Nissan HRA2DDT / Renault H5Ft

The Nissan HRA2DDT (1.2 DIG-T) / Renault H5Ft (1.2 TCe) is a 1.2 l (1,197 cc, 73.04 cu-in) straight-four 4-stroke direct injected and turbocharged gasoline engine from Nissan HR-family. The HRA2DDT engine was co-developed with Renault. In Renault production line this engine is called H5Ft.

The HRA2DDT (H5Ft) features lightweight aluminum block with five-bearings crankshaft and aluminum head with two camshafts and four valves per cylinder (16 valves in total).

Compression ratio rating is 10.1:1. Cylinder bore and the piston stroke are 72.2 mm (2.843 in) and 73.1 mm (2.878 in), respectively. The Nissan HRA2DDT / Renault H5Ft engine is equipped with the direct injection fuel system, variable valve timing system (C-VTC) on the intake and exhaust camshafts, variable displacement oil pump, “Stop-Start” system, regenerative braking system, ignition system with individual ignition coil for each plug and turbocharger.

It produces from 100 PS (74 KW; 99 HP) at 4,500-5,5000 rpm to 132 PS (97 KW; 130 HP) at 5,500-5,700 rpm of horsepower and from 165 Nm (16.8 kg·m; 121.8 ft·lb) at 1,750 rpm to 240 Nm (24.5 kg·m; 177.1 ft·lb) at 1,600 rpm of torque.

The breakdown of the engine code is as follows:

• HR – Engine Family
• A2 – 1.2 Liter Displacement
• D – DOHC (Dual Overhead Camshafts)
• D – Direct Injection Fuel System
• T – Turbocharger

Renault uses the following brands for these engines:

• TCe115 – 115 PS (85 KW; 114 HP) at 4,500 rpm and 190 Nm (19.4 kg·m; 140.2 ft·lb) at 2,000 rpm
• TCe120 – 120 PS (88 KW; 118 HP) at 4,900 rpm and 190 Nm (19.4 kg·m; 140.2 ft·lb) at 2,000 rpm
• TCe130 – 132 PS (97 KW; 130 HP) at 5,500 rpm and 205 Nm (20.9 kg·m; 151.3 ft·lb) at 2,000 rpm

General information

Cylinder block

The HRA2DDT-H5Ft uses an aluminum cylinder block with five bearing support system. The engine has two compression and single oil control ring. The crankshaft and camshaft journals are finished with a polishing tape to produce a mirror-like finish. The result is a thorough reduction in friction on these bearing surfaces of key engine components.

Main bearing cap

• 32.4 Nm; 3.3 kg·m; 24 ft·lb

After securing bearing cap bolts, make sure crankshaft turns smoothly by hand.

Connecting rod cap

• Step 1: 25 Nm; 2.6 kg·m; 18 ft·lb
• Step 2: Turn nuts 110°

Cylinder head

The cylinder head is made of light aluminum alloy which gives it good cooling efficiency. Each camshaft is supported by five bearings. The HRA2DDT-H5Ft engine has variable valve timing system (C-VTC) on the intake and exhaust camshafts.

Intake valves are 26.48-26.72 mm (1.0425-1.0520 in) in diameter and the exhaust valves are 23.38-23.62 mm (0.9205-0.9299 in). The HRA2DDT (H5Ft) does not have hydraulic lifters, so special valve lifters are used to adjust the valve clearance.

Head tightening procedure and torque specs:

• Step 1: 25 Nm; 2.6 kg·m; 18 ft·lb
• Step 2: Turn all bolts 270°

Camshaft sprocket bolt

• 75 Nm; 7.7 kg·m; 55 ft-lb

Maintenance data

Valve clearance adjustment data

Calculate the thickness of new adjusting valve lifter so valve clearance comes within specified values.

R = Thickness of removed valve lifter
N = Thickness of new valve lifter
M = Measured valve clearance

Intake:
N = R + [M – 0.30 mm (0.012 in)]
Exhaust:
N = R + [M – 0.50 mm (0.020 in)]

Valve lifters are available in 31 sizes range from 2.96 mm (0.1165 in) to 3.56 mm (0.1402 in), in steps of 0.02 mm (0.0008 in).

Example (intake valve):
R = 3.10 mm
M = 0.52 mm
N = 3.10 + (0.52 – 0.30) = 3.32 mm, so we need a valve lifter with identification mark 332.

Vehicle applications

Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.