What is Grassroots?
On Tue, 6 Mar 2001, Brinkman, Gerardo V wrote:
> >Have been investigating switching my ignition system over to a breakerless
> >setup for my 74 V8. I'm intending on using a Mallory ignition control. To
> do
> >this it appears I will need to replace my Dual point distributor with
> either
> >a Mallory Magnetic distributor ($320) or a Pertronix device which will
> >require me to lock out the mechanical advance. It costs $110. A big
> >difference! Anybody with practical experience tell me whether or not there
> >is any difference worth the extra $. Oh, I also don't want to lose the
> >vacumn advance in the distributor - anyone know if the Pertronix affects
> >this?
>
> There is a great article in this month's Grassroots, where they take a
> regular
> MGBGT and put it on a dyno. Then they add "external" performance pieces to
> the engine and measure it again.
>
> Reprint from GRM:
> Basleine 56.8hp
> Add Petronix 61.1hp
> Add MSD 62.7hp
> Wires 62.7hp
> Petronix/MSD +30deg advance 64.3hp
> As above with K&N 65.9hp (+16% increase over baseline)
>
> .
>
> this is an ongoing exercise, and in the next issues they are going to make
> more mods.
>
> gerry
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