Kirden
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Ugh, the same bolt that we replaced for the lower part of the alternator about 4 months ago broke again. Snapped the belt cause it went too loose and rupped itself to death at 75mph. This was a grade 8 bolt, anyone know what grade I actually need to hold the alternator on?
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Titanium beats Stainless Steel any day!
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Stainless isn't that strong. Grade 8 should have been more than sufficient. It's breaking due to excessive vibration. usually due to the bolts being too small for the alternator (holes in alternator ears larger than the bolt, common issue when using a newer alt on a L16 mount). You need a bushing in the alt to prevent that, or use a later mount with larger bolts. Also seen excessive vibration from folks going "fancy" with the upper adjuster (using turnbuckles, etc). or e...
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thanks guys, I'll be sure to look into making a bushing. I know the belt wasn't over tensioned. It was actually more loose than the previous belt because we couldn't get it to tighten as much in the rain. The vibration part makes the most sense. I'm using the stock upper arm for the alt, but the holes for the mount are a bit larger from what I remember.
