Starter Tooth Sensor Question

[rr]

I was thinking about the only one that mattered: 168 teeth, evenly
divisable by 8. Used on 11" clutched SBC & BBC. (not the only
one everybody cares about? <g>).

BobR.


Programmer wrote:

> Here's a couple...
>
> GM OE# 1004771 has 153 teeth. No weight (Some 305 Pontiacs)
> GM OE# 25501868 has 131 teeth. (Some 3.8L Buicks)
> Another has 135 teeth on a 4 cyl 1.8L Buick (who cares, right ?)
> 153 teeth on some 92 305 truck chassis, too--so one would have to be sure.
>
> Lyndon.
>
> ----- Original Message -----
> From: "Orin" <orin at diy-efi.org>
> To: <diy_efi at diy-efi.org>
> Sent: Thursday, December 13, 2001 12:13 AM
> Subject: Re: Starter Tooth Sensor Question
>
> > > Kinda surprised nobody's mentioned all the available
> > > tooth counts....148, 160, 162, etc...wouldn't this be
> > > an added nightmare ?
> >
> > Only if it's not a multiple of the number of cylinders/2.
> > IE. you have an integer number of teeth between each firing.
> >
> > Running some numbers on the Audi 5 cyl engines:
> >
> > 135 teeth - so 270 per cycle, 72 between each cyl firing.
> > Resolution is 360/135 degrees - or it would be if they
> > didn't use BOTH edges of the tooth signal - giving a resolution
> > of 360/270 or 1.33 degrees.
> >
> > Orin.
> >
>

----- End of forwarded message from owner-diy_efi at diy-efi.org -----
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