Quote:
Originally Posted by Shiny
Very interesting to see!
I'm skeptical they'd pay to plate and hydrogen-relieve just for ID. The bolts are longer, not easy to confuse.... ???
Any chance the copper is to reduce galling? Like anti-seize?
Do these bolts have higher risk than others by being close to exhaust?
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Quote:
Originally Posted by johnta1
I thought it was mainly for the heat. Also possibly to keep the 'rust' from getting bad on them.
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That's a good point. Maybe, they do go through the through the exhaust ports (but not exposed to exhaust). The factory didn't miss much. But it would make sense to have them color coded for "hand assembled" engines. It would be a disaster it the shorter bolts were used and stripped the threads on a new engine. I'd think the factory would consider it scrap and the parts manager would have a happy day.