silence

strictly out of curiosity what dyno are your numbers from?

i'm sure you've posted a graph somewhere too- i'd like to see it?

hooleyboy

My numbers are on a dyno dynamics dyno.

https://mbworld.org/forums/showthrea...light=c55+dyno

RBYCC

Understand altitude correction...but consider if you're not able to launch with less power due to high altitude, would you do any better with more power at sea level ????

Trap speed is indicative of the RWP the vehicle is putting down and it is ( assuming traction/good launch ) predictive of ET.

"Spinning wheels" doesn't give you a higher trap speed, because eventually you are going to hook up and at that point your revs will drop back to reality.

The longer you spin down the 1320, the lower you will trap.

Don't think your or any Mercedes is an anomaly because of the power through an automatic.

Plenty of cars out there like my ( traded in early 2007 for a 1971 W113 ) 2006 C6 Corvette.
Much poorer rear suspension for acceleration as compared to the Merc.
Similar stock RWP and torque as your modified C55, but yet mid twelves at 112+ is attainable if you learn how to launch !

suicidal4life

Actually that seems to be the case on several sections of this board. Been to the W211 page lately?

NitrogenBalance

So I hit up NED again yesterday with "higginsbeach" and his 11.3sec E55. It was a rental day with about 20 of us and it is worth its weight in gold. I could have ran 50 times if I wanted. Got 13 runs in for the day. The only other street cars were a few stangs and an RS4. The others were trailor cars running 8's and 9's

So I shaved my 14sec runs from friday down to a best of 13.2 yesterday. I improved my 60's from 3.3ish down to 2.4's pretty consistantly. I'm pretty comfortable in saying that there was no improving the 2.4 60ft using my street tires. I tried every method and even using the 'W' mode to leave softer. All in all I couldn't beat a 2.38 60' in W mode with ESP on. Tried loading the tranny once and just made a mess of the tires. Warmed up the tires a bit and proved to help a little even though they were street rubber.

So my best for the day was a 13.2@108mph with a 2.4 60ft. My best MPH for the day was 109 and change. I've got a stack of slips I should scan, all very consistant which made me happy that I got close to everything the car could do that day. With slicks and maybe an LSD I'm comfortable saying that my car should grabs 12's every run. I was happy to beat a V8 RS4 all day. His 60fts were great but up top he couldn't beat 102ish high 13's.

Rolands car was a time machine, the kicked him off after his 11.3 without a roll cage. He was nailing consistant 1.6 60fts with drag radials.

This winter is going to bring and LSD, drag radials, and headers. I'm totally hooked now and hellbent on getting 12's. So close I would have bought drag radials that second if anyone had them there.

RBYCC

Get a set of drag radials as you'll never hook up with the street rubber.

Based on what you have been posting your sixty should come down about a half a second and your trap speed will increase.

Look for mid to high 12's and 110+ with drag radials alone...

You have a very strong car...

NitrogenBalance

Thanks man

At first I didn't know how to translate the numbers and such and was a little let down. Seeing what some considered "fast" cars were running on both street tires and slicks made me feel alot better also. Cars that seemed like they should have been in the 12's were all 13's and 14's. It's been a long road building this car up so it was great to finally let it all out. I'll be looking for a set of cheap 17" or 16" wheels to mount some stickys on. Once I get some low consistent 60fts out of this thing I'll be in the market for more power again. Now my efforts are going towards handling, drivetrain, and suspension work to harness the power better.

ohlord

some 16's to absorb the shock of the launch.
$700 for a custom built high stall torque converter.
Drop you into mid 12's without spending the money on the LSD and it's marginal improvements over the stock unit.

Are you guys just going for time slips,or does anyone actually go door to door against real competition anymore?Like we do out west.


service your 722.6 mb spec fluid and filter.Install a trans temp block and gauge to monitor temps.you start doing that many runs and loading up on the converter,I see a very short life for the old 5 speed auto.

silence

better news this time

I wish you would try it with real tires prior to doing the LSD though- I hope that alone does the trick.

I'm sure that with the LSD you will still need the tires, but maybe not the other way?

