Verified top speed of my HPF M3

[RaceMX-M3]

In the next few days provided conditions are acceptable, I'm going to bounce my HPF M3 off the rev limiter in 6th gear and data log the run using my vbox so I can see what the actual top speed of my car is. My top speed limiter is removed. I thought it would be fun to post a poll to see who comes closest to guessing the actual top speed of the car. Please vote, and post your voted time in a reply as well so we know who guessed what time.

We can also make this a little more interesting by funding a pool, and awarding proceeds to the person that correctly names the top speed - or whoever comes closest. If there is a tie the pool will be split accordingly. Cost of entry is $5 per vote, you may enter more than one vote if you wish. Once I receive payment I will add your name and what speed(s) you guessed in my OP. You can send me $5 via Paypal at paypal@dfwautoclub.com (paypal@dfwautoclub.com) - or give me the cash at the next meet.

Official List of Paid Time Entries
User ID/Times Voted

1. snowball / 208
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[RaceMX-M3]

Here's some data to give everyone something to base their "guess" on. We know BMW's speedometers overstate your speed by about 5%. In this run I was in 6th gear at Xrpm's and the speedo indicted 181. :burnout:

http://i246.photobucket.com/albums/gg86/M3bmwdrvr/HPF25173x-1.jpg
http://i246.photobucket.com/albums/gg86/M3bmwdrvr/HPF25173mph.jpg

[Fubar]

what is the gear limit?

[Fubar]

I actually think you could pull off 218 if you have enough gear and road.

205 was the official top speed for a STOCK FGT but they would typically get 212. With a pulley/tune 218 - 222 is more likely (so I've been told). Whipple... who knows.

... but I digress, I think you car is very similar (aerodynamically) to the GT. The power is similar (> the GT) so logically you should do 218-222+ Unless gearing is a problem.

[RaceMX-M3]

what is the gear limit?

If you mean rev limit it's 8000 rpms. Gears are stock and I'm rolling on 285/30/19 Toyo T1R's.

[Fubar]

FGT

Factory 3.3 Ratio Redline Speeds
1st: 62mph
2nd: 95mph
3rd: 131mph
4th: 171mph
5th: 210mph
6th: 255mph

[RaceMX-M3]

I have a good idea what the top speed will be but I'm going to keep my mouth shut to keep this interesting. ;)

[Mr. Hollywood]

What's the stock rear-end ratio?

[TiptronicSoldier]

I tried to hit 200 on the speedo in mine but the damn school zone lights were blinking at the time.

No but seriously, I've seen how fast your car climbs and I don't think 200 is a reach with the M3's higher gearing. You could probably get there before I got to 150 in my car.

Hollywood, I bet it is around a 3.11 or so.

[RaceMX-M3]

What's the stock rear-end ratio?

Final drive ratio is 3.62

[Mr. Hollywood]

What are your 5th and 6th ratios? Can you actually "pull" in 6th?

[RaceMX-M3]

What are your 5th and 6th ratios? Can you actually "pull" in 6th?

Here's the individual gear ratios

4.23 (1), 2.53 (2), 1.67 (3), 1.23 (4), 1.00 (5), 0.83 (6). This is mated to a 3.62:1 final drive with M Variable Differential Lock.

If you check the vbox chart I posted you can see (approx) g's well into 6th gear.

[Mr. Hollywood]

On paper, 206mph...if you have enough road and enough power. But then again, your car is kind of a brick at high speeds.

[snowball]

Please be careful, Scott. :thumbsup2:

[Fubar]

it looks square but it actually has a better cD than my GT or your Viper.

[TiptronicSoldier]

it looks square but it actually has a better cD than my GT or your Viper.

That's actually surprising, is it because of the hood design on the GT and Viper? I remember in the old viper, a lot of air would get trapped in the front hood.

Then I also saw that Hennessey Motorsports took the rear wing off their viper at the mile run to sacrifice downforce for less drag.(I know wings are different but same concept)

[HPF Chris]

Definitely be careful Scott. I look forward to seeing the results.

Chris.

[Mr. Hollywood]

Take it to the Texas Mile in March as see what you can do. Hitting a legit 200mph is harder than many think.

[Fubar]

^^^ agreed. What speed do you expect out of your car at the mile this year Kelly?

