Top Speed of r33gtst

[Col-GTSX]

Install a flux capacitor and you only need 87mph to travel through time....

[Col-GTSX]

Opps.... Wrong topic....

Col takes the pi$$.... :headspin:

[benm]

Benm,

 

So the R33 N/A ~150kw will crack 250km/h..

 

I don't think it would.

I am unsure about the N/A but I can assure you that a 250hp (186rwkw) RB25DET is very capable of pulling 250km/h (and still pulling beyond that altho quickly running out of rpm before the rev limiter).

Lets just say I have a friend that has a flat private driveway to his house/property with plenty of run-off room where hitting 250+ in an RB25DET is very achievable.

[Bazelinez]

That's a speedo indicated speed of 250, so its more like 230+-.....

[Duncan]

Benm,

So the R33 N/A ~150kw will crack 250km/h..

I don't think it would.

well I know I also took a stock pulsar over 200 with

but I think things get much harder over 200, thats a lot of air to push out of the way.

A dyno can only tell you the wheel speed of the car at the rev limit in 5th, there is no way you can max out a standard car no matter how long the road

[benm]

That's a speedo indicated speed of 250, so its more like 230+-.....

uh?

[Col-GTSX]

yeah 10km's of straight road (under closed race conditions) should be enough to blow your motor.....

[Col-GTSX]

But as in back to the future you only need a car park.... LOL :wassup:

Leaving tyre marks that burn is pretty col tho.... Imagine doing a liny with flaming lines.... Ummmm :flamed:

[SeriesIIGTST]

uh?

I agree with Bazelinez, the speedo and real world speed do tend to be out slightly. I know on the private road i use, my PFC reads 180 as my speedo nudges the little "HICAS" light off the end of my 180km/h stock speedo. at 200km/h on the PFC, the needle was just past the HICAS light.

[Duncan]

uh?

yeah for sure, every speedo I checked against the gps has been around 10+ optimistic....so 250 on a speedo is no more than 225...

[INASNT]

I got to around 220km/h down the front straight of sandown then backed off at the 200 foot mark running around 250kw@wheels.

You will need a very long straight road to get a NA RB25DE to anywhere near

250 km/h

[benm]

yeah for sure, every speedo I checked against the gps has been around 10+ optimistic....so 250 on a speedo is no more than 225...

So would an RSM be more accurate?

[Duncan]

well thats an interesting question.....personally I'm surprised a PowerFC would read different to a speedo since they both use the same sensor in the gearbox :confused: I think the main issue is the rolling diameter not being exactly right for the speedo

IMHO GPS or good accelerometers are the only accurate way

[SeriesIIGTST]

maybe the PFC reads different to the speedo to due the conversion of electronic signal to an analogue needle vs the PFC digital display. *just guessing though*

[Cubes]

Benm,

I miss-understood you.

...and im saying you dont even need 250hp to crack 250km/h (and you dont even need 7,000+ rpm).

You then said your friend with a Rb25DET (which is 250hp) cracked 250km/h.

The N/A won't cut it. 250km/h is just too much air to push out the road.

This friends R33.. Was it dead stock? or had the usual exhaust?

How did it go towards around 235-250km/h. Torque would have been dropping off at that point so I would have to assume the last 10km/h were slowish.

Pulling hard is subjective.

Honestly, I really do find it hard to believe a stock R33 (including ride height) would zip up to 250km/h without a struggle, think it would really be pushed to get there.

But its all I think.

I believe 230km/h is a fairly easy target but after that things slow down quite a lot and takes quite a bit more time to get there.

[gatty]

Col-GTSX-

can you please just post once per thread, a tad annoying seeing 2 posts by you mins in between every fookin thread

and i rekcon my NA might get to 250 - down a very very very steap hill

[KRiMiNaL]

I did 240 comfortably with only exhaust and air filter.

How can u get 240 with exhaust and airfilter wat bout the ecu it doesnt allow that speed correct me if im wrong?

[dangerous_daveo]

Well if a little old corolla can do 8500rpm in 5th (3SGTE, but pretty much stock) then I think a skyline could do better.

BTW, working it back and allowing for the speedo being out, the rolla was doing anywhere from 270kmh+ (sits on about 2800rpm in 5th at 100kmh, but we know its more like 90kmh. So if anyone wants to do the maths)

[race_snooze]

I have some bits to add to this all done in safety offcourse. I have an apexi digital speedo for my r33 with some small mods to the car. At about 100 on the standard clock but the apexi is reading 105 and the gap increaces slightly the faster I go, but the top speed i have done in safe envronment was 260 on the apexi.

[performance-wise]

My power fc comander reads less than my stock speedo.

For example - 100kmh on speedo reads 94kmh on commander.

Which is the correct readout?

Be good to know, especially for cameras and radar situations.