My 33gts-t top speed...

[SLY33]

had the car at about 6500rpm in fifth** and the FC controller was saying 226km/hr, so i assume my top speed to be maybe 235ish. I thought it would go much faster than this somehow! I was speaking to a guy in a yellow CV8 monaro number plate VOODOO in S.A. who told me he topped out at 270km/hr, with 204rwkw. Is this possible? if so i imagine its coz of the long legged 6th gear.

Has anyone else got a speed for the top of fifth? (come on you've all been there!)

**under controlled conditions on a private road

also i was surprised at how smooth and stable the car was at this speed.

[VIPERGTSR01]

ive had my R33 at about 200kph in 4th, i read somewhere that the r33 gts25t can make 250kph.

there was a magazine article on top speed of cars and the monaro CV8 did make 270kph

[whatsisname]

I've sat a few lengths behind an R34 GT-R with a 300km/h speedo that was showing close to ~260km/h. Not sure what rev's I was doing as I was more keen on looking down the track.

If you have enough room I'm sure you'd get more than 235km/h Al. How accurate is the speed reading on the FC Controller? Where does it take the signal from?

[tridentt150v]

Had mine to 250kph, and ran out of road, it wasn't flat. AND It was a hot day and I still had the a/c going [forgot to turn it off, and the fan was on the two position, so the a/c was working]. I reckon with the right road and no a/c I might see 260-270.

The 300kph speedo was checked and calibrated only a short while before this, so have to assume it was correct [wheel ratios and sizes may have changed it a bit though, I'm on 17" rims and advan 40zr17 tyres].

[Sydneykid]

Hi guys, 7,000 rpm in 5th gear is 270 kph with 245/45/17 tyres ie; 38.56 kph per 1,000 rpm.

[SLY33]

ok ok.. factor in i have 19inch rims, i think that means that my speedo now under-reads, am i correct? I think also the faster i go, the more it will under read? im not sure.

The rims are a good deal taller than the stock wheel/tyre combo. So in fact i may have been doing ~250 but the FC only showing 226...

i dont know where the FC gets its speed reading from, but it matches the speedo on the dash pretty much exactly.

sydneykid, if you are correct, with my tall wheels at 6500rpm, that wouldve put me close to the 270 mark?!!??

[SMB315]

On the Apexi RSM, i got to 253kmh in 5th at 6150rpm. started to run out of road and plus was a bit paranoid of my rear tyres. i reckon around 165kmh is possible. stock rim size, 215 at the back

[Guest RedLineGTR]

we need a nice air strip....top speed runs

[Sydneykid]

Hi Sly33, tell me the tyre brand and size and I can tell you the kph per thousand rpm.

[Duncan]

or just drive ur car up to NT and hoon along the Stuart Hwy to your heart's content

Mine tops out at 193 according to the GPS speedo on 265/30 18s. But that *might* be the speed limiter.....about 4500rpm in 5th...

BTW, by my calc 7000 in 5th is 285, Sydneykid is 5th gear 0.694? and diff 4.11:1?

Oh, and make sure you pick a really long airstrip, 800m is nowhere near enough, so Goulburn is out

[Elithrar]

MOTOR and Wheels use Avalon...

[SLY33]

hi sydneykid!

im using yokohama s306's. 245/35/19 front 275/30/19 rear.

[ed]

I got my RSM to show 265km/hr.

I don't remember the revs but it was def in 5th gear.

Not sure if it was accurate though. (34 GTT)

[GTRgeoff]

we need a nice air strip....top speed runs

I think the Dutton rally uses avalon, good way to find out.....enter the rally.