JRCART ¼ mile video, Weistec Supercharged
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From: Naperville, IL/Chicago
2008 CLK63 Black Series 2012 C63 Black Series 2014 SLS Black Series
Thanks to everyone for the props, however this was honestly not even a great pass. DA was between 2650 and 2900 depending on which sites calculator you use, track prep was worse than poor. My last time out at Fontana in April I was putting down 1.6X and a couple 1.5X 60 foot times, the 10.8 pass shown in the vid was a 1.7X so I am leaving a few tenths on the table just with the launch alone. We are still in the testing stages and did not even work our way up to the most powerful pulley because of the poor track prep and traction issues. Its a good start and the hopefully shows the potential of the Weistec package. Stay tuned.
Last edited by jrcart; Aug 2, 2011 at 09:07 AM.
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From: Northport N.Y.
2013 f250 6.7 diesel
Obviously the car doesn't need to be in m to shift manually
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From: Northport N.Y.
2013 f250 6.7 diesel
We swapped the cams back to the stock M156 cams (for now).
Unfortunately the run was done at night so its a little hard to see whats going on, but if you look closely the cluster says S. We are hoping our next time out will be in the day time or with better camera angles. Let me know if this helps. Thanks!
-Weistec
Unfortunately the run was done at night so its a little hard to see whats going on, but if you look closely the cluster says S. We are hoping our next time out will be in the day time or with better camera angles. Let me know if this helps. Thanks!
-Weistec
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From: Naperville, IL/Chicago
2008 CLK63 Black Series 2012 C63 Black Series 2014 SLS Black Series
In April I was at Fontana putting down 1.6x and 1.5x 60's with the blower installed so I don't think it has effected my car in that manner but a good question none the less.
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From: Anaheim California
Weistec
Thanks
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From: Northport N.Y.
2013 f250 6.7 diesel
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From: Northport N.Y.
2013 f250 6.7 diesel
It’s actually the contrary; the car is making well over 600 ft-lb of torque to the wheels from the moment it leaves the line. Torque is what will break the inertia of the cars weight and get it to 60ft asap. Due to track conditions we were taking the strategy of ramping in the power to keep the tires hooked. At a prepared track we will be able to leave everything in it and plant all the power to the ground.
Thanks
Thanks
Hard to really think about all of this.. What I really meant, maybe I can explain better, if the belt is longer with more auxiliary components let's say. A/C for example it pulls a bit of power from the car. The extra component s/c must put a little strain on the initial power?
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From: NYC
P-Carro
Respectable times indeed in the type of conditions! How are you keeping the IAT's on CK? And what type of IAT's are you seeing up top? any heat soak? She seems to be running cool but the Slips can explain it a better.
Optimistically thinking- what times are you shooting for with this kit? hopefully low 10's and even 9s..Just weighing in The Blower Vs The Bottle in terms of Cost, Power and reliability.
Optimistically thinking- what times are you shooting for with this kit? hopefully low 10's and even 9s..Just weighing in The Blower Vs The Bottle in terms of Cost, Power and reliability.
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CLK63 Black Series
Hard to really think about all of this.. What I really meant, maybe I can explain better, if the belt is longer with more auxiliary components let's say. A/C for example it pulls a bit of power from the car. The extra component s/c must put a little strain on the initial power?
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From: Northport N.Y.
2013 f250 6.7 diesel
I guess we are talking negligible powerless that it most likely wouldn't be noticed at all!
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From: Houston, TX
2012 ML350 Bluetec
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2008 C63 ,2009 SL 63 AMG, 2011 SLS AMG
I'm very confident he can get in the mid 10's easily if not low 10's. congratulation Jrcart. you got a monsterous beast on your hands. Keep up the good work
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From: Anaheim California
Weistec
Hard to really think about all of this.. What I really meant, maybe I can explain better, if the belt is longer with more auxiliary components let's say. A/C for example it pulls a bit of power from the car. The extra component s/c must put a little strain on the initial power?
Thanks guys!
Last edited by Weistec; Aug 3, 2011 at 02:06 AM.
