Engine - rebuild or replace?

[Colin Wilks]

Once you've bored out the block for liners there's not much metal left between the bore and the base flange. A cam with high acceleration coupled with overly strong valve springs can lead to failure. This is why Chris Garner rightly suggests a more mild cam. I'd also recommend that you think hard about valve spring strength. The general rule is use the weakest ones that will do the job.

Charles

When I got the car the valves were sticking and the camshaft gear was damaged so the camshaft had to come out. On Nick Turley's advice I reaseembled using only the outer valve springs. I plan to use standard single valve springs on this rebuild.