NE Dragway results, 110.67mph 1/4..the rest is bad
RT-.638
60'-3.277
330-7.167
1/8-9.389
MPH-84.91
1000-12.608
1.4-14.483
MPH-110.67
So it was the first time I had the car out at the track so I wasn't sure what to expect. The track was so busy that it wasn't fun. 3 runs in just over 2.5 hours. The track also seemed like it had pledge sprayed all over it. My car has never spun so much. I have 400 mile old vredestein 265's out back so I'm not sure if maybe its them? It could also be that I'm very bad at driving this car..LOL. I need to figure something out to get this thing rolling. I did a burnout before staging and rolled onto the throttle with ESP on. It seemed like I was spinning half the track, the other cars which were trapping 101 and 102mph seemed to run away from the line. I'll be back there this wednesday with alot less people so I hope I can figure out how to lay it down. I'm hoping that the 110 trap speed is an indicator that the car makes good power. Otherwise the car ran smooth, stayed cool
RT-.638
60'-3.277
330-7.167
1/8-9.389
MPH-84.91
1000-12.608
1.4-14.483
MPH-110.67
So it was the first time I had the car out at the track so I wasn't sure what to expect. The track was so busy that it wasn't fun. 3 runs in just over 2.5 hours. The track also seemed like it had pledge sprayed all over it. My car has never spun so much. I have 400 mile old vredestein 265's out back so I'm not sure if maybe its them? It could also be that I'm very bad at driving this car..LOL. I need to figure something out to get this thing rolling. I did a burnout before staging and rolled onto the throttle with ESP on. It seemed like I was spinning half the track, the other cars which were trapping 101 and 102mph seemed to run away from the line. I'll be back there this wednesday with alot less people so I hope I can figure out how to lay it down. I'm hoping that the 110 trap speed is an indicator that the car makes good power. Otherwise the car ran smooth, stayed cool
A little more traction should get you very low in the 13 second bracket. Stout.
Last edited by hooleyboy; Oct 25, 2008 at 12:25 AM.
I can walk away from my friend's low 13 second cars (have a couple friend's with M3s and subarus in this range. it also feels a bit faster than my 13.4 second wrx that was totalled) from a fast enough roll, but get beat quite easily off the line initially.
I'm sure track conditions made it even worse
you probably shouldn't have been heating the tires?
with heavy enough rear wheels to have it help him hook his trap speeds would have dropped a lot... stick to the light wheels for sure.
did you have ESP all the way off? How did you attempt to leave the line? Describe the way you drove?
please try at least one run with the fuse pulled. I have found that i can modulate things with the throttle/brake and get much much better launches that way. The car just cycles back and forth all out of wack too much ostensibly from the added power of the charger confusing it. it's like when it tries to cut the power back on after a traction event it does it too much... over and over.
You will trap even higher i bet too
I can walk away from my friend's low 13 second cars (have a couple friend's with M3s and subarus in this range. it also feels a bit faster than my 13.4 second wrx that was totalled) from a fast enough roll, but get beat quite easily off the line initially.
I'm sure track conditions made it even worse
you probably shouldn't have been heating the tires?
with heavy enough rear wheels to have it help him hook his trap speeds would have dropped a lot... stick to the light wheels for sure.
did you have ESP all the way off? How did you attempt to leave the line? Describe the way you drove?
In the c32/c55 section a member switched to monolites after a few runs at the strip and as soon as the rims were switched to monolites they could not get traction. I went to a heavier rim and my traps were down about 2-3mph but my 60ft was way better in fact I nailed my best 60ft ever @ 1.866 with heavier rims, but my trap was 107mph and that was a 12.9 run. Stock wheels i trap at 108-109mph but my 60ft is like 2.40. I feel there is a trade off and with out good track prep you got to find a happy medium.
Trending Topics
The Best of Mercedes & AMG
Drop the air pressure in your rear tires to about 24PSI.
Stage the car and torque load to about 1200-1500 rpm and punch it smoothly as the last yellow lights.
The second run I did a burnout, staged, ESP and rolled into the throttle quickly again hoping I would hear a chirp and instead wound up with tires spinning past the 60' again. I backed out of the throttle each time an inch or so to see if I could regrip but it was a lost cause. I'm sure the spectators got a good laugh
This wednesday should be good for figuring this out as I'll be able to run several times. I'll mess with tire PSI, torque braking, rolling into the throttle smoother, etc...I have to admit that once the car hooked up it was pulling very violently and seemed faster than it ever was.
damn traction
What brand tires are you running?
Ya those are very high 1/4 mile numbers with a trap speed that high. The only power that counts is the power that gets to the ground. Hopefully you can resolve traction issue. Also you have alot of weight in your car so remember that will slow you down a bit (although I'm surprised that didn't help traction off the line).
the 1/4 time is absolutely ridiculous for the trap speed.
I wish i'd gotten to the track really badly now, but i had those stupid fuel problems for a while during the time when i was planning to go.
-drew
What brand tires are you running?
Ya those are very high 1/4 mile numbers with a trap speed that high. The only power that counts is the power that gets to the ground. Hopefully you can resolve traction issue. Also you have alot of weight in your car so remember that will slow you down a bit (although I'm surprised that didn't help traction off the line).

