Type 901/xx Engine Build #'s

[davep]

BTW isn't off interest to note whether they are Mag or Alu around the change, for instance my 328052 is an Alu.

The Al to Mg change occured near build #12000

[preS]

The Al to Mg change occured near build #12000

I am aware off that, but wouldn't it be interesting to get the exact number? So when people provide you w/ their numbers and their build number is between 11800-12200 they tell you whether it's an Alu or Mag case since the type number doesn't tell?

Richard

[davep]

Yes, this is certainly part of the research. These are the engine #'s we have to find build #'s for to fully understand this transition:

Type # ___AL___ ___MG___
901/02 4080681 4080682
901/03 2080640 2080641
901/06 3080371 3080372
901/07 3180182 3180183
901/08 4180099 4180100
901/13 2180107 2180108
901/14 3280631 3280632
901/17 3380148 3380149
901/30 3880004 3880005

Another number worth looking for the the numbers on the case halves showing that the two are a matched pair. It would be interesting to see how high these numbers get, and their relative sequence to the build #'s. Anyone have a photo to illustrate these numbers?

[Cliff]

Davep PM sent

[EARLY911ZOO]

early one..... 901467 901/01 1367

[Cliff]

case halves ID # 767 for 900685 901/01 585

[gms]

al
3280442
901/14
11233


al - one of last 150 aluminum engines
3280620
901/14
12050

mg
6391343
901/10
22398

[Bowzer]

any info on 6301962 , please ?

[davep]

any info on 6301962 , please ?

1970 Type 911/02 911S 2.2 late in production