> Graham Motzing wrote:
> -------------------------------------------------------
> Ah man I just wrote this on that thread about the eurokit, then I was
> like 'nobody wants to hear an old man ranting about low compression' so
> I didn't post it.
>
> Yeah especially on big over square setups, I don't really have a good
> reason to explain it but I'll think about it. It seems like on the
> hobbit and v1 especially, with the 47+ mm kits, letting them get through
> the lower rpm with lower load and bmep.
>
> It's always better for the combustion process to get an earlier spark
> event and have everything fully burn, I think the short stroke makes
> things happen faster, and it takes longer to propagate the flame front
> across a bigger bore, so lower compression kinda softens things up.
> Makes it so it's not so violent when it does hit, so instead of putting
> all that extra heat into the piston and head and detonation, it's
> pushing the piston down. You can kinda feel it like smoothly building
> pressure on each hit rather than slamming hard, maybe? Maybe I'm nuts? I
> don't know.
>
> Big dome, tight narrow squish, like less than 40%, push the timing as
> hard as you can and pound fuel to the fucker, sure to blast.
Old men don't grow old by being stupid, don't be afraid to share the smarts, know many will not listen, but if they make it to where you are they MAY remember what you said. :)