In case you missed it on other forum. I'd say that "stroker" might be able to keep up with my Dinan S/C'd E39 M5

http://www.m5board.com/vbulletin/e60...er-action.html

 

Thanks for the link, wow, it isn't even a comparison. Very impressive NA power, but it comes with a hell of a price tag. Can't wait to see what it puts down on a dynojet to put some questions to rest.

How much power is your SC E39 putting down?

 

I must say, 'not a believer in "roller" dyno rw results when it comes to proving performance gains. At any given time, even intra-day (same car; same dyno; same operator; pre and post "pulls"); especially Dinan mods which are all developed/tested on their very expensive, custom/proprietary engine dyno; which uses fluid dynamics technology; the same type of measurement used by virtually all professional race car engine builders. These devices can pinpoint engine power output, at the crank, under an infinate variety of simulated conditions. Those engine builders don't give a "rat's azz" what rw power output is. Why?? 'Cause rw dyno's have to assume a drivetrain loss %; which can vary from car to car, gear to gear, and even different RPM levels within each gear; not to mention there's no "roller" rw dyno made that can duplicate "at speed" airflow, or be run in a 1:1 gear @ max power RPM's. The "rollers" can't handle those kinds of wheel speeds. Almost all professional race engine builders use Dynapak dyno's, combined with their proprietary mapping software, plugged into the car's engine control unit, for fine tuning. But that's it.

All that said, it's decidedly impractical for street car owners to test their power gains by taking their cars to a race car engine builder, and paying big $$$ for engine removal/testing/re-install. So, we're left with what is, at best, a power output "educated guess" on "roller dyno" testing; translating via drivetrain loss "standard" (but highly variable) assumptions, to actual engine output (and most people know that base factory engines can vary in power output by as much as +/- 5%; a hellava spread difference on a 400 - 600hp car model). BTW, professional racing series sanctioning authorities also do their power "compliance" testing on engine dyno's. RW measurements are irrelevant to those folks.

But, knowing that many high performance car mod junkies "live and die" by rw dyno results, I asked Dinan to rw dyno my car when I picked her up there in 12/06. They graciously obliged and here is the report I wrote and posted: http://www.m5board.com/vbulletin/e39...-write-up.html . Bottom line is 530rwhp, in 1:1 5th gear, @ 7k RPM.

'Sorry for the long winded answer to your question. After many years of being "educated" about realities of measuring engine power output, by some of the very best engine builders on the planet, 'tend to get on my "soapbox" concerning unrelenting obsession with "bench racing" over rw dyno results. While not perfect, IMO, best way to compare/discover relative merits of any particular mods, on any particular car model, is side by side run's with "like" cars. Or, as some folks do, using GPS based dataloggers, on a before/after mod basis, to compare time/distance/speed differences.

 

40 grand for 100 hp!! WOW

 

I understand your perspective regarding the dyno. The problem is, other than taking it to the strip. it is the best way to at least get some relevant info as to the changes the upgrades made. There are a ton of variables of course, and they vary from dyno to dyno.

Looks like your car is making some healthy power.

 

I'd love to see the Dinan stroker go against an RD Sport stroker.

 

Walks the standard M5, that thing must pull hard, but 40g's is indeed much for 100 h.p.
Nice regardless.

 

No sir it is not $40K. When it is all said and done it is $50K. You need to get other goodies to attain the stated 628 bhp.
There is and additional core charge of $20 which must be paid before they get your motor.
Remember it is not $50K for the Dinan stroker but you must also forfeit your motor. I have always stated that if you could keep your motor it would be a fair deal.

There is no doubt this is a great motor and well researched. It is obviously faster. For me spending this much money I want stupid crazy horsepower.

I would want to see dyno results to pin down exact rwhp which has been a subject of much debate. I will say that I hope a shot of nitrous is NOT used (unknown to most of us) during the dyno.

Seeing the stroker M5/M6 run the 1/4 mile and trap speeds is very important.
Running valid daily competitors is improtant. Running a well modded M5/M6 will be very informative.
Run a C6 Z06 vette in a rolling start, 50 to 160 mph.

I would love to see an E39 M5 with a Dinan S3 package run the stroker.
Dan run the M6 stroker out by you. I would pay to see that.

Personally I would love for someone here in So. Florida to purchase a Dinan stroker. I want one near me to pursue and do rolling starts and run head to head 1/4 mile runs. I would run on motor and with nitrous to see the difference.
My M5 on motor with the bolt on mods I believe can be close but who knows. I give the stroker credit.

There is a question. As the thread reads it is stated that there was a problem initially with the air intakes and/or MAF units. As these issues were resolved the car apparently became monsteribly more powerful.
But come on, intakes in these cars at best mean 20 bhp gains.

Anyway that is all okay. Just let the stroker run.

Honestly I truly want to line up with a Dinan stroker. Let the stroker put forward what it has and I will do my best.
All in the spirit of competition.

Ranger

 

That is insane!!! 50k plus your motor...

 

Very impressive all motor power, but as stated above, WAY too expensive. I'll just do the watching of the vids

 

with the hit my portfolio took this year i shouldve just bought a stroker and enjoyed the money

 

Here's the Dinan stroker against a HPF M3, stock 997TT (with a driver that can't drive) and a Ford GT with unknown mods. The HPF M3 is a 6.85 second 60-130 car, which is about as fast as a Protomotive PE700, EVOMS GT700, or SG700 TT (all in the 580-600 rwhp range).

All in all the Dinan stroker is fast for a heavy car, but not what I could a very fast car overall. Looks nice, though.

http://www.youtube.com/watch?v=3VNgrzzzx4Y

 

That Interlagos Blue M5 looks great with the HRE P40's but $50k for the stroker? That's ridiculous! It got owned by the HPF M3 but the most impressive car in that video is the Ford GT! It reeled in the M5 towards the end like it was standing still!

 

The M5 had MAF problems in that movie. a non stroked tuned M5/M6 can take a stock 997TT

 

The price tag is insane but WOW