Gents-I remember on my Pertronix install one year ago the distributor base also
had to be turned quite a bit in order to get the correct timing. I gave up and
put the old system back in and the distributor base was back to where it was
originally. I hope to put it back in after I receive the neg ground unit so I am
saving all of these messages for future reference. Brent
Bob Hamilton wrote:
> Jarrid,
>
> I can't agree with you more here. Before we get into vacuum and
> mechanical advance issues though, I think we should get back to the basic
> problem: this fellow can't get his engine to fire at all and had to turn
> the distributor 180:, which is not right.
>
> I am suggesting he try to do static timing with the engine at TDC
> #1 and the turn the distributor in the clamp until he gets a spark, with
> the lead off #1 and the end situated close to the head or block somewhere.
> He should not have to turn it so far as to get the alignment of the rotor
> with the #1 post so far off it has to make a big jump to the terminal. Most
> rotors have a pretty wide surface area facing the post to allow for some
> misalignment and still be directly in line.
>
> I'm sure this kit has been installed on more than a few Alpines
> and is a proven successful installation by many other owners so there is
> some very basic installation problem occurring here. Once he gets it
> running, he'll never go back to points.
>
> Bob
>
> At 11:37 AM 11/29/2000 -0800, Jarrid Gross wrote:
> >Bob,
> >
> >Best to re-read my instructions...
> >
> >In a nutshell, it says that the phasing of the ignition
> >event with respect to the phasing of the rotor is important.
> >
> >I dissagree that arbitrarily rotating the distributor to make
> >the ignition fire at the correct angle is the right way to adjust
> >the timing.
> >You just cant assume that rotating the distrubtor to get the right
> >ignition timing will truly fix all the evils.
> >
> >As I said before, and many times before that, getting the ignition
> >timing right is not enough, the timing must be right AND it must
> >occur when the rotor is pointing at the correct cap terminal.
> >In addition to that, it must be phased across the entire advance
> >range for the mechanical and vacuum advance.
> >
> >
> >The advance hook on the 25D lucas rotor only provides for around 20 degrees
> >of mechanical advance, so if you rotate the distributor 22.5 degrees
> >to compensate for the sensor not being mounted in phase with the
> >rotor, then the spark will occur when the rotor is NOT pointing
> >at the proper plug wire.
> >This results in weak spark at that plug, or misfire to the closest
> >cap terminal.
> >
> >I have seen a great many aftermarket ignitions that suffer from
> >this problem pertronics is just one of them.
> >
> >
> >Jarrid Gross
>
> =========================================================
> Robert (Bob) A.C. Hamilton, Waverley, Nova Scotia, Canada
> The Man of Many Sunbeams - Alpine, Drophead and Saloon 1953-1954
> [Stable mates - 1973 Midget and 1968 M-B 280SE]
> Home Page: www.navnet.net/~hamilton
> BATANS Home Page: www.batans.ca
> E-Mail: hamilton@accesswave.ca
> =========================================================
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