All,

I just tore down the spare turbo I've had sitting on a shelf for a few months now. After lots of PB Blaster, and liberal use of a rubber mallet and a large brass drift, everything is now apart. The center bearing housing was a nightmare to remove, as gobs of baked on carbon had virtually welded it to the turbine housing mating surface. The thing is covered in baked-on grease, carbon, rust, etc.

So what should I use to thoroughly clean the innards? My preference is towards LESS scrubbing, if at all possible. And no, I don't have access to an ultrasonic parts cleaner.

u might try a very fine sand paper or wire brush to work on the chunks, and then soak in an engine degreaser....

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82' 300SD

perhaps some oven cleaner or the gasket remover spray they sell at the parts stores.

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

i would suggest going to your local machine shop and getting both parts of the turbo hot tanked (the compressor side aluminum hot tank safe of course) then coating the exhaust side of the turbo in a heat paint.

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Have you ever noticed that anybody driving slower than you is an idiot, and anyone going faster than you is a maniac?

As long as they would add one additional commandment for you to keep thy religion to thyself.
George Carlin (Wonder where he is now..)

1981 240d (engine donor 1983 240d) recently rebuilt engine hurray! - No more.. fought a tree and the tree won.

pearl black 1983 240d 4speed (Converted!@$$%) atleast the tranny was rebuilt.

i would try simple green... that stuff works wonders

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1977 MB 240D 4 speed 145K - Nearly Perfect
1993 MB 400E 218K - Weekend Toy
2018 Ford F150 5.slow 23K - My DD
2020 Subaru Ascent 5k - Wife's DD

1979 MB 280E 90K - Sold
1983 MB 240D 238K - Scrapped
1984 MB 300D 347K? - Sold
1984 MB 300TD Wagon - 188k - Sold
1987 MB 300E 5 speed 258K - Scrapped
1991 MB 300TE 5 speed 276K - Sold
1993 MB 400E 130K - Sold
1995 MB E320 Wagon 190k - Sold

B100 biodiesel is a remarkable solvent -- but don't throw any rubber seals in there.

I've also had good luck with the "purple power" brand junk you can buy by the gallon at any auto parts store -- I use that for general degreasing and mopping my epoxy garage floor now and then.

Cheers, John

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'98 E300TD (W210) | Sold 6/09 with 205k and counting
'04 VW Touareg V10TDI

Oddly enough Spraynine is an excellent degreaser. I use it to wash my engine. It is a little hard on aluminum though.

You know those buckets of carb cleaner snot that they sell? Ive soaked an entire small turbo in one before that refused to come apart. Took a couple of days, but the carbon practically fell off, and it doesn't harm aluminum terribly with long exposure, since most carbs are aluminum. Media blasting does wonders for the housings afterwards, just be sure the parts get baked and washed to remove all the media if you take that route.

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- K.C.Adams

'77 300D Euro Delivery
OM617 turbo / 4-speed swap
404 Milanbraun Metallic / 134 Dattel MB-Tex

Current status:
* Undergoing body work

My '77 300D progress thread

I use that "Engine Bright" orange stuff, i dont know if its OK on aluminum but my drive way is stained black now from all the the junk it cleaned of the engine.

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06 VW Jetta TDI

I second the B100. Nothing I've seen degreases as well as biodiesel.

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'83 240D with 617.952 and 2.88
'01 VW Beetle TDI
'05 Jeep Liberty CRD
'89 Toyota 4x4, needs 2L-T
'78 280Z with L28ET - 12.86@110
Oil Burner Kartel #35

http://i16.photobucket.com/albums/b1...oD/bioclip.jpg

Best degreaser, acetone. Use gloves, and lots of ventilation. But it will remove just about anything.

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I'm sick of .sig files

I try to use Simple Green when I can, but for the bad stuff I have to use Greased Lightning. This stuff works great and is cheap, but do not get any on your rims or paint, it will take out the shine! I buy both from Sam's by the gallon.
Also, if I can add a thought? You can buy cheap buffing wheels for your hand drill to polish up the turbo. Now could not be a better time for it.

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1985 300D burning WVO using 26 FPHE, half gallon heated fuel filter,glow plug heater,home made injection line heaters. Home made cold air induction. ALDA full out.
2003 F350 7.3(the last of the great motors)
1987 Paint Horse-non running too, just walks!

The best de-greaser by far is antimatter. You just need to be careful not to annihilate your self or apply it to quickly. Watch out things will get very hot if your not careful.

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green 85 300SD 200K miles "Das Schlepper Frog" With a OM603 TBO360 turbo ( To be intercooled someday )( Kalifornistani emissons )
white 79 300SD 200K'ish miles "Farfegnugen" (RIP - cracked crank)
desert storm primer 63 T-bird "The Undead" (long term hibernation)

http://ecomodder.com/forum/fe-graphs/sig692a.png

Just a newbie here but what works for me is applying all of these in this order 1)Simple Green and rinse 2) Gunk 'Engine Brite' then scrub as needed and rinse 4)SprayNine 'Grez-Off' and finally rinse well... All of this of course with the usual caveat of avoiding direct spraying of contact wires etc...

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1985 300D / 175k

WISH LIST
29' HackerCraft - Gentleman's Racer...
http://www.hackerboat.com/html/29__gentleman_s_5.html

Don't they sell that at Wal-Mart, next to the transporter beams? Or is it over by the blinker fluid?

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Board Member of MBCA|Houston

81 MB 300SD, 82 MB 300D Turbo (sold), 04 Lincoln Town Car Ultimate

Sooner or later every car falls apart, ours does it later!
-German Narrator in a MB Promotion Film about the then brand new W123.