When you overwind you float the valves causing the pistons to hit valves.
Can happen on any piston engine!
<jon@dakota-truck.net> wrote in message
news:bgf0kp$1bn$1@bent.twistedbits.net...
>
> jon@dakota-truck.net wrote:
> : I don't know if this has any bearing on the discussion or not, but
> : when I accidentally shifted my 318 from 4th to 3rd at about 5,000 rpms
> : once (that's the sort of thing you only do ONCE) ;-) I bent three
> : valves. I assumed that the 318 was an interference engine because of
> : that, but I may be wrong.
>
>
> Oops - I meant from 3rd to 2nd (was trying for 4th and missed) (no
> need to try to shift into 5th at the dragstrip; 5,000 in 4th would be
> flyin') :-)
>
>
> --
>
> -Jon-
>
> .---- Jon Steiger ------ jon@dakota-truck.net or
jon@jonsteiger.com ------.
> | I'm the: AOPA, DoD, EAA, NMA, NRA, SPA, USUA. Rec & UL Pilot - SEL
|
> | 70 Cuda, 90 Dak 'vert, 92 Ram 4x4, 96 Dak, 96 Intruder 1400, 96 FireFly
|
> `------------------------------------------
http://www.jonsteiger.com ----'
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