I'll dig up and post the picture of the retainer when I get home from work tonight.
It was literally sheared exactly in half. I found the two pieces still in place between the HLA and the valve spring. A harder retainer is what's needed. This has only been a documented problem on KL31 heads, as they (probably) would use larger diameter retainers along with the larger HLA's and possibly larger springs?
In some ways it's impressive how one shear destroyed a whole engine, and in other ways it's kind of depressing.
Honestly, I would suspect that anyone interested in a serious performance build engine would want to use the KL31 (ZE) heads, just because of how much better the intake ports are from the factory. It'd take a *lot* of porting to take a KL head to that state.
It was literally sheared exactly in half. I found the two pieces still in place between the HLA and the valve spring. A harder retainer is what's needed. This has only been a documented problem on KL31 heads, as they (probably) would use larger diameter retainers along with the larger HLA's and possibly larger springs?
In some ways it's impressive how one shear destroyed a whole engine, and in other ways it's kind of depressing.
Honestly, I would suspect that anyone interested in a serious performance build engine would want to use the KL31 (ZE) heads, just because of how much better the intake ports are from the factory. It'd take a *lot* of porting to take a KL head to that state.
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