Memcal ESC Filter Numbers, was Re: True definition of Knock

[Ludis Langens]

Dan Plaskett wrote:
> 
> Has anyone determined whether the ESC modules have a numbering system
> similar to the EPROMs?  I have one from a 1988 Cutlass with the number
> 1A8062, one from an 1991 Vette 6 speed with a number 1R9175 and one from a
> 1991 F-body 305 5 speed with no number.

See the below messages from the archives:

Scot Sealander wrote:
> 
> Take a typical memcal, and look at the ESC filter number.
> I have in front of me memcal BBXZ0886, with 1J2302 ESC number.
> 
> The number can be broken down into 3 parts, the rev level, (I think)
> the engine it goes with, and the date code.
> 
> In this example, first character, the number (1) I believe is the
> rev level. Or at least something similar to that. The most common
> number is one, but I have some in the same series that go from
> 1 to 5 as a starting number.  If you have other insight into this,
> I would appreciate it.
> 
> The second character is special, in that in can also be two numbers.
> Such as:
> 
>  A is for 2.8L 60 deg V6
>  B is for 2.0L Turbo Sunbird
>  C is for 2.3L Quad 4
>  G is for 3800 Buick V6
>  H is for 2.0L Turbo Sunbird
>  J is for 3.1L 60 deg V6, both NA and Turbo
>  K is for 3.3L Olds V6
> 
>     *or*
> 
>  05 is for 3.3L V6 Olds
>  09 is for 3.1L V6
>  14 is for 4.3L V6 (Turbo)
>  19 is for 4.3L 90 deg V6
>  35 is for 3100 V6
>  36 is for 3.4L 60 deg DOHC V6
> 
> The numbers tend to be from newer stuff. This is about all the
> engine ID I know, if you have more, add them!
> 
> The last four characters are the date code.
> 
> In this example, 2302, 2 is the least significant digit of the
> year, and 302 is the Julian date.

Peter Gargano wrote:
> 
> I have a U for a 3800 Australian V6 (VR?) - complete code 1U3242

Ludis Langens wrote:
> 
>    E is for Isuzu 1.5L turbo
>    M (looks like M) is for 2.3L Quad 4
>    J is also for 2.8L 60 deg V6 starting in 1989
>   22 is for 2.2L (ie 1995 LN2)


-- 
Ludis Langens                               ludis (at) cruzers (dot) com
Mac, Fiero, & engine controller goodies:  http://www.cruzers.com/~ludis/


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