Jump to content
  • When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

1970 bmw 1602 differential gear ratio ?


Recommended Posts

You can also jack up the rear, put it in neutral, mark the tire and the drive shaft  and count how many times the drive shaft turns to get the tire to spin one time, over 4, most likely the standard 4.11 differential long nose for the BMW 1600 as pictured below.

 

Mark92131

 

 

IMG_0819.JPG

1970 BMW 1600 (Nevada)

 

 

Link to comment
Share on other sites

22 minutes ago, Mark92131 said:

You can also jack up the rear, put it in neutral, mark the tire and the drive shaft  and count how many times the drive shaft turns to get the tire to spin one time, over 4, most likely the standard 4.11 differential long nose for the BMW 1600 as pictured below.

 

Mark92131

 

 

IMG_0819.JPG

No, that is the earlier 1600 differential 

(long neck)

im referring to a 1970 short neck in a 1602

i can’t exam because I’m buying from remote 

Link to comment
Share on other sites

2 hours ago, rockyford77 said:


I had a 1969 1602 and it had a long nose.


Sent from my iPhone using Tapatalk

 

My records show that VIN 1664761 (manufactured late January 1969) was the first U.S. 2002 with a short-neck differential. Thus, early ‘69 U.S. 2002’s (September 1968 to late January 1969) had long-necks while later ‘69’s (late January through August 1969) had short necks.

 

Although I suspect that 1600-2’s (and Euro-spec 2002’s) switched over at approximately the same time, I have no VIN numbers to confirm that.

 

Regards,

 

Steve

 

1976 2002 Polaris, 2742541 (original owner)

1973 2002tii Inka, 2762757 (not-the-original owner)

Link to comment
Share on other sites

2 hours ago, rockyford77 said:

I had a 1969 1602 and it had a long nose.

Early '69 US market cars, both 1600s and 2002s, had long neck differentials, up to VIN 1567846 on 1600s and 1664741 on 2002s.  The change was made around 1 Jan '69 as part of a significant series of changes to meet new Federal requirements that took effect on 1 Jan '69.  While the new standards didn't mandate short neck differentials, I guess the factory just decided to change the diffs, rear axles and subframes at the same time.

 

mike

  • Like 1

'69 Nevada sunroof-Wolfgang-bought new
'73 Sahara sunroof-Ludwig-since '78
'91 Brillantrot 318is sunroof-Georg Friederich 
Fiat Topolini (Benito & Luigi), Renault 4CVs (Anatole, Lucky Pierre, Brigette) & Kermit, the Bugeye Sprite

Link to comment
Share on other sites

9 hours ago, mike said:

Early '69 US market cars, both 1600s and 2002s, had long neck differentials, up to VIN 1567846 on 1600s and 1664741 on 2002s.  The change was made around 1 Jan '69 as part of a significant series of changes to meet new Federal requirements that took effect on 1 Jan '69.  While the new standards didn't mandate short neck differentials, I guess the factory just decided to change the diffs, rear axles and subframes at the same time.

 

mike

 

Thanks, Mike,

 

Your VIN for the first U.S.-spec 1600-2 with a short-neck differential completes my records; and I had VIN 1664761 (erroneously?) for the first U.S.-spec 2002 with a short-neck differential.

 

The records I have from Archives, sporadic as they are, place VIN’s 1567846 and 1664741 late in January, or possibly very early in February 1969. Here’s what my records show:

 

1600-2’s:

VIN 1567531 (first U.S.-spec 1600-2 manufactured in 1969).

VIN 1567763 (83 cars before the first short-neck), January 28, 1969.

VIN 1567846 (first 1600-2 with a short-neck), ? , 1969.

 

2002’s:

VIN 1664492 (first U.S.-spec 2002 manufactured in 1969).

VIN 1664565 (176 cars before the first short-neck), January 10, 1969.

VIN 1664741 (first 2002 with a short-neck), ? , 1969.

VIN 1664819 (78 cars after the first 2002 with a short-neck), February 5, 1969.

