Video: 5.7 liter stroker V10 dyno'd.... - Page 2 - The Unofficial BMW M5 Messageboard (m5board.com)

Gustav · 30th July 2008, 01:19

Also, I saw on the video that the dyno was added directly on the axle, like Rototest. What is the deivetrain loss?

In anycase, did you do a baseline dyno when the M6 was completely stock?

M5Ranger · 30th July 2008, 05:57

Okay gentlemen I am confused.
First, bonehead why do you keep stating 84 rwhp? What am I missing?
Second, the 430 rwhp stock and 480 rwhp modded (SS headers/exhaust) have nothing to do with anything. The stroker is a different motor all together. The stock motor was not built on so that the earlier numbers would therefore NOT be relevant to the stroker results.

Now can someone explain the results of a DynoPack dyno. The results can not be the same as a Dyno Jet or Dyno Dynamics.

The number achieved of 564 rwhp equates to 685 bhp. I do not understand the numbers being thrown around.
This stroker well exceeds the Dinan stroker 611 or 625 bhp claims.
Does this motor have other internal goodies?

As I said initially, I am confused.

Regardless, lets see performance results. That is what really matters.

Cheers,
Ranger

T Bone · 30th July 2008, 06:01

Scribed.

alpywhite · 30th July 2008, 06:06

+1 with Ranger, The results are really intriguing when you gross in the driveline loss, but let's compare apples to apples on a Dynojet, plus see some performance results.

Alps

bonehead · 30th July 2008, 06:23

Wirelessly posted (iBone: Mozilla/5.0 (iPhone; U; CPU iPhone OS 2_0 like Mac OS X; en-us) AppleWebKit/525.18.1 (KHTML, like Gecko) Version/3.1.1 Mobile/5A347 Safari/525.20)

Quote:

Originally Posted by M5Ranger

Okay gentlemen I am confused.
First, bonehead why do you keep stating 84 rwhp? What am I missing?
Second, the 430 rwhp stock and 480 rwhp modded (SS headers/exhaust) have nothing to do with anything. The stroker is a different motor all together. The stock motor was not built on so that the earlier numbers would therefore NOT be relevant to the stroker results.

Now can someone explain the results of a DynoPack dyno. The results can not be the same as a Dyno Jet or Dyno Dynamics.

The number achieved of 564 rwhp equates to 685 bhp. I do not understand the numbers being thrown around.
This stroker well exceeds the Dinan stroker 611 or 625 bhp claims.
Does this motor have other internal goodies?

As I said initially, I am confused.

Regardless, lets see performance results. That is what really matters.

Cheers,
Ranger

87 comes from the text in the YouTube video. Agreed though that synod need to be done on a dynojet or similar and not the dynopak which is an unknown quantity here

hp99hp · 30th July 2008, 06:24

didn't the screen say flywheel hp?

darren_dallas · 30th July 2008, 06:43

Quote:

Originally Posted by M5Ranger

Okay gentlemen I am confused.
First, bonehead why do you keep stating 84 rwhp? What am I missing?
Second, the 430 rwhp stock and 480 rwhp modded (SS headers/exhaust) have nothing to do with anything. The stroker is a different motor all together. The stock motor was not built on so that the earlier numbers would therefore NOT be relevant to the stroker results.

Now can someone explain the results of a DynoPack dyno. The results can not be the same as a Dyno Jet or Dyno Dynamics.

The number achieved of 564 rwhp equates to 685 bhp. I do not understand the numbers being thrown around.
This stroker well exceeds the Dinan stroker 611 or 625 bhp claims.
Does this motor have other internal goodies?

As I said initially, I am confused.

Regardless, lets see performance results. That is what really matters.

Cheers,
Ranger

Juan,

The numbers are higher because of the supersprint headers, section 2, race cats, and mufflers.

Regards,

Darren

EuroCarFan · 30th July 2008, 06:51

Quote:

Originally Posted by M5Ranger

Okay gentlemen I am confused.
First, bonehead why do you keep stating 84 rwhp? What am I missing?
Second, the 430 rwhp stock and 480 rwhp modded (SS headers/exhaust) have nothing to do with anything. The stroker is a different motor all together. The stock motor was not built on so that the earlier numbers would therefore NOT be relevant to the stroker results.

Now can someone explain the results of a DynoPack dyno. The results can not be the same as a Dyno Jet or Dyno Dynamics.

The number achieved of 564 rwhp equates to 685 bhp. I do not understand the numbers being thrown around.
This stroker well exceeds the Dinan stroker 611 or 625 bhp claims.
Does this motor have other internal goodies?

As I said initially, I am confused.

Regardless, lets see performance results. That is what really matters.

Cheers,
Ranger

Hey Juan,
Not sure why you think the 480 Supersprint+ numbers don't apply because you can have the stroker motor with the full Supersprint headers/exhaust system (or any other brand) added. Having the stroker motor doesn't mean you can't have headers. Also, the bottom right of the dyno chart says 5.7 Liter motor with Supersprint system.

That aside, I'm curious about the Dynopak too. If it's attached directly to the drive axle does that mean that the parasitic losses to the wheels are reduced cause you don't have to account for that unsprung weight, which means the numbers are actually higher than real rwhp numbers on a dynojet or Dyno Dynamics?

And yeah, whose stroker is this???

Come on Will. You can't post something like this without the full details. Stop teasing us!

M5Ranger · 30th July 2008, 07:58

Okay I say again, the stroker motor results have NOTHING to do with the stock motor results and the stock motor with mods! They are two different motors!!!
I repeat myself which pisses me off, the original motor has no relevance. The original motor may have been a monster but it is at Dinan and TMS has whatever Dinan sent them. Remember the issue of the core?
Why can anyone not realize this!!!!!!
Who the hell cares about the SSheaders and exhaust.
This motor was NOT built on the stock motor.

I did notice that on the dyno graph it said flywheel hp. This claimed 564 rwhp to me I believe is bull.

Submit more proof, not a graph that you can't read the details.
I SAY AGAIN, I DO NOT BELIEVE 564rwhp.

Ranger

IndyredNJ · 30th July 2008, 08:11

Okay Will please post more consumable data explaining extrapalations because this could get ugly. We are all waiting for this information out of curiosity and I know some have been contemplating and your hands on experience could help.