Curious to see what it’ll do. Can provide more cam specs if neededI looked all over the place for those flow numbers. I'll do that tonight and see what it comes up with.
If he kept the boost to a reasonable level (5-6) and the timing to mid 20's, he'd probably be ok on 93 pump if the water temps were under control.10:1 compression seems a little bit high for boost dont you think? I’d hate to restrict the car to just race gas or e85
Yeah, post the cam card if you've got it. I'll even screw around with some boost numbers.Curious to see what it’ll do. Can provide more cam specs if needed
I keep it at around 180 without ac around town. With ac depending on how hot the day is it’ll creep to the low 200sIf he kept the boost to a reasonable level (5-6) and the timing to mid 20's, he'd probably be ok on 93 pump if the water temps were under control.
you can work the loss as a percentage, but it wont be the same for each engine. An alternator that requires 15-20hp at RPM X is going to require that HP regardless of how many Gross HP are turning it. IE a 1000 hp engine is still going to suffer the 20hp loss, just like a 400hp engine was, turning the same alternator at the same speed. Does that make sense?Drivetrain loss is not static, it's a percentage which is typically calculated at 15% for a manual (on the high side). That gets us to 430. Typical total accessory lose is usually 15-25HP. These are on the high end, assuming the alternator is putting out 100 amps plus, full RPM on the water pump and power steering pump, ect.
I think you might have misunderstood me, only the driveline is a percentage. Driveline loses are primarily frictional losses which increase as power output through the driveline increased. The accessory loss I stated of 15-25HP is the typical measured accessory loss of the alternator, ect on a Foxbody, which is static. Basically the same thing you just said, I think.you can work the loss as a percentage, but it wont be the same for each engine. An alternator that requires 15-20hp at RPM X is going to require that HP regardless of how many Gross HP are turning it. IE a 1000 hp engine is still going to suffer the 20hp loss, just like a 400hp engine was, turning the same alternator at the same speed. Does that make sense?
Terminator xI just updated my DynoSim6, so I'll get that info back tonight. Ive got some stuff to do.
As a side question, what ECU are you running?
Yeah the ign timing is way off from what it realistically would be, lost like 15 horse bumping up the timing to 31 if I remember correctly.What I found using a Comp XFI236HR-14 236/248 Hydraulic Roller Cam ( https://www.compcams.com/xfi-computer-controlled-236_248-hydraulic-roller-cam-for-ford-351w.html ). The Comp grind is only .579 lift. I stretched it to .608 for these tests.
The first one is at straight up degrees. The second is -4 from suggested. Also, note the ignition timing...I wish the simulator would let you pick a better combustion chamber. They give you 3 to choose from from each (flat, wedge and a Hemi/Pentroof) The ignition timing setting is on auto in the Sim. Your results obviously varied. I entered the flow numbers at each point of lift off the TFS spec. Spec'd a high performance open plenum manifold with a 1000cfm throttle.
The last one is advanced 4 degrees. Look at the meat in the middle. That's got street car written all over it.
Looks like this page is reversing the order of the pics as I post them. Highest number is -4, middle number is 0 and lowest peak is +4, but the middle of the power is the best at +4, by far.
Wouldnt advancing or regarding the cam just change where the car makes power and not necessarily how much power The car makes?What I found using a Comp XFI236HR-14 236/248 Hydraulic Roller Cam ( https://www.compcams.com/xfi-computer-controlled-236_248-hydraulic-roller-cam-for-ford-351w.html ). The Comp grind is only .579 lift. I stretched it to .608 for these tests.
The first one is at straight up degrees. The second is -4 from suggested. Also, note the ignition timing...I wish the simulator would let you pick a better combustion chamber. They give you 3 to choose from from each (flat, wedge and a Hemi/Pentroof) The ignition timing setting is on auto in the Sim. Your results obviously varied. I entered the flow numbers at each point of lift off the TFS spec. Spec'd a high performance open plenum manifold with a 1000cfm throttle.
The last one is advanced 4 degrees. Look at the meat in the middle. That's got street car written all over it.
Looks like this page is reversing the order of the pics as I post them. Highest number is -4, middle number is 0 and lowest peak is +4, but the middle of the power is the best at +4, by far.
Wouldnt advancing or regarding the cam just change where the car makes power and not necessarily how much power The car makes?
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