stev Posted November 16, 2010 Share Posted November 16, 2010 so, my 1988 R688T has a mechanical E6 engine in it.when did electronic controls start to appear on Mack engines? what years or engine models signify the changeover? Quote Link to comment https://www.bigmacktrucks.com/topic/16516-mechanical-versus-electronic-engines/ Share on other sites More sharing options...
farmer52 Posted November 16, 2010 Share Posted November 16, 2010 so, my 1988 R688T has a mechanical E6 engine in it.when did electronic controls start to appear on Mack engines? what years or engine models signify the changeover?I do not believe any E6 engines were electronic. The E7 is the first engine to go electronic. I think it was around 1990. My 1992 EM7 was electronic. I believe some E7s were mechanical. I am sure there are others on this site that know for sure (and will correct me if I am wrong). Quote Ken PRR Country and Charter member of the "Mack Pack" Link to comment https://www.bigmacktrucks.com/topic/16516-mechanical-versus-electronic-engines/#findComment-66901 Share on other sites More sharing options...
Superdog Posted November 16, 2010 Share Posted November 16, 2010 I believe 1990 was the first production year for the VMAC electronics.I had a 1991 CH with an electronic E7400.You could still get mechanical E7's until '94. Quote Link to comment https://www.bigmacktrucks.com/topic/16516-mechanical-versus-electronic-engines/#findComment-66902 Share on other sites More sharing options...
stev Posted November 16, 2010 Author Share Posted November 16, 2010 I believe 1990 was the first production year for the VMAC electronics.I had a 1991 CH with an electronic E7400.You could still get mechanical E7's until '94.so, is there a horsepower cutoff or something? are 400hp and above all electronic, while 350's and below are not? and anything beyond 94? Quote Link to comment https://www.bigmacktrucks.com/topic/16516-mechanical-versus-electronic-engines/#findComment-66911 Share on other sites More sharing options...
mackcl96 Posted November 16, 2010 Share Posted November 16, 2010 Do believe 1997 was the last year Mack made E7 mech,,,,,,,,but you will find leftovers in 1998 Quote Thanks for hearing me out.You can have the soap box now---------JIM Link to comment https://www.bigmacktrucks.com/topic/16516-mechanical-versus-electronic-engines/#findComment-66912 Share on other sites More sharing options...
rhasler Posted November 16, 2010 Share Posted November 16, 2010 I have a copy of an old publication stating that on August 1, 1990 Mack Trucks issued a press release announcing the introduction of the VMAC system. These were originally available in chassis manufactured in 1991. The publication also lists order codes for E7 VMAC engines from 250-400 horsepower. I can't recall seeing any of the lower horsepower models. Quote "Mebbe I'm too ugly and stupid to give up!" Link to comment https://www.bigmacktrucks.com/topic/16516-mechanical-versus-electronic-engines/#findComment-66913 Share on other sites More sharing options...
rhasler Posted November 16, 2010 Share Posted November 16, 2010 Do believe 1997 was the last year Mack made E7 mech,,,,,,,,but you will find leftovers in 1998The E7 mechanical engines were officially retired as of March 1, 1998 Quote "Mebbe I'm too ugly and stupid to give up!" Link to comment https://www.bigmacktrucks.com/topic/16516-mechanical-versus-electronic-engines/#findComment-66914 Share on other sites More sharing options...
stev Posted November 19, 2010 Author Share Posted November 19, 2010 The E7 mechanical engines were officially retired as of March 1, 1998When we're E-6 engines retired? Here is an ad for 1998 e-6 engined rd-690's:http://www.truckpaper.com/listingsdetail/detail.aspx?OHID=2416976 Quote Link to comment https://www.bigmacktrucks.com/topic/16516-mechanical-versus-electronic-engines/#findComment-67018 Share on other sites More sharing options...
rhasler Posted November 19, 2010 Share Posted November 19, 2010 When we're E-6 engines retired? Here is an ad for 1998 e-6 engined rd-690's:http://www.truckpaper.com/listingsdetail/detail.aspx?OHID=2416976I think that's a typo. A 1998 chassis ought to have an E-Tech engine. The E6 was probably retired sometime mid 1989, maybe a bit later. Quote "Mebbe I'm too ugly and stupid to give up!" Link to comment https://www.bigmacktrucks.com/topic/16516-mechanical-versus-electronic-engines/#findComment-67021 Share on other sites More sharing options...
Mackpro Posted November 19, 2010 Share Posted November 19, 2010 I think that's a typo. A 1998 chassis ought to have an E-Tech engine. The E6 was probably retired sometime mid 1989, maybe a bit later.Last I could find of the E6 was in 1990 however in 1991 it still listed EME6-250L and 350L plus the EE6-350, I think these were for export. Quote Link to comment https://www.bigmacktrucks.com/topic/16516-mechanical-versus-electronic-engines/#findComment-67026 Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.