[Fubar]

That's actually surprising, is it because of the hood design on the GT and Viper? I remember in the old viper, a lot of air would get trapped in the front hood.

Then I also saw that Hennessey Motorsports took the rear wing off their viper at the mile run to sacrifice downforce for less drag.(I know wings are different but same concept)

Not sure why the Viper's cD (.35) is not better. The M3 has a cD of .28-.30 and the GT is pretty bad at .35-.40. The Ford was designed to look like a car built in the 60s so they sacrificed aerodynamic for styling. However you must multiply that cD figure by frontal surface area to get total drag so the GT and Viper may still have less overall drag and the BMW.

[Mr. Hollywood]

^^^ agreed. What speed do you expect out of your car at the mile this year Kelly?

Without a parachute...220-225mph.

[TiptronicSoldier]

Without a parachute...220-225mph.

That should be some type of record in a convertible.:thumbsup2:

[RaceMX-M3]

If anyone wants to swing their nuts about the TX Mile swing this. M5 owner, btw. :)

PUyf3g5AkI0

[Fubar]

Without a parachute...220-225mph.

OMG... thats insane.

I'll be there as well, just hoping to be in the 190s

[RaceMX-M3]

Who has voted? Who's puttin cash down? Step up. :D

[BlackSheep]

If anyone wants to swing their nuts about the TX Mile swing this. M5 owner, btw. :)

PUyf3g5AkI0


And 3 Corvettes :beer:

[jram]

I think the top speed will be a function of gearing given the hp of this car. The hp should overcome a lot of the drag, the wider tires will add rolling resistance at higher speeds, not sure how much this plays in though. No increase in downforce from aftermarket parts, but the car is lowered.

My guess is 205 because it is the theoretical limit (not my math):

8000 is ~205

rear axle 3.62 ar
6th gear 0.83 gr
tire od 26"
Pi=3.14159

V (mph) = rpm/60 x 1/ar x 1/gr x od x Pi x 1/12 x 1/88 x 60

8000/7000 x 180 = 205


-John

[Mr. Hollywood]

If anyone wants to swing their nuts about the TX Mile swing this. M5 owner, btw. :)

PUyf3g5AkI0

Very impressive for a gutted car. And I think SW has about every manufacturers type of car covered.

[BlackSheep]

Scott,
At what RPM do you hit the limiter?

[snowball]

Who has voted? Who's puttin cash down? Step up. :D

You mean you run the forum and you can't tell who voted on what? :(

I voted on 208......paypal payment sent.
You said we could choose more than one, but the forum does not allow one to vote more than once.

[RaceMX-M3]

Scott,
At what RPM do you hit the limiter?

8k rpms

[Mr. Hollywood]

Unless you find a good 2-3 mile stretch of road, I don't think you'll hit 200mph. Good luck though and be as safe as you can. :beer:

[RaceMX-M3]

Gerald has placed the first $5 in the pool. Come on you know you want to play. :)

[RaceMX-M3]

Unless you find a good 2-3 mile stretch of road, I don't think you'll hit 200mph. Good luck though and be as safe as you can. :beer:
My car made it from 65 to 173 in 13.46 seconds, covering a distance of 2,569 feet or 0.49 mile. It will be interesting to see how long it takes to hit the rev limiter.

[Mr. Hollywood]

My car made it from 65 to 173 in 13.46 seconds, covering a distance of 2,569 feet or 0.49 mile. It will be interesting to see how long it takes to hit the rev limiter.

173-200mph is a lot harder to achieve than 65-173mph. Wind resistance and the fact that you're covering more ground much quicker, it's easy to run out of room.

[RaceMX-M3]

Sneak Preview. This is on pump/methanol so I'm about 60 whp below race/meth. :)

BxqIXrrp5uo

[Qship5]

173-200mph is a lot harder to achieve than 65-173mph. Wind resistance and the fact that you're covering more ground much quicker, it's easy to run out of room.

and once past 200 mph it becomes exponentially harder and takes that much longer to gain speed.:D

[RaceMX-M3]

We may need to add a new section for the 200 mph club, vbox required. :)

[Fubar]

So do we have a number yet?

[Mr. Hollywood]

We may need to add a new section for the 200 mph club, vbox required. :)

Or standing mile MPH slip...I've got a few of those. ;)

[snowball]

So do we have a number yet?

Did you do your part? :dontknow:

[RaceMX-M3]

So do we have a number yet?

