>You need to discriminate between noncounterweighted HO engines, like VW,
>and counterweighted HO engines, like Porsche.  For the VW engines, 4000rpm,
>or right around 70 for a lot of our buses, is where my ears are calibrated
>if I'm not watching the tach.
>
>The Porsche engine doesn't give the sense that it is straining until far
>above that, and power continues to build until 5500 or more, or at least
>it feels like it does.
>
>Any listmembers able to comment, before-and-after-wise, on a VW engine that
>got an aftermarket counterweighted crank?
>B.
>Wm Kennedy
>kennedy@admin.njit.edu
>

Able?  Well I guess so.  Qualified?  Doubtful.  For the VW valve springs,
I'd also say 4000 RPM.  If you have the counter-weighted crank and stronger
valve springs, then you can move the RPM limit up.  I still try not to
exceed 5000 or 5500 even with a CW crank and dual springs.

Eug,
'71