Engine
R107 Oil Leaks: Where They Come From and What to Fix First
The usual oil leak points on an R107 V8, how to trace a leak to its source, which leaks are urgent and which are normal for the age.
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Engine
R107 Valve Cover Gasket Replacement
How to spot a leaking R107 valve cover gasket, what parts to buy, and how to replace it step by step.
Engine
R107 V8 Firing Order and Cylinder Numbering
The firing order and cylinder numbering for the R107's V8 and six-cylinder engines, plus tips for routing plug wires correctly.
Engine
M116 vs M117: What’s the Difference?
The differences between the Mercedes M116 and M117 V8s used in the R107: displacements, which car got which, shared parts and how to tell them apart.
Engine
R107 Engine Swap Options
Engine swap talk on R107s ranges from within-family upgrades to fantasy non-MB transplants. Fitment, wiring, fueling, mounts, emissions legality, and cost decide…
Engine
R107 Smoking on Startup: Valve Stem Seals
Blue smoke on startup that clears quickly usually points at valve stem seals. Continuous smoke under load is broader wear. Pattern first,…
Engine
Mercedes M116 V8 (380SL): Problems and Reliability
The M116 aluminum V8 in many 380SL cars is fair and durable when cooling, oiling, and timing-chain history are honest. Loud internet…
Engine
How Often to Replace the Timing Chain on an R107
Timing chain intervals on R107 engines are not one sticker number for every motor and market. Treat chain health as condition- and…
Engine
Mercedes M117 V8: Problems, Reliability and What to Watch
The M117 is the big-displacement V8 that defined many R107s people actually want to drive. It is durable when oiling and cooling…
Engine
560SL Horsepower: US vs Euro and Why
Why a US 560SL’s horsepower number is lower than Euro brochure dreams — and what that means on the road.