hi im sure you havent had these questions asked b4 and ive tried to search,but what are the bhp/0-60 times of the 16v and 16v turbo cheers soon to be coupe owner

16vt is about 7.9 and 16v is give or take a few mins, 16 - 20 mins.......


Chrissy

ouch thats a bit harsh on the n/a lol,an owners site i was on a few years ago(turbo drivers thought they were "BETTER"than n/a drivers)hope thats not the case here lol

Don't you listen to Chrissy, he's just jealous about all that turbo lag.

16v is around nine seconds to sixty. Problem is that there are two gear changes in the way; there's just one on the 16vt.

20vt 0-60 is around 6.5s (between engine rebuilds)

why do you think the 16vt is that much slower than a 20vt to 60? - personally I dont think there would be anything in it if you could launch both pretty well.

30bhp and different gearing ratios?

Ahh but Neil there isn't 30bhp difference due to the boost limiter on the 20vt. Probably no more than 10bhp

Dunno, Flea - you're the expert on 20s

But of course it's not the absolute power per se that defines acceleration, except at a specific rpm, but rather the area under the torque curve for the rev range of interest. Maybe the 16vt has less lower down?

I know after driving both new several times I decided on the NA as the low-end torque and general in-town drivability was better; the turbo lag was a dog!

Neil

What about the extra cylinder and 4 valves......??

NA's arent that slow, I had one following me at a meet, and even with over 300bhp I didnt leave him on the horizon like most with cars.

Having said that, the difference gets bigger at higher speeds, even more so at illegal speeds (on the public road)

i would say the 16vt is the harder car to launch than the 20vt due to the turbo kicking in later, much easier to get bogged down.

but i didn't think the 0-60 for a 16vt was 7.9???????

I've been telling folk that for years!

what aload of plop!

i bet that if you out a standard 16vt against a standard 20vt you wouldn't see much difference
i've had both and now my third one is the turbo plus and i bet that couldn't pull away from the 16vt, infact i'd be willing to put that to the test

i've had two 20vt's now and i still think i prefered my 16vt

just my opinion and personal experience though.

i meen "put" not out in my 2nd line

A lot of the mags at the time - autocar et al - had the 16vt at 6.9 to sixty. Or roundabout.. If you have a look in the section with all the old articles.

http://img.photobucket.com/albums/v457/I...1994_page46.jpg

Half a second down on the standard 20vt. Sounds about right. Does it weigh any less, what with having less cylinders?

The journalists did 0-60 in 6 seconds in a standard 20vt, not 6.5, but they said if it didnt cut the boost in those lower gears then it would be mid 5's. I cant get lower than that very easily because the wheels just spin and I have to use half throttle in 1st.

"The journalists did 0-60 in 6 seconds in a standard 20vt, not 6.5, but they said if it didnt cut the boost in those lower gears then it would be mid 5's."

Sounds about right. That's similar to what an MR2 turbo manages, which obviously doesn't have the wheelspin issue.. Bit of a naff benchmark really, unless you have no mechanical sympathy whatsoever.

so, would the 0-60 time of a 20vt that was chipped so boosted higher in 1st and 2nd,and the boost at 1.2, and had about 250ish bhp be about 5.5 seconds ish?

20vt only cuts the boost if there is wheelspin - there is no limiter.

The 0-60 time in pretty much any coupe turbo is all down to the launch - not the overall power of the car.

It would be interesting to see how many coupes on the road at the moment can still acheive their quoted times, I'd bet half of them could'nt.

Cutter, limiter.... same difference

It cuts it if it thinks there is wheelspin when there actually isnt.

nope - it will only cut the boost if the revs rise too fast, i.e. wheelspin, otherwise you get full whack.

Hmmm, a standard coupe doesnt wheelspin in the dry at 1 bar, so it shouldnt ever need to cut the boost in the dry then, but it definitely did when it was tested because they mentioned it.

Using what tyres, on what surface, with the correct tracking, toe, etc.?

A standard coupe will overboost to 1.4 bar - they were designed to. When my car was standard I could get the fronts squealing in 2nd gear in the dry on acceleration.

