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140 on an 8P?! That's crazy; like 6700rpm in 5th! Mind you - I've done 7k in 5th on an 8N 'box...

8p, yea loving my NZ at the moment!!!

Need to ditch this 8N I've got in my car, virtually identical to an 8P - though very slightly shorter in each gear. Ratios are just too low for my motor, needs taller ratios so I can use the torque.

nah 140 on an 8P is pretty much at the CL 6500 redline
you might see 145-150 out of a (HEAVILY TUNED ) GT

Tahrey1043 wrote:nah 140 on an 8P is pretty much at the CL 6500 redline

Think you'll find it's closer to 6700rpm like I said! Tried my damnedest to get there with my original CL engine and 'box - even with GT injection I only managed 115ish (120+ if you count the time I found a big hill...).

8P or an 8N in a G40 is a different matter. Top speed is determined with how much you're willing to overrev your G-lader by. Sitting at 6000rpm+ for a long time isn't lader friendly, let alone trying top speed runs. Proper G40 'box means bending the speedo needle on the reset pin on 120mph clocks at 6500rpm ish - can't quite get that far with 8N 'box on as I decided 7k was plenty of revs.

hardhitter wrote:I imagine the NZ is quite capeable as it's injection system is fairly good so with the right box and a cam it would keep on pulling.

It most certainly does!

Although I think my engine is now a bit 'over the hill', in it's prime, the best speeds it achieved was 119 mph in 4th(on the limiter, damn road rage!) and 131mph in 5th, after which I chickened out
Probably had the wind behind me to get those speeds

just have to agree to disagree mate, that sounds too low geared for the P .... well, on standard tyres anyway!
(not by very much at all, granted, but by some)

tho maybe not for the N, if it's got a more frantic differential

(whatever )

I bow to your superior experience then Tahrey.

depends what your tyre proflie was. the difference between 145/80 and 155/70 can make a fair bit of difference at 6.5K in top

spreadsheet says:

142 at 6500 with 145/80/13 tyres (146 at 6700)
138.5 at 6500 with 155/70/13 tyres (142.7 at 6700)

lol at andy. Just come out and say it!

Tahrey is not your

tahrey1043 wrote:mate

I did it in practice with 185/60 R13 and it seemed to tally close enough to Mark's spreadsheet using 175/60 R13, but the tyre size will make a difference - I forget not having used the 145/80R13 for so long!

Now they'd be interesting doing 140ish on...

amstrange1 wrote:I forget not having used the 145/80R13 for so long!

Now they'd be interesting doing 140ish on...

I can't think of a more scary experience!

pete69zx wrote:
You see... the thing with the 1272cc CL engine is, its a low compression engine (relatively speaking)... so its much nippier around town through the gears, but once you are on the open road, its a slug:-(


Just my opinion anyways (so dont all shoot me at once:-P)

so would you say the 1043cc was as good on the open road as the 1272...not that I ever see me and my polo separating for a verrrrry long time ...just interested as I know she is a superior beast ....

Fionadilston wrote:

pete69zx wrote:
You see... the thing with the 1272cc CL engine is, its a low compression engine (relatively speaking)... so its much nippier around town through the gears, but once you are on the open road, its a slug:-(


Just my opinion anyways (so dont all shoot me at once:-P)

so would you say the 1043cc was as good on the open road as the 1272...not that I ever see me and my polo separating for a verrrrry long time ...just interested as I know she is a superior beast ....

Hard to say really, as i have no experience of a 1043cc Polio

I gues if the 1043cc was using a 4 speed gearbox then quite possibly yes