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Re: how hard is it to rebuild the top end?? i am getting some strange
Posted by Johnk (more from Johnk) on Thu, 20 Sep 2001 11:02:47
In Reply to: how hard is it to rebuild the top end?? i am getting some strange, joel, Thu, 20 Sep 2001 00:02:27
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Easy to remove valve cover, but you really should put a new gasket set on. re: noise, depending on year (up to 85-86???), your car may have the plastic tube oil delivery set up for the top end. the little orings that seal the tubes in the head might need replacement or one of the tubes may have cracked. Easy to fix in any case. Newer 900's have an internal lube system that should not be your problem. Bad hydraulic lifters will usually clatter for a longer time and eventually make noise constantly. Another source of clatter at start up can be your timing chain hitting the top of the valve cover. If you're lucky, it might just be the pad in the top of the valve cover that hardens over time and no longer damps the chain noise. Get a new one and replace when you do pull the cover. If you're not so lucky, the chain might be stretched to the point that the beginning of the death rattle is upon you. This can be checked by setting the engine to TDC and checking that the cam marks are lined up(many posts on this on BB under timing chain or headgasket replacement. Also you can check the extension of the chain tensioner on the head(must move A/C compressor aside to gain access), and if it's at 11mm, you are due for a new chain.
posted by 216.75....
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