I see lots of great engine sim programs out there...Is there one available that does FI and set ups like that??? Most of what i see does carb engines..Mainly looking to 'sim' my engine and play with some numbers before i actually build it to see how close the #'s are...
Anyone recommend one??????
If someone has one, interested in trade of copy for something????
Thanks

 

Ok so i spelled DYNO wrong........Sorry, its too early into '04...My mind isnt warmed up yet!!!! :D

 

musta been a wild nite. :D

I donno enough about the sims... sorry.

 

Desktop Dyno 2000 is pretty good. :yesnod:

 

There are a few out there but they're really expensive.

I use Engine Analyzer Pro, which is over $600.

I does allow you to plug in a LOT of variables not available with Dyno2000.

You can choose from:

several FI intake manifold designs,
injector sizes, at what psi they're rated
plug in pressure settings,
coefficient of flow for the runners and intake manifold,
actual runner and intake flow numbers if you have them or calculate them based on port dimensions
plenum volume,
port lengths and shapes
average port diameters,
anti-reversion characteristics,
combustion chamber design,
absence/presence of swirl,
throttle body and air filter cfm airflow.

All the other factors too like
bore
stroke
piston rings and leakage rate
water pump
fan
rod lengths
piston skirt design
piston coated or not
windage
bearing size
valve sizes
specific head port flow both intake and exhaust
exhaust heated intake, if so, how much
specific camshaft timing numbers
inverted flank roller camshaft profiles
specific exhaust system (does my engine need 1-5/8", 1-3/4" or 1-7/8" headers?)
collector diameter and length, taper, etc.
conditions to test under (weather, barometric pressure, engine coolant temp, etc)

Comes with the specifics (including head flow numbers) of Pro Stock and Winston Cup engines, and others, etc.

Will calculate the optimum ignition timing your setup calls for or lets you plug in your own timing numbers.

The results can be graphed to give you a visual way to compare changes and has a feature to analyze your setup and will recommend where things need to be changed.

For example, I played with camsahft lobe seperation angle, trying everything from 106 to 114 in 2 degree increments. I then graphed them over each other to see how the different angles effected the torque and HP curve. Did the same thing with duration, injectors sizes, fuel pressure, etc.

It showed me, for example, that based on my curent intake and exhaust setup, going from my present 224/230 camshaft to a 230/236 hurt power across the board.

I could also compare cylinder heads to see how much, if any, improvement in power is made by plugging in the flow #s of many of the heads out there; the effect on velocity (one of the many things it measures) going to larger port head causes, etc. Made me realize that paying over $2,000 for 18 HP is not a lot of bang for the buck.

This is only a snapshot of what it can do. Great program and I run it for hours on end plugging in all sorts of different variables, but like I said, expensive.

Hope this helps.

Jake

On and on

It has built in calculators and tests and reads out well over 40 different engine characteristics.

Even has provisions for pugging in nitrous and turbo/superchargers


[Modified by JAKE, 2:03 PM 1/1/2004]

 

EA also makes a sportsman version which i use. It's usually p[retty damn close, however it does have some short comings. The Pro version is better, but you need to know the answer to a lot more variables, not to mention having to shell out about $600.