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Showcase cover image for Project SLK230

General Information

Year
1999
Make
Mercedes-Benz
Model
SLK230 Kompressor
Color
black 040
Packages
AMG sport package
History
Bought this one from a friend, who wanted to scrap it. Invested 200 work hours and 5000 dollars in parts over 3 years. Drives like a dream now. No leaks. Has all options installed. Everything works, not a single missing part and nothing rattles or flakes...and I mean nothing! Came with all paperwork, manuals and 3 keys complete. Gave it to my wife for our wedding anniversary last year. She loves it.
1999 Mercedes-Benz R170


Modifications

Drivetrain
It came with a fairly new head (7 years old) and excellent compression on all four cylinders. Kompressor, Air pump, AC, Power steering and Waterpump were in top condition. Changed all fluids incl. engine oil, transmission, brake, cooling, final drive and Kompressor fluid. Removed rats nest and had to clean out 7 years of dirt from the engine compartment. Changed valve cover gasket, spark plugs, front crank seal, O2 sensors and most rubber hoses and plastic clips.
Interior
Red/Charcoal interior. Leather seats were still nice. Removed and fixed both door panels and exchanged all dashboard parts and center console for refurbished plastic parts from Holger in Florida. Installed new headliner, sport steering wheel and refurbished all 5 hydraulic roof cylinders.
Exterior
Changed grill for updated sportier version. New... used... perfect AMG front bumper for 400 dollars. Needed partial paint-job due to faded clear coat and some scratches in 2019
Audio
Kept the OEM BOSE system incl. CD-changer, since they worked fine with excellent sound, but swapped the head-unit against a refurbished Becker Audio 10 with aux-input.
Lighting
Swapped headlights for black Dual Halo Spider lights.
Exhaust
Added SL320 chrome tip
Suspension
Installed new OEM rear suspension and steering damper as well as 4 new shocks. After the 4-wheel alignment it drives like a smooth Go-cart.
Wheel and Tire
Came with some junky chrome mags and worn tires. Installed 8x18 JNC (BBS style) wheels with +34ET and perfect Centerbore and mounted 235/40ZR18 on all 4. Added 5 mil spacer ion front for tight fit without rubbing or fender problems.

Comments

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Registered
1990 300SL-24V, 1999 SLK230 Sport, 2018 Subaru Forester XT touring
Joined
·
97 Posts
2651101


Pictures of the interior fully updated and refurbished!

2651102


2651103
 
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Registered
1990 300SL-24V, 1999 SLK230 Sport, 2018 Subaru Forester XT touring
Joined
·
97 Posts
Close-up of the 18 inch wheels

2651104
 

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Registered
1990 300SL-24V, 1999 SLK230 Sport, 2018 Subaru Forester XT touring
Joined
·
97 Posts
New look of our Baby-Benz
2651107
 

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Registered
1990 300SL-24V, 1999 SLK230 Sport, 2018 Subaru Forester XT touring
Joined
·
97 Posts
Baby Benz developed a misfire in cylinder number 2 in the morning (or after driving it for 8 min) and has a slow coolant loss without visible drip at 155.000 miles with some light white smoke coming out of the exhaust. Oh well, you know what that means. I pulled the head and had it overhauled by a specialist, just to realize that the short block has corroded between cylinders 2 and 3 to a point where I would have to pull it and get it machined. Got an excellent new short block and installed new bearings and rings. I will swap the short block after Christmas and make it new again. When you think you're done....
 
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Registered
1990 300SL-24V, 1999 SLK230 Sport, 2018 Subaru Forester XT touring
Joined
·
97 Posts
Latest update on the Baby Benz. Removed everything from the old short block. Got all new seals and gaskets and cleaned all attachments. Will pull the short block this weekend and install the refurbished one. The new head looks good and was pressure tested in the shop.