Not yet. HPF is going to datalog the run and I'm waiting for a backup ecu to arrive.

[Mr. Hollywood]

So are ya'll starting a 200 mph club? Ya'll hurry up with these Vbox runs, or I'll be lonely in there. :beer:

[snowball]

Do we have a sanctioned safe place to do 200MPH? :questionmark:

[Mr. Hollywood]

Do we have a sanctioned safe place to do 200MPH? :questionmark:

Yeah...but you only have a 5280' to do it. :D

www.texasmile.com

[snowball]

Yeah...but you only have a 5280' to do it. :D

www.texasmile.com

I'll amend my question; Do we have a local sanctioned safe place to do 200MPH? :questionmark:

[Mr. Hollywood]

I'll amend my question; Do we have a local sanctioned safe place to do 200MPH? :questionmark:

"Safe" is relative. I wouldn't advertise the location on a public forum...PM sent

[RaceMX-M3]

I have limited access to an airstrip with enough real estate to do this. That's about the only place I would recommend anyone attempt to drive their car 200 mph.

[mark1281]

I have limited access to an airstrip with enough real estate to do this. That's about the only place I would recommend anyone attempt to drive their car 200 mph.

I hope you can find a good place to get it done... I am looking forward to that day

[Mr. Hollywood]

Yesterday, is it true that Steve Dinan claimed a stroker M6 could do 200mph in the standing mile? Seriously, something that heavy with under 700rwhp?

[RaceMX-M3]

Yesterday, is it true that Steve Dinan claimed a stroker M6 could do 200mph in the standing mile? Seriously, something that heavy with under 700rwhp?

The M6 will easily do 200 mph, but I can't imagine Steve Dinan claiming it could do it within 1 mile. I wasn't there yesterday. :dontknow:

[Mr. Hollywood]

The M6 will easily do 200 mph, but I can't imagine Steve Dinan claiming it could do it within 1 mile. I wasn't there yesterday. :dontknow:

No doubt it could do 200mph + with enough room to stretch it's legs. But somebody there yesterday reportedly witnessed Dinan make that claim. :hmmmm2:

[Titanium 325]

I am going to say 202. No paypal, just playing for fun. I am thinking you may do better then that though. ;)

[BlackSheep]

No doubt it could do 200mph + with enough room to stretch it's legs. But somebody there yesterday reportedly witnessed Dinan make that claim. :hmmmm2:


Dinan's stories are just like Dr. Seuss's... They don't make any sense..

[RaceMX-M3]

Dinan's stories are just like Dr. Seuss's... They don't make any sense..

I'm quite certain Steve Dinan did not claim their S3 M6 could hit 200 mph in one mile. Someone is getting the facts wrong.

[Mr. Hollywood]

I'm quite certain Steve Dinan did not claim their S3 M6 could hit 200 mph in one mile. Someone is getting the facts wrong.

Maybe he thought the Texas Mile was 40mph rolling start...:laugh:

[Tritek R33 GTR]

I went 190mph and let out a bit early from a 140mph roll. Didn't take long at all.:dontknow:

[RaceMX-M3]

I went 190mph and let out a bit early from a 140mph roll. Didn't take long at all.:dontknow:

Most factory speedo's are off a bit. I know my speedo indicates about 5% higher than actual speed. You can borrow my vbox sometime if you'de like to log verified times. We keep a list of verified 60-130 times, which all are encouraged to post.

[NDeedOne]

602 mph..... ?????

[AlexT]

Please PM me also on a local place. I heard there are people doing it on 190 in the wee hours. I believe there is a 1000 hp supra that shows up regularly.

[QDOG]

Q's Guess 171.5678

[QDOG]

Street King on the M5 Boards out of Austin has the fastest six speed car (1000+ HP supra);
he has a stunning collection of cars and just recently picked up a red with white stripes Ford GT

[AlexT]

Q's Guess 171.5678

No way. My lowly 325 chp C4S can do 174.8765 already. That puppy's gotta do more than that!!! ;)

[RaceMX-M3]

I think Q's guess is less than authentic.

[Mr. Hollywood]

Sooooooooo...what's your top speed?

[RaceMX-M3]

Haven't done this yet. Trying to get access to a safe venue.

[Mr. Hollywood]

Haven't done this yet. Trying to get access to a safe venue.

