This is an interesting thread. I have used lead additive and octane booster
in my 65 Crown. I have not noticed any improvement. Max octane is 91 here.
It has developed a noticeable ping and knock. I don't drive the car much so
it may be carbon build up. I am going to install the recommended Autolites
as noted to see if there is improvement along with other suggestions.
On another note, I have taken the car to have new leaf springs and shocks
installed.The garage is Concord Safety Center, which specializes in
suspension work. If they do a good or bad job I will so post for owners
located in SF bay area (east bay) needing this type of work.
Mark T. Boehme
65 Crown
925-671-3160
mark@xxxxxxxxxxxxxxxx
> -----Original Message-----
> From: dardal@xxxxxxxxxxxxxxx [SMTP:dardal@xxxxxxxxxxxxxxx]
> Sent: Wednesday, March 10, 2004 10:00 AM
> To: mailing-list@xxxxxxxxxxxxxxxx
> Subject: RE: IML: octane booster and price of gas
>
> Quoting "Woolf,Richard" <richard.woolf@xxxxxxxxxxxx>:
>
> > Is all this octane booster really necessary?
>
> I do not believe it is necessary. Both my 68s have 10.1:1 compression
> ratio,
> and they are both happy with 92/93. In fact, both are advanced more than
> the
> stock specs. The taller cams actually help tolerate the lower octane. In
> a
> stock cam car, the peak pressures and temperatures occur at relatively low
> rpm
> when the turbulance is not very high yet. With a bigger cam, the peak
> torque
> (and therefore peak cylinder pressures and temperatures) occur at higher
> rpm,
> where the higher degree of turbulance speeds up flame propagation within
> the
> cycle and reduces the knocking tendencies.
>
> When I first got my LeBaron though, it did suffer from knock even with
> premioum,
> but that was mainly due to carbon build up. After I drove it a bit hard,
> it
> cleared up.
>
> D^2
>
>
>
>
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