SL55/63/65/R230 AMG: First trip to the Drag Strip....FINALLY!
11-19-2012, 05:33 PM
#27
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V12-Biturbo
High 1.6 60 ft pedaling it out of the hole. Anything more than 1/2 throttle and above idle speed launch, spins horribly, the 60 foot goes away, and so does 1/8 mile ET and 1/4 mile ET.
High 70's to mid 80's temps. No D/A meter present but air was decent and track is near seal level.
Mods: ECU tune, E85 fuel, custom ATPTURBO Fabbed intercoolers using Garrett 1000HP cores, secondary heat exhchanger for Mustang GT500 up front, Meziere(sp?) pump, everything else stock including turbo back to tailpipe. The car has no weight reduction at all and has the added weight of a 50 lb drag legal 5 point rollbar and associated gear.
Finally got it to trap 105 MPH on the 8th so I'm happy about that. I think with good track prep it will do a little better on the 8th and break 130 MPH on the 1/4 mile trap. We shall see soon!
High 70's to mid 80's temps. No D/A meter present but air was decent and track is near seal level.
Mods: ECU tune, E85 fuel, custom ATPTURBO Fabbed intercoolers using Garrett 1000HP cores, secondary heat exhchanger for Mustang GT500 up front, Meziere(sp?) pump, everything else stock including turbo back to tailpipe. The car has no weight reduction at all and has the added weight of a 50 lb drag legal 5 point rollbar and associated gear.
Finally got it to trap 105 MPH on the 8th so I'm happy about that. I think with good track prep it will do a little better on the 8th and break 130 MPH on the 1/4 mile trap. We shall see soon!
DA was Positive +1625' @ 81-82 Degrees easily shave 1-2 tenths if you ran in Negative DA & 50-55 Degrees + you should easily be able to run 1.5x- 60' shaving another 1-2 tenths off your 1/4 ET Your setup should be capable of 10.3x-10.5x in optimal Negative DA w/great 60' of 1.5x
11-21-2012, 08:12 AM
#30
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2008 SL65, 2006 SLK55(sold)
Not in my case.....We are using the same pump as RennTech and SpeeDriven which has a higher output(name escapes me at the moment, begins with a P) and its wired to run continuously. So we are beyond the Johnson. An Ice Tank or other auxilliary coolant tank in the coolant circuit is the only thing that can help. We have been working on several ideas to avoid putting in a permanent tank in the trunk. In our last run w did shave off close to an additional 0.2 sec with some collant mods and are fairly sure we will get into the 10's in the Spring; only missed it by 0.08sec on our last trip out with some fairly bad runs due to poor prep.
11-21-2012, 09:35 AM
#31
MBWorld Fanatic!
Not in my case.....We are using the same pump as RennTech and SpeeDriven which has a higher output(name escapes me at the moment, begins with a P) and its wired to run continuously. So we are beyond the Johnson. An Ice Tank or other auxilliary coolant tank in the coolant circuit is the only thing that can help. We have been working on several ideas to avoid putting in a permanent tank in the trunk. In our last run w did shave off close to an additional 0.2 sec with some collant mods and are fairly sure we will get into the 10's in the Spring; only missed it by 0.08sec on our last trip out with some fairly bad runs due to poor prep.