-drew

Jons95c36amg

Are you sure your car is putting 342whp? My stock Clk55 is around 300whp which traps 109mph.

silence

his 342 run was on a kind dyno and with things cooled down well from what i understand, but it is a legitimate number.

I have not been on dyno with all current modifications, but have been over 300 comfortably on dyno dynamics in the past with same blower as he runs.

It's impressive that your car traps that fast

also, if you look far above he trapped 112 or so the other day with some other variables.

your car is likely able to get much more tq to the ground than his for whatever reason as well.

NitrogenBalance

As sure as I can be I guess. I've got a link on my sig to the dyno below and if you look half way down this page

http://www.trickengineering.com/dyno_cars.htm

you'll see my dyno/car at the place I did it. I also use another guy and last time his dyno worked we hit 330 something and then watched the heat soak drop it 20whp each run. Since the meth/H20 I got on the same dyno 2 weeks ago and it ended up still being broken. We got a 1 short run and made 347whp without getting all the way into it.

The run you posted also has a 3.2 60' I believe, I think my trap will go up a little once I get good 60fts. Your CLK is fast, someone posted the other day with a 12.5 I think headers only...

Jons95c36amg

My 60ft was a 2.1 which put me 13.1@108.6 with 1/2 tank gas. With drag radials I will be in the 12s easy.

PJmak

wait so you dropped in a supercharger and some other things to bring your car from 240 to 370hp at the wheels and you barely knocked of half a second of the time that a stock c43 gets

silence

something like that-

it's a bit different in the "real world" on the track (sort of like what we touched on above...)

trust me that his car is a whole ton faster than stock

NitrogenBalance

You got it although it's 340whp not 370. 100+whp

It sounds odd to some but the 1/4's just need some refienment, I'm comfortable saying she is in the 12's once it all hits the ground effeciently. The power is there. If I added another 50hp/tq without anything else I bet the times would be even worse, mph better, but slower et. The car leaves it's stock form standing still, ask JaredAMG who sold his C43. The look on his face when I dropped him back off at his car was funny. It would put lenghts on a regular C43. I drove a stock C43 for a year so I'm sure of this. I'm very happy with the way this car is comming together, it's gonna be fast next year when all is done

ProjectC55

Do it first ,b4 you say you can do 12's easy! And I get my car back on Monday!!!!!!!

Jons95c36amg

Its no brainer with drag radials which would give me 1.7 60ft will put me into the 12s easy. That 13.1 run I took off from idle feathering the gas.

silence

clk55 is a completely different animal though too-

you need to be about a second faster in that to surprise anyone.

don't get me wrong, i love your car and those cars, but it just isn't really as cool to go fast in.



my only other input here is that 1/4 mile is a great way to compare cars and is very interesting etc. etc. and fun to do... however, none of our cars are really built for it. much more interesting/appropriate for our cars is how fast you can go 50-120+.

ProjectC55

To me the only difference between a CLk55 and my car is that the CLK55 has two doors. Otherwise I feel they are pretty much the same car other than the W208Clk55 also being a little heavier.

ProjectC55

Until you do it,then you would have proven it's a no brainer.
And your run was at ATco as well. by the way when are you gonna give me an answer on my M3 vs your C36? Your good at avoiding this I see.

silence

that is really the only difference- the 2 door vs. 4 door thing. It just puts the vehicles in a completely different class though in my opinion. It's very different having a fast 4 door than a fast 2 door- they just aren't as common. The CLK looks a whole lot "cooler" than a C and that blows it's cover for me. Also, it is designed to run a bit larger rear tires which probably helps these track times a whole ton.

ProjectC55

But alot of the track times I'm seeing are with CLK55's with the same stock rear tire sizes the C43's use. Yes I like the idea that the 4door cars like the E55 W211 and our C43's are complete sleepers by looks. But fast 4dr cars are more common than you think,ask ,Bently,BMW and Audi!!

AMGSC

Damn, I wished I read this before I went to the drags this Sat and Sun.

Jons95c36amg

E-town track is just as fast as Atco. At Atco I had a nice cool down and the engine temp was cool before the run. Unlike E-town which the car had no cool down and the engine temp was hot. It sure made a difference.