> Are you sure that the Jacobs unit caused the Crane to fail? I only ask
>because I was considering installing a Crane unit along side my Jacobs
>Unit.
>
> I have a Jacobs Pro Street ignition with a Jacobs Ultra Coil and Jacobs
>wires. The Pro Street ignition is a multi-spark design. Jacobs Electronics
>claims that it takes thirty different readings per cylinder within 1.5
>degrees of the crankshaft rotation. Then adjusts the spark accordingly. The
>Ultra coils output is in the 65,000 volt range. So yes, the spark is much
>stronger than my previous Lucas Sport Coil. Jacobs suggests decreasing the
>points gap to roughly half. The car starts easier, warms up much faster and
>runs smoother than before.
> I was considering swapping the points and condenser for a Crane unit, in
>order to make up for the distributor slop of a worn dizzy. After all, if
>the spark timing is improved at the distributor. Then my Jacobs Pro Street
>ignition could spend more time making sure I get a full burn. Instead of
>correcting sloppy sparktiming.
>
> So, If the reports of the Jacobs system causing the Crane unit to fail are
>accurate. Then it looks as if refurbing the dizzy would be the appropriate
>step. Unless anyone can come up with another solution.
>
The only thing I can say that it happened after installation of the Jacob's
unit. It was running ok, but it caused arcing within the dizzy cap.
It does run better, you are right that the gap can be less, I meant to say
the spark plug gap can be wider. The Jacob's tech rep said that I did not
have to worry about the points gap. I did ask about the Allison unit hooked
up with the Jacob's unit, I did not get a satisfactory answer or I did not
under what they said. You might call them and ask. I also had the ultra
coil and the wires, but returned back to the sports coil.
Martin
|