View source for Sirius

{{refer_to|
txt=This page refers to the Sirius 2.4L engine used in the TE and TF Magna. For information on other Sirius engines please see [[Sirius family]].
}}

The [[TE]] and [[TF]] Magna used the 4G64, a 2.4 Litre single overhead cam belt-driven 16 valve engine. It was the only engine to be used in the Magna which was not assembled at [[Lonsdale]]. The engine was instead imported from [[Shiga]] in Japan.

The version of the 4G64 used in the Magna featured roller rockers, a one-piece cast camshaft and an alluminum intake manifold. As with other 4G64s there were different camshafts for automatic and manual transmissions.

As with the [[Astron II]], the Sirius engine featured [[balance shaft|balance shafts]], but unlike the Astron these were belt driven, eliminating the chain rattle the Astron became known for.

Due to the $750 price difference between the Sirius and the V6 engine, Sirius powered Magnas are relatively uncommon.

{|
|
==Technical Specifications==
{|cellpadding="3" align="left"
|'''Type'''
|In line 4 cylinder single overhead cam with counter balance shafts. Transversely mounted, 16 valves
|-
|'''Displacement'''
|2350cc (2.4 litres)
|-
|'''Bore'''
|86.5mm
|-
|'''Stroke'''
|100mm
|-
|'''Maximum oversize'''
|1.00mm
|-
|'''Compression Ratio'''
|9.50:1
|-
|'''Piston bowl volume'''
|20.7cc
|-
|'''Firing Order'''
|1,3,4,2
|-
|'''Power Output'''
|105 kW @ 5500 rpm , 205 Nm @ 3000 rpm
|-
|colspan="2"|'''HEAD SPECIFICATIONS'''
|-
|'''Type'''
|Alluminum Alloy with pentroof combustion chambers and crossflow design. 4 valves per cylinder.
|-
|'''Inlet Valve Diameter'''
|34.30mm
|-
|'''Exhaust Valve Diameter'''
|31.80mm
|-
|'''Valve Face Angle'''
|45 - 45.5&ordm;
|-
|'''Valve Clearance'''
|Maintained by hydraulic lash adjusters
|-
|colspan="2"|'''CAMSHAFT SPECIFICATIONS'''
|-
|'''Inlet Opens'''
|16&ordm; BTDC
|-
|'''Inlet Closes'''
|60&ordm; ABDC (Manual transmission), 53&ordm; ABDC (Automatic Transmission)
|-
|'''Inlet Duration'''
|256&ordm; (Manual), 249&ordm; (Automatic)
|-
|'''Exhaust Opens'''
|60&ordm; BBDC (Manual transmission), 50&ordm; BBDC (Automatic transmission)
|-
|'''Exhaust Closes'''
|16&ordm; ATDC
|-
|'''Exhaust Duration'''
|256&ordm; (Manual), 246&ordm; (Automatic);
|-
|'''Overlap'''
|32&ordm;
|-
|'''Inlet Cam Lobe Height'''
|37.39mm
|-
|'''Exhaust Cam Lobe Height - Automatic Transmissions'''
|37.14mm
|-
|'''Exhaust Cam Lobe Height - Manual Transmissions'''
|36.83mm
|}
|-
|{{Mitsubishi Engines}}
|}
[[Category: 2.4L Technical]]
[[Category: Third Generation Magna/Verada]]