Death on sudden opening of throttle

[Andrew W. Macfadyen]

The Fiat story reminds me that on Lotus-Ford Twincam engines you can
pick up a lot of torque by alltering the relative timing of the cams to
reduce the overlap.

Walter Petermann wrote:

> Barrett Flowers wrote:
> >
>
> > > When the throttle is mashed at lowish RPMs i.e. <2000RPM
> > > the engine dies for about 1/2 - 1 second, before getting its
> > > act together and then pulling strongly.
> > ....
> > > Q. Whats happening here? Theories anyone?
> >
> > Possibilites:
> > Ignition timing
> > Low port velocity due to runners being too large
> > Valves too large/small
> > Spark plug gap
> > design problems
> >
> > > Q. Do other people here have this problem? Whats the solution?
> >
> > advancing the cam 4 degrees may help.
> >
> I had almost the same problem when I replaced the timing belt
> on an old over head cam Fiat. I was 1 tooth off (don't remember
> which way though..).
> Have you tried less gas on acceleration?
> Do you have a Map or Maf sensor?
> A Map sensor will over-react if placed too close to the
> throttle plate ( corrections..opinions welcome ).
>
>  regards,
>   Walter