1.4 bar it might I guess

Mine didnt wheelspin at all at 265bhp on a standard turbo at 1.2 bar though.

Yours must be a super coupe.

its down to several factors - on a decent surface, I can use all my power in any gear - I get just the slightest chirruping from the tyres in 1st gear, but no problems after that.

I've found the biggest factor is the turbo - small turbos spool up very quickly and can break traction with "only" 250bhp - bigger turbos have a softer power delivery and are less likely to overwhelm the tyres

EDIT - actually - that's complete tosh - biggest factor is the tyres, THEN the turbo

Mine has tiny wheelspin and thats it I'm off with no problem's and I'm standard.

Couple of questions to the experts.........

Does that GTEC chip everyone talks about knock the boost limiter off?

Does having LSD on this car help in any way and what type of LSD is it?
(I remember a conversation when I first got this car by someone saying to me it won't make much difference in a FWD).


Anyway in my opinion, 0-60 times are all about the driver.
I've been in heavily modded fast cars with different driver's and seen different behavior. judging, distance, timing and aggression seems to be very different depending on experience & maturity and of course the car.

Viscous LSD, mines gtec'd and i get no spin at all on a decent road.... my tests next sunday at the pod....

The Coupe "LSD" is a viscous coupling on the driveshafts, not a proper limited slip diff

However, it does make a difference, as it reduces the chance of a single wheel spinning

yes.

The limiter stops boost rising too quickly in all gears, not just 1st and 2nd. As 1st and 2nd gears are the only ones to zip through the rev band fast enough to trip it, they are the only gears that are affected by it though. If you could get enough power in a Coupe on a standard chip to make it go through 3rd gear as quickly as a standard car does in 2nd, then it would back off the boost. The same in 4th and 5th, but that would require a truly monumental amount of power I'd have thought...

As the limiter function will reduce boost to around 0.6bar in 1st and 2nd gears it will have a huge effect on maximum torque, but it won’t make anything like as much difference to peak power, as this will be made when boost has trailed off anyway. It should provide about 20-25lb/ft in 3rd, 4th and 5th gears, but probably 70-80lbs/ft in 1st and 2nd gears. Power will be increased by 20-25bhp in all gears.

I reckon the chip would give us a 14.2 ‘on road’ 1/4 mile time at around 104mph. This would compare to regular magazine road test 1/4 times. On a drag strip this would be more like 13.9s @105mph. 0-60mph will be around 5.6-5.7secs.

For me the problem is not with launching the car from standstill.

The problem is when the boost comes in 1st gear.

If I'm rolling at 5mph, and give it full throttle it will grip fine from 5 to 20mph, then the boost hits and an instant later it's bouncing off the limiter with the tyres spinning like mad. Might as well be revving it in neutral.

I dont drive it like this, I only ever use part throttle in 1st gear, but I cant help but think what the 0-60 time would be if it could grip a bit better, it feels to me like it would be amazing....

To get a proper launch you need to launch the car on boost. With your power then half throttle is about right once the clutch is up.

racelogic traction control is part of the answer I think.

IMO something else to go wrong (and they do). There have also been several instances of cars doing 1/4's faster when they have turned it off.

I think you simply need a better EBC. I think the AVCR has gear specific gain/set which should easily fix your low gear traction problems.

What I was wondering is what my 0-60 time would be if I could put down full boost in 1st gear without spinning, not how to reduce the boost in 1st gear

Ok, what power are you running?

314bhp, 300lb/ft

If you're talking a 4wd clutch-sidestepping-monster-launch, then i see no reason why it wouldn't be 4.3-4.6 seconds. If you mean front/mid engined rear wheel drive than I'd say something like 4.7-5 seconds. We have quite a long second gear compared to even cars of equal performance to your coop when rolling. With a 65mph second ratio, it'd be a tenth or so less I'm sure.

People just don't get how quick a coop is because of it's relatively poor 0-60mph time. For reference the S15 200sx put in a 5.5 sec time but was then dead level with the 20vT all the way to 130mph and it had 30bhp more and weighed 80kgs less!

Of course if we did have a drivetrain better suited to launching, we'd be heavier and have more tranny losses. Performane would probably more like a bugeye WRX then