Forum Discussion
jus2shy
Sep 05, 2015Explorer
Well, here's my take. I personally feel that all mass-scale auto manufacturers (producing more than 20,000 units a year by my ruler) ought to rate their engines using the same procedure. GM has it right with getting their engine certified and on the SAE list of certified engine output. I wish Ford and RAM would do the same (can't remember who, but someone on here pointed that out).
As for dead pedal. I have it. It mainly shows up when one lets off the throttle completely and then after a quarter second, mashes the pedal to the floor. There is an appreciable lag. However, if one drive where they typically roll on the throttle (versus mashing), it doesn't really show up. It's the same type of dead pedal I had in my F-150 prior, so no big deal to me. I adapted. It's a sad fact that the aftermarket can successfully sell a "Throttle Sensitivity Booster" for all makes for HD diesel trucks and beyond, so it isn't just a RAM issue. It's across the board.
As for the call for GCVWR performance, that's why J2807 was introduced (as Shiner noted earlier). It's a minimum performance. Ford meets it with their F-450, and Mike Levine has commented that the next generation Super Duty will be meeting all performance specs in the J2807 test. I personally wonder where they fall short on with the current truck. But for what it's worth, I highly doubt it's a maintaining speed on a hill climb issue. It could be the stops and starts on 12% (or was it 16%?) grades. 5 stops and starts within 5 minutes or something like that with GCVWR I think that'd be exceptionally rough. Maybe Frame permanent deflection testing? Just so much to wonder about. But the next gen (2018) will meet all the specs.
As for dead pedal. I have it. It mainly shows up when one lets off the throttle completely and then after a quarter second, mashes the pedal to the floor. There is an appreciable lag. However, if one drive where they typically roll on the throttle (versus mashing), it doesn't really show up. It's the same type of dead pedal I had in my F-150 prior, so no big deal to me. I adapted. It's a sad fact that the aftermarket can successfully sell a "Throttle Sensitivity Booster" for all makes for HD diesel trucks and beyond, so it isn't just a RAM issue. It's across the board.
As for the call for GCVWR performance, that's why J2807 was introduced (as Shiner noted earlier). It's a minimum performance. Ford meets it with their F-450, and Mike Levine has commented that the next generation Super Duty will be meeting all performance specs in the J2807 test. I personally wonder where they fall short on with the current truck. But for what it's worth, I highly doubt it's a maintaining speed on a hill climb issue. It could be the stops and starts on 12% (or was it 16%?) grades. 5 stops and starts within 5 minutes or something like that with GCVWR I think that'd be exceptionally rough. Maybe Frame permanent deflection testing? Just so much to wonder about. But the next gen (2018) will meet all the specs.
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