So let’s think about this. You build your engine with the correct straight spring, and use a quality retainer and such.
Then switch to a beehive. What do you gain? If you gain RPM then I would go back and look at what was wrong with the straight spring.
Because I have weighed a 1.500 Ti retainer, a lightweight steel retainer and a beehive retainer that was suggested for the same cam and there wasn’t 10 grams between them.
I can tell you that dropping to a .310 stem from a .342 valve is far more important than that little weight you may save with a BH spring and retainer.
And then you have the option of Ti valves. Valve weight is far more critical than retainer weight (within reason) and what the top of a BH spring weighs.
That’s why I always ask what do you gain. I’ve probably already read the ST links above but I will go back and read them to refresh my memory. I’m betting they didn’t just drop on a set of beehives and rotate the earth.
