| modok |
Fri Mar 25, 2022 4:47 pm |
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The higher the rocker ratio, the less the lifter mass matters. That's more or or less what makes it a good idea.
I don't really have a bias one way or the other, low ratio VS high, but
I see the porsche lifters as designed to suit low ratio rockers.
Just on a fundamental level and common sense.
Low ratio rockers need a light lifter with a big head,
High ratio rockers will need a stiff lifter... which can be heavier, and the large head is not really needed.
Having a big head COULD BE useful in any case, but the cam is only as wide as it is, although it could be wider, but it isn't, so a head bigger than you need has no purpose other than slowing you down. |
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| UK Luke 72 |
Sat Mar 26, 2022 10:01 am |
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DerrickfromNC1 wrote: UK Luke 72 wrote: I ran singles on my 86b. Scat lifters, Smith bros pushrods, AA 1.4:1 rockers, 42x37 stainless valves and chromoly retainers. Nothing exotic at all. Installed @1.50" 111lbs @0.550” 263lbs
If memory serves me right I added an inner when I switched to an FK10 though.
Would that single be the W650 outer?
Stateside tuning singles. In the UK. |
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