91 405Mi16x4 Rear wheel drive conversion north south engine

By diyauto
( 3 )

8 minute(s) of a 241 minute read

11-15-2016

Today i had to undo some of the work i've done yesterday, had to remove the battery tray, i had a lot of space there and it is close to the coolant supply, so i place the LPG evaporator there, making the bracket was easy, then i went thru all my rubber lines and find a coolant line that will do the job, in which i installed the coolant temp sensor for the lpg, then tried using the lpg supply copper line which was too long, so again i had to go thru my supply of hard lines and found a shorter one, after bending it i placed it to be as invisible as possible, next in line should be power supply cables, i like to replace them because the old ones have marks from stuff rubbing on them but i don't know what gauge wire go get, stock one seam to thin, more to come.



Last night temperature dropped down to  -3 celsius, i'm sure someone will laugh but for this parts that's cold, so i stayed out of the garage, warmer days are coming soon i'll be back working on it.


11-17-2016

Today i started by rooting the engine ecu wires and cable tied them in place also installed the ecu and the fuel pump relay fuse all in the ecu box now is full, then i installed a ground strap on the passenger side engine mount, after that i installed one more on the on the drivers side, i like using this style ground straps, they can take decent amount of amperage, and last long time, then i installed the main ground cable directly to the starter bolt, also installed thick cable to the top ot the shock absorber bolt and installed the strut bar i made couple of months back, than i spend 4 hours on the wiring and used two entire rolls insulation tapes, replacing wires, elongating wires, replacing connectors, routing wires, away from heat and sharp things, i had to stop there i'm waiting on the the intake manifold to be enabled to route all wires and hoses, more to come.








11-18-2016

Today i did some fabrication, i made a dual fuel filter holder bracket, as i have already installed dual fuel pumps i need two filters and i'm running out of space back their, best place i found is next to the hydraulic cylinder that is just enough space for two filter so the bracelet i made brings them as close as possible, and i need a way to attach them to the car, i may leave attaching them when i'm doing the exhaust so i can weld the bracket to the subframe, i've had bad experience with fuel leaks and that is why i'm going to such an effort to make i right, more to come.





11-20-2016

I've been at a standstill last couple of days because of the inlet manifold, and finally my friend was enable to weld it for me, when welding we had an old weld crack, so we welded over the old welds to ensure no more cracks or leaking, now i have little more modifications to do to it, and make it look better, i'm tempted to smooth it and paint it silver, also got the drive shaft flange welded, tig welding is the way to go when precision and strength is needed, i plan to work on the inlet manifold next couple of days till i finish it, more to come.







11-21-2016

Today i worked on the intake manifold, first i smooth the inside then i smooth the outside then i drilled and tapped the throttle body, for the engine crank pressure system, then i drilled and tapped couple more vacuum ports, i don't like splitting vacuum lines, after that i drilled tapped and filed flash the LPG nipples, now they are smooth so they don't affect the air flow, the plan going forward is to spray the entire manifold in high build primer to make it smooth and then paint it silver, more to come.







11-22-2016

Today i stayed on plan and continued working on the intake manifold, late last night i pressure wash it, and it dried over night, today i clean it with paint prep the masked it, after that i applied adhesion promoter, and then i sprayed couple of coats of high build primer, it's thick and should come out smooth, now it has to dry and shrink before sanding, more to come.




11-24-2016

Last two days i've been wet sanding the inlet manifold, it's not perfect but it should do the job and not look so ugly, i've just finished painting it silver to match the body color, it needs to dry well and i can resume assembly, more to come.




11-25-2016

Today i've worked my fingers to the bone, laterally 12 hours working around the engine, had to run all new coolant hoses for the Lpg evaporator, oil cooler, then extend the wires that didn't reach, all of this just to be enabled to install the intake manifold, there's a lot of hoses and wires under it and i was planning to install the LPG injector there, but there was simply no space left for them, so i put them on top and run the hoses to the bottom, after i install the intake i install the fuel injectors, rail AN6 fittings, oil cap, idle valve, ignition coil, throttle body, i've run into many difficulties assembling them, wich i've resorted but i have couple more, one of which is the throttle position sensor, and the airbox, there is no space for the airbox so as much i hate i'll have to run a cone filter, more to come.







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