1 registered members (Rustydog),
286
guests, and 3
spiders. |
Key:
Admin,
Global Mod,
Mod
|
|
Forums69
Topics113,635
Posts1,341,406
Members1,814
|
Most Online731 Jan 14th, 2020
|
|
|
What's the top speed of an NA?
#139288
26/06/2006 13:35
26/06/2006 13:35
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
Unmodified normal NA, what's the official top speed and what have people had out of them? Just curious
|
|
|
Re: What's the top speed of an NA?
#139289
26/06/2006 13:45
26/06/2006 13:45
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
i think its about 140 from what Ste said ages ago before he left the forum.
TO be honest after driving one i dont think its geared for much more either bobbs.
|
|
|
Re: What's the top speed of an NA?
#139290
26/06/2006 13:50
26/06/2006 13:50
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
Not worried about that, just wondered how close I'd come to it
|
|
|
Re: What's the top speed of an NA?
#139291
26/06/2006 13:56
26/06/2006 13:56
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
I think it's 130 Not that I've been within 40 mph of that ...
|
|
|
Re: What's the top speed of an NA?
#139292
26/06/2006 13:58
26/06/2006 13:58
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
Not 130 unless my speedo out
|
|
|
Re: What's the top speed of an NA?
#139293
26/06/2006 14:01
26/06/2006 14:01
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
Probably is as on mine at the top end it was out by about 5mph...
|
|
|
Re: What's the top speed of an NA?
#139295
26/06/2006 15:20
26/06/2006 15:20
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
Quote:
Not 130 unless my speedo out
Don't most speedos overread by around 10%
|
|
|
Re: What's the top speed of an NA?
#139296
26/06/2006 15:24
26/06/2006 15:24
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
Im surprised you got to 90 Vics No offence but i think on the VIS models could even get near that speed as i dont think the gearing is upto it...
|
|
|
Re: What's the top speed of an NA?
#139298
26/06/2006 15:47
26/06/2006 15:47
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
If we being funny, my mates 2.0 litre mondy was clocked at 140 on the gps.
Ross
|
|
|
Re: What's the top speed of an NA?
#139299
26/06/2006 15:49
26/06/2006 15:49
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
pah, 140+ as the speedo stopped but the revskept rising ni my 19 16v na Also im sure nigels old 355 topped out a bit higher lol but back on topic of 16v and 20v NA's please :P
|
|
|
Re: What's the top speed of an NA?
#139300
26/06/2006 15:53
26/06/2006 15:53
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
Lol. Thanks for that mod KP!!!! Is 140 about the limit for a coupe? Must be gearing as there is loads of cars that knock about the same speed out, but dont have the coupes AMAZINGLY good front end shape for top speed! Ross
|
|
|
Re: What's the top speed of an NA?
#139301
26/06/2006 16:16
26/06/2006 16:16
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
Its gearing as they are geared to be at their best economical performance at a certain rev, this was only changed for the fancy 6 speeders as i dont think fiat were that bothered about MPG for them
|
|
|
Re: What's the top speed of an NA?
#139303
26/06/2006 16:36
26/06/2006 16:36
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
I can do that in 4th and then some Whats the italian speed limit again and what rpm does the coop sit at in top gear at this speed?
|
|
|
Re: What's the top speed of an NA?
#139304
26/06/2006 17:20
26/06/2006 17:20
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
i've touched 140 (on a track of course) & i gave up before the car but i do have a poweflow exhaust & chip
|
|
|
Re: What's the top speed of an NA?
#139305
26/06/2006 18:44
26/06/2006 18:44
|
Joined: Dec 2005
Posts: 33,568 Berlin
barnacle
Club Member 18 - ex-Minister without Portfolio
|
Club Member 18 - ex-Minister without Portfolio
Forum Demigod
Joined: Dec 2005
Posts: 33,568
Berlin
|
KP, you have 52% extra power available, so should expect a (drag limited) top speed about 23% higher. And lo and behold, it turns out that if an unmodified 143bhp 16v will do 129mph, an unmodified 220bhp 20vt ought to do 158mph. Does that sound about right? Neil
Last edited by barnacle; 26/06/2006 18:44.
|
|
|
Re: What's the top speed of an NA?
#139306
26/06/2006 19:48
26/06/2006 19:48
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
the gearing on a 20vt is different to the NA's though. it really is geared to cruising at a lower RPM than an NA from my driving experience of a few coops now.
|
|
|
Re: What's the top speed of an NA?
#139307
26/06/2006 19:50
26/06/2006 19:50
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
I've had over 158 so that sounds about right Neil. Im amazwwed that you worked that out!!
ROss
|
|
|
Re: What's the top speed of an NA?
#139308
26/06/2006 19:52
26/06/2006 19:52
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
Just had mine upto 128 (seen through gps) But have had the car up to 135 (indicated on speedo)
Have to say that my speedo is pretty accurate all the way to 110 (then i stopped looking at the gps and started concentrating on what was ahead of me!
|
|
|
Re: What's the top speed of an NA?
#139309
26/06/2006 19:55
26/06/2006 19:55
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
Also is this self powered as i reckon a working 20vt could tow an NA beyond its top speed And yip our barnacle is a smart one, he made the widgit for starts
|
|
|
Re: What's the top speed of an NA?
#139310
26/06/2006 19:55
26/06/2006 19:55
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
I've hit 120 before running out of road. RPM was about 5500. Limiter kicks in at about 6500 but I wouldn't fancy pushing it that high - it took long enough to get to 120! Quote:
i've touched 140 (on a track of course) & i gave up before the car but i do have a poweflow exhaust & chip
I didn't think mods made a difference to top speed?
