Video: 5.7 liter stroker V10 dyno'd.... - Page 3 - The Unofficial BMW M5 Messageboard (m5board.com)

Black M5 · 30th July 2008, 08:30

Quote:

Originally Posted by IndyredNJ

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.

lol very true and do it fast before the dinan bashers come in

Rab Dog · 30th July 2008, 08:38

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

Ranger I agree with you 100% both motor are two diff Animals no reason to compare stock motor headers and exhaust does not make sense.

I hope the guys at Turner can explain this clearly because I dont even know if this is a Dinan stroker or a Turner??

What is going on here please give us all the exact details of all components in this 5.7L mystery engine!!

NobleM400 · 30th July 2008, 09:06

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

What I think you're missing is Bonehead is probably someone who lives in the real world. Because of this, power gained or lost with respect to monies spent is an important metric to consider when looking at potential mods.

He obviously knows that these are two different motors and that the power produced by the stock motor has no bearing on the power produced by the stroker.

However, this situation appears to me like it would be a relatively common occurrance for folks considering a stroker kit. I would hazard to guess than many of them would already have mods on their stock system (like headers & exhaust), which they would swap over to the new motor.

So what Bonehead seems to be saying is that this person paid XXX amount of money, and gained 87hp to the wheels on the vehicle. Seems pretty straight forward to me, if I'm understanding this correctly. Bonehead?

xraym5 · 30th July 2008, 15:18

I think a calculated RWHP from a pull on a Dyno Jet in an M5/M6 with the stroker as the ONLY mod would answer a lot of questions. People would then have a Dinan-independent result from a third party, which might be valuable info in helping them decide whether or not to go the stroker route. A pre-stroker pull on the same car when stock with the same Dyno Jet and same conditions would be helpful (as NobleM400 suggested) as well in determining if a net increase of XX RWHP to the car is really worth the $$$$$ for the rare member considering the stroker.

willturner · 30th July 2008, 17:02

Guys,

I guess I should have explained a little before I posted - sorry guys I was excited to get the video up (it was a lot of work)

Anyway - here is the deal, its pretty simple

1) Our customer dropped off his M6 to get baselined - That is the yellow line on the dyno graph - showing 430hp (max). 430 on our dyno is about what every stock M5 or M6 makes on our dyno. That is horsepower at the wheels, to get it at the crank (on our dyno) you add 15 or 16 percent - which would equal about 500 crank horsepower again. The most from a stock M6 we have seen is 439 at the wheels btw.

2) Then the customer decided he wanted the full Supersprint exhaust and software... after the install we dynoed the car again. That is the black line on the dyno (you can see that the torque gain was huge compared to stock) The M6 with the Supersprint system made 480 rear wheel horsepower (which is about 550 hp at the crank)

3) Recently the customer had us install a 5.7 stroker motor- (with enlarged throttlebodies and modified airboxes) -which the customer provided -so I dont know the cost or the specific internal components. The Supersprint headers, cats and mufflers were retained We did the install here and then stuck it on the dyno. The blue line is the stroker motor results. The most impressive part (to me) is not just the horsepower but the torque , look how much more it makes over stock...On our dyno the stroker made 564 rear wheel hp or about 648 crank horsepower.

I will share some driving expereinces with the board soon but dont have time to do so now. The car is pretty impressive... actually its unbelievable.

-Will

r tuned · 30th July 2008, 17:17

Will,

Thanks for your video's and clarification. I am just wondering if you have any plans in the future to offer this stroker. My other questions, is there a way you could find out what exactly was added to the stroker kit by the customer?

Thanks and Good luck.

Gustav · 30th July 2008, 18:38

+130 RWHP. That is normally aspiráted. I love it. Please get it up next top a Ferrari 599 GTB

EuroCarFan · 31st July 2008, 00:08

Quote:

Originally Posted by willturner

Guys,

I guess I should have explained a little before I posted - sorry guys I was excited to get the video up (it was a lot of work)

Anyway - here is the deal, its pretty simple

1) Our customer dropped off his M6 to get baselined - That is the yellow line on the dyno graph - showing 430hp (max). 430 on our dyno is about what every stock M5 or M6 makes on our dyno. That is horsepower at the wheels, to get it at the crank (on our dyno) you add 15 or 16 percent - which would equal about 500 crank horsepower again. The most from a stock M6 we have seen is 439 at the wheels btw.

2) Then the customer decided he wanted the full Supersprint exhaust and software... after the install we dynoed the car again. That is the black line on the dyno (you can see that the torque gain was huge compared to stock) The M6 with the Supersprint system made 480 rear wheel horsepower (which is about 550 hp at the crank)

3) Recently the customer had us install a 5.7 stroker motor- (with enlarged throttlebodies and modified airboxes) -which the customer provided -so I dont know the cost or the specific internal components. The Supersprint headers, cats and mufflers were retained We did the install here and then stuck it on the dyno. The blue line is the stroker motor results. The most impressive part (to me) is not just the horsepower but the torque , look how much more it makes over stock...On our dyno the stroker made 564 rear wheel hp or about 648 crank horsepower.

I will share some driving expereinces with the board soon but dont have time to do so now. The car is pretty impressive... actually its unbelievable.

-Will

So who made the stroker motor? If I understand you correctly, the customer provided the motor and it came with the throttle bodies and larger air boxes. If it was Dinan's you would have seen Dinan's "D" logo all over those things. Inquiring minds want to know (at least me)!

Nevertheless, awesome results and would love to see comparison runs of this car with other stock or modified M6s. Is the owner a member of this board? Probably not but had to ask.

Thanks Will.