E39 M5 runs 11.9@121 in the 1/4 - Page 13

Kelster · 20th December 2007, 18:04

Enzom, we're also expecting to develop additional HP. We're currently at the 'low' end of the blower psi spec for the S3. We think there is another 0.8 psi that should be available. Having said that I don't see us ever turning in the tens, even with a tailwind and on a 'down hill' track

Not with a 4000 lb sedan. Possibly 11.40s @125 mph+

The 3.45 rear is going back in tomorrow morning at MWW. Anyone who wants to watch (and keep me company) is welcome to come.

MarkQC · 20th December 2007, 19:06

Quote:

Originally Posted by Enzom

Actually, you seem to have found 2 full seconds for Ray's car when you add the component time savings. It should be in the 9's.

With practice and confidence in the car, Harry will shave some time off of the 11.92. But even with a 3:45 rear and drag radials, I don't see how he can find a second's worth of time. That's a very tall order. And if you've spent time at the track and modded cars and tried different techniques, you know just how hard it is to find 2/10's, let alone a full second.

It takes lots and lots of power and skill to see 10's. If C6 Z06's with drag radials and an excellent driver are barely hitting the 10's with traps of 129 mph and 1.6 60' times, weighing in at 3,300 lbs with driver, that tells you something. Figure that the Z06 is putting down 440 rwhp. Even if Ray's car is putting down 20 or 30 more, its carrying an extra 800-1000 lbs.

And everything is a compromise whe you are racing. Cold air isn't the greatest for tire grip, but it sure helps you make power. A numerically higher gear ratio sure helps you on the top end, but it makes it even harder to put the power down at the start. Drag radials give you better grip, but they put more stress on the driveline and can cause you to glaze your clutch. Hard to find a 1/2 second shifting unless Harry is shifting very slowly. And if you speed up your shifting too quickly, are you chirping 2nd and 3rd which costs you time?

I'd love to see Harry (with Ray's blessing, of course) run that car like he stole it on drag radials and 3:45's to get every bloody 1/100th of a second out of it. But even then I doubt we'd see anything quicker than an 11.50 on a perfect run. And that itself would be mighty impressive, btw.

I think Harry and Ray can sleep well even if the car never sees 10's. Just seeing 11's in a heavy 4 door sedan is incredible when you think about it.

...well of course you are pretty much correct. I have spent tons of time working to get hundredths of a second. I don't expect 9's, the estimates were best case for each area, not normally achievable but potential depending on obstacles -so as I said 10's-a second faster.

...and imho - this cars drive line is just not set up right for the drags. So even being heavy, (really just 400, not 800lbs heavier than the Zo6), it would take hard core mods to the driveline to hit 10's.

- - 14"+ slicks, a tougher rear end / suspension etc to put max posi down (also I meant the other direction with the # like 390+ -I was running 4.88 / 5.13) and a transmission like a Lenco that is able to shift as fast as a drag automatic (sorry for the reference to auto SMG guys

). So I still think it is possible.

...as I mentioned - I saw a shoebox 55 Chevy pull flat 10's all day long with a small block on alcohol. The hookup, the mods to the chassis to achieve an amazing hole shot where the front tires didn't rotate until they hit the pavement at about 40 feet is probably not achievable in the mighty M without chopping up this wonderful car...It's unlikely he'd do that...

But it is fun to imagine an M with it's front wheels a few inches off the ground for the first 40...

happy holidays

Blue Thunder · 20th December 2007, 19:16

Quote:

Originally Posted by Kelster

Enzom, we're also expecting to develop additional HP. We're currently at the 'low' end of the blower psi spec for the S3.

Let´s hope your stock internals like the additional boost.... be careful.

Enzom · 20th December 2007, 19:57

Quote:

Originally Posted by MarkQC

But it is fun to imagine an M with it's front wheels a few inches off the ground for the first 40...

happy holidays

Photoshop, anyone?

Same to you.

6speed · 20th December 2007, 20:18

Quote:

Originally Posted by MarkQC

...well of course you are pretty much correct. I have spent tons of time working to get hundredths of a second. I don't expect 9's, the estimates were best case for each area, not normally achievable but potential depending on obstacles -so as I said 10's-a second faster.

...and imho - this cars drive line is just not set up right for the drags. So even being heavy, (really just 400, not 800lbs heavier than the Zo6), it would take hard core mods to the driveline to hit 10's.

- - 14"+ slicks, a tougher rear end / suspension etc to put max posi down (also I meant the other direction with the # like 390+ -I was running 4.88 / 5.13) and a transmission like a Lenco that is able to shift as fast as a drag automatic (sorry for the reference to auto SMG guys

). So I still think it is possible.

