So my latest project is to transplant the OM603 from a 1987 W124 300DT wagon into a 1984 W107/R107 380SL body
and creating a SL300D turbodiesel or a 300SLD..
so I have a myriad of questions, and I am fishing for some answers.. I have just begun this phase of the project
so while some research has been done, by no means is that complete. I thought I would boost my research
with posts to this and other forums and tap into the vast knowledge base that is out there..
anyway the project photo gallery/journal is located here for those interested :
http://www.coastalboatsales.com/jfraley/gallery/SL300D
so below is what I am facing so far..
what am I missing ?
what else have I not thought of ?
thoughts ?
suggestions ?
must have electrical systems:
(minimum needed to run)
starter circuit
starter motor to bat + and solenoid connections to starter switch
glow plug relay
connections from relay to glow plugs (six pole plug )
connection to battery and ground
signal wire to glow lamp indicator on dash
what else is involved with this circuit to enable its operation ?
temp control for glow length operation?
several other wires.. have not traced them
engine monitoring systems:
water temperature gauge connections
should be plug and play.. hopefully
oil pressure gauge connections
also plug and play.. hopefully
engine driveability/emmisions/feedback loops etc.:
EGR (exhaust gas recirc)
I plan to disable this completely
PCV ( crankcase vent)
I plan to disable this completely by dumping the vent into a air/oil separator
and vent the oil-free air out of the engine compartment via hose
Air Flow Meter
from what I understand this just is simply the input side of the EGR feedback loop
I plan to not use this at all
electrical connections on back of IP
two wires.. what do they control ?
vacuum systems:
wastgate/boost fuel control
operated by vacuum circuit, manifold pressure port on intake
how does this loop work, what are other inputs ?
electrical pressure port on manifold going thru a series of electro-vac solenoids and the
"big-blue" vacuum regulator.. again not sure how all this works, but I have not yet studied the vac
diagrams yet..
can I just use a wastegate control with a variable boost setting ( like a delta )? but how do I control the added fuel needed
for the added air (from boost )
I also plan to add an EGT gauge to monitor this
vac connections to ALDA on IP
one connection splits into two and feeds into fuel control system ?
study of vac diagrams may help
other vac connections on IP
I imagine on is the fuel cut-off connected to ignition switch
I will have to install an electro-vac solenoid possibly tapping off the
ignition coil power wire to control IP fuel-cutoff
study of vac diagrams may help
vac solenoids next to air filter box / AFM
not sure what they do
study of vac diagrams may help
Transmission:
has electrical connection (four pole plug i think )
what does this do ? just the reverse light and possibly neutral safety switch
FYI I am using the 124 transmission ( not sure of the model )
control boxes behind battery
several units .. I seem to remember one controlling idle on my other W124
are they even related to engine operation ?
I think one is related to the climate control..
other items to boost performance once I get it running reliably
Send out injection pump to myna diesel in finland to be upgraded
or figure out what they do to get more fuel ( bigger injectors etc )
Upgrade turbo+up the boost, holset hx35 is supposed to plug and play with
stock exhaust manifold on the 603.
Add an intercooler