91 405Mi16x4 Rear wheel drive conversion north south engine

By diyauto
( 3 )

8 minute(s) of a 241 minute read

2-23-2017

Today i've put in a whole day fixing the few things to finish this project and taking for its first test drive, first thing i did is to raise the back end and put it on jack stands, then switch the pump and tried hitting the pump and no success, then made a reservar which is pressurised with my air compressor and tried to force oil in the supply line, when i presurased the supply line the pump speeds but no oil is going in the pump up, check all the rubber lines, all are ok, after checking everything i can, then i moved to the charging system, remove the alternator and try bench testing it and it was not producing power, so i grabbed a another 120a alternator from my spars had to drill the power cable, the new one has much bigger power bolt, the space wasn't too tight, but the power cables are short so had to attach them in place, the belt needs little more tension, but it now produces 14 volts, also the LPG system is now working, there was only air in the system, now only the rear hydraulics to fix, i need to find how the pump is working, to be able to find what is wrong.








2-24-2017

Today didn't go as planned, went out and barely was able to find LHM hydraulic fluid, it was much more expensive then i remember, next i assemble the pump and decided to test it, attached fluid to the supply side turn it on and it was not pumping then used the bottle that i pressured and forced fluid thru the pump and out of the high pressure side and even then with the pump running it wasn't pumping, i need to find some instruction or something to figure out what type of pump this is and what can cause this condition.






2-25-2017

I know those type of pumps, but this one is not like that, this one has two ball bearings on eccentric race, only number i could find was this, this evening i went thru all the citroen specialists, and parts stores, no one has anything like this, i wash the pump with gasoline and was able to see that has two balls and tried the balls are stuck, blow out everything with compressed air and filled it with wurth rust off, i'll leave it over night and try cleaning it again tomorrow i can't disassemble it because the cap is swaged in couple of places, and i cant remove it without destroying anything, if you know some way to get the balls unstuck feel free to share.





2-26-2017

Today i spent many hours working on this hydraulic pump, did everything i could to get the pump's balls moving and came to conclusion i have to take it apart to clean it and inspect it, spend some time making this clamp and i welded a bar and weight to use it as a slide hammer, but it was slipping, because the pamps part is very harden, then i modify locking pliers and welded the slide hammer to them, and finally it came apart without damaging anything, after inspecting it the tolerances are very tight, any grain of dirt would not allow it to function, all the parts are in excellent shape, no corrosion and very well built, tomorow i plan to put it back together and test it, more to come









2-27-2017

Today i started by assembling the pump, i keep it extremely clean, then i bench tested it, then the struggles started mounting it in the car and putting everything back together, cycle it full up and down few times to push out the air, now works better than ever, is much quicker, and now somehow the front end is much higher then before, by my measurement is about 6.5 centimeters higher, it may settle down but may be because i moved the engine and gearbox so much back in the cabin.






2-28-2017

Today i took the mi16x2 now for its first test drive, started by dumping the clutch at 2500 rpm, to shock test the driveline and left two solid tire marks in the garage,it was happy to keep spinning but i lifted off, drove it and was down on power, first thought was a bad fuel injector, pull it in and changed them for the oem ones, and no change, then i transfer it on LPG (propane), the power came back so i might have missed the order on the petrol injectors, never less drove it couple of miles, and the steering needs some work, the bump steer is very bad and i can feel the dropped tie rod ends flexing, the rack it shelf feels nice, well weighted and communicates well, i may say better than the oem one and the brakes are awful, then i took the car to the spot where i took the photos before the conversion for some new photos, i need to fix the steering and the brakes, but for now i plan to have some time off the jack stands and i'm more busy  day by day, before i parked the car in the rear bay of the big garage i cleaned it, you can see the remains of the white line i made before i started the project, and the marks left by the fuel in the exhaust when i first started the engine and was full of fuel form the stuck open fuel injector, the front end came down exactly one centimeter, only 5,5 to get to where it was before.









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