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did anyone tell you to check the timing chain? 22r toyotas had dual row chains up to 1981 then they got chintzy in and switched to single row with nylon guides that always break- especially on first start up when there is no oil preasure. If you want to switch to dual row and metal guides your motor has to be 84 or earlier (the stroke and deck height are different) and a new oil pump spline for about 30$. If your motor isn't in the years listed you can get a dual set from L.C. engineering in AZ. for something like 450$. I'm not sure but it might be DOA racing that offers metal guides which is a lot cheaper than L.C.s kit, and much more practical for a stock motor. If the guides are broken or missing (driver's side always breaks first) then it should be dealt with asap to avoid major engine damage. If you decide to tackle this job don't fallow the haynes or factory book because they want you to take the head off and all you need to do is remove the oil pan
 
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