E24 6 series Rolling Road Shootout

OK,

We now have this day confirmed and Booked. I have now paid a sizable deposit

I have 10 cars confirmed 8 deposits paid and awaiting 2 checks.

I have 5 spaces left

Total BMW will almost certainly be in attendance to cover the event as i now have a guaranteed 10 cars.

See some of you there soon.

James

Horsetan wrote: Mine's a four-speed auto, James, not a *snif* three-speed....

Oi!

My exhuast (blowing back box) and my oil drip (back of the head) won't be fixed in time, so no high rev runs for me - but I might make it as a spectator.

*edit* by the way James, where do I send my fiver for the coupe register?

Edited by Jimbob

I think the normal fee is £120 an hour or around £400 for the day. Generally rollers are quite pricey, but getting a load of cars down makes things a lot cheaper. Tells you less, but you gets what you pay for in life.

James

SMG is a different kettle of fish altogether as are
modern BMW's with traction control - because the
front wheels are stationary and the rear ones are
going round, the ABS sensors pick up on this and
retard the timing, a by product of ASC+T as well as
the current system. That's probably why the SMG
system was having trouble.

As for disconnecting the ECU and someone in the
engine bay on the throttle, well that's just madness.
We (well, my old Fella) ran a dyno for almost 20
years, developed the system that BMW(GB) use at
Bracknell and did countless dyno runs on Automatic
BMW's and never had to do any of that. Indeed, I can
remember our dyno being calibrated and checked
using a B plate 525i Automatic! Just leave it in third
gear of as Andy so rightly said, switch it into 3-2-1.

£40 for three runs is cheap enough though. It's worth
doing because the dyno operator can look at things
like mixture.

Drew540i wrote: Not really - just run it up in third gear or switch it to 'S'. It should be stressed that automatics always give a vastly inflated power figure due to the lack of engine braking in an Auto.

Surely just switching to the 3-2-1 setting will lock the car in whichever gear & prevent kickdown taking place. As the transmission also has lockup in 3rd there will be engine braking - that's one of the things it's there for.

Sohlman wrote: Auto's take a lot longer as the kick down has to be deactivated.

Not really - just run it up in third gear or switch it to 'S'.
Also switchable autos have no kickdown cable to
disconnect! It should be stressed that automatics
always give a vastly inflated power figure due to the
lack of engine braking in an Auto. I don't know what
dyno and power plot system G Force have though.
Should be interesting!

Sure why not Ivan, good idea.

Only started her for the first time in 4 months yesterday. Keen to take the injectors out and have them cleaned first.

Regards,

Rohan

James, I'm in, where do we send a cheque to?

M635csi - standard.

 

Regards,

Rohan

Sorry Ivan. My mistake. IVAN'S CAR IS A 4 SPEED

The cost all in is £40 per car. For this you will get 30 - 40 mins on a rolling road with the engineer. The car will most likely get 2-3 runs untill an accurate figure has been achieved. Auto's take a lot longer as the kick down has to be deactivated.

The water levels, oil levels are checked before the car goes on. As are the tyre pressures to ensure they are set at the correct level as this can affect readings. If the engineer has any doubts about the car he won't let it on as he does not want a car going bang on his roller.

At the end of the day you will get a coputer print out detailing power at the wheels, estimated power at the flywheel, torque at fly and wheels and lamda readings throughout the runs.

James

What's the cost of this self-inflicted pain James?

I'm interested but being at the other end of the country . . .