Here we go guys R36 1/4 mile

[Hypo]

The times are pretty feasible really if you think about it:

The Wagon/Estate is heavier...
The Wagon/Estate suffers aerodynamically...
My engine had done ~ 3x the distance so was looser...
It was only 15deg-c here when I did my run...
I only carried 1/3 of a tank of fuel...
I made sure the climate control was off (compressor saps engine power)...
My engine was given the 'go for a blast' run in treatment...

... and, All cars are different. I've seen stock R32's roller between 240-265BHP.

I have no doubt Rob has run the time.

Could have been a better prepped track as well although I didn't get any wheel spin etc.

I was just interested to see what it would as I had big expectations after seeings Robs thread.

As I said I will head back out in June when it is colder and hopefully get a better time.

I would be extremely happy if I can have a 13 sec family wagon. 13.999 is all that is required.

On a side note SS Commodores were running similar times last night which I thought was interesting.

[RobBentley]

Check your tyres pressures too. I made sure I had 39psi per corner as per the fuel filler cap. To be fair, I got no wheel-spin, so I could well have pumped a bit more in and got a faster time.

Honestly - I think your main problem is the engine needs a good break in and work-out. Mine really started to feel different after 3-4k miles.

[Hypo]

Check your tyres pressures too. I made sure I had 39psi per corner as per the fuel filler cap. To be fair, I got no wheel-spin, so I could well have pumped a bit more in and got a faster time.

Honestly - I think your main problem is the engine needs a good break in and work-out. Mine really started to feel different after 3-4k miles.

Yup I am running 39 psi on all four tyres. Yup as I have said once it is a bit looser I will run it once more time.

I never got to Santa Pod. I always wanted to go out and run my Escort Finesse

[Swallowtail]

Just trying this:

http://www.dragtimes.com/horsepower-...calculator.php

According to Rob's trap times etc, it's spot on - about 3880 pound car with driver, 13.66, 100.36 mph = 303 hp. Pretty damn close!

Hypo's wagon = he said he had 3/4 tank fuel, so about 4085 pounds weight (both assuming 80kg driver), results in estiamted 287hp. Again, pretty close to where it should be with only 1500kms on it.

Same weight (hypo's wagon with fuel) with an assumed time of 14 dead and a trap speed of 99mph estimates 301 hp, and same hp estimate based on 60 pounds less weight (less fuel) with a 13.9s / 99.3 trap speed.

Based on that you'd THINK that a fully run in wagon with not much fuel in the tank should pull 14 or maybe *just* under. A sedan should be able to pull 13.7.... as Rob has done.

[Lance B]

Lots of things can effect ET (eg traction, driver skill, wind, weather conditions), which is why if you want to compare different cars (or power mods to the same car) the terminal speed is a much better measurement to use. For a given power to weight ratio of similar cars it is a surprisingly consistent measurment. If one car has even 5% more power than another it will show up in the speed at the end.

The other trick is to watch out for 1/4 miles figures being directly compared with 400M figures.

1/4 mile is actually 402.34mts. Would 2.34mts make that much of a difference? 2.34mts is only 0.6% different and therefore on time about .035sec over a 14sec run. I think my calcs are about right.

[Swallowtail]

True.. .they are pretty close. At 160kmh trap speed you are doing 44 m/s, so 2.34m would take you one 19th of a second. 0.05 near as damnit. ROb's run was "1/4", so I imagine would have been 402.34m?

[RobBentley]

Just trying this:

http://www.dragtimes.com/horsepower-...calculator.php

According to Rob's trap times etc, it's spot on - about 3880 pound car with driver, 13.66, 100.36 mph = 303 hp. Pretty damn close!

Hypo's wagon = he said he had 3/4 tank fuel, so about 4085 pounds weight (both assuming 80kg driver), results in estiamted 287hp. Again, pretty close to where it should be with only 1500kms on it.

Same weight (hypo's wagon with fuel) with an assumed time of 14 dead and a trap speed of 99mph estimates 301 hp, and same hp estimate based on 60 pounds less weight (less fuel) with a 13.9s / 99.3 trap speed.

Based on that you'd THINK that a fully run in wagon with not much fuel in the tank should pull 14 or maybe *just* under. A sedan should be able to pull 13.7.... as Rob has done.

Which also tallies up - because on the before-remap rolling road run I produced 308BHP. This was a few weeks after doing the drag run.

[Hypo]

Just trying this:

http://www.dragtimes.com/horsepower-...calculator.php

According to Rob's trap times etc, it's spot on - about 3880 pound car with driver, 13.66, 100.36 mph = 303 hp. Pretty damn close!

Hypo's wagon = he said he had 3/4 tank fuel, so about 4085 pounds weight (both assuming 80kg driver), results in estiamted 287hp. Again, pretty close to where it should be with only 1500kms on it.

Same weight (hypo's wagon with fuel) with an assumed time of 14 dead and a trap speed of 99mph estimates 301 hp, and same hp estimate based on 60 pounds less weight (less fuel) with a 13.9s / 99.3 trap speed.

Based on that you'd THINK that a fully run in wagon with not much fuel in the tank should pull 14 or maybe *just* under. A sedan should be able to pull 13.7.... as Rob has done.

Fantastic.

VW Drag day in June then.

I imagine the colder temps of old blighty would have also assisted. So June should be fantastic for us.

[apom]

Fantastic.

VW Drag day in June then.

I imagine the colder temps of old blighty would have also assisted. So June should be fantastic for us.

Sounds like a good idea for a club outing! Legal shootouts for each type of standard vehicle, should give a little bragging rights on the forum for at least a week or so!

[Swallowtail]

Well hypo takes bragging rights for now... with his heavier wagon with only 1500kms on the clock to mine with 9000.

Best my R36 sedan would pull tonight was 14.342. That was in S with launch control spooled up to its max of about 3100 - 3200rpm. 60 foot time was 2.123. I did 9 runs trying a few different things - manual mode letting it rev out, manual changing up earlier, manual mode stuffing up the gears (LOL), S mode, etc. The last run was the best one - I was up against a recent model V8 Holden ute (the 4 door one). He'd beaten me (rather comprehensively) on the previous run, but I pipped him by 0.15 seconds LOL on the last run.

There was one mental Sylvia that did a 2.513s 60 footer then scorched past me to still post a 12.8s 1/4. If he'd got traction better he'd have been VERY quick.

Temp was about 26 degrees C, so pretty warm. I had a mate there in a WRX and he couldn't get below 15s, even with 1.9s 60 footers. Another mate in a 'worked' C32 AMG pulled pretty consistent 13.3s.

All good fun, never done it before, so learned a lot! Would have liked to have got into the 13s though...

EDIT - I should add that I was in full street trim - spare tyre and towbar in the boot, 1/3 tank fuel. Next time the tyre and towbar are coming out LOL... Got the feel that the Launch control needed another 1000rpm to really get going. 3000 ish didn't feel like it was enough.