ForcedInduction's 1982 300D
ForcedInduction's 1982 300D
1982 300D
WDBAB33A0CB008823
USA model
Exterior color code 623- Light Ivory
Interior color code 134- Date MBTex
Engine- OM617.952
Transmission- 722.315 automatic, increased modulator pressure
Turbocharger- Garrett GT2256V VNT from a 2003 Dodge Sprinter with a 3-stage mechanical boost controller (7-28-09), 16psi
Intake- Modified W115 300D manifold with Air to Water intercooler (9-16-09)
Air filtration- Fram 8037
Exhaust- Stock downpipe with a shorty mid-exit pipe
Injection- M-Pump (5.5mm elements, 6-30-09), 265 nozzles set to 140bar (3-18-09)
Engine Oil- Mobil1 15W-50 synthetic
Filtration- Stock oil filter, Baldwin BF7591-D (2-micron) secondary fuel filter (4-5-09)
Cooling- Stock radiator, 6" water pump pulley and 9-blade 1985 style fan (7-13-09), 1.1bar mini cap, expansion tank eliminated and two cooling systems merged with remote expansion volume (03-15-2011)
3.46 differential (5-18-09)
Brakes- W126 Gen-II 300mm vented front brakes (1-11-10)
Water/Methanol injection, 2-stage with port injection, 6x70cc/min nozzles (07-17-2010)
Galant front seat
HVAC systems and heater box removed (4-7-09)
Manual sunroof conversion (4-7-09)
Battery relocated to the trunk (4-19-09)
Custom oil cooler hoses based on the 1976 300D (6-30-09)
Weight (without me inside)
Front: 1940lbs (1740 8-23-09)
Rear: 1480lbs (1560 8-23-09)
Total: 3420lbs (3300 8-23-09)
1/4 mile- 17.445@76.8mph (8-7-10)
Dyno- 120hp, 200lb/ft at the rear wheels (7-31-10)
Engine bay 2011/03/16
(03-09-2009, 08:41 AM)winmutt Grats on the new ride. No more crank slap
(03-09-2009, 08:41 AM)winmutt Grats on the new ride. No more crank slap
Some interesting information is on the Carfax report....
It was sold at "Southeast Region" Auto Auction, twice (93 and 98).
It shows 146k miles on the odometer right now but was reported with 113k in 1993, 145k in 1996 and 178k in 1998. (05/17/2000 and every one after in Florida lists "Exempt from odometer reporting".) That works out to a 10-11k miles/year average, which means it has about 283k miles! Looks like I need to pull the cluster and look for signs of odometer fraud.
Hmmm.... The car is mine so there really isn't much I can do about it.
Sweet Ride, I'm sure you'll get her all worked out. Currently I'm thinking about getting rid of my w116 . Sucks about the odometer, I had a W201 odometer go out on me at 138k. I was curious does the 82 300D use a mechanical oil pressure gauge? It seems my problem came from the oil line going to the gauge exploding and oil getting in the cluster.
I'm curious as too why your idle is so rough, when I got my 617 it shook like fat sugar mama but after the valve adjustment it all quieted down and the idle leveled out to a steady humm.
(03-13-2009, 01:15 PM)Kozuka I was curious does the 82 300D use a mechanical oil pressure gauge?Yes. W115, W116 and W123 use mechanical. W126, W201 and later use electric.
Quote:I'm curious as too why your idle is so roughIt runs a hell of a lot better after replacing the glowplugs and doing a valve adjustment. Injectors should cure the nailing and rough idle.
(03-13-2009, 01:15 PM)Kozuka I was curious does the 82 300D use a mechanical oil pressure gauge?Yes. W115, W116 and W123 use mechanical. W126, W201 and later use electric.
Quote:I'm curious as too why your idle is so roughIt runs a hell of a lot better after replacing the glowplugs and doing a valve adjustment. Injectors should cure the nailing and rough idle.
New (used) 265 nozzles are installed and set to 140bar. One of them nails a little so I'll have to figure out which one and redo it.
The shake was reduced from moving the whole car to annoying vibration. However, while adjusting the rack damper it smoothed out perfectly for one brief second then went back to shaking. I wasn't able to make it repeat.