Last edited by Glenn; 26/06/2006 19:58.
|
|
|
Re: What's the top speed of an NA?
#139312
26/06/2006 20:47
26/06/2006 20:47
|
Joined: Dec 2005
Posts: 33,568 Berlin
barnacle
Club Member 18 - ex-Minister without Portfolio
|
Club Member 18 - ex-Minister without Portfolio
Forum Demigod
Joined: Dec 2005
Posts: 33,568
Berlin
|
KP, whether or not the 20vt could tow an NA beyond its tops speed depends on the drag of the two cars, not the weight of the one being towed. I doubt it, somehow, unless they're *very very* close together. Glenn, the only thing that affects top speed is whether the engine can turn fast enough. The ECU cuts out the engine at around 6k8 - so in theory, you can still be pushing at 147 mph, provided the engine's getting enough petrol. But aerodynamic drag - which is the main affect on top speed - is proportional to the square of the speed, so as 143bhp gives you 129mph, you'd need 147/129 squared times 143bhp to get there: approximately 185bhp. If you can get that from an NA 16v at only 6800 revs I'll be very impressed; you might try gas flowing the head, losing the cat, changing the cams to something vicious... It's also why I was sceptical about Stephen's claims of 147mph... by same calculation, 140mph needs 168 bhp. The 20v is rated at 155bhp IIRC, so an extra fifteen or so horses is more achievable. And just for the hell of it - a 200mph coupe's going to need something on the order of 350bhp - but that's ignoring other friction losses (gearbox, diff, and tyres, mostly) and the fact that the gearing needs rebuilding to turn the wheels that fast and you'd need a lot of aerodynamic work to keep it stable (and that eats power, too) - and bear in mind that in *all* the cases we've discussed, it's going to need that power available at maximum revs, which turbo cars don't tend to do. So for all practical effects - since we know there are cars out there with that sort of power that *won't* do 200mph - most of the mods are tweaked for in-gear acceleration, not top end speed. Neil
|
|
|
Re: What's the top speed of an NA?
#139313
26/06/2006 21:27
26/06/2006 21:27
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
Towed cars arent that far behind so i think they would slipstream a fair bit as well...
I thought Matt was geting closer in South africa to 200mph?? I reckon at least 400bhp+ would be needed to get there though with tyres and gearbox's and all taken into effect and god only knows the aerodynamics as well!
|
|
|
Re: What's the top speed of an NA?
#139315
26/06/2006 21:52
26/06/2006 21:52
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
thats bloody quick and would upset some porkas and other cars need i say, was he pushing 350 or thereabouts? im sure he had forged bits as well as customer coolers and stuff as well but found the front end got light and had to ease off if i remember?? has anyone heard from him since the forum died?
|
|
|
Re: What's the top speed of an NA?
#139316
26/06/2006 22:30
26/06/2006 22:30
|
Joined: Dec 2005
Posts: 12,295 Sandhurst
Begbie
Ex El Presidente
|
Ex El Presidente
I AM a Coop
Joined: Dec 2005
Posts: 12,295
Sandhurst
|
try around 500-ish with nitrous
Your car is Usain Bolt with wellies
|
|
|
Re: What's the top speed of an NA?
#139317
26/06/2006 22:33
26/06/2006 22:33
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
For the record my NA has a VIS engine.
|
|
|
Re: What's the top speed of an NA?
#139318
26/06/2006 22:57
26/06/2006 22:57
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
bobbs, just go out, give it the bifters, come back and let us know
|
|
|
Re: What's the top speed of an NA?
#139319
26/06/2006 23:12
26/06/2006 23:12
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
I know what speed I got but it felt like it could do a bit more, hence my question.
|
|
|
Re: What's the top speed of an NA?
#139320
26/06/2006 23:54
26/06/2006 23:54
|
Joined: Dec 2005
Posts: 1,462 Ipswich 06/08/2002
Ed
My job on the forum
|
My job on the forum
Joined: Dec 2005
Posts: 1,462
Ipswich 06/08/2002
|
Quote:
What's the top speed of an NA?
Depends on the height of the cliff surely
|
|
|
Re: What's the top speed of an NA?
#139321
27/06/2006 00:11
27/06/2006 00:11
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
|
|
|
Re: What's the top speed of an NA?
#139323
27/06/2006 01:47
27/06/2006 01:47
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
Well it was on a private strip just for testing top speeds and it did an indicated 135.
|
|
|
Re: What's the top speed of an NA?
#139324
27/06/2006 01:52
27/06/2006 01:52
|
Joined: Dec 2005
Posts: 33,568 Berlin
barnacle
Club Member 18 - ex-Minister without Portfolio
|
Club Member 18 - ex-Minister without Portfolio
Forum Demigod
Joined: Dec 2005
Posts: 33,568
Berlin
|
Which sounds about right... Edited to say: I just found a spec that suggests 154bhp and 132mph. Neil
Last edited by barnacle; 27/06/2006 01:58.
|
|
|
Re: What's the top speed of an NA?
#139326
27/06/2006 02:13
27/06/2006 02:13
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
They do feel like they still want to go at that speed though......
|
|
|
Re: What's the top speed of an NA?
#139327
27/06/2006 04:51
27/06/2006 04:51
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
Did 132 through the gates at Mondello..v late 20v VIS which seemed a lot quicker than standard..possible to chip NA's?
|
|
|
|