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I am not familiar with the engine so I am unable to tell you whether the camshafts are interchangeable but I speculate the most likely scenario is the sprockets are dimensionally the same and in that case it would be the usual practice to engrave the intake timing mark one face and the exhaust timing mark on the other. Where the timing marks share the same relationship with the keyway it wouldn't really matter which wheel was fitted to which cam and which way around.,.
I THINK THE CAMSHAFT SPROKECTS WORKS AT INTAKE, AND EXHAUST CHECK "I" IS FOR INTAKE AND "E" IS FOR EXHAUST, AND CONFIRM THE POSITION OF THE VALVES - EXHAUST CAMSHAFT IS CLOSE TO THE WALL, AND INTAKE CAMSHAFT IS CLOSE TO RADIATOR. IF YOU DONT SEE MARKS, THE ONE THAT GOES AT EXHAUST GEARS COVERED. AND INTAKE OPPOSITE.
With Cam Caps loosened, FIRST loosen timing chain tensioner, press it in to loosen tension, Crank using ratchet to TDC (Top Dead Center on crank pully, (to keep from damage to pistons), align Exhaust Cam Timing Mark to mark on #1 Exhaust cam cover, then take up slack between Exhaust & Intake Cams (on top between the cams), Then align the Intake Cam to mark on #1 Cam Cap, "Now" loosen the 17mm bolt to tighten timing chain, rotate engine using rachet two times, reset TDC at the crank, and look at "Cam Timing Marks on both the Exhaust, and Intake Cams. If you did all this correctly the "Timing Marks" should be lined up so TDC,Exhaust, and Intake marks are all the same.
I am not sure how it can be out of time when the dots * to * line up exactly on both the front and rear cam. I just dont understand how one is supposed to get the service bolt in the rear cam since it is on the bottom of the exhaust gear.
first off its a timing belt second there is a yellow factory mark on only 1 cam and thats cause only 1 cam is driven by the belt the exhaust cam is gear driven off of the intake cam under the valve cover not even near the belt
the variable timing wheel should be on the inlet cam. the timing marks should align on cams upper of rear inner belt cover the crank upper of oil pump housing
Click on the following free direct Link. It has the Timing: Pulley, Belt and Mark Diagrams for your 1996 Toyota Camry. Plus additional Instructional and Directional Diagrams.
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simple to figure that out . the key ways are always up on camshafts. it allows for them not to fall out when assembling the engine . so use the balancer to determine tdc (top dead center on cyl one) and make sure both keys are straight up . (just loosen the cam retainer nuts and look to see what set of marks they line up with and dont forget t re-torque them to factory specs somewhere between 22 and 28 ft lbs but not a lot more) , google the specs up to be sure
On EJ 25 motor teeth count is as follows. From crank shaft mark to intake on drivers side is 51 T, 28 T to exhaust. From crank to passenger side Intake is 54.5 T then 28 T down to exhaust. Hope this helps and have a great day.
on the intake cam use the middle mark in between the big one and the other small one on the exhaust cam use the use the smallest mark farthest away from the 2 small marks on the same tooth. line those 2 marks up on the same tooth in the middle.
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