The 1.8 CVH sump does not fit silvertops ideally, either. The rear crank seal arc has an about 4 mm gap, the front about 2 mm. The CVH gasket is thick in both arc sections. What I did cut down most of the gasket's width in the front crescent, so that the remaining strip compresses to the right thickness. Plus a liberal amount of silicone sealant.
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