What do you attribute the poor 60' numbers to? Let me make a few passes lol

 

Honestly, I wouldn't care too much about the ET. I would focus more on the 1/8th mile to 1/4 mile trap speed. You picked up 31.5mph...which is HUGE. That is an MB record in itself. For comparisons sake, Stephen Selden's MB record run "only" picked up 26.9mph over that same interval. I believe the previous best back-end pick up was DerekFSU's E55 running nitrous with a 30.65mph.

Congratulations!

Tom

 

This is true. I noticed that too, awesome. But you could pick up 100mph on the back half if you just rolled to the 1/8 and then slammed it lol (I know this isn't the case). Are the turbos too big to spool off the line? Might need a converter in it and 2 step

 

Man knows what he is talking about!...I am prepping one for the EV12.

Stall that sucker to 2800- 3k rpm and it's lights out.

 

two steps are always fun on turbo cars, back in my dsm days I had it launching on 7 pounds and 5000 rpm, kinda miss that awd 60' killer

 

It will come with practice and your car is moving. Nice talking to you today as well!

 

where is all this surgery taking place?

 

Car is in your backyard...Atl. Dragways are Commerce & Macon.

Any Blueridge Mountain drives on the menu? Perfect time...

 

Hello Soulsearcher,

197,7 MPH is a very good Result for a SL600 on the standing mile. Kind Regards from the Homeland of the M275 V12 Biturbo.

We in Germany are lucky to let our babies run flat out sometimes (early in the morning). Attached you see a picture of my Garmin-Navi after a run on the German Autobahn from Bonn to Cologne (completely even road) with my SL600 R230. Speed-Limiter on my car is still not completely removed. Maybe I will remove it completely in the future.

330 KM/H is 205,05 MPH !

Always take care of yourself on these highspeed runs!

Best Regards

 

So as many know I did the trans build back in June after the march Texas Mile tanked bad due to tranny slippage which kicked it into limp mode.

I have had the car on a dyno about 6 times in last 2 months and it was running lean. In some instances as high as 15 AFR (Yes you read that right). Marcin has been sending me files to add fuel (and other "tweeks") and 2 weeks ago the car finally did decent #s on the dyno with a 738 rwhp (at 19psi) reading but the afr was 12.8 and we shut her down. Also found out the fuel pressure was in low 50s so I changed the fuel filter (btw I have a 65 f. filter & pump) and yesterday the damn afr spiked to 15s with fuel pressure dropping to 47 from an initial 54 so shut her down quick (630rwhp). Ordered pump (just in case...since we are down to the wire for the mile) and will install if needed but will also be looking for pinched fuel lines (possibly back when tranny was built...who knows). Also the fact that fuel pressure is trailing down under load seems to point even more to a kink in the line (keep in mind current fuel pump only has 7k miles on it).

For those seasoned forum readers you can do your own math on what we might have on the dyno with the right fuel pressure (should be around 62+).

As for what this car will do with more boost...who knows but as usual I am looking forward to my 5th texas mile.

BTW the Texas Mile has a new location which I have not been to yet. Its about 30 miles from the old one.

Marko you making it this time? With some new goodies?

Bernie you coming naked this year?

Marcin you better be there. Last time I was lonely with no Benz guys for support. Hell if anything goes wrong on this sucker I can barely change a light bulb on it or even reach anything. You got that bay packed even more than it was stock...

 

I'll see you there! Good luck getting it sorted out. Can't wait to finally see this monster in person.

 

LOL! See you saturday morning!

 

So it was not smooth sailing with Markos car or mine. We just waited until the last minute to start prepping and thats what happens. I did 180 and and Marko did 185.
Cant speak for Marko but I managed 180 at 12 psi boost. Ecu was not allowing anything over that. Lots of reasons. But safe to say had we had 24 psi (Which I was told on this car with these turbos, its worth 20rwhp / 1 psi?) we would have done amazing. Car getting shipped to Marcin soon for more work. Yes I know this has been going on for a long time but whats the fun if it was ez!

 

I came by your rig looking for you guys to introduce myself, but nobody was home.

 

Ouch! these results on BOTH cars isn't what ANY of us expected or hoped for, I certainly applaud both you/Marko's patience & results thus far though Any word on how other auto's faired @ this latest event?

I heard ALL cars were off by 5 mph+ due to new locale of track & 20+ mph headwind, but still doesn't account for your car making LESS boost than a bone stock 04'-05' 600 model v12 biturbo @ 13-14 psi vs yours ONLY hitting 12 psi that's a huge dissapointment & obviously doubling the psi should've put you in that 200+ mph club @ 24 psi, damn that really bites!

 

I applaud your efforts. It's definitely not easy. In terms of boost,why so little? that's much less than stock Psi.

