400 Rwkw

[V8skylineMAN]

As some of you know my beloved V8skyline is dead........well not so much the car but the engine.

i have a dream, and that dream is to get my car into the top 10 SAU Drag times

therefore i need a very low 10 second pass,

the car will shortly be receiving a 10 pt rollcage and r33 brakes

it will have s13 coilovers and s14 hubs to enable me to fit these brakes.

i am thinking of either an rb25det or an rb26dett. i know wich one i prefer but well see how $$ goes after the other work is complete

What i want to know is 400RWKW enough for these quater miles times and what work does each engine need to have done to acheive this power....i realise the 26 needs less work to do it but it also costs more to begin with.

[32vspecII]

i think even with the high costs of buying a rb26 your going to spend lots and lots on a 25 to get 400rwkw . a full comprehensive rebuild will be required . If you can find a rb26 in good nick (and thats going to be the problem) you should see 350-400rwkw with a pair of low mount turbos , cams and the usual bolt on mods .

[benm]

By "SAU Top 10" i'm guessing you mean this in which case Pos #12 is running standard RB25 internals and a standard RB25 Turbo (with NOS) so you won't need 400rwkw to get in the top 10 if that is your sole aim.

[predator]

how much does that thing weigh? that will dictate how much power you'll need to get a 10second pass.

[Sydneykid]

My suggestion is RB31DET:cheers:

[japtaxi]

if you are only building it to do 1/4mile, I dont see why you cant do 3ltr with reasonable sized turbo and auto+trans brake to get the power you want easily. Hope you sort out traction issue first.

[V8skylineMAN]

It wont be for drags, in fact i wont do a lot of racing with it at all...maybe every few months go to a street meet...and the odd bit of drift here and there(on a track of course) car WILL be a daily driver no matter how much of a pain in the a55 it is to drive....mainly cos I'm an idiot.

Only a guess but i would say that it weighs 1000-1100 kgs in full trim.

dash, front race seats and cage will be the only interior in it when complete, so it may JUST slip under the 1000 mark

[pnblight]

Then if you want it to daily drive the rb26dett is the best option in my opinion

As i drive a 400kwrw gtr most days

pfc & avcr apexi and hand controller

garrett 320hp ball bearing turbos

tomei 260 9.15 cams and adj wheels

700cc injectors

rb20 afms

custom exhaust and inlet

525rwhp 20psi (last 1/4 ~490hp ran 11.3 125mph)

the rest std

so that sort of power isnt hard to exact from rb26dett but i am about to change out rb20afms as there limit is about 540rwhp and am going to put forged rods and pistons just for peace of mind .Plus i'm doing some sump mods for track use.

as for a low 10 1/4 will come down to weight and setup to gain suck a time not just power

[TIMMMAYYY]

400rwkw in a gtr and only 125mph.

doesn't add up...

[nmcmahon83]

how does power have a direct relationship to speed?

[V8skylineMAN]

He is saying that over a quarter mile a GT-R with 400 Kw should be doing a higher speed through the traps.

Maybe it bogged down too much at the start, or he backed off the throttle too early....

[pnblight]

Well when i ran it gear changes and starts were the biggest issues but even tho it's not far off wot a lot of the high 400hp cars will run in mph and please dont forget its awd not 2 wd a 2wd drive will run a slightly fast mph per hp due to weight and rotating weight .

What mph would you exspect from a 490rwhp AWD?

[BU5TER]

my R33 gtst with 330rwkw ran 128mph

[pnblight]

Well Leewah ran 132hp with 597rwhp it's only 7mph more for a 107 hp

[BU5TER]

Peter its to hard to really compare mph at this point of modifications as driver, launch, sticky strip and average power etc all make to many variables

[pnblight]

very true cant agree more and the simple mph to hp only works when comparing apples with apples ie awd with awd and street tyres with street tyres my orginal post to show that its not very hard or hughly $$ to get 400rwhp from a rb26 and i simply post wot i got from my one trip to the strip