Help simulate the 4.0 in Engine Analyzer Pro
Posted: December 9th, 2008, 9:00 am
Okay I may be biting off more than I can chew here so I wonder if any one else wants to help.
Engine Analyzer Pro (EAPro) can be found at http://www.performancetrends.com/ they have a trial version.
To give a great example of what i can use help with: "Bearing size" is a coefficient that EAPro calculates (you'll have to get the program to really see what I mean) it's a coefficient based off the number and size of all short block bearings. For EAPro to calculate the number it needs the numbers of cam, rod, main, bearings (that's easy enough) and the diameter and width of each one as well (Micrometer time)! I can go measure these and I will if no one wants to help.
I could also use the total specs of the factory Cam (or cams if you're up to it, there are a few variations that would be interesting). And the same complete specs for some of the most popular aftermarket Cams.
Again check out EAPro to see we're not just talking about centerline, lift and duration here. There are 15 fields for a Cams Intake and the same 15 for exhaust!
Here's another one, in Cam/Valve Train specs, there's a radio button for "Calculate Valve train dynamics", and "see specs for dynamics" which allows you to input the specs including the weight of things like Springs and pushrods etc. You could spend half a day with a postal scale alone just gathering this data.
What am I going to do? I am looking at flow testing all the air and exhaust components to get accurate CFM numbers for things like both old and new Intake runners, ports (on Renix, 7120 and 0331 heads, as well as mild and heavilly ported heads), Exhaust which will allow EAPro to caluculate a discharge coefficient for every part of the intake and exhaust system. The TB (stock and bored and ported/bored).
I don't even have adaptors made to hook up some of this stuff to the flow bench yet, so my plate is full (and like I said I might be biting off more than I can chew already). It actually calculates a discharge coefficient based on not just CFM, but port area (which gets velocity), which means a much more realistic torque curve can be generated... Very impressive.
We could put approximate numbers in there or flow numbers from other people's claimed head flows, but the problem is they wont be all from the same source, and in some cases no one has ever even flowed them. That road definitely wont lead to accuracy once you start throwing mods into the mix.
Who knows the total CFM passed by the Stock factory exhaust system from the down pipe to the tail pipe? What you don't know? Yeah me either.
Engine Analyzer Pro (EAPro) can be found at http://www.performancetrends.com/ they have a trial version.
To give a great example of what i can use help with: "Bearing size" is a coefficient that EAPro calculates (you'll have to get the program to really see what I mean) it's a coefficient based off the number and size of all short block bearings. For EAPro to calculate the number it needs the numbers of cam, rod, main, bearings (that's easy enough) and the diameter and width of each one as well (Micrometer time)! I can go measure these and I will if no one wants to help.
I could also use the total specs of the factory Cam (or cams if you're up to it, there are a few variations that would be interesting). And the same complete specs for some of the most popular aftermarket Cams.
Again check out EAPro to see we're not just talking about centerline, lift and duration here. There are 15 fields for a Cams Intake and the same 15 for exhaust!
Here's another one, in Cam/Valve Train specs, there's a radio button for "Calculate Valve train dynamics", and "see specs for dynamics" which allows you to input the specs including the weight of things like Springs and pushrods etc. You could spend half a day with a postal scale alone just gathering this data.
What am I going to do? I am looking at flow testing all the air and exhaust components to get accurate CFM numbers for things like both old and new Intake runners, ports (on Renix, 7120 and 0331 heads, as well as mild and heavilly ported heads), Exhaust which will allow EAPro to caluculate a discharge coefficient for every part of the intake and exhaust system. The TB (stock and bored and ported/bored).
I don't even have adaptors made to hook up some of this stuff to the flow bench yet, so my plate is full (and like I said I might be biting off more than I can chew already). It actually calculates a discharge coefficient based on not just CFM, but port area (which gets velocity), which means a much more realistic torque curve can be generated... Very impressive.
We could put approximate numbers in there or flow numbers from other people's claimed head flows, but the problem is they wont be all from the same source, and in some cases no one has ever even flowed them. That road definitely wont lead to accuracy once you start throwing mods into the mix.
Who knows the total CFM passed by the Stock factory exhaust system from the down pipe to the tail pipe? What you don't know? Yeah me either.
