SL/R230: SL600 RennTech Dyno'ed @ 711rwtq!!!
Thread Starter
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Joined: Jul 2005
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From: North Scottsdale, AZ
2008 Bentley GTC, Porsche GT2/EVOMS GT700, 1968 Dodge Charger Hemi
SL600 RennTech Dyno'ed @ 711rwtq!!!
Got the SL dynoed for torque reading today after getting HP dyno yesterday
Here's the graph:
This dyno (Dyno Dynamics) reads notoriously low, it only has the RWHP at 520, where the Dyno Jet had it at 539.
According to our calculations, this car is putting out 910 lb/ft of torque at the flywheel!!!!! I think we are starting to reach some limits of the car now, wheelspin and transmission (car goes into limp mode when doing burnouts at the dragstrip).
All I can say is WOW!!!!!!
Here's the graph:
This dyno (Dyno Dynamics) reads notoriously low, it only has the RWHP at 520, where the Dyno Jet had it at 539.
According to our calculations, this car is putting out 910 lb/ft of torque at the flywheel!!!!! I think we are starting to reach some limits of the car now, wheelspin and transmission (car goes into limp mode when doing burnouts at the dragstrip).
All I can say is WOW!!!!!!
Thread Starter
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Joined: Jul 2005
Posts: 689
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From: North Scottsdale, AZ
2008 Bentley GTC, Porsche GT2/EVOMS GT700, 1968 Dodge Charger Hemi
Originally Posted by Scruffyone
Woot! Woot! Woot! That is a f**n nuts SL. How long did it take for limp home to reset?
Thread Starter
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Joined: Jul 2005
Posts: 689
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From: North Scottsdale, AZ
2008 Bentley GTC, Porsche GT2/EVOMS GT700, 1968 Dodge Charger Hemi
Originally Posted by E55JAY
Im very interested in seeing your new trap speed since the reflash, should be impressive.
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From: Southern, CA.
V12-Biturbo
Originally Posted by RennTechV12
Got the SL dynoed for torque reading today after getting HP dyno yesterday
Here's the graph:
This dyno (Dyno Dynamics) reads notoriously low, it only has the RWHP at 520, where the Dyno Jet had it at 539.
According to our calculations, this car is putting out 910 lb/ft of torque at the flywheel!!!!! I think we are starting to reach some limits of the car now, wheelspin and transmission (car goes into limp mode when doing burnouts at the dragstrip).
All I can say is WOW!!!!!!
Here's the graph:
This dyno (Dyno Dynamics) reads notoriously low, it only has the RWHP at 520, where the Dyno Jet had it at 539.
According to our calculations, this car is putting out 910 lb/ft of torque at the flywheel!!!!! I think we are starting to reach some limits of the car now, wheelspin and transmission (car goes into limp mode when doing burnouts at the dragstrip).
All I can say is WOW!!!!!!
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Thread Starter
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Joined: Jul 2005
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From: North Scottsdale, AZ
2008 Bentley GTC, Porsche GT2/EVOMS GT700, 1968 Dodge Charger Hemi
Originally Posted by thericker55
Car sounds great! but what % drive train loss are you using to come up w/910 lb/ft ??? I thought it was 20% at the most, so .20 x 711 rwto= 853.2 still an awesome figure!! but to get to your 910 estimate you'd be factoring in a 28% drive train loss
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From: Southern, CA.
V12-Biturbo
Originally Posted by RennTechV12
According to my tuner, they have derived that the addtional loss comes from the automatic transmission, they use 20% for a manual trans RWD car.
I think they are being a tad to generous no disrespect meant just curious??
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Joined: Jul 2005
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From: North Scottsdale, AZ
2008 Bentley GTC, Porsche GT2/EVOMS GT700, 1968 Dodge Charger Hemi
Originally Posted by thericker55
So are they using 28% like I deduced? If so I don't know how they can justify that??Every tuner out there Brabus, Renntech, Evosport, ect..all say drive train loss on these Automatics is anywhere between 16%-20% at the most... I think they are being a tad to generous no disrespect meant just curious??
I think they are being a tad to generous no disrespect meant just curious?? 
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From: Silicon Valley, CA
'93 RX-7, SLK55
Originally Posted by RennTechV12
They use that factor for their Dyno specifically. They use a Dnyo Dynamics, which is an all wheel dyno. It has different conversion factors than a Dynojet or Mustang Dyno, the ones that are most widely used.
Renn is putting down approx 890 ft lbs at the flywheel given a 20% auto drivetrain loss. Pretty impressive.You start with estimated flywheel Hp, THEN multiply by .8 to account for actual RWHP output. You don't start with a smaller base (RWHP) then multiply by 1.2 (the 20% is "20%" of a base that has already accounted for drivetrain loss). That is a double penalty & not accurate.
890ft lbs X .8 (20% lost to the drivetrain) = 712 ft lbs. A BOATLOAD of torque indeed. :v
See ya,
-Matt
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03' Carlsson SL55 (585HP)
Originally Posted by RennTechV12
Got the SL dynoed for torque reading today after getting HP dyno yesterday
Here's the graph:
This dyno (Dyno Dynamics) reads notoriously low, it only has the RWHP at 520, where the Dyno Jet had it at 539.
All I can say is WOW!!!!!!
Here's the graph:
This dyno (Dyno Dynamics) reads notoriously low, it only has the RWHP at 520, where the Dyno Jet had it at 539.
All I can say is WOW!!!!!!
WOW IT IS... VERY IMPRESSIVE!! SICK RIDE.
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From: El Paso, TX
'03 G500, '13 G63, '17 GLS63,
That is most impressive!!!
The 910rwtq is all speculation, I wouldnt even bother.
At the end of the day, all that counts is what is put to the ground, and 711rwtq w/ 520rwhp is just insane with only ECU upgrades!!
The 910rwtq is all speculation, I wouldnt even bother.
At the end of the day, all that counts is what is put to the ground, and 711rwtq w/ 520rwhp is just insane with only ECU upgrades!!
