1GR-FE (4.0 EFI VVT) type'04 - longitudinal layout, multipoint injection, mono-VVT.
Installed in:
4Runner 210, FJ Cruiser, Fortuner 50, Hilux 20..120, Hilux Surf 210, LC 200, LC 70, LC Prado 120, Tacoma 200, Tundra 30..50.
1GR-FE (4.0 EFI DVVT) type'09 - longitudinal layout, multipoint injection, Dual-VVT.
Installed in:
4Runner 280, FJ Cruiser, GX 150, LC 200, LC Prado 150, Tacoma 200, Tundra 50.
Leider leider muss man sich folgendes merken:
Early version (type'2004) have a number differences beside the rest of GR engines.
• "Mono"-VVT - adjustable timing for intake only, in range of 50°.
• The cylinder heads are traditional, without camshafts carrier, without hydraulic lash adjusters.
• There are not spacer in the water jacket.
• More complex crankshaft shape (9 counterweights).
• More massive piston with less reduced skirt.
• The oil filter is installed at he engine top with oil cooler.
• The main cooling fan is mechanical belt driven, mounted with silicone fluid filled coupling, which is controlled by the bimetallic thermoelement, to provides a desired dependence between temperature and fan speed.
1 - bimetallic element, 2 - coupling shaft, 3 - coupling housing, 4 - rotor, 5 - valve. A - fan speed, B - temperature behind the radiator.
• Unusual high RON requirements even for Japanese market version (Regular - only in North America).
• Some models was equipped by additional fuel tank, but simple scheme is implemented - with ejection pump and common filler, without switching system.
• To control the performance of the fuel pump (3 speeds) the separate electronic control unit was installed.
• The fuel system - with return line, the fuel pressure regulator - vacuum, at the intake manifold.
• At the first year of production engines inductive camshaft position sensors was installed..
• ACIS with vacuum actuator instead of the electric drive and somewhat different work algorithm..
A - intake manifold effective length, B - inlet effective length.
• Spark plugs with a long threaded portion, but of conventional materials (Denso K20HR-U11, NGK LFR6C-11).
• Starters - modern with a planetary gear and segment armature coil as well more powerful (2 kW) conventional with reducer (for cold climate).
The second variant (type'2009) was structurally similar to other GR motors. The exhaust timing adjusting (the range is 40° for intake and 35° for exhaust), the camshaft carriers, the spacer in the cooling jacket, more compact pistons, simplified crankshaft were implemented, collapsible oil filter and oil cooler are moved to a separate bracket under the engine, more advanced spark plugs are used (Denso SK20HR11), the exhaust air injection system was applied.
Experience
• No extra rubber elements in the lubrication system, simplified valvetrain - automatically mean the absence of relevant problems specific to 2GR-FE. The timing chain life time is quiet good. Some knocking in the engine compartment are often a normal operation sound of EVAP VSV and injectors.
• Minor defects are more common - oil leak from the timing cover, water pump leak, emission control system failures (oxygen sensors, EVAP).
• Known the spark plugs destruction cases because of overtightening.
• The most unpleasant defect - cylinder head gaskets damage at rear cylinders area, with local overheating and warping the mating surfaces, generally appears as gradual antifreeze consumption, overheating in certain modes and, finally, the exhaust gases in cooling system outburst. The defect is unspecific for the first 100.000 km, but then the probability increases in direct proportion to the mileage. Any failure of the cooling system, such as radiator leak or clogged cells, significantly conduce to it.
Also kurz gesagt: Wasserpumpe im Auge behalten ab 60 tkm, Zündkerzen nicht zu fest eindrehen, Kopfdichtung geht gern mal flöten wenn man im Kühlkreislauf Probleme hat (Wapu!/ Kühler)
Der 1 GRFE braucht ungewöhnlich guten Sprit! Eigentlich nicht unter ROZ92!
Und die Zündspulen machen wohl öfter Ärger...
Zündkerzen werde ich gleich mal umstellen auf die Iridium-Denso...
Quellen
https://www.toyota-club.net/files/faq/1 ... ne_eng.htmhttp://www.motorreviewer.com/engine.php?engine_id=128
