Macktruckman

Local outfit here has had one for several years that is a 10 wheel dump has a C-15 and an 8LL in it and it’s crammed in up under the windshield but if a C-15 fits I would assume about anything common will fit. There are places that make wiring harness for putting about any engine in any common truck. Is the end cost worth it? Only you can decide that. At any rate good luck.

Another question i have about leaving the econovance in place is if I plug the oil line off to it how does it get oil to the bearings or bushings in the exonovance? Does it get oil through the pump itself? thanks josh

I haven’t set the timing as i haven’t got the pump back from the pump shop yet. I figured out how mix and match couplers and bolt the E6 pump onto the econovance. I wanted to bolt directly onto the block but the 3 bolt adapter on the E6 pump won’t direct bolt to the E7. Have to remove that and then it will but theres a drain back hole for oil at the bottom on the e7 that the E6 pump leaves exposed so i didn’t know what to do. So i figured out how to couple and bolt it to the econovance. As far as timing my old E6 was set about 22-23 but i read on this forum of a person doing this swap and recommended about 17. He said better to have too little advance than too much? Said 17 or so would be better for lower end torque. So im contemplating. thanks Josh

Awesome thank you guys. Im still not totally sure how exactly im going to go about mounting my e6 pump, whether to the back of the econovance or directly. Seems fjh is exactly right about the shafts being keyed and not. Either way I will figure it out and make something work. thank you guys for the help im learning! Lol josh

Awesome thank you and please let us know how it pulls and works. Mine is hopefully even more simple because I am putting the e7 engine in a truck im taking an E6 out of and reusing the e6 mechanical pump so I already have the throttle linkage all in place. I test fit the E7 injector lines and they thread right on the delivery valves on the Robert Bosch E6 pump. What i haven’t figured out is how exactly to remove the econovance? Do i remove the 3 timing adjustment bolts from the front of the timing gear? I also wondered about leaving the econovance, as fjh said and just plug the oil supply. But would i be smarter to use a boost switch or something and try to make the econovance actually function? Anyway I hope someone can help with that too. Awesome to hear your truck works and im anxious to hear how it pulls and runs josh

Thank you for your help josh

Or possibly make the advance function with a boost pressure switch of some sort?

Ok i found the spring so thats a question i had so thank you for that. Is there a way to completely remove it and bolt my mechanical pump up directly? The bolt holes look to be there correct. It looks like just a matter of coupling to the gear? The coupling looks like my e6 josh

I’m in the process of making a E7-400 vmac a mechanical engine myself. I have a robert Bosch pump from my e6 that I plan on using. Did you keep the econovance in place and somehow lock or pin it in place? Or did you remove it altogether? I would like to remove mine and bolt the pump up directly. Do you happen to have a part number for the injector lines needed? thank you, josh

So I patched up the 2v and ran it several months and it let go again. I bought a 1995 E7-400 thats a vmac. I am going to use my robert bosch pump and convert it back to full mechanical. I have been told i can “pin” the econovance but i would rather just remove it and buy a set of fuel injector lines for an earlier E7 mechanical. Problem i have is with no vin number from a mechanical engine truck mack or vanderhaags cant help me. They all say they can get or have the lines i need but no way to verify which ones fit. So does anyone know the part #’s I need or does anyone have a 1990’s truck with an E7-400 or maybe 350 full mechanical that I can borrow a vin from to order lines? Also has anyone used Rochester diesel mack stage 1 or stage 2 injectors? Im on the fence about which injectors i want as well. Thank you guys

I’m sure sorry about your brother. You have ole bucky looking great, he would surely be proud. Sounds like he has left a legacy to be proud of my friend. Josh

Someone that knows more than me will be along soon and clarify but 1550 rpm does not sound right to me. My understanding was that even the “L” engines were governed at 1800? And i may get flamed but where I live Johnny law doesn’t pay attention to smoke so id ditch the puff limiter especially for field work. Im sorry your having so much trouble. I understand the frustration as ive been fighting with an N-14 all winter that’s still not right. Sometimes things seem to never want to line out. Lol. Good luck Josh.

Oh man that sucks im sorry about that. Hopefully you are good to go now. josh

Well do you know how she pulls yet?

These are 6 spoke front and back and all of these trucks were 11R-22.5 rear and 385-65-22.5 fronts. The drop axles all have low pro 22.5 Josh