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CAM seals for double CAM head 2.5L
IT's not the SVX engine but it's the 2.5 L double overhead CAM engine for the WRX, 2.5 RS and STI. This engine is different then the 3.3 DOHC. The 3.3 uses only one CAM sprocket per engine side where the 2.5 has two CAM sprockets. The 3.3 drives the second CAM shaft with gears where as the 2.5 CAM ahsft is driver by both sprockets. A friend of mine has the 2.5 engine and we were discussing how to change the timing belt. Special tools are needed to hold the CAM sprockets inplace before the T-belt is removed. Without these special tools the CAM shaft can rotate and the valves can crash into each other. The inlet and exhaust valves can hit each other if not turned at the same time. Currently I am glad I do not have this 2.5L engine.
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