MOTOR: Herrod XR8 Vs Walkinshaw GTS

[Sioso]

Before reading the figures below it is worth keeping in mind the GTS was auto and the XR8 manual.
They complained about launching the XR8 and changing into 2nd while trying to contain wheelspin.
They said roll on from 60km/h in 2nd was a dead heat at 400m and beyond.

WP507 GTS 507kw auto
$95490 + $7990 = $103,480 (includes pulley, exhaust, intake & tune)
0-100km/h = 4.38
0-400m = 12.39 @189.99km/h
80-120km/h = 2.45
100-0km/h = 33.42m

Herrod XR8 500kw manual
$52490 + 27260 = $79,750 (includes engine, exhaust, brakes, suspension, wheels and tyres)
0-100km/h = 5.08
0-400m = 13.12 @185.17km/h
80-120km/h = 2.77
100-0km/h = 37.68m

[gcg2503]

Auto vs manual.

Seems fair.

Carry on....

[Polyal]

Yeap it always then leaves the door open for these journo's to be completely care free with their articles.

$27k of mods on a XR8...really? Couldnt they just of modded the Xr8 to match the GTS stock and then compared?

Surely it wouldnt cost that much to get to that point, whats wrong the standard XR8 brakes for street use? Or the OEM suspension?

Is it a Hot Tuner article? I dont see the sense in getting a XR8 and dropping $27k. You may aswell pick up a late FG2 GT.

[Cymrucaveman]

Been hanging out to see the results of this little duel since the video of the Herrod XR8 at heathcote appeared on FB.

A little disappointed to be honest with the result...500kw and those figures..........

Still sounds a heap better than the HSV though!!!!!!!

[asagaai]

Originally Posted by Polyal

Yeap it always then leaves the door open for these journo's to be completely care free with their articles.

$27k of mods on a XR8...really? Couldnt they just of modded the Xr8 to match the GTS stock and then compared?

Surely it wouldnt cost that much to get to that point, whats wrong the standard XR8 brakes for street use? Or the OEM suspension?

Is it a Hot Tuner article? I dont see the sense in getting a XR8 and dropping $27k. You may aswell pick up a late FG2 GT.

This makes me think of that engineering adage - "the law of diminishing returns".

Noting more true than modifying vehicles. Polyal is on the money, cannot see the sense my end of ever doing more than intercooler/pulley/snout/fuel pump and jets, tune, bilstein shocks and rubber.

[raised by monkeys]

Apples and oranges never seemed so fitting.

[mik]

Traction control not working ?

[PepeLePew]

Surely issues with the Walkie too....don't those times match up with some of the better times achieved by the rags sorry mags for the stock GTS?

[zilo]

500kw+ eh?

Both slower than a Tesla Model S in both the 0-100 and 1/4 mile.

Bring on the future of automobile technology.....

[asagaai]

Originally Posted by zilo

500kw+ eh?

Both slower than a Tesla Model S in both the 0-100 and 1/4 mile.

Bring on the future of automobile technology.....

But you know- to me it would be like having sex with the most foxy lady with a wicked vocabulary tongue but being totally deaf....

[The Monty]

Originally Posted by zilo

500kw+ eh?

Both slower than a Tesla Model S in both the 0-100 and 1/4 mile.

Bring on the future of automobile technology.....

Both slower than my G6Et with 5k thrown at it...

[zilo]

Originally Posted by The Monty

Both slower than my G6Et with 5k thrown at it...

Your G6ET with $5k spent on it can do 0-100 in less than 4 secs, repeatedly?

[2242100]

Originally Posted by zilo

Your G6ET with $5k spent on it can do 0-100 in less than 4 secs, repeatedly?

Hi Zilo
I don't think he was suggesting sub 4 second times but I'd be surprised if a well spent $5 k couldn't equip a G6Et to be faster than these cars managed on the test.
Although the grip wasn't perfect I can't see that it was particularly bad in view of the times to 60 km/h (2.39 HSV & 2.59 Ford). If it was a big problem, then I'd expect the pace of these cars to look better after about 60/70 km/h when they were in higher gears, but from first gear on the numbers look close to standard times IMO. In fact the XR8's 60 to 190 km/h performance wasn't hugely faster than my standard and untuned FG XR6 Turbo Auto's performance at WSID when it managed a 12.731 quarter, with the car being launched in second gear.
I measured my time with my Performance Box, the same model that Motor has been using (They're accurate, it's 60 foot to 1/4 mile time was within 1 hundredth of a second of the Dragstrips timeslip number).
Below is the data that Motor got with the XR8 and beside that my times are listed.


Modified XR8...........My stock untuned FG XR6 Turbo Auto (2nd gear launch)
0..........0................0.................0
10........0.40............10................0.43
20........0.89............20................0.85
30........1.38............30................1.24
40........1.80............40................1.64
50........2.20............50................2.09
60........2.59............60................2.61
70........3.47............70................3.15
80........4.00............80................3.70
90........4.52............90................4.25
100......5.08............100...............4.85

110......6.08............110...............5.52
120......6.77............120...............6.40
130......7.52............130...............7.29
140......8.29............140...............8.19
150......9.45............150...............9.16
160.....10.44...........160...............10.24

170.....11.46...........170...............11.45
180.....12.55...........180...............12.96
190.....13.73...........190...............14.60 seconds. VMAX 190.6

Herrods are good tuners, I'm wondering about the fuel that might have been used on the test, could the cars have have been running on 94/5 RON E 10 fuel?
I believe that this fuels anti knock real world performance is similar to 91 fuel, because they both have the same (or a similar) important MOTOR OCTANE NUMBER and hence give a similar performance. I'd certainly expect that fuel to kill the performance of these highly tuned engines.

