transmission identification

[Jaars]

I have 8 trannies, but don't remember what came from what series S2, S4 or S5.

All have casings with number like for example: 18 11 63 10DA15778 and 1980837.

First looks like a date code from 60 to 69 and on has 86(!). Then a number with 1,2,3,4,9,or 10DA, and then a (part?)number like 191- or 198xxx. No number matches my parts books. How do I recognize a S2?
Robert

 

[mikephillips]

OK, first thing to do is set aside any where reverse is to the right and down as those will be the fully syncro boxes from the later cars. The first part of the number you have is indeed a date, for the case casting using day month year, anything between about August 1960 to late February 1962 should be from a series 2, assuming that they're cast up to about 4 weeks before actual use. Later would be series 3 and early 4, earlier would be a 1. Only real difference though between them is the gear ratios as all the early ones are reverse to the left and down so would look the same in the car.

 

[RootesRacer]

I have 8 trannies, but don't remember what came from what series S2, S4 or S5.

All have casings with number like for example: 18 11 63 10DA15778 and 1980837.

First looks like a date code from 60 to 69 and on has 86(!). Then a number with 1,2,3,4,9,or 10DA, and then a (part?)number like 191- or 198xxx. No number matches my parts books. How do I recognize a S2?
Robert

I have a trans that has nearly the same casting date. I was hoping it would be a series III close ratio box but manually turning and counting the input to output ratio suggests its an early series IV.

An SII and early SIV are more or less the same. The SIII would use the same case but different gears for close ratio. All 3 will likely have the same case part# but possibly different casting dates.


Early/non sync trannies are easily distinguishable from late ones as the tail housing rear section is smooth and thinner versus thick and ribbed. The cases can be IDs easily too as the early ones have a bolt in the side of the case that doesnt exist on the later allsyncs.