frank@neuvirth.com Posted March 10, 2012 Share Posted March 10, 2012 Can any explain to me exhaust ramp, I have a 1996 E7 400 I ran the overhead and all is fine but at certain points in the duration the exhaust clearence goes to .110. I am used to Cummins and to the best of my knowledge this is not the case but I have talked to some Mack mechanics and they say mater of factly that this is exhaust ramp up but I get no good explanation as to why and if .110 is a normal clearance for the short duration time.thanks, Frank. Quote Link to comment https://www.bigmacktrucks.com/topic/23758-exhaust-ramp/ Share on other sites More sharing options...
theakerstwo Posted March 11, 2012 Share Posted March 11, 2012 This is for the dnyotard engine brake.It drops the dynotard cyl down engough so it will fill with oil and then cam pushes it up and it will lift more than the cam raises in in normal operation and then it releaves the compression like a jake brake. Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/23758-exhaust-ramp/#findComment-106604 Share on other sites More sharing options...
frank@neuvirth.com Posted March 11, 2012 Author Share Posted March 11, 2012 this engine has a jake brake system now should this cam be used with the jake brake system or should a different cam be used. Also thanks for the explanation, I have not been able to get anyone to explain it that well. Quote Link to comment https://www.bigmacktrucks.com/topic/23758-exhaust-ramp/#findComment-106719 Share on other sites More sharing options...
theakerstwo Posted March 13, 2012 Share Posted March 13, 2012 this engine has a jake brake system now should this cam be used with the jake brake system or should a different cam be used. Also thanks for the explanation, I have not been able to get anyone to explain it that well. Leave it along cause it want hurt nothen. If its a E7 there is only one cam made any way. 1 Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/23758-exhaust-ramp/#findComment-106918 Share on other sites More sharing options...
frank@neuvirth.com Posted March 13, 2012 Author Share Posted March 13, 2012 i really appreciate it thanks Quote Link to comment https://www.bigmacktrucks.com/topic/23758-exhaust-ramp/#findComment-106945 Share on other sites More sharing options...
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