Also that brings me to the times that you got out of your companies FG Turbo. Was it running on 94/5 E10 or 91 fuel?
I've recently found that my XR6T's rolling pace slows down by 10% from it's 98 pace when it's running on 91 (runs done under practically equal weather/load conditions). It still feels ballistic on 91 because the initial throttle response feels equal with both fuels, but the Performance Box tells a different story.
I'm thinking it might explain the slow times that magazines have been getting out of standard FG Turbo's and the pace loss may be a lot more than 10% because the overboost would probably give up a lot earlier under hard 400 metre testing with 91 in the tank.

I'm not sure if 91 fuel would hurt the SS Commodores but their most recent test times also seem very slow to me. So have they also been running on 91 or 94/5 E10 fuels and if so, would they be closer to the HSV's if they had 98 fuel in their tanks?

[The Monty]

Originally Posted by zilo

Your G6ET with $5k spent on it can do 0-100 in less than 4 secs, repeatedly?

Both these cars were doing sub 4s to 100 now?
https://m.youtube.com/watch?v=d6uD1sm4t2w

You can stop watch it if you want. This was without ZF tune and on street tyres, 3 baby seats and roof racks and a full sized spare.....

[zilo]

Originally Posted by The Monty

Both these cars were doing sub 4s to 100 now?
https://m.youtube.com/watch?v=d6uD1sm4t2w

You can stop watch it if you want. This was without ZF tune and on street tyres, 3 baby seats and roof racks and a full sized spare.....

The text accompanying the video says it's 350kw.

9 secs 0-160km/h ain't exactly a stock G6ET...

(the roof rack and baby seats implies it's an ordinary G6)

I reckon it's probably a fake.

[Wretched]

• Traction seemed to be an issue for the Falcon
• Can only report on the cars they're given
• Comparing modded cars just leaves the whole thing open for far too many commentators on either side to have their own what if scenarios
• Imagine the Miami in the GTS

[duaned]

And the GTS rips the XR8 a new one! However I would have expected the XR8 to to zero to the tonne is less than 5 seconds! Clearly the chassis struggles to put all this power to the road.

[PepeLePew]

Originally Posted by duaned

And the GTS rips the XR8 a new one! However I would have expected the XR8 to to zero to the tonne is less than 5 seconds! Clearly the chassis struggles to put all this power to the road.

It's comments like that that start the flame wars that members on here get pretty tired of in threads such as this, please try not to be inflammatory.

I'd expect the GTS to take the nod. But auto vs manual is stupidity, and that 0-100 and 1/4 time for the XR8 are poor even for a stocker. Same for the Walkie, pretty much stock times? Drivers, cars, trans, surfaces, something is amiss?

(actually after thought....any tuners tested to see if the fabled 'overboost' function is present in the XR8 tune and that it is in fact identical to the GT tune? Still curious about that....engines may still just be tight but the few dynos i've read about on XR8 in internet land seemed to have read lower but that may just be the ones i've spotted)

[lucas2]

Regardless of the other figures, both cars trapped close to stock mph

[Whitey-AMG]

Originally Posted by lucas2

Regardless of the other figures, both cars trapped close to stock mph

That's the shame with having so much power and its basically useless.
If you're gonna unleash hell, then at least make sure the package is engineered to be able to put it to the tarmac. Suspension, tyres, wheels and DSC, ABS and TC software edits to deal with it.

[Shonky.]

Originally Posted by Bluey-GT

That's the shame with having so much power and its basically useless.
If you're gonna unleash hell, then at least make sure the package is engineered to be able to put it to the tarmac. Suspension, tyres, wheels and DSC, ABS and TC software edits to deal with it.

I think it's lack of power increase that is causing no change in terminal speeds

[Grippy]

Super tough putting that kind of power to the ground, especially in a manual.

[SensationFG8]

What a novel idea it would be to run two auto's or two manuals. More trash designed purely for trolls to eat up...

Curious they don't seem to get how to handle wheel spin either... More gradual throttle progression would go a long way rather than just saying "oops we spun the wheels"

[99AUXR]

Stopped buying motor years ago. . .

[JC]

Where is the 500kw measured at? I assume the engine? Why not spend the same on each car and then compare (assuming more money = more speed, but perhaps it means more power = more wheelspin)? I reckon the only reason they didn't use an auto XR8 is that it would just clip the manual XR8, and then presumably the GTS too.....Can't have Motor saying Ford won again.....

[SensationFG8]

I'm not sure I'm following what you're saying Shonky.

The XR8 is claimed to be 500kW and the GTS is claimed to be 507kW. Even if that's not at the wheels it's an increase.

Actually you have a fairly heavily modded Miami dont you? Does 5s 0-100 and 13s quarter line up with your experience modding that package?

[Shonky.]

Originally Posted by SensationFG8

I'm not sure I'm following what you're saying Shonky.

The XR8 is claimed to be 500kW and the GTS is claimed to be 507kW. Even if that's not at the wheels it's an increase.

Actually you have a fairly heavily modded Miami dont you? Does 5s 0-100 and 13s quarter line up with your experience modding that package?

I assumed the point Lucas was making, and that I agree with is they are slow for the claimed Kw

My stock GT335 trapped 114mph (circa 1mph down on the Herrod car)

My car is mild at 400rwkw, which is well below 500kw and trapped 123mph

Too many variable to worry about ET or 0 - 100

[uniacidz]

Better off handing them over to The Stig for some runs

[GTP534]

^^^^ Or Dan Ric!

[99AUXR]

Auto car NZ have gone better than 13 secs down the 1/4. These results are crap.