Both intake and exhaust cams are equipped with variable valve timing. Even though the stroke is двигатель для субару форестер 2.5 slightly longer, the FBs exterior dimensions are basically unchanged from the EJs. Subaru achieved this by employing asymmetrical connecting rods like those it used to increase the stroke of the flat-six in the. Tribeca without drastically changing the engine. The lamb-chop-shaped rods also ease assembly of the bottom end. Subaru says 80 percent of the engines cooling capacity is routed to the head, and it even added a cooling circuit to the exhaust-gas recirculation channel. By doing this, it was able to reduce NOx emissions. The intake manifold is plastic, like the outgoing EJs (save the cast-aluminum unit on the STI but this new manifold incorporates four tumble-generation valves, one just upstream of each port. They look like half of a throttle valve and, through electronic control, manipulate the intake flow to maximize efficiency. More Payoffs Imminent Doing a complete overhaul of an engine.

(Those figures apply to both the manual and the automatic; last years Forester carried ratings of 20/27 with the stick and 20/26 with the slushbox.) двигатель для субару форестер 2.5 A 1-mpg improvement in city efficiency may not seem like much, but with the transmission and drivetrain staying the same, five percent is a fairly substantial gain. Subaru claims a 28-percent reduction in friction losses within the engine, with the biggest contributors being lighter pistons and connecting rods, as well as a drop in piston-ring tension. The less the engine has to work to keep spinning, the more efficient it can be. New Heads on the (New) Block Despite all the similarity to its predecessors specifications, the FB is all-new, including the block and the heads. The biggest fundamental difference between old and new is that the FBs camshafts are chain driven, with all variations of the engine now carrying twin cams in each head. Going to chain-driven cams allows the valves to be placed.



Двигатель для субару форестер 2.5
Двигатель для субару форестер 2.5
Двигатель для субару форестер 2.5
Двигатель для субару форестер 2.5
Двигатель для субару форестер 2.5
Двигатель для субару форестер 2.5
Двигатель для субару форестер 2.5
Двигатель для субару форестер 2.5
Двигатель для субару форестер 2.5
Двигатель для субару форестер 2.5