W124, E320, Turboed
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From: Houston
W124, 320E, 1995.
Hp: 287 at the wheels.
Torque: 295 at the wheels.
Now some serious tounning will be required at the dyno to get this numbers up to 315 levels, since the fuel / air ratio is crazy something like 20 to 1, I mean off the charts, so that is defently holding about 25 HP and 30 pounds of torque.
My mechanic wont be able to dyno tune the car until early january!
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E500 W211 ex-E320 W124
Thanks for the info ¡¡ I think u will have no problems to raise ur horsepower to near 340 horsepower. Maybe you need to vary boost and readjust electronics. Its Hard work but It seems it can give good results.
Bye
Thanks
Bye
Thanks
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Joined: Dec 2005
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From: NJ
2009 SL63 AMG
I HAVE NOT BEEN ABLE TO SCAN THE CHART, But the figures are:
Hp: 287 at the wheels.
Torque: 295 at the wheels.
Now some serious tounning will be required at the dyno to get this numbers up to 315 levels, since the fuel / air ratio is crazy something like 20 to 1, I mean off the charts, so that is defently holding about 25 HP and 30 pounds of torque.
My mechanic wont be able to dyno tune the car until early january!
Hp: 287 at the wheels.
Torque: 295 at the wheels.
Now some serious tounning will be required at the dyno to get this numbers up to 315 levels, since the fuel / air ratio is crazy something like 20 to 1, I mean off the charts, so that is defently holding about 25 HP and 30 pounds of torque.
My mechanic wont be able to dyno tune the car until early january!
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Joined: May 2005
Posts: 2,494
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From: REHOBOTH BEACH DE
88-300CE TWIN TURBO, 99-C43, 05-G55K, 71-280SL, 94-E320 CAB, 08 CLK63 BLACK SERIES
I HAVE NOT BEEN ABLE TO SCAN THE CHART, But the figures are:
Hp: 287 at the wheels.
Torque: 295 at the wheels.
Now some serious tounning will be required at the dyno to get this numbers up to 315 levels, since the fuel / air ratio is crazy something like 20 to 1, I mean off the charts, so that is defently holding about 25 HP and 30 pounds of torque.
My mechanic wont be able to dyno tune the car until early january!
Hp: 287 at the wheels.
Torque: 295 at the wheels.
Now some serious tounning will be required at the dyno to get this numbers up to 315 levels, since the fuel / air ratio is crazy something like 20 to 1, I mean off the charts, so that is defently holding about 25 HP and 30 pounds of torque.
My mechanic wont be able to dyno tune the car until early january!
Add about 14% for drive train losses and you're running around 330HP and 340LBFT torque at the flywheel.
I'd be very concerned at the 20:1 AFR which is extremely lean and can cause engine damage under boost. The optimum or stoichiometric ratio for a complete burn is 14.7:1.
What are you using for your fuel enrichment circuit ?
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Joined: Aug 2006
Posts: 51
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From: Houston
W124, 320E, 1995.
The car is Running great I did had a bit of an oil leak out of one of the turbos, but it was only a lose conector, once fixed, no more problems.
I have not been able to figure the 20 to 1 fuel ratio yet, but is running way to reach not lean.
My tunner is now moving his shop and I have not found and other tunner to do it.
I personly been traveling too much so time has been little.
I need to finish my toy because is defently a pleasure to drive it arround!!
I have not been able to figure the 20 to 1 fuel ratio yet, but is running way to reach not lean.
My tunner is now moving his shop and I have not found and other tunner to do it.
I personly been traveling too much so time has been little.
I need to finish my toy because is defently a pleasure to drive it arround!!
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From: REHOBOTH BEACH DE
88-300CE TWIN TURBO, 99-C43, 05-G55K, 71-280SL, 94-E320 CAB, 08 CLK63 BLACK SERIES
14.7:1 is optimum, number below is rich, number above is lean.
20:1 means 20 parts air to one part fuel.
You're in danger of burnng your pistons under full boost.
What did you use for your fuel enrichment?
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Joined: Oct 2006
Posts: 258
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From: socal
It maybe worth the investment to get a extra O2 sensor and gauge to see where you are at all conditions. Surely it will help with tuning.
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Joined: May 2005
Posts: 2,494
Likes: 17
From: REHOBOTH BEACH DE
88-300CE TWIN TURBO, 99-C43, 05-G55K, 71-280SL, 94-E320 CAB, 08 CLK63 BLACK SERIES
Actually 14.7:1 is still considered lean too. Remember you are under a load and need to be running on the rich side during a load esp with a turbo and no intercooler. Under no load conditions it can go lean without a problem unless it starts to missfire.
It maybe worth the investment to get a extra O2 sensor and gauge to see where you are at all conditions. Surely it will help with tuning.
It maybe worth the investment to get a extra O2 sensor and gauge to see where you are at all conditions. Surely it will help with tuning.
Air/fuel ratios do vary with load conditions (those that are ideal for fuel economy are not ideal for maximum performance). A more realistic air/fuel ratio for maximum horsepower on gasoline will probably be a richer 12.5:1 to 13.5:1.
A do it yourself turbo install without the proper enrichment under boost equates to damaging an engine with high temperatures.
The extra O2 sensor makes sense. Best to set the enrichment curve under load on a dyno. Result will be maximizing power output and increasing engine life.
