After some time using the CamQuest 6 freeware and old fashion hand calculation, I decided to upgrade to DynoSim5 Engine Simulation. While waiting for the CD to arrive I would like to have your comments about this simulation tool …. or other similar software tools.

http://www.proracingsim.com/dynosimmainpage.htm

Arne

 

well i have 2003 and its an good way to see if your even in the ball park of what you want to acheve with your build. an lot cheaper then buying an bunch of parts and doing it that way. im sure others have there opinions about this.

its not to the T but i would say + or - 10% probably witch is not bad

Ryan

 

I use it quite a bit along with the Drag Sim to put the motor into a car and test out track times. It is actually pretty accurate if the information you enter is accurate.

 

It's a useful tool - but it's definitely garbage in, garbage out. Cam models have to be very complete with opening degrees, etc. and flow models must be real-world and not from the manufacturer's website.

It's also a good idea to benchmark every once and a while with a real-life run...and of course always apply common sense to the results. If you've got the experience to look at an engine config and guesstimate the power levels with some reasonable accuracy, then you'll do fine with this.

 

Discussion about it here:
http://www.chevelles.com/forums/showthread.php?t=269172

 

When we were evaluating this product we did a 2 part series on Horsepower TV with it. I went to Nashiville where they do there filming and we assembled a 383 sbc motor and I entered all the specs from the build. Then, the next week Joe brought the motor here to Compcams and we dynoed it to show how it compared to the computer simulation. It was with-in 6 horsepower on that test. What was funny was Joe gave me the wrong specs on the heads and it was off by quite a bit, so I called the head manufacturer and they gave me the real flow numbers. After entering them we were with-in the 6 horsepower just quoted.
Also, our cam designer gave me a group of lobes that he said would be great for my engine and I used this program to pick the best ones. I flowed the heads and used the actual numbers, too. After all was said and done I ran the simulation through the Dragsim software with all of my car specs and compared to the track times I ran with it and it is within a .10 on time. I was pretty amazed. Again everything matters. You have to enter the exact weather conditions at the time of the run, too.

 

Thank you guys for posting interesting information about the topic. Hopefully the DynoSim5 Engine Simulation program is of reasonable good quality for my purpose and know there will be functions I could wished had been much better. One can not expect full blown scientific simulation software for $100. We are extensively using computer simulation programs at work to cut back development costs thru the last 10 years. I am looking forward to simulate different engine setups during long winter evenings to come.

Arne