Reply With QuoteYes it is.Originally Posted by Sulaco
I assume those numbers are projected HP at the crank? If stock HP is 175 at the crank, 134 kW would mean 179 hp.
Martattack once put his stock, m104 powered C280 on a dyno and was getting 157hp at the rear wheels.
94 C280, 250k miles, 1999-2011 (gone, never forgotten)
CURRENT:
744 Silver 99 C43 AMG, 260k miles, 2011-
040 Black 98 C43 AMG, 190k miles, 2013-
Yes it is.
Stock is 193PS/190BHP.
JJJ.
That would seem correct if you accept 20% drive train losses. Stock @ crank = 194BHP less 37BHP (20%) = 157BHP. Then again what's the exact drive train power loss for that particular car on a given day (ambient air temp & humidity vary) or on a particular chassis dyno (don't imagine every dyno is the exact same), is 20% correct? Or, should it be 17.5% or maybe 25%, maybe add another 5% on top of those percentages if it's fitted with an auto box? Who knows? One thing for sure I don't.
If I take my C230K manual (stick shift) as an example and presuming it hasn't lost any ponies from new (190BHP) I would be happy if the chassis dyno figure at the wheels was 20% (38BHP) down, giving 152BHP @ the wheels, not that it makes much difference what the drive train power loss is as there's darn all I can do about it except, maybe fit a lighter prop & drive shafts, installing oil coolers to both g/box & diff along with fitting lighter alloy wheels and better free flowing exhaust system.
In a nutshell what I'm trying to say is, I'd take chassis dyno power figures as only an indication of what power is being produced at the crank, nothing more. And it's a well accepted fact that some dyno opeators will tell you a figure you want to hear.
Last edited by John Jones Jr.; 07-30-2013 at 06:19 PM.
JJJ.
In a nutshell what I'm trying to say is, I'd take chassis dyno power figures as only an indication of what power is being produced at the crank, nothing more. And it's a well accepted fact that some dyno opeators will tell you a figure you want to hear.[/QUOTE]
You can say that again.
Terrified of putting my C43 on a dyno. I'm certain I'd be sick to my stomach with how low the real numbers are.
94 C280, 250k miles, 1999-2011 (gone, never forgotten)
CURRENT:
744 Silver 99 C43 AMG, 260k miles, 2011-
040 Black 98 C43 AMG, 190k miles, 2013-
Sulaco, I wouldn't worry about it in the slightest may even be more that you reckon. If there's nothing wrong mechanically and you are happy the car is driving well just rock onIf you do end running it on a dyno, do it twice on different dyno's, that in theory should give you a better picture on the real power being made at the crank. Anyway, would you really notice or be upset if it made 275 instead 300BHP @ the crank with 260k miles . Doubtful imo. BTW, did you ever do a compression check for the hell of it?
JJJ.
I'm very happy with it, but I know with it being a 1500kg car with an awful slushbox transmission, 270,000 miles, and 14 years old? I'd prolly hit 220hp at the rear wheels if I'm lucky!
94 C280, 250k miles, 1999-2011 (gone, never forgotten)
CURRENT:
744 Silver 99 C43 AMG, 260k miles, 2011-
040 Black 98 C43 AMG, 190k miles, 2013-
Hi, everybody!
Forgive for my English. I write through the translator
Here that is established on my car of C230K:
1 . Custom a crankshaft pulley on 215мм
2 . Custom compressor pulley
3 . Driving belt 6PK 1400
4 . Fuel 4bar regulator
5 . Air K&N filter
6 . Compressor Porting
7 . Control and ECU reprogramming
8 . BOV HKS Super Sound
9 . Exhaust system direct from a collector with one resonator and the Lorinser muffler
10 . Interkuler size of a kernel 550*230*65. Input and output 65
With the received result it is happy. But nevertheless there is a wish to go further and to get still a big rise in power. Compressor photo after a porting. And peak value on the sensor
Hello, Adam F.
Wow, now that's a big inter cooler. What power (PS/BHP) does you engine produce?
JJJ.
Hello, Adam F.
Wow, now that's a big inter cooler. What power (PS/BHP) does you engine produce?
JJJ.
Exact values unfortunately aren't present. The stand where can be measured to be on removal 850км. Most interestingly how many gives out the motor. In the near future I will try to make measurements of dispersal 0-100, 0-200
Ah, o.k.
What do you mean by ''how many gives out the motor'' ?
JJJ.
I mean PS/BHP value
Through the translator there can be problems with transfer
Yes, I understand, no problem. But, are you asking the PS/BHP for your car?
JJJ.
Previously we expect 250-260 PS
Did car check with stronger rival. Subaru Forester of 2,0 Turbo, 4WD, MT. 240HP http://www.youtube.com/watch?v=tlVxqT_y7_0
Excellent.
JJJ.
thanks
See you've got the magic 1 bar. Well done
Hi JJR
I've been reading and came across a company called dyno spot racing (dsr) they seem to have made a clutch less supercharger pulley... The threads were like 6 years old..
Very good Abbas. Any details as I'd be interested to know how they over came the potential wiring issues and assoicated ECU issues with the clutch delete.
JJJ.
I mailed them asking if they still make the pulley unfortunately thy do not. I will reply and ask him if he's willing to share how they got about with the clutch delete issues. Unless if there's anybody in the San Jose are here on the forum that could possibly go have a chat with them
Hi, everybody!
Yesterday there was a miracle to which I can't find an explanation. Competed with stronger opponents. Our car went very well. After I looked in memory of the sensor at the maximum pressure of a komprresor. о_0 I was surprised. the arrow showed value of 1,2 bars. In confirmation of the words I will show a photo a bit later
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