[Spridgets] Interference

[Weslake1330]

I always thought it depended on the cam and rockers whether or not the
valves would hit the piston if the belt broke on an A-series.  A long time
ago my dyno guy said for my engine if the belt broke the valves would
definitely hit the piston.  No, I don't have the full valve lift figure
handy.

On Thu, 5 May 2022 at 20:16, Rick Fisk via Spridgets <
spridgets at autox.team.net> wrote:

> Forgot to add both valves were bent as well.
>
> > On May 5, 2022, at 3:01 PM, Rick Fisk <refisk at chartermi.net> wrote:
> >
> > Yes, the 1275 is an interference engine.  In this photo you can see
> where the valves beat the crap out of the top of the piston.  The piston
> broke in half at the wrist pin and the top half of the piston stayed at the
> top of the bore.
> >
> >
> >
> >> On May 5, 2022, at 2:41 PM, Michael MacLean via Spridgets <
> spridgets at autox.team.net> wrote:
> >>
> >> 
> >> When I rebuilt my 1275 for the Bugeye I converted to belt drive for
> timing.  Keeps the timing spot on.  It occurs to me that like other cars
> the timing belt has a limited life and must be changed.  To be honest the
> instructions did not say when this should occur as far as I can remember.
> To be fair, the rebuilt engine has only a little over 3K miles on it, but
> the question arises about valve interference if the belt breaks.  To my
> knowledge, I don't think so, but I have been proven wrong before.  Anyone
> know if a 1275 would be an interference engine if the belt broke?
> >> Mike MacLean
> >> ------------------------
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