Gravelguy413 Posted November 23, 2022 Share Posted November 23, 2022 Anybody know how many ft. Lbs. of torque an e6-350 2 valve tip turbine puts out and at what rpm? I’m trying to compare it to an em7-300 mechanical as far as power goes. Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted November 23, 2022 Share Posted November 23, 2022 I think it's around 1450 lbft.. I am going to look at my books.. So you say its a 350, tip turbine??? I'm 'bout to learn something here, Quote Link to comment Share on other sites More sharing options...
terry Posted November 23, 2022 Share Posted November 23, 2022 4 minutes ago, Joey Mack said: I think it's around 1450 lbft.. I am going to look at my books.. So you say its a 350, tip turbine??? I'm 'bout to learn something here, This engine was made, but you don't run across it very often. terry 1 Quote Link to comment Share on other sites More sharing options...
Gravelguy413 Posted November 23, 2022 Author Share Posted November 23, 2022 Yes it has that charge air cooler mounted on top of the engine. My e7 puts out like 1425 ft lbs at like 1020 rpm. Just wondering how that engine rates against mine for work. Quote Link to comment Share on other sites More sharing options...
Gravelguy413 Posted November 23, 2022 Author Share Posted November 23, 2022 I know it’s a e6-350 2 valve. I guess it’s called a tip turbine. It has that intercooler mounted on top of the engine or what do they call those engines? Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted November 23, 2022 Share Posted November 23, 2022 Well, I just went through my book.. I do not have the answer.. I'm sorry... jojo Quote Link to comment Share on other sites More sharing options...
BOBWhite Posted November 23, 2022 Share Posted November 23, 2022 Heres stuff from a 1980 brochure: I think the tip turbine and the charge air cooler motors were produced at the same time then. Doesn't show a tip turbine 350 but I think you could get a rough idea. Quote Link to comment Share on other sites More sharing options...
Mark T Posted November 23, 2022 Share Posted November 23, 2022 Not sure , but if it's a 350 it's not going to be the highest torque. Quote Link to comment Share on other sites More sharing options...
mrsmackpaul Posted November 23, 2022 Share Posted November 23, 2022 1 hour ago, BOBWhite said: Heres stuff from a 1980 brochure: I think the tip turbine and the charge air cooler motors were produced at the same time then. Doesn't show a tip turbine 350 but I think you could get a rough idea. This part of your picture show a coolpowered 350 Series intercooled tip turbine motor Thats a good page of information you sharex there Bob, thank you Paul 1 Quote Link to comment Share on other sites More sharing options...
mrsmackpaul Posted November 23, 2022 Share Posted November 23, 2022 And I dont think two valve or four valve made much difference if any to the torque quoted by Mack 4 valves were more efficient and gave better fuel economy Paul Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted November 23, 2022 Share Posted November 23, 2022 I certainly was WAY off.. I do not have the answer for the E-6... sorry... but this picture is from my 1994 book, non-V-Mac specs. It seems to me that it is probably close to that of the E-6 that you have. I dont know if I helped, but,,,, anyway... post the answer when you get it, just curious... jojo 1 Quote Link to comment Share on other sites More sharing options...
mechohaulic Posted November 23, 2022 Share Posted November 23, 2022 any pictures of engine so we are all on "same page " in responses Quote Link to comment Share on other sites More sharing options...
Gravelguy413 Posted November 23, 2022 Author Share Posted November 23, 2022 I ran the vin thru Mack and it came back as an e6-350 2V. Has the charge air on top with coolant lines going into it. I thought it was odd to have an e6 in a 1990 R model but it’s all original 1 Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted November 23, 2022 Share Posted November 23, 2022 and a 2 valve at that.. the 4 valve was out 2 -3 years before.. or so i thought.. the last 2 '87 RW's I worked on were 4 valves.. Like I said,, I am bout to learn more stuff,,,, 👍jojo 1 Quote Link to comment Share on other sites More sharing options...
mechohaulic Posted November 24, 2022 Share Posted November 24, 2022 one of the many things in todays world is this E business. back then an engine was what it was ;;; 285/ 300/350etc. much like the cat excavators today vs year back. simple 325 (3 +quarter ) 345- and so on . todays world has all different designations. should have been around when this 4 valve stuff first showed up ..LOL . JOJO if the one's that "know it all " continue we are in trouble. life is a learning experience every day. I've learned so much (not all positive) since finding this site. Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted November 24, 2022 Share Posted November 24, 2022 I get it Mech.. I was trained by an old A$$hole.. He was the smartest man I knew back then and he could give all the new guys a run for the money.. Earl was the MAN... So I built a '90 E-7 4 valve, 2 1/2 years ago. I also freshened up 2, E-6,, 4 valves in, 2, RW's.. however,, I did not know that a '90 Mack would be spec'd with a 2 Valve.. When I learn something new about these awesome machine's, I store it in my brain, then read about it when I can, usually from my own library... It's Men like you and a bunch of other's here, that amaze me with your knowledge.. Jojo 1 Quote Link to comment Share on other sites More sharing options...