The odometer works beautifully (I've put 50 miles on it already) and the speedo matched the school zone radar trap at 30mph.
Next steps: Obtain a temporary tag, get smog tested and register for plates so I can (legally) drive it.
Phew, lots of work done today to both cars and fruitless runs through 3 junkyards.
They both got their instrument clusters fixed.
The 240 got jumper wires to the chassis ground and to the climate control light harness for cluster illumination (With the trace cut to prevent a short).
The 300 got a ground jumper to chassis, ground to cluster light ground wire and a bridge between the main plug light posts to bypass the rheostat and its charred traces.
Now I can trust the gauges again, but the 300's fuel gauge is still questionable.
Both got a Diesel Purge and primary filters. It helped the 300 a bit but made no difference on the 240. The 300's primary was filthy, as soon as the tank is empty I'll clean the strainer.
Found the nailing to be the #5 injector. DP didn't make a difference.
Next weekend, engine mounts.
(03-22-2009, 08:12 PM)ForcedInduction DP didn't make a difference.
Meh, it was just $15 and now I can say from personal experience that it doesn't work.
Cleaned out the fuel sender. There was some sludge but the gauge is still stuck at full despite looking only 3/4 full though the sender hole.
Weight (without me inside)
Front: 1940lbs
Rear: 1480lbs
Total: 3420lbs
I removed and retested the #5 injector due to nailing. It popped at the right pressure, has a great spray pattern and doesn't dribble. Tried swapping delivery valves and #5 still nails. I listened to the injector lines and pump with my stethoscope and found #5 has a much different sounding injection "thump".
Based on the above plus the IP being found barely bolted onto the engine when I bought the car, my conclusion is it needs a new IP.
On the plus side, this means I'll need to get the Myna pump sooner.
Today I flushed the cooling system, replaced the 40mm bypass hose, blocked off the two heater ports, removed the external heater piping and installed the Baldwin BF7591-D fuel filter system.
NASTY brown coolant came out. It took 20 gallons of clean water flushing before it all came out clear.
The plugs will make it very easy to install 1/4" coolant hoses for the Holset. There will be no HVAC system, everything under the dash will be removed tomorrow.
(04-06-2009, 06:23 AM)ForcedInduction Today I flushed the cooling system, replaced the 40mm bypass hose, blocked off the two heater ports, removed the external heater piping and installed the Baldwin BF7591-D fuel filter system.
NASTY brown coolant came out. It took 20 gallons of clean water flushing before it all came out clear.
The plugs will make it very easy to install 1/4" coolant hoses for the Holset. There will be no HVAC system, everything under the dash will be removed tomorrow.
(04-06-2009, 06:23 AM)ForcedInduction Today I flushed the cooling system, replaced the 40mm bypass hose, blocked off the two heater ports, removed the external heater piping and installed the Baldwin BF7591-D fuel filter system.
NASTY brown coolant came out. It took 20 gallons of clean water flushing before it all came out clear.
The plugs will make it very easy to install 1/4" coolant hoses for the Holset. There will be no HVAC system, everything under the dash will be removed tomorrow.
Its going to be a summer car and I also plan on installing a really good air filter from a 2004 Ford F350 where the HVAC box used to be. I'll get a cheap-o $25 Bosch blower off eBay for ventilation.
(04-07-2009, 08:29 AM)ForcedInduction ... I'll get a cheap-o $25 Bosch blower off eBay for ventilation.
(04-07-2009, 08:29 AM)ForcedInduction ... I'll get a cheap-o $25 Bosch blower off eBay for ventilation.
Scrap? No. Sell? Yes, everything thats still good. Blower, heater core, evaporator, CCU, actuators, solenoid bank, etc. Maybe even the box itself...
As for the CCU panel, I can fit either 5 or 6 gauges in there or 3 and an electronic boost controller.
Now you see it...
Now you don't!
Here is the basic placement of the filter. The battery will be relocated to the trunk, filtered air will go through the firewall to the turbo and cold air will come from the factory HVAC cowl ducts at the top center of the firewall.
