0-100kmh Times

[abg]

I've been doing some testing on my recently purchased auto VZ Commodore to get a base line before I start modifying it. It already has some basic mods, k&n air filter, an exhaust which I think is twin 2.25" into a single 2.5" and extractors as well as a few other things, wheels, lowering springs etc. The car has around 190,000km on it.

Running 0-100kmh tests with a reasonable launch I'm only getting around 9.3 seconds which seems really slow to me, I thought from the factory they were about 7.5 seconds?. This was with about 3/4 tank of 95 on a 29C day.

Has anyone else tested their 0-100kmh times?

[alex2_s]

has your k & n air filter oiled up the MAF causing a lean mixture and less power.

[trenooo]

was under the impression that you would lose power with a twin 2.25?

[kngsv6]

why would a twin 2.25 lose powere?

[richardpalinkas]

but he has extractors as well so that should make the times better than stock shouldnt it?

[torana355]

175 or 190 motor?? A healthy 175 with the mods you have listed should run in the 8 sec bracket to 100kph. My SV6 with a VCM tune does it in 7 flat with a full audio system.

[abg]

Thanks for the replies everyone. It's a 175. I'll check the MAF this morning and may put an LC1 wideband on this afternoon to see how the mixtures look. Have been looking at purchasing the VCM suite to do some tuning too as it seems there are big gains to be made there.

I did the 2 hole mod and a few more runs last night, was seeing around 8.8-9.1s which is a little bit better but still a lot higher than it should be. My launches are a bit inconsistent, revving too high on the stall is causing wheel spin and slower times.

Has anyone else tested their times?

[abg]

Did a bit of measuring up today. The headers are made by Advance, 1 3/8" primaries down to a 2 1/4" secondary. These join to a cat on either side which goes to dual 2" pipes which join just before the rear wheels to a single 2.5" pipe then out through a mid size muffler and a small muffler just before the tip. I'm not sure if any of this is still the factory system or not, it does like a bit old and crappy and has press bends. It is fairly loud under any sort of acceleration, too loud for my liking, cruising at a constant speed is fairly quiet.

Does anyone happen to have a photo of the stock system to compare with?

[HoldenOnn]

How are you timing your runs. If it is by a hand stopwatch then its not ideal. If you live close to a dragstrip, then this would be ideal to go and utilise their accurate timers.

Just for reference below is a pic. Its not a 175, but it will give you an idea of a 190. Its my totally stock 2004 VZ Calais running BP Ultimate 98 with 3/4 tank of fuel. Gtech Performance Meter was the timing instrument.

0-100 km/h range from 6.99sec - 7.37sec below;

[VzVzVz]

I'd love to test my time, but last time i tried around the docks, I got dobbed in by the bloody night workers.

[Dz811]

How are you timing your runs. If it is by a hand stopwatch then its not ideal. If you live close to a dragstrip, then this would be ideal to go and utilise their accurate timers.

Just for reference below is a pic. Its not a 175, but it will give you an idea of a 190. Its my totally stock 2004 VZ Calais running BP Ultimate 98 with 3/4 tank of fuel. Gtech Performance Meter was the timing instrument.

0-100 km/h range from 6.99sec - 7.37sec below;

that's quick for a standard 190,
is it auto or manual?

I ran a 14.9 with a few mods including an exedy clutch, and my 0-100 times were give or take 7 flat too?

besides that, anything slower than 8 flat is a bit worrying for a 175... i'd be checking for engine sludging and possibly bad spark plugs/coils, who knows...

[abg]

There is a local drag strip that I plan on going to in the next few weeks to get some proper times, although it might be a bit embarassing being the slowest car at the track haha, I'd guess around 16s? I expect it should launch a lot better on a properly prepped track. I am just timing with a stop watch, I agree it's not ideal but the reproducability is about the same as the gtech times posted.

Sludging doesn't seem to be too easy to check on these engines as there's a baffle under the oil filler hole, I may look at pulling off a rocker cover though. The car has full service records so at least I know the oils been changed every 15,000km. Plugs have just been changed with NGK LTR61P-11 regapped to 1.5mm. There was a slight miss previously that went away after changing them.

[bigdaddycool]

My exec runs low 6's at night but anywhere from 8-9's avg on a scorching day......... but I have most shit done except for a turbo or supercharger.

[Dz811]

My exec runs low 6's at night but anywhere from 8-9's avg on a scorching day......... but I have most shit done except for a turbo or supercharger.

low 6's....??

that's insanely fast for a 6... and a little unbeleivable to be honest lol.
But if the variance is from low 6s to 8.5s... then you've probably got problems coz that's a massive difference in times, even the difference between a 2 degree night and a 40degree day isn't THAT much...