 

One of these days, when I’m not so over-extended with favors from BMW Group Archives, I’ll simply ask them for the precise manufacturing dates for VIN’s 1567846 and 1664741. Unless another forum member would like to ask.... ? (info.grouparchiv@bmwgroup.com)

 

Best regards,

 

Steve

 

Edited by Conserv

1976 2002 Polaris, 2742541 (original owner)

1973 2002tii Inka, 2762757 (not-the-original owner)

Link to comment
Share on other sites

13 hours ago, Conserv said:

2002’s:

VIN 1664492 (first U.S.-spec 2002 manufactured in 1969).

VIN 1664565 (176 cars before the first short-neck), January 10, 1969.

VIN 1664741 (first 2002 with a short-neck), ? , 1969.

VIN 1664819 (78 cars after the first 2002 with a short-neck), February 5, 1969

And one more for your list:  Wolfgang is 1664801, manufactured on 4 Feb 1969.  

 

According to the parts book, 1664751 was the first US spec '02 with a short neck (my posting above was 10 VINs off).  I have a friend in California who owns 1664730, one of the last long neck diff cars, and has all those other little "first series '69" features (early style trunk lid torsion bars with the little plastic caps, two speed heater blower etc).

 

Interesting to see that the factory continued to make "first series" cars after 1 January, so apparently there were no Federally required changes involved...either that or they fudged things...

 

Doncha love all this minutia?

 

mike 

  • Like 1

'69 Nevada sunroof-Wolfgang-bought new
'73 Sahara sunroof-Ludwig-since '78
'91 Brillantrot 318is sunroof-Georg Friederich 
Fiat Topolini (Benito & Luigi), Renault 4CVs (Anatole, Lucky Pierre, Brigette) & Kermit, the Bugeye Sprite

Link to comment
Share on other sites

1 hour ago, mike said:

 

...Doncha love all this minutia?

 

mike 

 

I do, Mike!

 

Thanks for all this great additional info. Whenever I think I see a clear rationale behind the ‘02’s “refinements,” however, actual facts throw a wrench in the works.... ?

 

Best regards,

 

Steve

 

1976 2002 Polaris, 2742541 (original owner)

1973 2002tii Inka, 2762757 (not-the-original owner)

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • BMW Neue Klasse - a birth of a Sports Sedan

    BMW Neue Klasse - a birth of a Sports Sedan

    Unveiling of the Neue Klasse Unveiled in 1961, BMW 1500 sedan was a revolutionary concept at the outset of the '60s. No tail fins or chrome fountains. Instead, what you got was understated and elegant, in a modern sense, exciting to drive as nearly any sports car, and yet still comfortable for four.   The elegant little sedan was an instant sensation. In the 1500, BMW not only found the long-term solution to its dire business straits but, more importantly, created an entirely new
    History of the BMW 2002 and the 02 Series

    History of the BMW 2002 and the 02 Series

    In 1966, BMW was practically unknown in the US unless you were a touring motorcycle enthusiast or had seen an Isetta given away on a quiz show.  BMW’s sales in the US that year were just 1253 cars.  Then BMW 1600-2 came to America’s shores, tripling US sales to 4564 the following year, boosted by favorable articles in the Buff Books. Car and Driver called it “the best $2500 sedan anywhere.”  Road & Track’s road test was equally enthusiastic.  Then, BMW took a cue from American manufacturers,
    The BMW 2002 Production Run

    The BMW 2002 Production Run

    BMW 02 series are like the original Volkswagen Beetles in one way (besides both being German classic cars)—throughout their long production, they all essentially look alike—at least to the uninitiated:  small, boxy, rear-wheel drive, two-door sedan.  Aficionados know better.   Not only were there three other body styles—none, unfortunately, exported to the US—but there were some significant visual and mechanical changes over their eleven-year production run.   I’ve extracted t
  • Upcoming Events

  • Supporting Vendors

×
×
  • Create New...