Decided to get a baseline dyno on my car tonight before beginning any modifications. Some of you know that I work for a tuner that does cars outside of the mini market. So I have access to a dyno pretty much whenever it is free. I'll do another set of runs after the 15% reduction pulley goes on and yet again after I tune the ECU. But for now just the baseline.

2005 MCS
1800 miles on the clock
Dynapack 5000
8 Second ramp time
4th gear
Ambient temp: 73F
Humidity: 61%

2 runs were done, so consistant to one another that I didn't see any reason to do more.

And here is a link to the chart:

http://mattharris.aspeedracing.com/s...20dyno%201.jpg

Summary:

160 HP and 145 Ft/Lbs @ the hubs

 

Looks like a nice, healthy torque curve.

What sort of numbers do a stock 180 bhp Mk4 or an R32 do on your dyno?

 

Thanks Andy. I'm pretty pleased with the results, it's a good starting point.

I couldn't tell you off the top of my head what those cars dyno stock. I'll look around on the dyno computer when I go back to the office tomorrow if I can remember. I know chipped MK4's are generally around 200 @ the wheels. I believe a stock R32 was somewhere around there (all 4 wheels obvously). But i'll have to look to make sure, so don't quote me on that one.

 

WOW. I'm jealous. I'd be curious to see what a 1.8t does on your dyno too. However, the AWD, AWW, and AWP engine's power can differ greatly. I have seen stock 1.8t's anywhere from 115 to 170whp, so it would be useful to know the build date or the engine code to make better sense of it. Most of the R32 graphs I have seen show between 185 and 201 whp, so that may be a better tell. Were you running 91 octane on that run?

My baseline is in my sig and I will be doing a dyno after my intake install next week, and then another with my new Helix 17% pulley early next month. Exhaust to follow. We'll have to compare notes.

 

I'll get some baseline numbers for 1.8Ts tomorrow so you guys can see how the dynapack reads. As for my runs, I was running 93 octane as always.

 

Very intersting torque curve. I've never seen an unmodified MCS peak like that. They are usually pretty flat from about 3500 to 6000 rpm, and they are usually 8-10lbs lower. If you can ever figure out why, that tidbit would be good intel for the "Dog" thread. Congrats!

 

OK guys, here are some representative dyno's from other vehicles on our Dynapack 5000. I've overlaid them with the dyno of my MINI I did last night. My car is the solid lines and the dotted lines are the various other cars. I've upped the contrast on the images so that you can see the dotted lines more clearly.

1st dyno - 05 Cooper S vs. VW R32:
http://mattharris.aspeedracing.com/mini%20vs%20r32.jpg

2nd dyno - 05 Cooper S vs. Stock 2000 (AWD) VW GTI:
http://mattharris.aspeedracing.com/m...0awd%20gti.jpg
* AWD = 150HP stock

3rd dyno - 05 Cooper S vs. APR Chipped 2002 (AWP) VW GTI:
http://mattharris.aspeedracing.com/m...0awp%20gti.jpg
* AWP = 180HP stock

 

Thanks for posting. I'm not too familiar with that syle dyno graph and there is a lot of info on there that I don't know what to do with, but the peak numbers for all the cars look in-line. The stock AWD looks pretty average, and the APR chipped AWP (I had an APR chipped/cat-back AWD) seems to be spot on. It seems like everyone who has the APR chip gets about 200hp 220ft/lbs no matter which 1.8t they have. (And you gotta' love how fast those K03 turbos spool!) What's up with the beginning of the torque curve on the R32 though? I expected something quicker and stronger from a 3.2.

As for comparing our cars. Our hp take about the same path, with yours peaking higher (both just below 7k), but our torque curves are different. Mine shoots straight up from 2.5k, starts to level at 3k and peaks just below 4k (141 ft/lbs.), whereas yours has a steady climb from below 2.5k to after 4k (145ft/lbs.). Actually, now that I write this, it seems that the difference just may be in the way the graphs are layed out.

Thanks very posting. Very cool comparisons.

 

being as your talking dynos...heres mine MCS 03`, graph is with BMP filter mod only, torque was 154

 

Finally got mine scanned in...

Car runs on 91 octane, and had about 5k on it.

 

i wonder why my torque is higher ???

 

Your torque seems high in comparison to the hp you are laying down. I don't know these cars well enough to know why that is, though.

I'm going back to the dyno in the next couple of weeks to test my new air filter. I'll be back with some more numbers soon...

 

Your car put down 145 whp and about 128 lb-ft of torque at the wheels. That's almost exactly what mine (and most that I've personally witnessed) have put down stock.

 

Am I looking at this wrong? I see more than 128 lb/ft of torque...

 

mine is 154.....

 

But that measurement isn't at the wheels, right? I get 135 lb/ft. assuming a 12% loss in twist.

 

You know what ...i think you have a point there! You hear about HP and Wheel HP...what about torque ?? is there Torque and Wheel torque ???
Course not ...maybe...i dunno...who has the answer...i wanna know

 

All rolling roads and wheel dynos measure "wheel" torque that is then corrected using some "correction" factor to estimate "crank" torque.

Torque is the only thing that a dyno can measure. Horsepower is a calculated number based upon torque figures.

I hope that this helps.

 

so do i have 154 at the crank, or at the wheels looking at my graph above?

 

You are correct that the only thing a chassis dyno measures is at the wheels and any "crank" numbers are ficticious unless they are done on a chassis dyno. You are incorrect that a dyno can only measure torque. An inertia type dyno like a DynoJet can only measure horsepower. It measures horsepower by measuring the change in speed over time of the rollers, which have a known mass. Torque is calculated using hp and rpm. If you use a load-type dyno like a Mustang, you can measure torque directly.

As far as CooperSi's dyno, it shows 145 whp. The "175" is made up by the dyno operator. Your peak torque occurs at about 4900 rpm where the measured power at the wheels is about 119. 119 * 5252 / 4900 = 128 lb-ft.

 

cheers andy .... laid my mind to rest now

 

Help me figure out what is going on here...

The red curve is the power that this particular dyno reads, and the green and blue are then arrived at by way of different equations based on the red, right? I see where on the graph you are getting 128 (peak of the red line), but that doesn't look like a torque curve to me. Is this because there is only one real (combined) power measurement? I would think the peak power at that 7k would represent hp. Lastly, what's the 5252 in your equation represent?

 

http://www.v8914.com/Horsepower-v-torque.htm

google is amazing.

 

That was a very interesting and informative article, especially for someone who doesn't work with this automotive stuff every day. Thanks for posting it!

dcmitchell

 

When you know what your looking for. I didn't know 5252 was a standard...I assumed it was just a number taken from the graph above. Thanks for the link.

Now I can figure out how many 550lb weights my car can pull up from the coal mine in an eight hour shift. If my calculations are correct, the mine manager's sure to give me that promotion now.