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From: Sydney, Australia
Vath ML63 Brabus C63 SL63 CLK63BS C63BS
We like to release wheel horsepower dyno numbers and curves so everyone gets to see exactly how much power is put to the ground at any given time. This accounts for any powertrain loss and is something that we feel is very transparent. If you watch the video you can see how we ramped the power in to get traction and then dropped the hammer, although the GoPro video camera in the car didn't seem to like it very much.
Thanks guys!
Thanks guys!
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From: Naperville, IL/Chicago
2008 CLK63 Black Series 2012 C63 Black Series 2014 SLS Black Series
Due to the increase in torque I have obviously had to adjust my launch teqnique however due to very poor track prep I had to launch at an even lower than desired rpm. I use a brake stall launch technique (brake torque). If you compare my launch in the video from last night to the video from April you can not only visually see a much harder launch but you can hear the car reved up to a higher rpm as well. What's odd about that is that the car was making more boost in April and I was able to brake stall up several huundred rpm higher which should show everyone how poor the track prep was on my 10.8 pass. Theoreticly I should be able to brake stall at a higher rpm with lower boost/torque before reaching the traction threshhold of the tires. To put it in even more simple terms, take a E350 and brake stall it up to 4000 rpm and let it go and you you're off to the race with no wheelspin likely, now take an E63 brake stall it up to 4000rpm, let it go and you're not going to do anything but smoke the tires, in order to launch the E63 and get a similar 60ft as the E350 you need to lower the brake stall and roll into the power differently. Drag racing isn't rocket science however it is more complicated than just mashing the pedal to the floor.
Last edited by jrcart; Aug 3, 2011 at 11:16 AM.
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From: seattle
1990 300ce supercharged and intercooled
You can also ramp the timing to reduce torque at lower rpms in the tune. Pull timing in the lower rpm range to calm the car down. Makes it much easier to launch and a more linear throttle for daily driving also. If you make enough hp/tq then a timing map per gear would be ideal. It is like the big hp turbo guys do not normally make full boost in 1st or 2nd or even 3rd.
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CLK63 Black Series
Hi JRCart,
I presume that you car still has the stock rear-end ratio in the differential.
I wonder what sort of times you could cut if it were properly geared for the quarter-mile, and not for all out top speed.
I seem to remember that you have clocked over 200 mph on the way to Las Vegas in your car, and that was before the supercharger modification was added.
JDB
I presume that you car still has the stock rear-end ratio in the differential.
I wonder what sort of times you could cut if it were properly geared for the quarter-mile, and not for all out top speed.
I seem to remember that you have clocked over 200 mph on the way to Las Vegas in your car, and that was before the supercharger modification was added.
JDB
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From: Naperville, IL/Chicago
2008 CLK63 Black Series 2012 C63 Black Series 2014 SLS Black Series
Hi JRCart,
I presume that you car still has the stock rear-end ratio in the differential.
I wonder what sort of times you could cut if it were properly geared for the quarter-mile, and not for all out top speed.
I seem to remember that you have clocked over 200 mph on the way to Las Vegas in your car, and that was before the supercharger modification was added.
JDB
I presume that you car still has the stock rear-end ratio in the differential.
I wonder what sort of times you could cut if it were properly geared for the quarter-mile, and not for all out top speed.
I seem to remember that you have clocked over 200 mph on the way to Las Vegas in your car, and that was before the supercharger modification was added.
JDB
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From: Texas
C63 507 AMG DA Car #19
Are you adjusting your BS suspension for optimum wgt transfer to max hook-up min ET?
or is all of this with your stock BS suspension, and suspension settings?
Are you running slicks or drs?
Fun to watch from the sidelines!!!!!!
or is all of this with your stock BS suspension, and suspension settings?
Are you running slicks or drs?
Fun to watch from the sidelines!!!!!!
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2008 BS
Betrezra - get your butt and car out to Vegas for the 19th of Aug and come play with us. It will be hot, slow times but it is vegas! I am coming out from Italy to do what will probably be a handful of runs so I am sure you can come from Texas!!
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From: Naperville, IL/Chicago
2008 CLK63 Black Series 2012 C63 Black Series 2014 SLS Black Series
I purchased an extra set of OEM Black Series shocks and had them revalved so they have softer compression and slower rebound and a set of special taller and softer springs. I am currently running 17 " DRs and skinnies up front.