[vr1uz-fe]

i could belive a six could do it in 6 as an ss with simple tune can break into the 5 sec zone

street machine did an artical a while back where they got an ls1 vt ss they just did simple bolt ons including stallie and diff gears tune and all the rest they had her into the 12 sec 1/4 mile zone so maby just into the 4 sec zone

[Dz811]

whilst i have no doubt of that,

take note of 2 things:

firstly, v8s take much less to go fast, a 5.7 will run 250-odd rwkw with a full exhaust, intake and tune to suit... There's plenty of them on this forum, so we know it's true...

secondly, his car (by his own admission in his own thread), makes 140ish rwkw. Mine makes (dyno proven) 159rwkw. and mine (a 190) has been tuned and modded too.

so trust me, unless he can video it to prove it, im afraid i just don't beleive it...

(also, impulsesv6 supercharged alloytec will do high 5's, and its been worked to the hilt, there's no way a NA 175 can do low 6's without boost or HUGE mods...)

[vr1uz-fe]

fair enough

[bigdaddycool]

to be quite honest I wish I could record a run in miliseconds just to prove how fast it is.

I can get most SS's off the line....... just because Impulse has a massive supercharger or whatever doesn't mean squat, you gotta get power to the ground, manage your weight correctly........ the 1st 2 seconds count the most....... then when you come up out of first you gotta get your shift right, pressure, advance drop sorted, next to no wheel spin due to the pressure of the shift etc........ gotta be quick n smooth.

6 seconds flat is very 'do able' in a 6......... a supercharger in a 6 is more top end power, more grunt throughout the overall rev range......... but off the line most will have trouble putting that massive power to the ground straight up.......

0-100 has many factors that come into it and thats no bullshit. To be quite honest with you, SS's are pretty slow off the line I recon........ even the VE SS's........ they weigh more and V8's make alot of sound but straight up they dont make super power til mid to high end.

They are heavier, they get more wheel spin..........

No doubt a VE SS will kill me in the end, but I'll get em to 60... I've run around 7 tunes over my car from VE Omega's to VE SV6's to Cadillac CTS Direct Injections ......... to workout how power works when putting it to the road.

They all have pro's and con's........ but yeh. Off the line power opimisation is hard........ it's not easy to move 1-2 tonnes quickly lol

[torana355]

[QUOTE=HoldenOnn;1668590]How are you timing your runs. If it is by a hand stopwatch then its not ideal. If you live close to a dragstrip, then this would be ideal to go and utilise their accurate timers.

Just for reference below is a pic. Its not a 175, but it will give you an idea of a 190. Its my totally stock 2004 VZ Calais running BP Ultimate 98 with 3/4 tank of fuel. Gtech Performance Meter was the timing instrument.

A stopwatch used well is way more accurate then a g tech meter, i used one of those on my old SSS pulsar and it told me i was running a much quicker time then the printout at WSID (Dragstrip)

[torana355]

to be quite honest I wish I could record a run in miliseconds just to prove how fast it is.

I can get most SS's off the line....... just because Impulse has a massive supercharger or whatever doesn't mean squat, you gotta get power to the ground, manage your weight correctly........ the 1st 2 seconds count the most....... then when you come up out of first you gotta get your shift right, pressure, advance drop sorted, next to no wheel spin due to the pressure of the shift etc........ gotta be quick n smooth.

6 seconds flat is very 'do able' in a 6......... a supercharger in a 6 is more top end power, more grunt throughout the overall rev range......... but off the line most will have trouble putting that massive power to the ground straight up.......

0-100 has many factors that come into it and thats no bullshit. To be quite honest with you, SS's are pretty slow off the line I recon........ even the VE SS's........ they weigh more and V8's make alot of sound but straight up they dont make super power til mid to high end.

They are heavier, they get more wheel spin..........

No doubt a VE SS will kill me in the end, but I'll get em to 60... I've run around 7 tunes over my car from VE Omega's to VE SV6's to Cadillac CTS Direct Injections ......... to workout how power works when putting it to the road.

They all have pro's and con's........ but yeh. Off the line power opimisation is hard........ it's not easy to move 1-2 tonnes quickly lol

Im sorry but you are full of shit. Printout of 1/4 timeslip if you want to claim figures like that lolz.

[Dz811]

I can get most SS's off the line....... just because Impulse has a massive supercharger or whatever doesn't mean squat, you gotta get power to the ground, manage your weight correctly.....

