grumpyvette Posted January 6, 2004 Share Posted January 6, 2004 YOU DO GET WHAT YOU PAY FOR BUT IF YOUR JUST LOOKING TO GET TRENDS THE $40 DD-2000 IS A GREAT DEAL HERES SOME CHOICES http://www.rapidline.com/pcver.htm http://www.donsautopages.co.nz/software.htm http://www.motionsoftware.com/minigide.htm http://www.proracingsim.com/ http://www.engineprosoft.com/ http://www.virtualengine2000.com/ http://www.themustangshop.com/downloads.cfm just keep in mind software is good for showing potential trends, and pointing out flaws in combos,ITS NOT RELIABLE FOR PREDICTING ACTUAL RESULTS BECAUSE THE QUALITY OF THE ENGINE PARTS,TOLLERANCES.AND CARE OF ASSEMBLY plus the limits of the software itself make its results only an educated GUESS Quote Link to comment Share on other sites More sharing options...
Guest jeff1216 Posted January 7, 2004 Share Posted January 7, 2004 so...of the ones listed....wich is the best? Quote Link to comment Share on other sites More sharing options...
Z-TARD Posted January 19, 2004 Share Posted January 19, 2004 I just downloaded the Virtual Engine Dyno last night. Not sure if I like it or not. There seems to be a problem with the cylinder heads section. I put in the specs for my Topline cylinder heads, and if I calculate the HP using flow numbers I get 304 ft lbs for tourque and 362 horsepower. When I switch it to calculate using the port sizes, it jumps up to 420 Ft lbs and 540 horsepower, which is closer to what I'm expecting with my combo. Has anyone had similar results using this one? I triple checked the flow numbers just to make sure they were entered right. If anyone wants to double check, here's a list of the components I'll be using. Eagle ESP cast steel internally balanced 383 crank. 2.10 rod, 2.45 main. #103507501 Eagle ESP 6" Forged H-beam connecting rods (floating pin) GM 3970010 4 bolt main block. 9" deck height. Comp Cams hydraulic roller retro conversion #853-16 CAT Stainless steel roller lifters 1.55 ratio 3/8 stud JE SRP forged flat top pistons #138093, 1.125 copression height -5cc dome. 416 grams Pro Topline aluminum 23 degree 220cc intake cylinder heads 72cc chamber, 2.02 intake 1.6 exhaust valves 80cc exhaust #123-2000-20 Flow rates@28" water Intake Exhaust .100" 70.74 56.90 .200" 146.41 100.99 .300" 204.62 156.94 .400" 249.84 176.85 .500" 264.62 186.34 .600" 272.23 190.13 .700" 282.08 194.87 Holley Street Avenger 770 cfm carburator #510-0-80770 Wieand X-celerator intake maniflod (X type single plane with split runners and divider plate in plenum) 1800-7300 rpm range. #925-7513 Still looking for camshaft. Virtual Dyno was tested with Comp Cams Magnum Hydraulic roller retro fit 270HR(any other cam suggestions are more than welcome) Thanks for the Links, Grumpy Mike Quote Link to comment Share on other sites More sharing options...
Turbo Meister Posted January 19, 2004 Share Posted January 19, 2004 Mike I used your listed specifications in my pro racing sim dyno calculator. The program allowed me to input your exact cylinder head flow as provided in addition to a calculated 10.3 compression ratio ( same as my 383 chevy ). The dyno indicated 451 hp at 5500 rpm and 470 ft lbs torque at 4000 rpm utilizing a hyd roller cam with 230/236 duration and .552 lift. This power level assumes optimized fuel and timing settings. I also have the pro sim drag program, which lists an early Z, into which any type of engine can be installed. In order for me to give you quarter mile results for your engine the program requires specific info on: vehicle weight, transmission, stall speed, axle ratio, tire diameter, launch rpm, shift points,track conditions and temperature. These programs feature colorful charts and graphs and are fun to experiment with. The drag program even measures g forces, drag in lbs at every level along the race course, and can input various tire slip equations. I have found that the quarter mile times for my engine combination in my Z is somewhat optimistic but doable with more suspension work and better tuning. The programs basically show you what your engine and vehicle should be capable of doing if everything is worked out. I doubt I will reach that point but I may come close. Hanns. Quote Link to comment Share on other sites More sharing options...
Z-TARD Posted January 19, 2004 Share Posted January 19, 2004 Thanks, I was really going to be dissapointed if I spent all this money for a 360 horspower motor. 450 is about what I've been targeting for horsepower levels. I realize that the practical application is often much different than the thoery, but it's nice to have a ballpark estimate of what I'm going to have. Mike Quote Link to comment Share on other sites More sharing options...
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