 
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Registered
1990 300SL-24V, 1999 SLK230 Sport, 2018 Subaru Forester XT touring
Joined
·
97 Posts
Changed the short block this weekend. Was able to get everything done on two ramps in my garage. Used an engine hoist from my buddy and bought an engine stand at a local parts store. Car started up on first attempt and runs super smooth. Test drive went well without leaks and stumbles. I will upload a couple pictures next week.
 
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Registered
1990 300SL-24V, 1999 SLK230 Sport, 2018 Subaru Forester XT touring
Joined
·
97 Posts
 
Last edited:

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Registered
1990 300SL-24V, 1999 SLK230 Sport, 2018 Subaru Forester XT touring
Joined
·
97 Posts
As you can see I spent some hours fine-tuning the esthetics. I replaced all short block bearings and seals front and rear as well as the piston rings. Cleaned the flywheel and installed it with new bolts. Checked the torque converter and mounted a new tranny front seal. Then I replaced the short block and hauled it back on the tranny with the hoist. Connected the engine mounts and released the hoist. Checked and installed all peripherals and mounted the head with new seals as well as the injection system and air intake. I mostly used new bolts and tightened everything iaw MB torque specs.
Motored the engine with the starter several times without spark and fuel to bring up the oil pressure. Then ran it for 2 min just with oil, no water yet. Let it sit for 20 min and then refilled with water. After that rechecked all connections and did my test drive with heater full hot to get the air out of the coolant system. After 20 min test drive checked for leaks above and underneath as well as coolant consumption. Not a drop. Buttoned it up and will be driving 600 miles before I change the oil and the filter one more time.
P.S:
I didn't have any help on this project. Just the 2 ramps, 1 jack, 2 jack-stands, M111 flywheel locking tool, large torque wrench, the engine hoist, engine stand and some hand tools. If you do it right you can leave the tranny in the car and don't even have to remove the radiator, and the transmission coolant lines. When you pull the engine the torque converter will come of the tranny shaft and it will leak approx. 2 quarts of tranny oil on the ground/pan. Just make sure you install the torque converter correctly (use a new front seal too) and grease the tip so it slips back into the flywheel hub when you install the engine. Then refill the lost fluid. Hope I gave you some ideas.
 
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Registered
2008 SLK350; 2014 C300 Sport; 1998 ML
Joined
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9 Posts
Really nice! That car is one of the most fun to drive. Hard to find them now.
 

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Registered
1990 300SL-24V, 1999 SLK230 Sport, 2018 Subaru Forester XT touring
Joined
·
97 Posts
Latest update. Car drives beautifully. No water leak, loss or drip anymore. Great power and go-cart-like acceleration. One little oil drip from one of the oil pan bolts in the front (the one that goes into the lower timing chain cover and held the tranny line in place). Thread is stripped. I was able to re-thread the hole to a slightly larger thread and tighten to torque. Should be fine. Oil change completed. No surprises or metal anywhere! Filter looked great too.
 

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Registered
1990 300SL-24V, 1999 SLK230 Sport, 2018 Subaru Forester XT touring
Joined
·
97 Posts
The finished engine bay. Block in black, accessories in blue or silver and compressor parts in red.
 
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Registered
1990 300SL-24V, 1999 SLK230 Sport, 2018 Subaru Forester XT touring
Joined
·
97 Posts
Intake valves before first start.
 
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Registered
1990 300SL-24V, 1999 SLK230 Sport, 2018 Subaru Forester XT touring
Joined
·
97 Posts
 
Last edited:

·
Registered
1990 300SL-24V, 1999 SLK230 Sport, 2018 Subaru Forester XT touring
Joined
·
97 Posts
 
Last edited:

·
Registered
1990 300SL-24V, 1999 SLK230 Sport, 2018 Subaru Forester XT touring
Joined
·
97 Posts
 
Last edited:

·
Registered
1990 300SL-24V, 1999 SLK230 Sport, 2018 Subaru Forester XT touring
Joined
·
97 Posts
 
Last edited:
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