Tuesday, July 18, 2017

W463: 1994 Mercedes G350 TD Engine Swap Part 4 FIN

This is the final post on the truck, so prepare for a picture dump.

I don't have pics of the injection pump apart - like I said before, I need someone shadowing me with a camera when I'm doing some of the more in depth stuff. Regardless - here's a shot of the RIV tang. This is where I insert my lock tool to hold the pump as it's stabbed back into the block at roughly 15* ATDC. Fine tuning is done with my A/B light via this port. The pump was adjusted to 13*ATDC for a bit of advance. Coupled with the new injector nozzles at 135bar everything should wear into what is essentially factory spec. It's a tad louder than normal, but it'll quiet down over time... as long as fresh clean fuel is used and the truck is frequently driven.




Here's where the motor was with injection pump stabbed in, vacuum pump and other ancillaries installed. 




When I was interrupted by the 9 foot, 400lb skid containing what's essentially a G350 President rack. Nice rack.

Test assembly. Not a fan of a few pieces, some holes were slightly off kilter which I'm glad I found out about on the ground not on the truck.

Here it is on the truck.


Fast forward a couple days...

I have a habit of disassembling freshly done cylinder heads and lapping valves in myself. I've had a few cases of shit work (not with my machine shop) and I promised myself to never take a chance on someone getting ready to go home.



Because the engine that was in the G already was a factory reman - it has shaved numbers. Meaning this cylinder head was completely gone through by MB when assembling their new motor.
 Here it is pre - torque on the engine. 


and torque'd.


With the cam installed let's see where our timing markers are....

Here's TDC cyl #1

Notch on the cam lining up perfectly with the notch on the #1 cam tower. It's almost like I know what I'm doing.

She's looking like a complete motor again.




Manifold on - new studs at both front and rear with new copper nuts. 

Fast forward a couple days and the motor is in. 


Injectors and lines installed, running new vacuum lines

You may ask, why does it seem like there's a multimeter sitting by my light....

This truck had absolutely the most IDIOTIC and invasive alarm (with immobilizer...hint hint)

As a PSA to anyone who may be reading this - should you want to install an alarm and/or immobilizer on your Mercedes....stop it.


Luckily I'm not the one that was left doing the removal... I got my money's worth that Saturday night.

So with that out of the way:




She fired up after about 15 minutes of cranking. Usually I'll prime the system myself so it'll only take about 2 minutes of cranking - but I needed to see oil pressure before I let the thing take off on me.

Once it was running - I went through the A/C system, got it blowing nice and cold.


Surprise! All that oil that pumped itself through Cyl #1 now ended up on my shop floor.....

There she is, outside under her own power and left out in the rain to wash off any dust it might've accumulated.



There was so much oil in the exhaust the smoke was a steady blue smokescreen. I took it for a 150 mile run up to a spot on the lake and she cleared out nicely. Made for a couple sweet pictures and brought her back to the shop where I parked her up in the other building so I don't have to look at it until it got picked up.

1 comment:

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