I've used Desktop Dyno 2000 and 2003 in the past to help design a couple of my previous engines, but felt it was severely lacking in helping with turbo engines since the airflow is limitede to 1000cfm. I ordered DynoSim Advanced Engine Sim from ProRacing Sim last night as a discounted upgrade from Desktop Dyno.

Anyone fmailiar with the DynoSim Advanced? Are you able to sim twin turbo applications?

 

dunno if its as accurate to do this but
messing with Desktop dyno I always treated
the TT V8 setups like 2 four cylinders
then assume the output would be about double


BTW Monty will you adopt me?

 

Yeah, I kinda did the same thing with DD2000/3 but I'm just hoping that since this is a newer software package, not to mention more costly,and turbocharging is more prevalent than it was 5 years ago that it would be easier to model it.

LOL, thanks for the inquiry, but I've already got one and the wife is bugging me for #2.

 

I received the DynoSim Advanced with ProTools today. Not sure if it's 4-5 times better than the old DeskTop Dyno 2000/2003 was, but it's a good tool. I entered in all the variables from my old twin turbo SBC427 and it was within 1% of the actual dyno results across the rpm range. Very impressive.

 

Wow, thats sweet monty. Are their any other options besides DD and DynoSim? Dynosim looks a little expensive and I've heard DD isn't the best. Do SAE members get a discount? I think I've seen special offers for this program before but can't remember where.

 

I didn't think DD was that bad. I used to help come up with some cam profiles for my old SBC 427, both when it was NA and TT and they were always within about 2-3% of the actual dyno results.

I really didn't look at anything else. I just went to their website and they had an upgrade offer for users of DD.

If you've got anything you want to simulate, I'd be happy to run it for you.

 

9.4 to 1, vortec heads, 218/224 on 112 .528/.536 Comp Roller (XR269HR w/ 1.6 RRs), 1 3/4" full length hooker headers, RPM Aig Gap Manifold, 750 Vac. Secondary Demon, 3" exhaust w/ X-pipe and straight thru glasspacks.
There was an identical motor in this months Engine Master's, same cam non roller with 110 LSA. 493/500, roller tip rockers and 1" open spacer, that did 422hp.
I've been wondering what it could do with a roller 230/236 on 110 .544/.555 (Comp XR282HR w/ 1.6 RRs) with current compression and with 10 or 10.5-1. My conservative estimate for that setup is 455hp. Based on a buildup I've seen with the same cam non roller 523/523, roller tip rockers and 10-1 that made 440hp.

 

Shoot that engine master's combo was with an EWP and no accessories.

 

Have you tried Engine Analyzer Pro. Or even the basic Engine Analzer is in a different league that DD.

 

I tried EA Pro back in 2001/2002 and didn't really see any difference between it and DD2000 at the time, at least in terms of comparing simulations against actual dyno results. As I mentioned, with the proper, accurate data (including actual flow, cam timing, CR, etc) the predicted/simulated hp and tq was within 2-3% of what was achieved on the Superflow.

 

If u get bored enough can u run mine?
If yes should i post my parts/combo here or send IM?

Curious. cardo0

 

Your preference. But I won't be able to do it until tomorrow morning.

 

Hey thx big guy. U got mail.

No hurry so anytime is appriciated.

cardo0

 

ok I hate for this to turn into a big open can of worms but...
could you run my avatar pleeze
/________________
\

at your leisure of course
I'll post the specs here in case anyone else is interested

4 inch bore 3.48 stroke
6 inch rods
8.5 static compession
mech roller .630/.630 net lift. cam specs @ .050 17/57 int 69/13 exh
brodix T1 227 cnc .200 .300 .400 .500 .600 .700
intake 154 223 270 303 312 316
@28" exhaust 116 150 185 208 219 227

fast xfi with wilson 105MM TB 1.750 primary headers
and of course the ceramic bearing t-64's

i suspect the cam is a little too much but it makes 5lbs by 3200rpm
and sees 15lbs at around 6k
tuner says the turbos will max out at around 30 psi or so

Monty u da man

 

I assumed these were 350/355 ci engines and considered them as having open exhaust. If you have any airflow numbers for those heads, I can get it more accurate.

..............Engine Master...........KK 218/224..........KK230/236 10.5:1 CR
RPM.........HP..........TQ............HP ........TQ..........HP........TQ
1000........57..........302...........58 ........307.........53.........277
1500........104.........362..........104 .......364.........98.........343
2000........154.........406..........155 .......407.........149.......391
2500........210.........441..........209 .......439.........204.......429
3000........255.........447..........253 .......443.........248.......434
3500........300.........450..........299 .......448.........299.......448
4000........344.........451..........342 .......449.........349.......458
4500........379.........443..........375 .......438.........392.......457
5000........407.........427..........402 .......422.........426.......448
5500........423.........404..........412 .......394.........455.......435
6000........419.........367..........402 .......352.........469.......411
6500........401.........324..........383 .......310.........472.......381
7000........358.........268..........333 .......250.........446.......334

 

Assumed you are running full exhaust and mufflers..

RPM.....HP......TQ
1000....76......400
1500....131....459
2000....184....483
2500....225....472
3000....269....471
3500....300....450
4000....328....431
4500....339....396
5000....331....348
5500....303....290
6000....271....237

 

I assumed your throttle body flows 1500 cfm @ 1.5 inHG. I assumed a combined island flow of 90 cfm, as the center of the island for peak efficiency (75%) is about 45 lbs/min at a Pressure Ratio of 2.0, based upon your 16 psi. I figured the combined surge flow to be about 16 cfm, but it doesn't look like you're anywhere near the surge line. I included your boost limit of 30 psi, and an intercooler efficiency of 30% as it looked like you are running an air/air based upon your avatar picture.

RPM.....HP........TQ
1000....77........407
1500....264......924
2000....580......1523
2500....517......1087
3000....565......989
3500....637......956
4000....709......931
4500....781......912
5000....839......881
5500....889......849
6000....917......803
6500....918......742
7000....897......673

 

DOH i forgot the IC
its a custom 4" spearco unit with 2.5 inlets and 4"outlet
dunno if it helps but on a datalog run around town
on a 45 degree day my IAT's at 15 lbs were 52 degrees or so
BTW the radiator is in the bed (ran outa space up front)
although the numbers you posted are scary enough
especially since the truck weighs 2490
hope i can make it to maxton in the spring

 

Wow, the Engine Master's combo came out almost exactly. I can't believe I'm giving up power to that combo though, the spacer and 110 lsa worth that much? I've got the rollercam and full roller rockers to boot. Mine's a 350 and their's a 355. Here's Vortec flow numbers from carcraft.com.

 

Oh Baby, that a bunch more torque than i expected. Looks like i built an engine for a heavy car or truck rather than a vette. There must be plenty of tuning to do as right now it won't even spin the tires - 28" though but through 3.70 gears. But it still pulls strong at 70mph when i stomp on it.
This will help me choose a shift point. 5200-5300rpm maybe? Torque is high all the way. I think it matches up ok with my wide ratio Borg-Warner 4sp.
Was hoping for a little more hp and think now maybe the next step bigger cam would have been an improvement. I can see now where this DD can help choosing a combo that fits and pay for itself.

You guessed right on with the exh sys. Funny i had typed that in then deleted before sending as suspected not needed.

Thx again, cardo0