Coincidentally, I have lots of good vacuum pods and ACC parts for sale.
The core didn't leak but I couldn't get the heat to work.
Haha, Im in the process of pulling my interior apart. Got most of the hvac out. Good luck!
The sunroof has been converted to manual, the passenger seat removed and 85c collected from under the seats. I've got 13.5' of 1/0 gauge cable coming ($32) so I can move the battery to the trunk this weekend.
Dynolicious reports 16.5second 0-60, 21.21 1/4mile @ 68mph and 90hp at the crank (78hp at the wheels). Its not an official measurement, I'm sure it has some accuracy issues since it doesn't use GPS. Not bad for having a funky injection pump and unknown boost pressure.
It was pretty much a parts swap job except the roller ramps, I had to make them from scratch and I riveted them in place. It definately needs new seals but it doesn't leak water inside the cabin.
So looks like this ones going to be the fun car? Strange it's doing 0-60 in 16 seconds. Maybe that's the floppy IP and mystery boost.
I replaced the leaking water pump and moved the bettery to the trunk using 1/0 gauge cable (New thread on that later). It sure frees up quite a bit of room in the engine bay! The sacrifice is the loss of my spare tire, however in 6 years I have never needed a spare (and I have AAA). The battery tray was rusted pretty well on one corner but luckily the body is undamaged. The trunk has surface rust all over the place, plus a 3" hole in the left corner of the deck. I buffed off all I could and used two cans of undercoating inside and out.
The weight after moving the battery, removing the passenger seat and removing the HVAC is:
Front: 1800lbs
Rear: 1400lbs
Total: 3200lbs
So according to the yard scale I've pulled 220lbs, but I don't trust it 100%. I'll try a certified scale after I register the car.
Pictures later. My home internet is down.
The 300D got its first taste of quality Sapp Brothers fuel today, 12.7 gallons. Now I can start collecting economy figures.
Today at Colorado Auto & Parts I scored a complete set of GenII W126 big brakes from an 87 420SEL for $45, and I talked the counter guy down from $65. It had some really nice 16" Mercedes wheels with good tires but unfortunately I could only find two of them and one of the two walked off after I left it alone for 10 minutes.
I noticed that you removed wire harness that's located right beneath the windshield. Is this strictly for HVAC controls?
Yes. It goes to the two control computers you see on the right and the blower resistor block in the engine bay. Mercedes designed it very well, they kept the different systems in their own individual harness instead of throwing it all in one wire bundle.
Very smart indeed. I've pulled at least 20lbs of wire and vaccuum lines from mine, these will join the pile.
Good progress was made today.
Afterglow mod is done and makes a very big difference after a cold start. Shutoff override valve is installed to allow the engine to stay running without the key. Engine to body ground strap was added. Vacuumed out the 10lbs of dog hair and found my missing screwdriver under the back seat insulation. Installed the 4-light brake mod. The replacement valvecover is polished and tapped for a 1/2"NPT blow-by fitting.
I should have my Holset housings back tomorrow.
Wow this is progressing very quickly. How soon till that autotragic is swapped for a 5 speed?
Probably never. It will likely get upgraded with S600 internals when the time comes.
Automatics are for play, manuals are for work.
More progress today. I finally got my gauges in the mail so I couldn't wait to install them.
Boost turns out to be 9psi (as I expected). I must be spoiled to my VNT, boost builds painfully s-l-o-w.
EGTs get up to 1250*f by the end of a 0-60 run. EGT and boost are 700*f and 5psi cruising at 70mph, same as my 240.
The gauges are 30psi for boost and 60psi for EMP.
(04-29-2009, 04:26 AM)ForcedInduction More progress today. I finally got my gauges in the mail so I couldn't wait to install them.
Boost turns out to be 9psi (as I expected). I must be spoiled to my VNT, boost builds painfully s-l-o-w.
EGTs get up to 1250*f by the end of a 0-60 run. EGT and boost are 700*f and 5psi cruising at 70mph, same as my 240.
The gauges are 30psi for boost and 60psi for EMP.
(04-29-2009, 04:26 AM)ForcedInduction More progress today. I finally got my gauges in the mail so I couldn't wait to install them.
