[928uk] Anorak trivia - SE gearbox writing

[Simon Crowe]

I used this when I decoded my own GTS box. 

The 55 relates to the 928 model being a GT, but oddly your SE and my GTS both have this 55, so the interpretation may not be entirely accurate.

1st = Gearbox type, G = manual gearbox
2nd & 3rd = Car model, 28 = 928
4th & 5th = More precise type, 55 = GT
6th = Blank
7th = Differential type
1 = open diff (M219)
2 = ZF 40% LSD (M220)
3 = PSD (M221)
8 = Model year, same as 10th digit in VIN, eg L = 1990

ABCDE = Serial number within year and gearbox type
first normal box in '90 and '91 was 00501
00001...00100 was reserved for testing
00301...00400 was reserved for special boxes

Cheers ,
Simon.

> On 7 Dec 2023, at 20:45, phil rick via 928uk <928uk at lists.928.org.uk> wrote:
> 
> hi Paul
> i would post it on the " 928 club-sport : updates " thread on rennlist,
> Samuel should know.
> cheers
> Phil
> 
>> On Thu, Dec 7, 2023 at 8:27 PM Paul Lacey via 928uk <928uk at lists.928.org.uk>
>> wrote:
>> 
>> Hi,
>> This is probably only of much interest to SE owners and genuine 928 Anoraks
>> :-)
>> Whilst cleaning the underside of my No.2 SE I've come across hand written
>> text on the rear of the gearbox differential cover.
>> Previously I (and others) have found hand written "Clubsport" on the engine
>> sump but this is only visible if engine or cross member are removed.
>> The writing on the gearbox is much more interesting but the reason for this
>> post is for opinions / translation of the third line of writing - since I
>> have zero German (except some swear words).
>> So here is a photo:
>> 
>> 
>> https://drive.google.com/file/d/1KIhZuDlzDXgbdMyKIYnaog_uQqAtWKhi/view?usp=s
>> haring
>> 
>> And this is what I know / see:
>> Where there's a question mark is indicating what I'm unsure of....
>> In brackets is info I've added
>> And especially the third line - could it be the builders name ? Any
>> theories
>> ?
>> 
>> G 28.12     (Mod.88 Manual ROW)
>> Spd ? 40%  (LSD fixed 40%)
>> J-Progxxxx  ?
>> Club-Sport
>> 
>> Then there's the stamping on gearbox rear flange: G28 55 2J 10509
>> Meaning:
>> G28 = gearbox type
>> 5 = five speed
>> 5 = unknown why there's a second 5 ?
>> 2 = ZF LSD M220
>> J = year 1988
>> 10509 = 9th gearbox produced (1st serial number starts 10501)
>> 
>> Note: I immediately checked rear cover of my other SE's gearbox and I think
>> there was something there but it's been obliterated by light corrosion.
>> 
>> Best regards,
>> Paul Lacey
>> 
>>