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07-08-2009 02:27 PM #1
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07-08-2009 05:39 PM #2
- Location
- Saratoga, CA, United States
Member No: 73302
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- Apr 2003
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My out-of-the-blue thoughts...
Well, I've got an S52 (no issues - hydraulic).
But, with the S54's solid lifters...
If the clearances are too wide, there can be noise - you know, clickety-clack, somewhat irregularly if they're not all even. Possibly somewhat reduced power at high rpms. Possibly higher wear on components.
As for too tight clearances, I just rebuilt the head on my e30 and did the old eccentric-cam rocker adjustments.
Symptoms there were a *very* irregular idle and *no* valve tapping noises. Valves were too tight from the machine shop (<.008"). Adjusted to .012 all around and idle is now butter smooth.
hope this helps. i know it's a bit off-mark for you, given engine differences.
<IMG SRC=http://mydrive.roadfly.com/photos/pic.php?u=73302r2fUS&i=2642><FONT FACE="Comic Sans MS" COLOR=Gray SIZE=+1>PaulR</FONT>
<FONT COLOR=Black>'CCA Memb #8743
'99 M-Coupe - Silver/Black
'85 325e - my "Ol' Paint"
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07-14-2009 09:39 AM #3
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07-14-2009 11:24 PM #4
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