specs for 1.2 1.3 engines


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Buick Ownership
has anyone been able to find out the complete engine specs for the new 1.2 1.3 engines? GM seems to be keeping them a secret
sure would like to know


New member
Buick Ownership
thank you for that i was looking for things like compression ratio, firing order, direct injection type.
GM has not published any info that i can find


New member
Buick Ownership
thanks everyone for replies i am looking for the new 3cyl 1.2 1.3 engines in the encore gx


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Magnetic Hill, New-Brunswick, Canada
Buick Ownership
2016 Encore
I found this on the 1.3l

1.3L Turbo Engine

All-wheel drive models of the Encore GX feature the turbocharged 1.3L inline 3-cylinder engine (RPO L3T). (Fig. 14) The engine also is optional on some front-wheel drive models. Built using the new cylinder set strategy (CSS) engine architecture, it delivers 155 horsepower and 174 lb.-ft. of torque.

Fig. 14

It features many of the same structural elements of the new 1.2L engine, including an aluminum alloy engine block and cylinder head as well as cast aluminum pistons.

The lubrication system includes a continuously variable oil pump, an oil filter bypass valve, and an oil heat exchanger, which is mounted to the lower right side of the engine. The lower oil pan is made of plastic and is attached at the engine block lower structural extension. The oil pan must not be used for lifting the engine, as noted by the icon on the pan. (Fig. 15) These oil pans are equipped with M5 jackscrews for easy removal. Once properly cleaned, the oil pan is reusable.

Fig. 15

The camshaft actuator system on the cylinder set strategy engine is much like the camshaft actuator systems found on other GM engines. The system enables the Engine Control Module (ECM) to change camshaft timing while the engine is running. The intake and exhaust camshaft position actuator assemblies vary the camshaft position in response to directional changes in oil pressure, providing enhanced power and efficiency. There are two camshaft position sensors, integrated into the camshaft cover, that send feedback to the ECM.

The cooling system on the cylinder set strategy engine is called active thermal management and is used to control the coolant temperature. (Fig. 16) The system helps the engine and transmission warm up in order to reach its optimal temperature more quickly. Likewise, this system cools the engine and transmission when necessary for high power operation.

Fig. 16

And this on the 1.2l

1.2L Turbo Engine

The turbocharged 1.2L inline 3-cylinder engine (RPO LIH) is standard on front-wheel drive models. (Fig. 11) It’s paired with the VT40 continuously variable transmission (RPO MRG). The engine produces 137 horsepower and 166 lb.-ft. of torque.

Fig. 11

The cylinder head is a dual overhead camshaft design made of cast aluminum alloy. Its combustion chamber contains four valves per cylinder.

The engine has two camshafts, one for the intake valves and another one for the exhaust valves. The camshafts are driven using a Belt-in-Oil system. This system reduces noise and friction compared to timing chains and dry belt systems. Both the timing belt and the oil drive belt have a change interval of 150,000 miles (240,000 km) or 15 years.

The aluminum alloy engine cylinder block is made by high pressure die casting with three cast-in-place iron cylinder liners. (Fig. 12) Of the four crankshaft bearings, the thrust bearing is located on the third bearing from the front of the engine. A lower structural extension forms the lower portion of the crankcase to promote cylinder block rigidity and reduce engine noise and vibration.

Fig. 12

The cast aluminum pistons are a lightweight and low-friction design with a recessed top and a barrel-shaped, graphite-coated skirt. The pistons use two compression rings and one oil control ring assembly. The chromium steel pins are designed to be full-floating and must be serviced with the pistons as an assembly.

The oil cooler heat exchanger is mounted to the lower left side of the engine, on the coolant pump housing, and is used to cool the engine oil.

And as you can see here a lot is yet to be determined (TBD) at least you know it is direct injection.

GM 1.3L Turbo I-3 L3T Engine Specs
Displacement:1.3 liters
Configuration & Cylinders:Inline 3 (I3)
Vehicle Engine Orientation:Longitudinal or Transverse
Valve configuration:Dual Overhead Camshafts (DOHC)
Valves per cylinder:4
Compression ratio:TBD
Assembly site:TBD
Valve lifters:TBD
Firing order:TBD
Bore x stroke:TBD
Fuel system:SIDI (Spark Ignited Direct Injection)
Fuel Type:TBD
Maximum Engine Speed:TBD
Emissions controls:TBD
Cylinder head:TBD
Intake manifold:TBD
Exhaust manifold:TBD
Main bearing caps:TBD
Connecting rods:TBD
Additional features:TBD
Last edited:


New member
Buick Ownership
Again Hi. i found it. this engine came out of euro design. Puretech 3 cyl by PSA.
first brought out in 2015 when PSA and GM were still partners.
found all the specs on that site.
GM will make changes of course but still same engine. thanks
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