Final Dyno
12-14-2005, 07:57 PM
#1
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Final Dyno
Just finally got arround to obtaining a dyno on my car since the sport camshafts and larger throtle body were installed
Using 25% drive train loss(conservative for 4-wheel drive SUV)car has 654HP and 702Lbft of torque. Graph is below. Car now has 491Hp and 527Lbft of torque to the 4 wheels. Dyno was done with center diff locked to distribute power equally to both axels. Graph is below. Car was 392HP and 442Lbft of torque when stock. I think a beast has taken over my truck.
Ted
Using 25% drive train loss(conservative for 4-wheel drive SUV)car has 654HP and 702Lbft of torque. Graph is below. Car now has 491Hp and 527Lbft of torque to the 4 wheels. Dyno was done with center diff locked to distribute power equally to both axels. Graph is below. Car was 392HP and 442Lbft of torque when stock. I think a beast has taken over my truck.
Ted
12-14-2005, 07:59 PM
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12-14-2005, 11:44 PM
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Ted, i would be careful about putting more power into your monster...you're getting really close to the torque limit of the transmission. See this thread i started a while back:
http://www.benzworld.org/forums/foru...227597&posts=5
http://www.benzworld.org/forums/foru...227597&posts=5
12-15-2005, 05:13 AM
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Originally Posted by Thai
Ted, i would be careful about putting more power into your monster...you're getting really close to the torque limit of the transmission. See this thread i started a while back:
http://www.benzworld.org/forums/foru...227597&posts=5
http://www.benzworld.org/forums/foru...227597&posts=5
.........you are correct about the 7 speed tranny, not being able to handle too much torque. Perhaps this explains why the W221 S65 reportedly will keep the 0ld 5 speed tranny. Having said that, the 05 G55's like mine do not have the new 7speed. They still retain the old 5speed.
Ted
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12-15-2005, 05:33 AM
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..........what is futher interesting about this truck is that if you look at the A/F ratio you will see that it is running mostly rich beginning at an Af of 12 in lower RPM's. The truck still has much more power it it. This can be harvested simply by raising the A/F ratio to say 14.
Ted
Ted
12-15-2005, 08:02 AM
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Originally Posted by Ted Baldwin
.........you are correct about the 7 speed tranny, not being able to handle too much torque. Perhaps this explains why the W221 S65 reportedly will keep the 0ld 5 speed tranny. Having said that, the 05 G55's like mine do not have the new 7speed. They still retain the old 5speed.
Ted
Ted
12-15-2005, 08:13 AM
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Originally Posted by Thai
Ted, i know...that's my point. Read the link again. The five-speed auto has a torque capacity of 796 lb-ft...you're approaching that limit.
Ted
12-15-2005, 08:27 AM
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Originally Posted by Ted Baldwin
...........gotcha! sorry for the confusion. I am at about 702Lbft of torque and while I will gladly take 796, I don't see how I can get that much more torque out of this truck. So my tranny is safe for now, not because I wouldn't push it but because I can't.
Ted
Ted
Good luck.