The Texas Mile is in three weeks. We only care what you can do in the standing mile anyway.

[Mr.Big]

^^^yeszirrrrrrrrrrrrr^^^

[Fubar]

If I get that new whipple in, I'll bet I can get 200. Without it, low 190s.

[Mr.Big]

If I get that new whipple in, I'll bet I can get 200. Without it, low 190s.

~800rw for 190mph and ~900rw for 200mph+;) 190mph is not as easy as one would think...:hmmmm2:

[Fubar]

I'm not even close to that... I had heard the a standard whippled GT could get to 200. The 3.4 litter whipple only gets about 750hp to the ground. I expect the 3rd gen 4 littler whipple to et closer to 800hp but not much more.

We will see.

[RaceMX-M3]

Mark are you going to the TX Mile?

[Fubar]

Yes sir, you want to go?

[RaceMX-M3]

I may go.. do you have to stay the whole weekend or can I show one day, do my run and head home? Where you stayin?

[Mr. Hollywood]

I may go.. do you have to stay the whole weekend or can I show one day, do my run and head home? Where you stayin?

Call them....www.texasmile.com

Most people leave on Saturday, leaving room for people to run on Sunday. With them starting on Friday this year, I would think you could drive down on Sunday morning...run your car...and then drive home.

[Fubar]

<---newb ^^^ experience

[AlexSmith]

~800rw for 190mph and ~900rw for 200mph+;) 190mph is not as easy as one would think...:hmmmm2:

According to the C6ZO6 it is.

-Alex

[snowball]

When is this going to happen Scott:questionmark:

Is it on the back burner:questionmark:

[mbowdo20]

I think the box is broken, not much point doing the run until it can be all official.

[snowball]

I think the box is broken, not much point doing the run until it can be all official.

Mark has one as well........:D

[Fubar]

I do indeed. However I would not attempt anything until the weather is perfect... High winds and wet roads = Big life insurance payoff for Scott's wife

[RaceMX-M3]

I would love to do this soon but I really need a safe and legal venue. Going 200 = go to jail do not pass GO. :(

[BlackSheep]

I would love to do this soon but I really need a safe and legal venue. Going 200 = go to jail do not pass GO. :(

They gotta catch you first!

[snowball]

I would love to do this soon but I really need a safe and legal venue. Going 200 = go to jail do not pass GO. :(

Have you been looking at airfields around? Hey, We've got money on this, you took our money (paypal) and we're waiting..... :D :D :D :D :D

[Qship5]

The problem with an airfield is the runway isn't going to be long enough for him to reach top speed. Other than a unused military base you're not likely to find a runway we could rent that will be longer than maybe 1 1/2 miles.

[snowball]

The problem with an airfield is the runway isn't going to be long enough for him to reach top speed. Other than a unused military base you're not likely to find a runway we could rent that will be longer than maybe 1 1/2 miles.

Let's take a roadtrip to the Bonneville Salt Flats ! :thumbsup2: :D

[RaceMX-M3]

Have you been looking at airfields around? Hey, We've got money on this, you took our money (paypal) and we're waiting..... :D :D :D :D :D

Gerald,

I got your $5 bet and no one else. As soon as this happens you will be the winner of your $5. :dontknow:

[snowball]

Bunch of darn yellow bellied woosies! :D

[RaceMX-M3]

Bunch of darn yellow bellied woosies! :D

word. :cool:

[Rob1796]

Screw it, its five bucks. Its a cup of coffee now a days. Put me down for 204, I'll bring ya the cash at the meet. I'll put up cash to see this get done.

[snowball]

Screw it, its five bucks. Its a cup of coffee now a days. Put me down for 204, I'll bring ya the cash at the meet. I'll put up cash to see this get done.

Join the electronic world get a paypal account! :D :D :D

[AlexT]

How much space are you looking for?

[RaceMX-M3]

How much space are you looking for?

A nice 2 mile stretch would be more than sufficient. This event is definitely on the back burner and likely won't happen due to not wanting to go to jail and not wanting to blow my motor again.

[Fubar]

**** it... you need a project now that the mirror is done. If you blow it up, we will get you a new one.

we = you :dontknow:

[Mr. Hollywood]

So does this mean I'm still the only 200mph +++ person around here? :D

[mpulse]

I calculated 203mph. Scott has the HP but I think it is his gears that are going to limit his top speed. I am with you Hollywood... 200+ for sure.

