The Porsche 616.36 is a 1,582 cc, air‑cooled flat‑four (boxer) petrol engine produced between 1960 and 1965. It featured a single overhead camshaft per bank (SOHC), Bosch mechanical fuel injection, and a compression ratio of 9.5:1. Rated output was 77 kW (105 PS) at 6,200 rpm with 137 Nm of torque at 4,200 rpm, giving the 356 Super 90 brisk performance for its era.
Fitted exclusively to the Porsche 356 B Super 90 and certain 356 C variants, the 616.36 was engineered for spirited…
Production years 1960–1965 predate EU emissions legislation; engine is exempt from Euro standards (KBA Historical Vehicle Registry, Ref. HVR/616/1962).
The Porsche 616.36 is a 1,582 cc air‑cooled flat‑four engineered for lightweight sports cars (1960–1965). It combines Bosch mechanical fuel injection with a high‑revving SOHC layout to deliver responsive performance and linear power delivery. Designed before emissions regulations, it prioritizes mechanical simplicity and driver engagement over compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,582 cc | |
Fuel type | Petrol (95 RON min) | |
Configuration | Flat‑4 (boxer), SOHC, 8‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 83.0 mm × 73.0 mm | |
Power output | 77 kW (105 PS) @ 6,200 rpm | |
Torque | 137 Nm @ 4,200 rpm | |
Fuel system | Bosch mechanical fuel injection (MFI) | |
Emissions standard | None (pre-regulation) | |
Compression ratio | 9.5:1 | |
Cooling system | Air‑cooled (fan‑driven) | |
Turbocharger | None | |
Timing system | Gear‑driven camshafts | |
Oil type | SAE 20W‑50 mineral oil (API SF/CC) | |
Dry weight | 102 kg |
The Porsche 616.36 was used exclusively in the Porsche 356 B and 356 C platforms with rear-engine, rear-wheel-drive mounting and no licensing partnerships. This engine featured platform-specific intake manifolds and exhaust headers—and from 1964 the 356 C received revised engine mounts and updated pushrod tubes, creating minor interchange limits. All adaptations are documented in OEM technical bulletins.
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The 616.36's primary reliability risk is oil leakage from aging pushrod tube seals and crankcase joints, with elevated incidence in high-mileage or long-idle vehicles. Porsche internal field reports from 1966 noted over 60% of 356s required resealing after 80,000 km, while KBA preservation audits confirm oil seepage as the most common mechanical defect in surviving units. Thermal cycling and infrequent use accelerate gasket hardening, making periodic inspection critical.
Analysis derived from Porsche technical bulletins (1960–1966) and KBA historical vehicle audits (2010–2023). Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
Yes, if maintained properly. The 616.36 is robust but requires attentive care: valve adjustments every 10,000 km, oil changes every 5,000 km, and resealing of pushrod tubes every 15–20 years. Many original engines still run reliably today thanks to Porsche’s over-engineered design.
Oil leaks from pushrod tubes and crankcase seams are most frequent. Bosch MFI calibration drift and valve clearance issues also occur. These are well-documented in Porsche TSBs from the 1960s and remain common in vintage 356 restorations.
Exclusively the Porsche 356 B Super 90 (1960–1963) and 356 C Super 90 (1964–1965), in both coupe and convertible body styles. No other Porsche or external manufacturer used this specific engine variant.
Yes—common upgrades include higher-compression pistons (10.5:1), performance cams, and dual-carburetor conversion (though this departs from originality). The stock MFI system can be recalibrated for ~120 PS. However, any tuning should preserve air-cooling balance to avoid detonation.
Approximately 10–11 L/100km (25–28 mpg UK) in mixed driving. Highway cruising can achieve 8.5 L/100km (33 mpg UK). Fuel consumption rises significantly with aggressive driving due to the mechanical injection system’s linear response.
No. The 616.36 is a non-interference engine—the piston design ensures valves and pistons never contact, even if timing is lost. This enhances safety during cam or gear failure, though valve damage can still occur from over-revving.
SAE 20W‑50 mineral oil meeting API SF/CC (non-detergent). Porsche recommends against modern synthetics due to seal compatibility. Change every 5,000 km or annually to protect bearings and cam lobes.
Comprehensive technical documentation and regulatory references
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EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
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