Vacuum Secondary Conversion

340inabbody said

I was under the impression that a solid roller set can ramp faster than say a flat tappet set up and the faster you can control the cycle (I don’t recall if just the compression stroke) the higher the lift and compression you can effectively use with lower chance of detonation. I think I am hearing here that this isn’t true.

Is there anything to this? If so can someone please explain?

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Like I said, cam timing does little to reduce detonation.

I see it all the time. Way more cam than the compression will handle and they run like crap.

The fix is less cam or more compression.

I know everyone wants one answer for detonation and how to control it but that’s not how it works.

It is the aggregate of things done when you build the engine on paper that allows you to run more compression than others do. It’s ALL of it and if someone doesn’t want to do ALL of it then they should build a low compression engine and live with it.