracted with work so starting fresh again

Re reading through posts and sau forum , i think gt30 is the turbo i need

Can you get any turbo in single or twin scroll?

Is that good option with a 80% street use?

I want around 400 hp rear wheel or 500 flywheel

[Dose Pipe Sutututu]

If budget permits, twin scroll, twin gates, divided rear housing and a EFR7670.

Or if you're a bit poor (like most Skyline owners) a GTX3576 would be a good pick.

Or if you're broke as fek (like me) get a HyperGear SS2 or G3SAT and weld a gate off the manifold.

All above options will give you that magical 500hp to brag (when on e85 or running water/meth)

[stranger12]

I am not very familiar with e85 , did look at it while ago but can't remember what it was and seems like too much hassle for daily driving

 

I did some reasearch on twin scroll and it seems to be best of both top end and bottom end and making turbo lag go away.

is the impact significant enough to justify the cost?

I guess the other question is do all turbos have single and twin scroll ?

I am doing some research on price ..

 

I am tempted to get a f10 m5 and put this tuning to bed for a while as want to take my time building it . I will be doing all of the work myself.

in the uk 6boost is well known and doesn't seem very cheap at 1.2k £ for the twin scroll

 

http://www.6boost.eu/6boost-rb26-nissan-skyline-r32-r33-r34-gtr-t4-twin-scroll-manifold-1641.html

Edited December 23, 2016 by stranger12

[KiwiRS4T]

If you can afford an F10 M5 buy one and sell your Skyline to someone who can build it up themselves. If you pay people to do all the mods you are contemplating it will cost you an arm and a leg and it will never be as good as the M5. If you try to do it yourself it looks like it will be a costly learning exercise with an uncertain outcome.