 

Bro, I've been a fan boi for Speedriven since the jump but these latest results are hard to stomach & it's not even my car. Maybe we should switch platforms, Headwind my ***... A Hennessy CTS-V wagon w/comparable bolt-ons to most 55k stage 5- 6 cars.

CTS-V Wagon ran nearly 190 mph in the TEXAS MILE, SAME DAY, SAME AIR, SAME LOCATION ETC... Watch this video, it shows MPH @ 1/4 mi mark 1/2 etc... Ran 134 mph @ 1/4 mi mark *** me runnin holy krap

• 707 bhp @ 6,300 rpm that's Crank HP NOT rwhp & to run that fast, that's faster than a brand new Corvette ZR1 down the same Texas Mile event..

Acceleration:
• 0-60 mph: 3.2 sec.
• 1/4 Mile: 10.9 @ 128 mph
• Top Speed: 211 mph
Performance figures based on a CTS-V Coupe with 6-speed manual transmission running on prepped track with optional drag radial tires.

The V700 Package Includes:
• HPE Cold Air Induction System
• Supercharger Pulley Upgrade
• Intercooler Heat Exchanger Upgrade
• V700 Camshaft Upgrade
• High Flow Cylinder Heads
• Stainless Steel Long Tube Headers
• High Flow Catalytic Converters
• HPE Engine Management Calibration
• Serial-Numbered Dash & Engine Plaques
• 1 Year / 12,000 Mile Limited Warranty

Chk the video.. SORRY to thread jack Soulsearcher, but it is very subject related viable content http://www.hennesseyperformance.com/v700.html

 

Nothing should be hard to stomach. It's one trip to the races without a clean pass between two cars. These cars will both do 200+ as soon as we can get the boost to remain constant. JC's car had the transmission replaced, which involves removing wastegate and vacuum lines, and has trouble making boost. When the car comes back up to he shop Marcin will check the lines and surely figure out the issue. As far as my car goes, bad driver side ignition module. Also transmission slippage codes, so time for an upgraded transmission. We had to lower the boost to below 18 psi in order to have the transmission not slip and the igntion to not misfire. We turned the boost down to 17 psi, which is when the car did 185.5 mph. I'm pretty sure we would have hit 200 mph in the headwind if my car didn't have the transmission and coil issues. And keep in mind that there is no headwind in the morning when some of the cars ran. It was 20+ mph every time we ran. Keep in mind JC's car ran 197.7 at 21 psi last year.

 

This I completely agree with. The Hennessey run appears to have happened very early in the morning, probably around 8am, as you can see the sun on the horizon. There was very little wind in the early hours. But everyday for some reason, once it reached 9-10am, we had a 20-25mph headwind for the rest of the day. Late afternoon runs were downright scary at the big end of the track. Even at the relatively low 165-166mph I was hitting in the M5.

Too bad I missed you guys, I wanted to introduce myself. I think I passed you guys in the pits once or twice, but I was driving some people either to or from the starting line, and didn't stop.

Next time....

 

always good talking to you my friend. Car always looks great.

ya me too....

ya the wind was bad most of the time. Unless you were lucky enough to be one of the first 20 to make a pass you were looking into a 20mph headwind.

ie when the wagon ran. We were in staging, they were the 6th car to run.

you both have very strong cars. JC always has the best attitude about everything though, he will fix it and make that 200 in march, rest assured.

we didn't have much luck either. E55 did 177, c63 162, m5 166

 

Tough days are part of racing. I'm sure we'll all do much better come March.

On the 185 mph pass a gust of wind hit me so hard that the car jumped 10 ft over to the right at about 175 mph. Now I can see why that Factory Five car wrecked. I ran a few cars after the clean up.

 

That wagon is definitely not the usual V700 package. Their V700 package car put down about 630rwhp with the manual transmission. Stock manual V's put down on average 30rwhp more than the automatics. Hennessey's automatic wagon put down 631rwhp:

http://www.youtube.com/watch?v=6dryytkVtD0

As far as the boost being lower than stock...I wouldn't compare boost #'s to the stock ones... given that we are talking about larger turbos... kind of apples to oranges.

Tom

 

agreed, the math just doesn't add up for that to be the V700, expecially with the drag coef. of the wagon.

 

Understood, however his boost level is much lower than what a stock car would run wether he has bigger turbos or not. The power output will be different considering the larger turbos, more efficiency, but you know that...

I am sure once car falls in the hands of speedriven it will be all sorted out.

 

Tell me about it, I am sure you have heard the drive shaft story, Just when you think you have something sorted out, you get hit with another issue. Best of luck to both you guys, I am sure once your tranny is rebuilt it will be a different animal.