Jump to content
SAU Community

Recommended Posts

32 and 33 GT-Rs have the same overall gearing, with the only difference being the wheels, the 33 having a slightly larger overall diameter using 17s.

Based on old magazine 'in-gear' speeds, 32s are capable of just over 310km/h in 5th@8000rpm, and the 33 would be a little more. Not that either have enough power potential on factory turbos to do that, though.

Link to comment
https://www.sau.com.au/forums/topic/143332-gtr-top-speed/#findComment-2675766
Share on other sites

How much power would it take to push 300-310km/h given enough road? Also out of curiosity, how many km/h can roughly 300rwkw take me to with the appropriate gearing?

Aerodynamic drag on a vehicle increases as a cube of the % speed increase, so the extra power required to reach a certain speed increases in proportion to that.

32 GT-Rs do about 265km/h stock, so 310 would be near as a 17% increase, so 1.17^3= 1.602. Which means you would need around 60% more power than factory to do 310km/h- Assuming that 32's have 310hp standard (common realistic figure), that would mean you need at least 495hp.

Baseline rwkW figure for standard BNR32 is 170rwkW im told, so 300 would be a 76.5% increase, yeilding a 20.85% increase in top speed, or (with appropriate gearing/rev limit increase), around 320km\h.

Hope this helps :verymad:

Link to comment
https://www.sau.com.au/forums/topic/143332-gtr-top-speed/#findComment-2676293
Share on other sites

R32 GTR....270 stock......Doubt it.

I reckon 240 would be a more realistic.....mines modified (315hp@wheels) and I'd rate its top speed realistically in the region of 240-250kmh.

When mine had 250rwkw, i was hitting 250k/h with no trouble, just running out of track, it was still pulling i just had to slow down for the corner.

Link to comment
https://www.sau.com.au/forums/topic/143332-gtr-top-speed/#findComment-2678179
Share on other sites

When mine had 250rwkw, i was hitting 250k/h with no trouble, just running out of track, it was still pulling i just had to slow down for the corner.

Well thats about 30rwKW more than mine so sounds about right :P

Mine is about 50rwKW over standard so i'm guessin the standard GTR is going to need a whole lot of road to hit 240-250kmh....i'd say it'd get to 220kmh fairly quickly but would struggle from then on.

Personally I judge top speed on what I can hit easily and quickly, not what it'll eventually hit if I keep my foot mashed to the floor for minutes on end... :happy:

Link to comment
https://www.sau.com.au/forums/topic/143332-gtr-top-speed/#findComment-2678203
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Yeh I think i'll message an old contact i had for ages that manages his own tyre shop now.. n tell him what i want n work with him before ordering..  Got this 17x9 +30 Driftteks on 245/45/17 PSR Drag Radials on the rear.. They fit well - for your reference in future - Rear guards  have been lipped in & minimal to non flaring of the rear Gaurds.    
    • If only it were that easy! I also needed to remove seats, shocks, brake calipers, send my car through a fence, and use measuring and ended up guessing because I didn't remove seats, shocks and brake calipers. It can be hard sometimes Can be a little more complex than 'just measure' if you want to truly measure the entire wheel through all of it's suspension travel. But if you aren't going for every last mm then yeah, you can check the space you currently have and guesstimate.
    • If you own a car, and it has wheels on it, and you know the offset of those wheels, and you have a measuring device, you have everything you need to work out if other wheels will fit.
    • Will this fit? but they are staggered set - RAYS 57DR SEMI GLOSS BLACK 18x8.5 +37 | 18x9.5 +38 5-114.3 STAGGERED SET   or If no go could just get a set 4's wheels of 18x8.5 +37 5-114.3 - would i run 8.5's 235s up front n 245's at the back if I do?   Thanks.        
    • Put a clamp on your return line. I have a feeling it's sucking air, and introducing bubbles to your fuel. With a lot of fuel, less problematic. I'd honestly be redoing all the lines in the tank and clamps on everything.   Also, you've given two different answers to the same question: Asked if being followed by the police you could get down to use the whole tank, you said yes you could, so long as you keep off boost. However, you then followed this up that free revving, it would also cause the issues. I'm doubting free revving is enough to make any noticeable boost on what is likely a decent sized turbo.   So now I have to ask, can you actually drive it lightly and use all the fuel, or does it break up even free revving? Also, have you put a fuel pressure gauge on it? Can you hear the pump change noise at all when you're having this issue?
×
×
  • Create New...