Gravelguy413 Posted November 24, 2022 Author Share Posted November 24, 2022 This is a 1990 Mack fire truck. Model is a R688FC. For some reason it was built with this engine and paired with an Allison auto. Didn’t know econodynes came with autos either Quote Link to comment Share on other sites More sharing options...
mechohaulic Posted November 24, 2022 Share Posted November 24, 2022 a little in site as something seemly so simple as " this is a fire truck helps. many times fire apparatus come under their own specs. 1 Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted November 24, 2022 Share Posted November 24, 2022 yes sir,, with that said,,, I feel like they used the simplest/most reliable engine and torque/HP, wasnt the issue, as much as the fact that It will run every time you started it, and with an auto tranny, it was surely going to get to the FIRE.. Kinda' like how reliable the VW Beatle was.. Numb as a 'pounded thumb' but would get there.. anyway, my silly take on it..... jojo 1 Quote Link to comment Share on other sites More sharing options...
mechohaulic Posted November 24, 2022 Share Posted November 24, 2022 29 minutes ago, Joey Mack said: I get it Mech.. I was trained by an old A$$hole.. He was the smartest man I knew back then and he could give all the new guys a run for the money.. Earl was the MAN... So I built a '90 E-7 4 valve, 2 1/2 years ago. I also freshened up 2, E-6,, 4 valves in, 2, RW's.. however,, I did not know that a '90 Mack would be spec'd with a 2 Valve.. When I learn something new about these awesome machine's, I store it in my brain, then read about it when I can, usually from my own library... It's Men like you and a bunch of other's here, that amaze me with your knowledge.. Jojo best part about the few sites such as this is the group that comprises such sites tend to be great people. one of the few enjoyments i had when able to have time off was to attend the old hit/ miss engine shows. the people there (many ole timers) not only had an unbelievable amount of knowledge (and stories) but also the willingness to share both, have to be careful here or i'll do my usual and go off topic. LOL also THANK YOU; it has been and continues to be a two way street in the knowledge /learning dept. you have taught me also. 1 Quote Link to comment Share on other sites More sharing options...
mechohaulic Posted November 24, 2022 Share Posted November 24, 2022 I know there are some serious fire truck buffs on this site ; they chime in might have additional info. fire trucks are in a world of their own . Mack sent me to fire app school back in the '70's to learn up. waterbury Mack sold two fire trucks while I was there; an MB and an R model. both of which I hear are still around. not in full service; parade units etc. Quote Link to comment Share on other sites More sharing options...
Gravelguy413 Posted November 24, 2022 Author Share Posted November 24, 2022 Can this engine be swapped in place of an e7 and just remove the tip turbine set up and plumb the existing chassis mount charge air into its intake ? Quote Link to comment Share on other sites More sharing options...
fjh Posted November 24, 2022 Share Posted November 24, 2022 8 minutes ago, Gravelguy413 said: Can this engine be swapped in place of an e7 and just remove the tip turbine set up and plumb the existing chassis mount charge air into its intake ? Yup Quote Link to comment Share on other sites More sharing options...
Gravelguy413 Posted November 24, 2022 Author Share Posted November 24, 2022 11 minutes ago, fjh said: Yup Is there any difference in the pump, turbo or injectors or anything else when an engine is spec’d to come with an auto tranny as compared to one spec’d with a standard ? Quote Link to comment Share on other sites More sharing options...
mrsmackpaul Posted November 24, 2022 Share Posted November 24, 2022 2 hours ago, Gravelguy413 said: Can this engine be swapped in place of an e7 and just remove the tip turbine set up and plumb the existing chassis mount charge air into its intake ? I dunno why you would unless there is some drama with what you have It wont give anymore power or anything like that The old tip turbine is pretty proven and reliable Unless I have missed part of the story here Or are you looking at buying a motor like this from a truck and fitting it into a different truck ? Paul Quote Link to comment Share on other sites More sharing options...
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