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Toyota Rav 4 Engine >> VALVE LASH ADJUSTMENT ON 1.8L 7AFE TOYOTA ENGINES
Valve Lash Adjustment For
1993-97 Toyota 1.8L 7AFE Engines
The AERA Technical Committee offers the following information regarding adjusting valve lash for 1993-97 Toyota 1.8L 7AFE engines. The procedures and lifter type used for this engine is a little different than previous Toyota engines. Many previously built Toyota engines used a bucket style lifter with a removable hardened disc, which was available in different thicknesses. To adjust the valves in the 1.8L 7AFE engine, camshaft removal is necessary.
The Toyota 7AFE cylinder head uses a non-adjustable solid bucket type valve lifter, which is supplied in different thicknesses. There are a total of 35 lifters supplied to allow for valve adjustment. The area of thickness is measured as shown in Figure 1 below and ranges from .1992-.2260 (5.060-5.740 MM). Each lifter in the selection chart increases in thickness by an additional .0008" (.020 MM). Lifter selection is referred to as a number ranging from 06 to 74, increasing in increments of 2. As an example, lifter 06 is .1992 (5.060 MM) thick and lifter 08 is .2000 (5.080 MM) thick.
Careful cylinder head disassembly and keeping lifters marked as to their original location can save a lot of time when it comes to reassembly and valve adjustment. The lash adjustment for this engine should be made while components are cold and should measure .006-.010 COLD (.152 TO .254 MM) for intake valves and .010-.014 COLD (.254 TO .356 MM) for exhaust valves.
The AERA Technical Committee
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