...as I mentioned - I saw a shoebox 55 Chevy pull flat 10's all day long with a small block on alcohol. The hookup, the mods to the chassis to achieve an amazing hole shot where the front tires didn't rotate until they hit the pavement at about 40 feet is probably not achievable in the mighty M without chopping up this wonderful car...It's unlikely he'd do that...

But it is fun to imagine an M with it's front wheels a few inches off the ground for the first 40...

happy holidays

Not sure how much your car weighs but a C6 ZO6 with driver is around 3200 lbs. We have a scale at the end of our local dragstrip and I saw it first hand....pretty damn light.

Cheers ///

Enzom · 20th December 2007, 22:50

Quote:

Originally Posted by 6speed

Not sure how much your car weighs but a C6 ZO6 with driver is around 3200 lbs. We have a scale at the end of our local dragstrip and I saw it first hand....pretty damn light.

Cheers ///

I will check with Ronnie who was at the rental with his C6Z06. I think the weight with him in his car (he is a big and tall guy) is probably 3,300 lbs. Ray's S3 weighs 4020 without driver. So figure it weighed about 4175 with Harry and his helmet.

E39 M5 runs 12.3@116 in the 1/4

That's a pretty big weight difference.

THRILOS5 · 20th December 2007, 23:11

Quote:

Originally Posted by Enzom

I will check with Ronnie who was at the rental with his C6Z06. I think the weight with him in his car (he is a big and tall guy) is probably 3,300 lbs. Ray's S3 weighs 4020 without driver. So figure it weighed about 4175 with Harry and his helmet.

E39 M5 runs 12.3@116 in the 1/4

That's a pretty big weight difference.

S3 + me = 4,220
I better go on a diet if Ray wants the car to go faster

Kelster · 21st December 2007, 00:20

Quote:

Originally Posted by multiowner

Mind you, I am not a Civil Engineer but most sites require both the removal and fill of spots to acheive a proper site. When driving on the return road after the traps, you can plainly see a different grade. This difference is not reflected in the finished dragstrip. People will always have something to say about everything. lSCman would like to believe the track is sloped to continue the debate and have someone to research this 100 different ways. I would like to believe that the design phase of a dragstrip would include picking the best location for the strip, drainage issue, parking sites, traffic control, ect.... I would like to end on this, Track prep is a costly item that most owners would rather not spend their money. The chemical is rather expensive. Atco has always prepared the track to be race ready. Other owners choose to skimp on prepwork unless its a money day.

Bob, in researching the grade issue at Atco on Google, I came across the fact that Atco appears to be an 'approved' NHRA dragstrip. I sincerely doubt that NHRA would sanction events at at a track with the start/finish line differential elevations that have been alleged.

Kelster · 21st December 2007, 01:06

Quote:

Originally Posted by T Bone

Wow, your post is strangely UFH like..... Bold font.... You guys the same person?

Definitely not the same person. We've even been seen together in the same room at the same time (at Sergio's Christmas Party)... UFH also likes to vary his font sizes whereas I do not. I just happen to prefer Verdana 2 Bold

Quote:

The pic was the best picture I could find of a soup pot. When you drive a manual car, you are stirring the soup pot....

Stirring the soup pot? Wow, now where did you ever hear that one? I'm guessing it must be a local expression. Midwest? I've never heard it used around the north-east in all my years of drag racing which date back to the late '50s and early 60's (I know, right after the earth's crust cooled).

Quote:

I was impressed to see Trilos5 launch the car.... What was the 60' foot time in that run on video?

I believe Harry already answered this question (FWIW his screen name is Thrilos5). The boy can really drive that S3 alright and it's gonna get even better with more boost, the new 3.45 rear and drag radials. Harry is already in 4th gear at the timing lights with the present gearing. With the 3.45 he will be much higher in the rpms (and making more boost) at the finish. As it is the S3 is beginning to pull like a freight train at the finish line. Just compare its trap speed with the E60s and AMGs.

maikosg · 21st December 2007, 01:12

Quote:

Originally Posted by Enzom

I will check with Ronnie who was at the rental with his C6Z06. I think the weight with him in his car (he is a big and tall guy) is probably 3,300 lbs. Ray's S3 weighs Lorenzo, were you wearing your contacts last time you saw harry?? His hair alone weighs that much
E39 M5 runs 12.3@116 in the 1/4

That's a pretty big weight difference.

Guys, with all this talk about atco being downhill

i am going to take my car onto 280 between livingston and the oranges to run the quarter.

Anyway, pure logic can tell us that there is no "downslope" at atco because of safetey reasons. Have you ever tried accelarating a 7, 8, 9 or even 10 second car downhill?