Have you ever run a 1/4 mile !!!!
24PSI is what you want to run on a wide cross section tire in the quarter...
It will give a larger contact patch and induce less wheel spin...
You always want to torque load an automatic transmission car even if it's a bit above idle.
Loading gets everything moving, lessens the action of the converter and limits drive train shock
Last edited by RBYCC; Oct 25, 2008 at 05:46 PM.
Just roll out at the tree and squeeze the throttle. Your car should be easily in the the lo 13's high 12's. Don't bother w/ the pre-burn at NED. The temp rating on the Vred's is not sub 300, so its not gonna help you much.
I'm w/ RBYCC.. run the rears at 24-26 psi...but thats just me.
I'll try to make it on Wed for SN's.

Have you ever run a 1/4 mile !!!!
24PSI is what you want to run on a wide cross section tire in the quarter...
It will give a larger contact patch and induce less wheel spin...
You always want to torque load an automatic transmission car even if it's a bit above idle.
Loading gets everything moving, lessens the action of the converter and limits drive train shock
Last edited by hooleyboy; Oct 26, 2008 at 12:43 AM.

If you read carefully what I stated nothing about raising RPM's too high.
First you lower tire pressure to lessen wheelspin.
You load the drive train from a little above idle to 1200-1500RPM.
You experiment to find the correct load RPM for launch.
This will give consistency and lessen strain on the drive train and potential variable in the output of the converter.
With loading you still don't punch it to the floor, you ease the pedal down until you achieve traction.
Sort of like "feathering a clutch".
If you learn this technique it will improve your RT and 60 times.
You will have to compensate for temperature, humidity, track condition, etc.
With a billion runs you sure beat me....
I'm a novice and have only been racing since 1964 and have held national NHRA records in SS classes with a second tier factory Dodge max performance Hemi lightweight car.

I don't think I've even reached 10K trips down the 1/4 !!!
Last edited by silence; Oct 26, 2008 at 08:11 AM.
On any other section on this forum members are treated with respect. The W202 section is building a forum wide rep for being rude to other members and thats unfair to the W202 members that are all in all nice people. At no part in any of my posts in this thread did I speak ill of anyone. If saying my C55 is just about the meanest sounding C55 bothers you you need to find something better to do. As far as I know there are three of us on this board that have custom dual exhaust on a C55. silence, you have really started to build a rep here as a total idiot that has no thoughts of your own. If I were you I would wait until some one makes a good post and then just agree with it. Doing this will make other members think you know what you are talking about with out really sharing any thoughts of your own. When you reply to a thread just use this....(+1) when you think you have found the reply thats right for you.
RBYCC- At no point was I questioning your take on all of this. Or even question your tire pressure techniques. Going fast in a strait line is not that hard. Lets call a spade a spade with out your light weight dodge what kind of records would you have held?? I'm not tossing around that I have the fastest N/A C55 1/4 mile time (and I do) All the other faster C55's run superchargers. For real when i say I ran a billion races its "figuratively speaking" I.E more than a few or more than i can count. Why people try to state their credentials to validate points is beyond me. Just because someone has been doing something longer does not make them better at it.
RBYCC- At no point was I questioning your take on all of this. Or even question your tire pressure techniques. Going fast in a strait line is not that hard. Lets call a spade a spade with out your light weight dodge what kind of records would you have held?? I'm not tossing around that I have the fastest N/A C55 1/4 mile time (and I do) All the other faster C55's run superchargers. For real when i say I ran a billion races its "figuratively speaking" I.E more than a few or more than i can count. Why people try to state their credentials to validate points is beyond me. Just because someone has been doing something longer does not make them better at it.
who's the one touting your credentials
it's a HUGE assumption that because your the fastest on a forum your the fastest.
the people who respect my opinion likely do so because i state my mind.
if you knew anything about drag racing you'd know that RBYCC's records are ALL about the driver. I'm not saying you don't know everything about driving your car or that your a bad driver, just that it's incredibly naive to say "driving fast in a straight line is easy".
at what time have i ever had "no thoughts of my own"? seems to me i have an intercooler set-up which i fabricated and no one else has and many other unique one-off modifications? I also most certainly "err" on the side of being outspoken rather than as one who restate's what others have already stated. Show me a post where i've done what your suggesting?
Also, what do you mean by reputation? reputation to you? i think each person likely has their own opinion.
Last edited by silence; Oct 26, 2008 at 05:39 PM.
I always found going fast and winning quite difficult as it takes a great deal of concentration and ability to react quickly and reach the traps first in something other then non qualifying time trials and eliminations.
Not sure your comment about "...what records would I have held ? "
That's a bit absurd, much like me saying without you having the "fastest" NA C55, would you outrun anything in the 1/4 with your sneakers on.
Actually held SS/BA and SS/CA in a 1964 max performance hemi and SS/EA in a 1967 440CI R/T.
Why should one state credentials...why not?
Too easy to make stuff up on the internet, so why not validate who you are and what you have accomplished.
You claim to have the fastest NA C55 so isn't that you looking for validation ?
As far as experience it can be had in a short time period or one much longer, it's the results and the credentials that count.
I'm sure you're trying to communicate something but you're missing the point.
My comments are purely based on many years of productive experience in competitive motorsports both in the NHRA & IHRA 1/4 mile and SVRA and SCCA road racing.