Boost turns out to be 9psi (as I expected). I must be spoiled to my VNT, boost builds painfully s-l-o-w.
EGTs get up to 1250*f by the end of a 0-60 run. EGT and boost are 700*f and 5psi cruising at 70mph, same as my 240.
The gauges are 30psi for boost and 60psi for EMP.
(04-29-2009, 04:26 AM)ForcedInduction More progress today. I finally got my gauges in the mail so I couldn't wait to install them.
....
(04-29-2009, 05:43 AM)MB TECH ......
Here is how I set up my gauges to give you another perspective on possible ways to mount them. Not sure if you could squeeze three on the pillar though.
(04-29-2009, 04:26 AM)ForcedInduction More progress today. I finally got my gauges in the mail so I couldn't wait to install them.
....
(04-29-2009, 05:43 AM)MB TECH ......
Here is how I set up my gauges to give you another perspective on possible ways to mount them. Not sure if you could squeeze three on the pillar though.
(04-29-2009, 11:04 AM)DeliveryValve I take it you don't give a hoot on drilling into that manifold with that T3 turbo still attached to it!
(04-29-2009, 11:04 AM)DeliveryValve I take it you don't give a hoot on drilling into that manifold with that T3 turbo still attached to it!
The pillar mount is from summitracing.com (it is the universal 2 pod)
Also on the subject of drilling into the manifold for EGT, when I drilled mine I did it while the engine was running, that way the exhaust pressure will push the metal filings out instead of them entering the turbo
Got the diffs swapped tonight. The 300D now has the 240's 3.46. The 3.46 stayed sealed since it has oil less than a few months old but the 3.07 got Mobil 1 75w-90 synthetic. I didn't have time to swap the speedo so I didn't bother taking it out for a run.
The right axle turned out to be a CVJ reman.
Woo hoo! The 300D is finally 100% legal; registered, insured and smogged.
Unfortunately, it "passed" emissions with 37% opacity at 50mph. I really only got away with it because I used to work at that shop.
The EGR sludge in the intake must really be choking it off. I installed a scratch-built boost controller but the spring I had puts the boost at 18psi at its lowest setting. Even with that much boost it can't get enough air ingested.
this is my first post here, just wanted to say that i really enjoy checking out the work you have done to your cars, im new to the MB world but not so new to diesel i have a owned a slightly modified 01 f350 for a little while now.. anyway again awesome work and i cant wait to start posting up about my mods to the 83 300d i just picked up tonight!
Welcome aboard!
The more people participate the more we all can learn from each others experiences.
(05-25-2009, 12:10 AM)ForcedInduction filtered air will go through the firewall to the turbo and cold air will come from the factory HVAC cowl ducts at the top center of the firewall.
(05-25-2009, 12:10 AM)ForcedInduction filtered air will go through the firewall to the turbo and cold air will come from the factory HVAC cowl ducts at the top center of the firewall.
Some progress and a major setback today.
The driveshaft support and shifter bushings went in without the slightest hitch.
The M-pump project stalled due to an oil cooler hose fitting that stripped coming off. I should have put the tierod in the 240 instead.
Did a quick Italian Tuneup tonight. Top speed is 96mph@4500rpm, though it took a little while to get there with only 88hp. EGT topped out right at 1250*f with 9psi boost (but its raining so that lowered it a bit). The nailing is noticeably better which leads me to believe it may just be from carbon buildup.
That also shows that a manual (or lockup TC) would be good for about 11mph on the top end at the same RPM, my 240 could do 107mph at the same RPM with the 3.46.
(07-04-2009, 02:57 AM)ForcedInduction ...The nailing is noticeably better which leads me to believe it may just be from carbon buildup.
......
(07-04-2009, 02:57 AM)ForcedInduction ...The nailing is noticeably better which leads me to believe it may just be from carbon buildup.
......
Trying. I need to get my W115 intake in first and to do that I need a replacement turbine for the Holset to know what angle to weld the inlet on.
If anyone knows where to get a good HE341Ve turbine housing or a core turbo for a reasonable cost, let me know. I've been placing want ads on every turbo and diesel forum I know of.