fjh Posted October 22 Share Posted October 22 1 hour ago, Macktruckman said: 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 My comments were made with not having to change the fuel line configuration in mind! if I remember on the v Mac pump the hub on the pump is not keyed to the shaft your mechanical pump is keyed! May make things a bit more of a hassle to time but should be doable! As long as the spring in the econovance is not broken and engine starts in the retarded position it should work fine once timed to 18-20 degrees fixed timing! Quote Link to comment https://www.bigmacktrucks.com/topic/74616-converting-e7-400-back-to-mechanical/page/2/#findComment-560517 Share on other sites More sharing options...
Popular Post SelfloaderMack Posted October 23 Author Popular Post Share Posted October 23 Well I ran all day with no issues, same power as I originally had before my computer started going haywire so I'm happy with that, more hp to come in the future. As far as the econovance goes I just unbolted the pump from it and I believe there was 3 internal bolts for one section and then another 4 external bolts in the same configuration as the pump, I'm not real wise on how it all works but from what I gather it was made mainly for emission purposes so I didn't see any advantage to keeping it installed, and I've heard that an e6 pump will bolt up to an e7 so you should be good as long as you know where to time it, I didn't torque the nut for the timing gear tight enough the first time so mine slipped and got out of time so make sure to get that plenty tight! 3 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74616-converting-e7-400-back-to-mechanical/page/2/#findComment-560588 Share on other sites More sharing options...
Macktruckman Posted October 25 Share Posted October 25 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 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74616-converting-e7-400-back-to-mechanical/page/2/#findComment-560797 Share on other sites More sharing options...
fjh Posted October 30 Share Posted October 30 On 10/25/2024 at 12:21 PM, Macktruckman said: 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 So what timing did you go for! just curious! Quote Link to comment https://www.bigmacktrucks.com/topic/74616-converting-e7-400-back-to-mechanical/page/2/#findComment-561057 Share on other sites More sharing options...
Macktruckman Posted October 31 Share Posted October 31 (edited) 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 Edited October 31 by Macktruckman 2 Quote Link to comment https://www.bigmacktrucks.com/topic/74616-converting-e7-400-back-to-mechanical/page/2/#findComment-561102 Share on other sites More sharing options...
fjh Posted October 31 Share Posted October 31 1 hour ago, Macktruckman said: 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 Hopefully things should be good! Long as the hub with the key fits the E& gear all should be good in theory! Quote Link to comment https://www.bigmacktrucks.com/topic/74616-converting-e7-400-back-to-mechanical/page/2/#findComment-561109 Share on other sites More sharing options...
Macktruckman Posted October 31 Share Posted October 31 (edited) 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 Edited October 31 by Macktruckman Quote Link to comment https://www.bigmacktrucks.com/topic/74616-converting-e7-400-back-to-mechanical/page/2/#findComment-561120 Share on other sites More sharing options...
SelfloaderMack Posted November 1 Author Share Posted November 1 I would assume it would get enough oil from the pump itself but I'm not sure, the original line to the econovance was used mainly for the oil pressure not so much for the oil itself so you should be fine, just out of curiosity does anyone know how many degrees of timing play there is in the front timing gear with the slots in it? Quote Link to comment https://www.bigmacktrucks.com/topic/74616-converting-e7-400-back-to-mechanical/page/2/#findComment-561166 Share on other sites More sharing options...
fjh Posted November 1 Share Posted November 1 10 hours ago, SelfloaderMack said: I would assume it would get enough oil from the pump itself but I'm not sure, the original line to the econovance was used mainly for the oil pressure not so much for the oil itself so you should be fine, just out of curiosity does anyone know how many degrees of timing play there is in the front timing gear with the slots in it? Don't no off hand ! Set the engine on the degrees you want to be at ! install the pump pined on the number one cyl !And try to have the slot mid point when you install the gear all will be good ! you will have all the tweaking room you need! as stated the feed line is to run the econovance! Quote Link to comment https://www.bigmacktrucks.com/topic/74616-converting-e7-400-back-to-mechanical/page/2/#findComment-561173 Share on other sites More sharing options...
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