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Getting 200kw on a GTR at all 4 wheels

Ethan_R32
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OZ GTR35 Veteran

OZ GTR35

Posted
Posted

I don’t know how some people can get 200Kw at 4 wheels with Very light mods. Before I blew the GTR up, I had quite a few mods done, and only 2 weeks before the EC drive day I went to Croydon’s and did a dyno, 194Kw @ all 4.

If you have a R32 and you can switch to rear wheels only, 200Kw is achievable because of the lower losses. We hype up our KW regularly but ready I don’t think we get as much as we say we do.

Look at it this way.

On a GTR (R33) in 4WD you will loose about 40-45% of power from fly to wheels. Rear wheel only say about 25-30%. So!

350KW @ Fly - 42.5% drive train looses is 201Kw @4W

350KW @ Fly converted to horse's is 500HP.

The injectors / turbo's /airflow meter and fuel system are at its limits when it produces 500HP. So 200Kw is not as easy as it seams.

My 194Kw was with.

720mm x 360mm x 72mm FMIC

Apexi PFC

Bleed valve to 16LB

Steel shaft/wheel garret rebuilt turbo's

3" nismo exhaust and headers

Standard Box with high flow filter

I do have one reason why my run was low, my Platinum plugs were delaminated and my air filter was 20K Km old. I have had as high as 210Kw.

Since I blew the engine up I have a few other mods which will be doing.

Variable cams, dump pipe, high flowed 47.5 mm compressor turbo wheels, 550cc injectors, Apexi boost up kit to 17lb. I will be very happy if I produce 250Wk @all 4 which is about 600HP.

I hope this helps Ethan, and I open this to the floor for comment.

Guest GregGTR

Guest GregGTR

Posted
Posted

Oz GTR97V, I have to disagree with you here.... I believe that with a good turbo(s) back exhaust (3"+), twin pod air filters, power FC and good fuel you should be able to get to 200 4WKW. Standard turbos are Ok upto 14psi, and the 440cc injectors and pump can cope with ~16psi, and if you want a bit more, use ADJ CAM gears, they work wonders on RB26 motors.

G>

OZ GTR35 Veteran

OZ GTR35

Posted
Posted

Agreed, but replacing turbos, is no what I would call a "Basic Mod". To get Big HP from a GTR you need bigger turbo's.

Boost, exhaust, and pods are not enough to get a GTR much above 150Kw @4W on a GTR.

Mr Miagi Collaborator

Mr Miagi

Posted
Posted

It is very easy to get caught up with big dyno figures (or low for that matter) but the relality is this-

Dyno's, particullaly chassis dyno's can vary greatly from one dyno to another.

I have seen variations with the same car of up to 30kw.

Same day, same car, same fuel batch - 3 different dyno's (long story)

What you should be more interested in is the percentage increase (or decreases) of the before and after modifications dyno run/tune.

Just Jap Racing Grand Master

Just Jap Racing

Posted
Posted

i use this car for Targa Tasmainia every year the figures are correct it has been on three diffrent dynos in the last three years

Steve

Justjap

http://www.justjap.com

OZ GTR35 Veteran

OZ GTR35

Posted
Posted

Steve,

I assume your Turbo's were steel wheeled by Garrett? I just had mine redone due to the dropping of my inlet valve on number 3. (P.S. thanks for the short engine)

Various people have told me that the turbo's are good for 20Lb but talking to the guy in Garrett who rebuilds them he said they are only good for 3lb above stock standard boost on a GTR. That makes about 13Lb. What are your thoughts on the life span at 1.3 Bar? I ran 1.1 bar for 70,000Km and when he pulled them apart, except for the damage to the exhaust wheel he said they were in good condition.

vspecv Proficient

vspecv

Posted
Posted
Originally posted by Oz GTR97V

Agreed, but replacing turbos, is no what I would call a "Basic Mod". To get Big HP from a GTR you need bigger turbo's.

Boost, exhaust, and pods are not enough to get a GTR much above 150Kw @4W on a GTR.

hi oz gtr,get yourself a new tuner.

heres an example.

r32gtr

trust cooler,16psi,standard computer,exhaust,airfilters.

231 kw rear wheels.ran 11.8 at 121mph

i had similar on a r33gtr with power fc,made 255kw@4.

on 2 different dyno dynamics dyno.one was 255kw other was 251kw.

after being sold was redynoed on different dyno by new owner and made 254kw.

OZ GTR35 Veteran

OZ GTR35

Posted
Posted

Vspec,

I actually used Karl, from down your way. We went to the tafe dyno and that is where we clocked the 210Kw. With the 440cc injectors they were 95% maxed and the fuel ratio was just right. I will be down in melb in the next couple of months, let me know who your tuner is and I will let him play with the car when Im down.

turbomad Community Regular

turbomad

Posted
Posted

How much kw does a stock GTR have @ all 4 wheels? I'm guessing it would be less than 177, which is why I'm a little confused why EthanR33 is selling his car for one thats older, and has less power than the one he's currently got? Is it the 4 wheel traction your after or just the fact you WANT to own a GTR? I'm not having a go I'm just curious?

Silver-Arrowz Grand Master

Silver-Arrowz

Posted
Posted
Originally posted by turbomad

How much kw does a stock GTR have @ all 4 wheels? I'm guessing it would be less than 177, which is why I'm a little confused why EthanR33 is selling his car for one thats older, and has less power than the one he's currently got? Is it the 4 wheel traction your after or just the fact you WANT to own a GTR? I'm not having a go I'm just curious?

I guess it's the potential that it offers.

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