4A-GE MK1 Engine Unraveling the Mystery of 7A-GE Cam Timing [Archive] - Toyota MR2 Message Board

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From SV3Power: Camshaft timing is where a 7AGE gets tricky. Any 7AGE has inherently bad (incorrect) camshaft timing because the distance between the crankshaft and camshafts is increased by a distance that is not an even multiple of the tooth pitch of the timing belt. You see that as soon as you try to install the timing belt and set the cam timing. To see how far off the cam timing has been thrown, we need to do some math. When Toyota created the 7A-FE, they started with the basic 4A