6 seconds flat is very 'do able' in a 6......... a supercharger in a 6 is more top end power, more grunt throughout the overall rev range......... but off the line most will have trouble putting that massive power to the ground straight up.......

a fair amount of what you just said is correct, but not to the degree you're talking. and a supercharger gives torque down low, not just top end. But that's another argument entirely....

anyways, from my own experience and from countless vz drag times and 0-100 times etc, i don't doubt that your car is quick, but low 6's as i said is insanely fast.
And unless you can video it, i think you are slightly mistaken

[delcowizzid]

my vn turbo gtech runs never mind the 14sec run at 67mph LOL that was only 1st and 2nd gear ran out of road was off the throttle in 2nd at the end 5-7psi its hard to get into the 5's on the street with open centre and street tyres

[bigdaddycool]

pft there's no way i'll ever video it, you gotta be an idiot to video that while your driving. I got VCM Scans ........ but it doesn't measure in exact milliseconds.

To be quite honest lets weigh it up. The VZ's suck overall........ their fuel injected, the throttle is hopeless and choppy which is also a reason for knock, the execs have fairly limited 4 speeds and the sv6's have a crappy beamer gearbox not designed to deal with more torque then what they put out stock. The stock intake is woful and could of been designed way better, the gear ratio on the diff is crap stock........ I mean really. The only good thing about the VZ's are they are brutal with torque with their cam setups........

The early model VE's are pretty good, again tho fuel injected....... mildly fixed the intake, the diff, the throttle........ but due to their difference in cam setup they cause the inlet penum to run hotter then a VZ by an average of around 6-10 degree's, their heavier.......... our manifolds in the VZ's actually get cold at night, the VE's dont so much.......... but perhaps thy are designed that way for a reason.

The VE's are better overall off the line due to their cam run up........ which gives nice power off the line to the limiter......... nothing magic but focused on getting the power to the ground more on VE's......... and there's also no stupid VE table, the cars ECU works that out for you based on your tuning parameters etc.....

To be quite honest.......... I think the SIDI is the bomb...... both the Omega and SV6, better gear ratio's, more gears = more power per gear, no fuel injector lag which is damn annoying....... direct injection is WAY more accurate so there's less variance in power on a hot day compared to a cold night.....

Personally I think the alloytech engine overall is the bomb, there's no much you can do with it......... I'd love to see a twin turbo V6 sidi or a V8 version of the alloytech engine.......

--------

But yeh 0-100........ 6 seconds done with the right tune....... so far only a 06 VZ Exec out of my tunes has been able to hit the mark, 05's......... utes, CTS, SV6 etc will run just over a 7.........

Also I personally dont care as much about 0-100......... but it's HARDER to get the power interval sorted into gear changes, so eg.......... if I'm at 55km/h and floor it, it'll run upto 6000rpm roughly and shoot from first gear.......... too much torque in alot of the tunes = no grunt, lower torque, more spark and a build = a bang.......

There's more then just foot to the floor.......... no good if someone rolls up beside you and guns it and you floor it, hit a weak spot n get owned. SV6's have less of a problem on that one having the extra gear mind you. 4 speed gear boxes unforunately get trapped by that. I'd never get a auto sv8 etc........ 4 speed with v8 powers is like constipation 6 speed manual sure but again......... VE's are better overall.

[HoldenOnn]

A stopwatch used well is way more accurate then a g tech meter, i used one of those on my old SSS pulsar and it told me i was running a much quicker time then the printout at WSID (Dragstrip)

Unfortunately your experiences with the Gtech Performance Meter doesn't sound too good

I have to advise that I have taken my Gtech to the track in both my current VZ Calais and my previous VL Turbo and it proved itself on several occassions to be fairly close to the track timers....within .1 or .2 of a second over the 1/4 mile. This .1 or .2 of a second was fairly consistent and this repeatable accuracy is enough to check any power gains on the street and be confident with the results.

I have no problems with a stopwatch. I used to use one 10 years ago before I got introduced to Gtechs. Each to their own, but I definetely recommend a Gtech over a stopwatch for accuracy, safer, repeatability of results, and software to download and compare many aspects of a run.

The first run on my picture in this post shows a 14.8 1/4. This may have been with a tailwind, great start without wheelspin, grippier road etc. But the others of 15.0 and 15.1 are probably more close to the truth. And with my Perth Motorplex printout which I have reading 15.3 for the 1/4 mile in my VZ Calais, I totally stand by the Gtech to be a good measure of performance and a fantastic instrument to buy

[Dz811]

we're getting off topic here... clearly the point of this thread is that the OP probably has a problem of some sort, and yes, get it checked out.
Secondly, Gtech timers can probably be both accurate and rubbish in different circumstances, i personally wouldnt bother.

And thirdly, bigdaddycool is full of crap (thank you torana355)
End rant.