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Showing results for tags 'worn cam'.
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Well, what started out as the perfect Sunday of wrenching on the Z in 75 degree weather didn't end up so well. My plan was to adjust the valve clearances on my '78 280z today and here is what I found when I pulled the valve cover off: [ATTACH=CONFIG]53851[/ATTACH][ATTACH=CONFIG]53852[/ATTACH][ATTACH=CONFIG]53853[/ATTACH][ATTACH=CONFIG]53854[/ATTACH] The photos are slightly out of order, but the worst is toward the rear of the engine, where there was funk built up along the sides of the lobe (where the rocker doesn't make contact) and some contact areas were also coarse to the touch. I went ahead and did the adjustment anyway and to add insult to injury, they still tick. About 9 of the 12 were out of spec. So, my diagnosis is that the cam is shot and the rockers probably are as well. I would really appreciate hearing some opinions from members who have come across this and dealt with swapping out cams/rockers in the past. It's not my daily driver (though I do drive it quite frequently and have put about 3,000 miles on it since I bought it...oops...), so it can sit until I figure out what to do. The eventual plan was to put a mild cam in there anyhow, so maybe this is the perfect excuse to just go ahead with that. Many thanks in advance.