STD Series

STD (The DSI Standard) is the package for which Datsun Spirit is known for, hence the name, STD (Standard), and only at this level do you begin to really see the full benefit of the DSI engine components. This is the DSI standard which is far from your traditional standard anything.

True Natural Aspirated Performance Standard for the L-engine.

STD engine is equipped with our signature STD head, which has significantly larger ports, re-shaped combustion chambers to optimize the combustion, race valve guides & DSI big valves, and equipped with the DSI proprietary grind STD cam, which has drastically higher lifts yet extremely smooth torque curve from the low to high RPM range. The acceleration of the STD engine is Explosive...the way a true high performance natural aspirated engine should be. The best part is, we assembled this for street in mind...this is not a pure race engine. While its output is quite significant, it is extremely smooth from the low RPM to high RPM, so you can win races with it, cruise on a highway, drive in town, or the possibilities are endless.



The STD engine is not only explosive but also extremely fuel efficient...after all, a performance engine is basically a super efficient engine, and we get 26-31mpg on highway, while easily exceeding 100hp per liter at the rear wheels.



Specifications
Base engine:​​ L28 (N42 head + L28 block)
Bore X Stroke:​​ 89mm (or similar) bore x 79mm stroke 3.0 liter setup. (83mm (3.1L) possible) Special cylinder block modification
Pistons:​​​ DSI ultra light weight pistons
Rods:​​​ DSI H-beam rods
Sprocket: Adjustable Cam Sprocket
Crankshaft:​​ L28 crankshaft modified
Cam: DSI proprietary grind STD cam: 300 duration, .560 lift
Valve train:​​ DSI Big Valves, DSI Phosphate Bronze race valve guides, DSI STD series valve springs & Retainers, DSI equal chip height Special Rocker Arms
Gasket: DSI Big Port manifold gasket
Head Gasket: Multi Layered Metal Head Gasket Compression:​​ 11.5 or above
HP:​​​ Approximate 110 to 115HP per liter

Base Price: $11,000

Note: The STD engine should go with the DSI triple carburetor setup, DSI slide valve carburetor setup, or DSI Throttle Body Fuel Injection setup. STD can NOT be run with SU carbs.

FAQ, Engine Cores, and Horsepower
Please see our Frequently Asked Questions for answers to common questions about our motors and additional modifications necessary for your new DSI motor. Additionally, please read about sending and obtaining Engine Cores, and our Note on Horsepower for why our stated horsepower figures are guidelines, not quotes.