Reply to "Rocker stud got loose, again"

panterrorMy 74 GTS

Anders,

I noticed on one of your posts elsewhere this was a Fontana block.

For an alloy block and solid cam, one other thought would be your lash setting. Are you setting lash hot or cold and how much? If you are setting it hot and fairly tight, the growth in aluminum block/head pushrod engine can result very low lash at cold. That would certainly pose the potential to create such a problem. For a couple hundred degrees F temperature difference the change can be as much as .015”. Alloy engines can loosen up quite a bit as they warm up but with that kind of growth potential it’s easy to understand why they can tend to be set up in a manner that would make them very tight cold. Always advisable to be gentle with such engines on start up until they are brought to full temperature. Many similar race engines have preheating systems to help with such issues.

Best,
K

10/25/157:59 AM

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