Big Slice of Reality Pie., 2056 D-jet Dyno run |
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
Big Slice of Reality Pie., 2056 D-jet Dyno run |
Olympic 914 |
May 6 2021, 08:25 AM
Post
#1
|
Group: Members Posts: 1,699 Joined: 7-July 11 From: Pittsburgh PA Member No.: 13,287 Region Association: North East States |
Just got back from having the teener run on a Dyno.
Good and not as good as I expected. Was hoping for at least 100 Hp, didn't make it. This run was on a Mustang Dyno, allegedly a Dynojet Dyno reads from 12~15% higher. First the good. Runs were extremely consistent. the three runs printed pretty much right on top of each other. Torque was way up there above 95 tq from 3000 to 4500. with no real dips. HP numbers were very consistent with a nice smooth line from 2000 to over 4500 Now the bad Max HP was only read at 88 Hp and max torque was 100. If I add the 12-15% it comes to 100 Hp. But it is what it is. Build is 2056 D-jet, Heads by HAM RS+, 8.6 comp. Raby 9590 cam, SS HEs with Triad muffler. I Have adjusted the MPS to what seems to run best for this car. This car runs great and I just wanted to know what it was putting out, Not really planning to try to tune it for more power. Reliability is the key. and I am so far happy with that. Dyno sheet added (Date/time is wrong, 5/06/21 8:35am) |
mb911 |
May 6 2021, 05:29 PM
Post
#2
|
914 Guru Group: Members Posts: 7,161 Joined: 2-January 09 From: Burlington wi Member No.: 9,892 Region Association: Upper MidWest |
Well I can tell you this. Though the Triads and any aftermarket muffler may sound great that does not mean there more HP being produced. If you look at basic flow dynamics the Triad is not a very efficient path. That said each muffler will provide HP at different rpm ranges and basically you will see wild differences. I will tell you that the factory mufflers got it right. Yes they are quiet but the 2.0 muffler is almost identical to a 911 muffler of the same ish vintage and those provide some of the best numbers of any muffler out there.
There are also a bunch of bogus numbers out there. I have been involved in the hp hunt for over 20 years and have litterly sold thousands of systems. All that said I believe your exhaust system to be partly at blame. But I firmly believe that at least for me the sound is so important to the sports car experience you need that to work over almost anything else. Sounds, smells, feel is what these cars about. Best of luck on the HP journey. |
DRPHIL914 |
May 7 2021, 09:00 AM
Post
#3
|
Dr. Phil Group: Members Posts: 5,808 Joined: 9-December 09 From: Bluffton, SC Member No.: 11,106 Region Association: South East States |
Well I can tell you this. Though the Triads and any aftermarket muffler may sound great that does not mean there more HP being produced. If you look at basic flow dynamics the Triad is not a very efficient path. That said each muffler will provide HP at different rpm ranges and basically you will see wild differences. I will tell you that the factory mufflers got it right. Yes they are quiet but the 2.0 muffler is almost identical to a 911 muffler of the same ish vintage and those provide some of the best numbers of any muffler out there. There are also a bunch of bogus numbers out there. I have been involved in the hp hunt for over 20 years and have litterly sold thousands of systems. All that said I believe your exhaust system to be partly at blame. But I firmly believe that at least for me the sound is so important to the sports car experience you need that to work over almost anything else. Sounds, smells, feel is what these cars about. Best of luck on the HP journey. Ben, @mb911 Along those lines, with your experience in this area both in manufacturing them but the R&D end and testing, what do you think the result will be with my center location twin tip? it seems that this will be improved flow from what i had with the Triad. Phil |
mb911 |
May 7 2021, 09:56 AM
Post
#4
|
914 Guru Group: Members Posts: 7,161 Joined: 2-January 09 From: Burlington wi Member No.: 9,892 Region Association: Upper MidWest |
Well I can tell you this. Though the Triads and any aftermarket muffler may sound great that does not mean there more HP being produced. If you look at basic flow dynamics the Triad is not a very efficient path. That said each muffler will provide HP at different rpm ranges and basically you will see wild differences. I will tell you that the factory mufflers got it right. Yes they are quiet but the 2.0 muffler is almost identical to a 911 muffler of the same ish vintage and those provide some of the best numbers of any muffler out there. There are also a bunch of bogus numbers out there. I have been involved in the hp hunt for over 20 years and have litterly sold thousands of systems. All that said I believe your exhaust system to be partly at blame. But I firmly believe that at least for me the sound is so important to the sports car experience you need that to work over almost anything else. Sounds, smells, feel is what these cars about. Best of luck on the HP journey. Ben, @mb911 Along those lines, with your experience in this area both in manufacturing them but the R&D end and testing, what do you think the result will be with my center location twin tip? it seems that this will be improved flow from what i had with the Triad. Phil Phil, In your case the internals are based off the original 911 muffler design.. I let the Germans do the engineering (IMG:style_emoticons/default/biggrin.gif) in essence like the old sport modification to the factory muffler. You will see positive results. That said my input was not meant as a marketing thing but rather just an informative input based reply.. My number one belief is if our cars didn't smell the way the do or sound the way they do we would never even drive them. That should be the focus. |
Lo-Fi Version | Time is now: 27th September 2024 - 10:00 AM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |