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Neil Harvey Neil Harvey is offline
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Join Date: May 2004
Posts: 218
Glad things have worked out for you. You bring up a really important point about the spring retainers. Titanium retainers are bought and sold as an upgrade, but often never told is the need for regular inspection.

Spring retainers have to be tight fitting to the springs. When left loose they will wear. When tight fitting the spring will over time dig into them. All very common. Titanium hates inclusions and nic's and will fail. Most Titanium retainers built by reputable manufacturers, used in racing are coated to help against wear. We use retainers built to our design by one the worlds leading valve train manufacturers, but the parts are life'ed out after so many hours. The retainers we saw in the above heads were badly worn and would have failed at some point.

My advice is to check them regularly and if you wish to use them, know that they will need to be changed out at some point. Or change back to steel and tool steel versions are the better of the two steels.
Old 11-19-2017, 05:25 PM
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