I've always been curious how the later evo stuff stacked up.
like the "beehive" design and the incrediablly
light retainer that option brings to the table.
For old guys like me that don;t "zing" their motor north of 7500 much, but run in the 5500-7000 range, (a lot
), they seem like they'd be just the ticket.
Running more spring than you need just stresses the overlovin dogshit out of the valvetrain, and nothing good comes from that.
With the light retainer, I would *think* that the evo spring could have a lower rate and yet still control the valve action as well as (or even better) than a heavier rate spring/heavier retainer combo
What's your take on that?
Got some other questions for ya while you've got the rimac out
What's your take on mileage vs. rpm seen by an engine as it relates to spring "sag"
... Do the springs drop off dramatcically from the get go?
(as in, as soon as they enter service they start to lose some "boing", and it just goes downhill from there)
... Do they sag a scosche and then take a "set"?
(as in, do they drop a certain amount and then plataue at that number)
... does the temperature reached by the engine (overheats) affect the spring tension/sag as much as higher cycle rate a spring "sees" at max rpm's?
Thanks for posting here, I think a lot of us will learn something from your experiences.