The larger engines make more power. I've been doing some research on a replacement head and found out there's quite a few. The intake valve duration is 248°, valve lift is 10. It can be machined for 2. We have many different versions of this engine including a 4. If you know what to look for, you could find an uncut diamond waiting to be polished.
The L23 was based on the design of the original L20. Casting numbers 3782461 and 3782461X used 1. Vortec cylinder heads have the casting numbers located near the valve springs. Later versions could be ordered from the catalog with a V912 casting. The four-cylinder L series engines were replaced with the and later the , while the six-cylinder L series engines were replaced with the and. The rod caps have aircraft grade rod bolts and are dowelled. See Datsun Silvia S110 sold out U.
The crankshaft is a special steel forging; fully balanced, it turns out smooth, dependable power at high speed. We feel this is extremely fair for parts in good to excellent condition. Bore and stroke is 83 mm × 73. Album click to view Album click to view However, why bother these days? I've been doing some research on a replacement head and found out there's quite a few. New struts are not required. Point me towards more information or even just opinion. Bore and stroke are 84.
Select an engine part in the interactive diagram below to explore your engine and the important components that keep everything ticking over. We try to represent them in their actual condition and try to offer pix wherever possible. The basic L28 is carburetted. This L14 twin cam head engine has flat exit side exhaust ports, the early 12 bolt rocker cover and the coolant discharge on the inlet side of the head. Exhaust valves can be 1. Usually the bottom end is using a Tsubakimoto dry sump pump.
Not to be confused with the 2-liter six cylinder L20. Are any of these worth a performance rebuild? Can K-Seal Fix My Cylinder Head? The combustion chamber volume for these heads is typically about 41 cc. Iida tells us this rapid design was accomplished by taking the drawings of the block, from a previously designed L Type 4 Cylinder Engine and adding two cylinders to it. Most users of this type of spray bar report seeing a lower at the , but it does not appear to affect engine operation in practice. The forged U60 crankshaft also ushered in the use of a six-bolt flywheel boss.
The exhaust ports and exhaust manifold-bolt holes are in the same location. It produces 77 hp 57 kW. These heads usually have 1. Also a factory driveshaft can be used. Datsun used them in Sunny Excellents as well. The most popular modification is the 3 mm 0. However, the flathead V-8 was a definite reason Chevrolet had to step-up its game.
The casting number on this head is 3795896. Intake valves are 42 mm 1. The L20B 2-liter engine is a tall-block variation but can still and without cutting the sheetmetal. The engine is equipped with single, 2-barrel, downdraft carburetor that incorporates a special device to control emission. The valve system has a pivot type rocker arm that is activated directly by the cam mechanism.
The is closely related but has a crossflow cylinder head with better all-around torque and fuel economy. It received multiple top rankings in some events. Aluminum with 53cc chambers, angle plugs, reverse-flow cooling, 175cc intake ports, 68cc exhaust ports. These engines are known for their extreme reliability, durability, and parts interchangeability. If the cylinder head fails, it will lead to the engine and by extension the vehicle breaking down.