Oil Pump, 26mm Gears, 8mm Bolt for 56-70 Flat Cams, Schadek

OVERVIEW

When it comes to the heart of your air-cooled engine''s lubrication system, there is no name more trusted in the industry than Schadek. This high-performance oil pump features 26mm gears, providing a significant increase in oil volume and pressure compared to the original stock pumps found in early Volkswagen powerplants. For any VW enthusiast building a reliable street cruiser or a spirited weekend warrior, maintaining consistent oil flow is the single most important factor in extending engine life and keeping cylinder head temperatures under control. By upgrading to 26mm gears, you ensure that your bearings, lifters, and valve train receive a steady supply of oil even under high-load or high-temperature conditions where thinner oil might otherwise lead to pressure drops.

This specific Schadek pump is engineered for the classic "flat cam" configuration, which was standard on most Volkswagen engines from 1956 through 1970. It is designed to work seamlessly with cases that utilize 8mm oil pump studs, offering a precision fit that eliminates the risk of internal leaks or cavitation. Whether you are refreshing an original 1600cc dual port or building a custom stroker engine with an early-style three-bolt camshaft, this pump provides the mechanical integrity required for modern driving demands. Don''t settle for inferior, no-name reproductions that can suffer from poor tolerances; the Schadek 98-1122-B is the professional choice for builders who demand "set it and forget it" reliability for their Volkswagen engine.

FITMENT

This oil pump is designed for air-cooled Type 1, 2, and 3 engines equipped with a flat-style (3-bolt) camshaft and 8mm case studs. Please verify your camshaft style before ordering.

• Volkswagen Beetle (Type 1): 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970
• Volkswagen Bus / Transporter (Type 2): 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970
• Volkswagen Karmann Ghia: 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970
• Volkswagen Type 3 (Squareback, Fastback, Notchback): 1961-1970 (Specifically for flat-cam equipped engines)
• Custom Applications: Any VW-based sand rail, dune buggy, or trike engine utilizing a 1956-1970 style engine case with 8mm studs.

SPECS

• Manufacturer: Schadek
• Schadek Part Number: 10-042
• Appletree Part Number: 98-1122-B
• OEM Reference: 111-115-107AKHD
• Gear Size: 26mm (High Volume)
• Camshaft Style: Flat Cam (Early 3-Bolt style)
• Mounting Hardware: Designed for 8mm Studs
• Body Material: High-density cast aluminum
• Gear Material: Precision-machined steel alloys
• Compatibility: 1200cc, 1300cc, 1500cc, and 1600cc based engines

PRO TIPS

1. Always Prime Before Initial Startup

One of the most common mistakes in engine assembly is attempting to start a dry engine. Before you install the oil pump cover, we highly recommend packing the gears with a light coat of assembly lube or high-quality engine oil. Once the engine is fully assembled but before you install the spark plugs, crank the engine over using the starter until you see the oil pressure light go out or a mechanical gauge shows pressure. This ensures that the 26mm gears are fully lubricated and ready to pull oil from the sump immediately upon combustion, preventing premature wear on your brand-new pump and bearings.

2. Verify Camshaft Clearance

While this pump is a direct fit for 1956-1970 flat cams, aftermarket high-lift camshafts can sometimes have bolts or gear faces that sit slightly proud. Before final torquing of the oil pump nuts, it is a "pro-level" move to dry-fit the pump and rotate the engine by hand. Listen for any clicking or feeling for any resistance. If the cam bolts hit the back of the oil pump body, you may need to lightly clearane the back of the pump housing or use low-profile cam bolts. Ensuring there is no mechanical interference is critical for a long-lasting build.

3. Use the Correct Gasket Thickness

The efficiency of your oil pump is largely determined by the "end play" between the gears and the pump cover. When installing your Schadek 26mm pump, always use the high-quality, thin paper gaskets provided in your rebuild kit. Do not use RTV silicone or thick sealant on the pump face, as this can increase the gap between the gears and the cover, leading to a significant loss in oil pressure. For the best seal, we recommend a very light smear of Permatex Aviation Form-A-Gasket on the paper gasket surfaces to ensure a leak-free seal without adding unnecessary thickness.