Video: 5.7 liter stroker V10 dyno'd.... - Page 4 - The Unofficial BMW M5 Messageboard (m5board.com)

VTen · 31st July 2008, 01:44

Jesus Christ!

Myke951 · 31st July 2008, 10:22

Quote:

Originally Posted by M5Ranger

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

Why dont you beelive it is built on the stock motor? The just bore out the cylinders, ad a crankshaft that allows more stroke and change the pistons... it is essentially the same block...

xraym5 · 31st July 2008, 13:58

Since there are Supersprint headers added to the Dinan stroker, I wonder what software is being used. If it is Dinan's there would be an increased emissions check engine light, since Dinan's software does not disable that. If software from a vendor other than Dinan's is being used, I wonder how it works with the throttle bodies and intakes, as Dinan has parameters on their software to enhance the functionality of these mods.

I am also curious about the Dinan warranty, with the Supersprint headers, section 2, race cats, and mufflers being added to the stroker. God forbid, but if something goes wrong with the motor and Dinan somehow thinks it is due to the headers, etc., who would have to pay?

r tuned · 31st July 2008, 19:03

I am assuming that the warranty wont void unless if the exhaust or headers were the reason behind the damage.

Blockdoc · 31st July 2008, 19:23

Quote:

Originally Posted by xraym5

Since there are Supersprint headers added to the Dinan stroker, I wonder what software is being used. If it is Dinan's there would be an increased emissions check engine light, since Dinan's software does not disable that. If software from a vendor other than Dinan's is being used, I wonder how it works with the throttle bodies and intakes, as Dinan has parameters on their software to enhance the functionality of these mods.

I am also curious about the Dinan warranty, with the Supersprint headers, section 2, race cats, and mufflers being added to the stroker. God forbid, but if something goes wrong with the motor and Dinan somehow thinks it is due to the headers, etc., who would have to pay?

Hi guys,
Visiting from the E39 side...

My guess is that the customer who brought headers, TBs etc to have them installed. THEN brought a stroked motor to swap out, is in a financial position to "not really care" about the warranty.

Regardless, this sound like one hell of a Beast!

Cheers,
Brian

M5Ranger · 1st August 2008, 05:25

Myke, intrinsically it is not the same motor. The stock (original) motor must be sent off to Dinan and they send you another motor (the stroker).
All motors have their intrinsic characteristics, reason why same stock motors dyno differently.

If this stroker motor was built on the original stock motor then all the prior dyno results and rwhp readings would be absolutely relavent. This is not so when you switch motors.

That is my point.

I'd like someone to explain for us the results from this dyno which measures from the rear hubs with tires off.
How does this compare with Dynojet and Dynodynamic units?
Also, why does the LCD screen on the dyno say flywheel power over the dyno graph?

I would like to be informed

Another point that I have been stuck on is this. There has been a described 50 rwhp gain from the SS headers and exhaust. I find that rather lofty.

Ranger

MCarRacr07 · 1st August 2008, 05:48

Thanks Will for the clarification

.
So in a nutshell...you installed a Dinan Stroker Motor in this M6 which already had a Full SuperSprint set-up and came up with these numbers.
I only have two questions: How your particular Dyno works as opoosed to a Dynojet....AND...any ECU upgrades for the E92 M3....I checked your site and did not see anything.
Thanks
S

Tiptronicsoldier · 1st August 2008, 07:16

Quote:

Originally Posted by M5Ranger

Myke, intrinsically it is not the same motor. The stock (original) motor must be sent off to Dinan and they send you another motor (the stroker).
All motors have their intrinsic characteristics, reason why same stock motors dyno differently.

If this stroker motor was built on the original stock motor then all the prior dyno results and rwhp readings would be absolutely relavent. This is not so when you switch motors.

That is my point.

I'd like someone to explain for us the results from this dyno which measures from the rear hubs with tires off.
How does this compare with Dynojet and Dynodynamic units?
Also, why does the LCD screen on the dyno say flywheel power over the dyno graph?

I would like to be informed

Another point that I have been stuck on is this. There has been a described 50 rwhp gain from the SS headers and exhaust. I find that rather lofty.

Ranger

To me, all the numbers stated seem ridiculously high because I've only dynoed my 6 on a dynamics and pulled 424rwhp with exhaust, ram air, no cf's, filters, and dinan software. IMO, I'd rather undershoot than overshoot, then again if I were a speed shop I'd want all the dyno numbers high. Shoot, if I had the cash to get a stroker, I'd go ahead and get that, along with headers, 3.91 rear end, and nitrous(fraction of what that stroker must cost). That would be my dream car right there

Myke951 · 1st August 2008, 07:51

Quote:

Originally Posted by M5Ranger

Myke, intrinsically it is not the same motor. The stock (original) motor must be sent off to Dinan and they send you another motor (the stroker).
All motors have their intrinsic characteristics, reason why same stock motors dyno differently.

If this stroker motor was built on the original stock motor then all the prior dyno results and rwhp readings would be absolutely relavent. This is not so when you switch motors.

That is my point.

I'd like someone to explain for us the results from this dyno which measures from the rear hubs with tires off.
How does this compare with Dynojet and Dynodynamic units?
Also, why does the LCD screen on the dyno say flywheel power over the dyno graph?

I would like to be informed

Another point that I have been stuck on is this. There has been a described 50 rwhp gain from the SS headers and exhaust. I find that rather lofty.

Ranger

Oh I always thought it was just another stock motor that they just bored out at a machine shop and added their crank and pistons... making it into a 5.7 which seems a plausible feat as it is a v-10 and has many cylinders for improvements... my stock 2.5L 944 turbo motor could have been made into a 2.7L from just boring it or a 3.0L from stroking and boring... .5L difference in only 4 cylinders makes it pretty plausible to get .7L outr of a v10... Can a dinan representative shed light on this?

DRM · 1st August 2008, 08:17

Quote:

Originally Posted by Myke951

Oh I always thought it was just another stock motor that they just bored out at a machine shop and added their crank and pistons... making it into a 5.7 which seems a plausible feat as it is a v-10 and has many cylinders for improvements... my stock 2.5L 944 turbo motor could have been made into a 2.7L from just boring it or a 3.0L from stroking and boring... .5L difference in only 4 cylinders makes it pretty plausible to get .7L outr of a v10... Can a dinan representative shed light on this?

'Not a Dinan rep, but 'been there and saw the motor being developed. Here's a good description of it from their website; including what internal components are changed: 6 Series*::*M6 (E63) 2006-2008*::*Engine Tuning*::*High Performance 5.7 Liter V-10 Engine It's definately a "core exchange" program. They sell you a completed 5.7 litre balanced and blue printed, tested on their engine dyno, motor; your 5 litre motor is returned to them.