Re: 4kq surging improved

["Ken Keith" <Ken.Keith@SpecialDevices.com>]

Interesting. I wonder if there is any kind of performance upgrade for my 
distributor.  I would imagine something that could change the advance 
curve would help out.  If it could advance the timing at low rpms, then 
back it off (more than stock?) as the revs go up.

Ken

Todd Young <tyoung@wamnet.com> wrote:
>
> I would say that 99% of the cars out there with distributors
> have both centrifugal and vacuum advance, although
> sometimes the centrifugal weights are slightly hidden
> in the lower portion of the distributor. Any good hot-rod
> magazine will at some time or another address the fact
> that factory springs for the centrifugal advance weights
> either wear out or aren't at the proper spec in the first
> place, causing an improper timing advance. There are
> quite a few companies, not the least of which is ACCEL,
> who manufacture specific application springs and weights
> for centrifugal advance in a distributor. I'm not sure if
> anything is currently made for Audis besides OEM.
> 
> Ken Keith wrote:
> 
> > I thought cars had either centrifugal or vacuum advance.  I know my Audis
> > have vacuum.  Do they have centrifugal as well?