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S hammer's Avatar
 
Join Date: Dec 2007
Posts: 97
912 valve train question

Have an issue with the valve train. Recently rebuilt a couple thousand miles ago. When I go to adjust the valves, all is good till I get to #4. Adjustment is difficult due to the adjustment screw is hard to turn, in & out!
Can anyone help me out on this as it seems to not be too difficult! Or would there be more machining considering the threads for adjustment are binding. Also how to re align the valve train. If a phone conversation would be of benefit, please let me know.

Thank you
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Last edited by S hammer; 12-29-2018 at 08:00 AM..
Old 12-22-2018, 10:01 AM
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Location: Charlotte
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I have encountered adjusting screws that were "stretched" when someone over-torqued the locking nut. The non-threaded section in the middle can stretch. This distorts the thread pitch and causes the adjuster screw to bind. I like to replace all of the adjuster screws on a fresh rebuild.
Hope this helps.
Old 01-03-2019, 01:41 PM
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Thank you for this information. Sounds very logical.
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Old 01-03-2019, 03:47 PM
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