P.S.
Always someone faster then you.....in fact if you check Drag Times you're there at 12.99 with no posted time slip, yet there is another stock C55 with Renntech mods similar to yours running 7/10's faster then you....
You claim 342RWP and 357LBFT on a DynoDynamics pull...
My underpowered M103-12V TT at 220RWP and 230LBFT on a Mustang load dyno pull is only less then a second and 6-7 MPH slower then you with a 2.37 60' ????

Give me the equivalent RWP and I'll have you by about six cars in the traps.
You only would have my M103 with 120 less RWP by eight to ten cars ???
With the RWP you claim you should be running the mid to low 12's and around 112MPH +....
Maybe going fast in a strait(sic) line isn't that easy and driver makes a difference
Last edited by RBYCC; Oct 26, 2008 at 06:16 PM.
I always found going fast and winning quite difficult as it takes a great deal of concentration and ability to react quickly and reach the traps first in something other then non qualifying time trials and eliminations.
Not sure your comment about "...what records would I have held ? "
That's a bit absurd, much like me saying without you having the "fastest" NA C55, would you outrun anything in the 1/4 with your sneakers on.
Actually held SS/BA and SS/CA in a 1964 max performance hemi and SS/EA in a 1967 440CI R/T.
Why should one state credentials...why not?
Too easy to make stuff up on the internet, so why not validate who you are and what you have accomplished.
You claim to have the fastest NA C55 so isn't that you looking for validation ?
As far as experience it can be had in a short time period or one much longer, it's the results and the credentials that count.
I'm sure you're trying to communicate something but you're missing the point.
My comments are purely based on many years of productive experience in competitive motorsports both in the NHRA & IHRA 1/4 mile and SVRA and SCCA road racing.

P.S.
Always someone faster then you.....in fact if you check Drag Times you're there at 12.99 with no posted time slip, yet there is another stock C55 with Renntech mods similar to yours running 7/10's faster then you....
You claim 342RWP and 357LBFT on a DynoDynamics pull...
My underpowered M103-12V TT at 220RWP and 230LBFT on a Mustang load dyno pull is only less then a second and 6-7 MPH slower then you with a 2.37 60' ????

Give me the equivalent RWP and I'll have you by about six cars in the traps.
You only would have my M103 with 120 less RWP by eight to ten cars ???
With the RWP you claim you should be running the mid to low 12's and around 112MPH +....
Maybe going fast in a strait(sic) line isn't that easy and driver makes a difference

The bad news though (for me and Wes) is that it's going to be quite difficult in the best of circumstances to get these cars to launch with our "normal" street tires on them. It's a drawback, in a way, of using the Eaton rather than a centrifugal charger. It's also points out the huge "issue" with our cars and that is that we do not have factory limited slip and that it is very expensive to add it (roughly as much as i've spent on the supercharger and intercooler... just for a LSD)
So far as track experience- I've got the least! I've only been 5 times and the first 3 were with a 15 second truck.
I'm not trying to claim i know a whole ton, just that as a sometimes racer and spectator of many decently serious events i can appreciate that it can be quite difficult to drive fast in a straight line.-Drew






