top speed

amstrange1 · Post by **amstrange1** » Fri Mar 18, 2005 12:20 am

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

Aphex · Post by **Aphex** » Fri Mar 18, 2005 2:43 pm

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

amstrange1 · Post by **amstrange1** » Fri Mar 18, 2005 5:04 pm

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.

Tahrey1043 · Post by **Tahrey1043** » Sat Mar 19, 2005 4:44 pm

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

) GT

amstrange1 · Post by **amstrange1** » Sat Mar 19, 2005 8:47 pm

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.

86C · Post by **86C** » Sun Mar 20, 2005 9:21 am

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

Tahrey1043 · Post by **Tahrey1043** » Tue Mar 22, 2005 5:46 pm

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

)

amstrange1 · Post by **amstrange1** » Wed Mar 23, 2005 4:30 pm

I bow to your superior experience then Tahrey.

Gareth_GT_Hatch · Post by **Gareth_GT_Hatch** » Wed Mar 23, 2005 4:31 pm

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

Gareth_GT_Hatch · Post by **Gareth_GT_Hatch** » Wed Mar 23, 2005 4:34 pm

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

amstrange1 · Post by **amstrange1** » Wed Mar 23, 2005 4:37 pm

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...

GroovyCarrot · Post by **GroovyCarrot** » Wed Mar 23, 2005 5:21 pm

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!

Fionadilston · Post by **Fionadilston** » Wed Mar 23, 2005 9:42 pm

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 ....

pete69zx · Post by **pete69zx** » Fri Mar 25, 2005 5:54 am

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