B-rad

[Fubar]

So does this mean I'm still the only 200mph +++ person around here? :D

If you mean in the mile, then yes... I have pulled off 205 in the Nevada desert.

[Mr. Hollywood]

If you mean in the mile, then yes... I have pulled off 205 in the Nevada desert.

Using your speedo or a driftbox?

[snowball]

So does this mean I'm still the only 200mph +++ person around here? :D

RussRamz made it to 206.3 MPH (GPS verified) in his U.S. version Kelleners modded BMW M6 on the Autobahn:

jFwotHgR8nQ

[Fubar]

Using your speedo or a driftbox?

Speedo... I know what you are going to say but the speedo is dead on at 190.

[Mr. Hollywood]

Speedo... I know what you are going to say but the speedo is dead on at 190.

I was just curious. But my POS speedo was pegged at 220mph while the timing lights said 205. :( But I did 211mph last October before I blew through the clutch...thanks to having the driftbox.

[snowball]

I was just curious. But my POS speedo was pegged at 220mph while the timing lights said 205. :( But I did 211mph last October before I blew through the clutch...thanks to having the driftbox.

"blew through the clutch" - ? meaning it plain wore out while doing this? :hmmmm2: any videos?


Ouch!

[Mr. Hollywood]

"blew through the clutch" - ? meaning it plain wore out while doing this? :hmmmm2: any videos?


Ouch!

The clutch was under rated for my current power....I was hoping it would hold through the weekend. But after 5 Texas Mile pulls it had enough. My current clutch is rated at 1800 tq.

[Fubar]

Seriously, they make clutches that are rated for that kind of power? Is it a PIA to drive?

[Mr. Hollywood]

Seriously, they make clutches that are rated for that kind of power? Is it a PIA to drive?

Sure. It's chatters a bit when it engages and it doesn't like to be slipped...but it's not that bad....

http://www.mcleodind.com/downloads/prod_guide_PDFs/New_4_2007.pdf

[Mr.Big]

Seriously, they make clutches that are rated for that kind of power? Is it a PIA to drive?

I don't have half the power kelly has, But I run the McLeod "sintered" iron race twin... it drives heavy, but I can get it up my drive way and on a trailer with zero issues... best bang for the buck, on the market, imho...

[Mr. Hollywood]

So...........:whistle:

[UBR32]

:thumbsup2:

[White_lightning]

did this ever happen... i would think with almost 700 rwhp and enough road he could pull to redline in 5th. i dont see it pulling 6th though..

[RaceMX-M3]

did this ever happen... i would think with almost 700 rwhp and enough road he could pull to redline in 5th. i dont see it pulling 6th though..

The only thing that has held this up is my knock siren going off. The knock table HPF was using for their built motors was the same as the one for the factory S54 and it was discovered that the car was reporting a knock event when it wasn't actually happening. HPF adjusted the knock tables, advanced timing and added more psi to my tune and we believed the knock issue had been resolved. The car is tuned on 110 leaded, however it looks like a higher octane fuel will be required for speeds above 170. I ordered 112 and made it to 174 before the knock siren went off and I had to lift - however I learned this morning that the drum of 112 that was recently delivered is from an old batch that is bad and was never supposed to be delivered. :wtf:

I will have a fresh drum of 114 delivered and will have to drain the rest of the bad fuel out of my car and do more testing to see if this eliminates the knock siren.

http://i246.photobucket.com/albums/gg86/M3bmwdrvr/vbox%20charts/174MPH.jpg
http://i246.photobucket.com/albums/gg86/M3bmwdrvr/vbox%20charts/174MPH2.jpg
Bix1qC9zO4E

[jragan]

Scott -- by any chance does this problem put the car into "Limp Home" mode?

[RaceMX-M3]

Scott -- by any chance does this problem put the car into "Limp Home" mode?

No, it's just a siren that's triggered by the factory knock sensors. The ecu will pull timing and add fuel so I could stay on it but not going to risk ruining my motor.

[jragan]

The reason I ask is that there's a bug in BMW's throttle control system for the S54B32 that only affects motors with forced induction in certain situations. It's present on both the E46 and E86 but manifests itself differently in each (E86 gets limp-home with zero errors, E46 gets an error but no limp-home).