Valve adjustment with swivel foot adjusters |
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Valve adjustment with swivel foot adjusters |
Geezer914 |
Nov 1 2021, 09:19 AM
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#1
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Geezer914 Group: Members Posts: 1,460 Joined: 18-March 09 From: Salem, NJ Member No.: 10,179 Region Association: North East States |
When adjusting valves with swivel foot adjusters, are you adjusting them with "0" lash or .004 that Porsche recommends? My thinking "0" lash does not allow for heat expansion and the valves will not fully seat. (IMG:style_emoticons/default/popcorn[1].gif)
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Superhawk996 |
Nov 1 2021, 01:02 PM
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#2
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914 Guru Group: Members Posts: 5,916 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch |
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Ya' all also forgot that the rockers sit on top of a chunk of aluminum that also expands outward (rocker arm axis getting further from case centerline). That thermal expansion is proportional to change in temperature and has a much higher operating temp (300F or so) than the case, or chromemoly pushrods. Bottome line: you're picking up operating clearance to chromemoly pushrods as the head expands too. |
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