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That’s a Bosch replacement JFUD 4 dizzy for a later USA E12 head 2002tii.

 

The original one would likely be 0 231 180 013 for a late USA (E12 head) tii, as the 8/73 - 7/75 application.

 

Tom-too

Edited by visionaut
Corrected (see explanation below)
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37 minutes ago, visionaut said:

That’s a Bosch replacement JFUD 4 dizzy for a later USA E12 head 2002tii. Similar to the prior 0 231 180 113 late  USA tii replacement dizzy.

 

The original one would likely be 0 231 188 018 for a late USA tii.

 

Tom-too


By “late USA tii”, Tom, I’m guessing you mean 1974 model U.S.-spec tii’s (VIN’s 2780001 through 2782927), those with a vacuum retard distributor?

 

Thanks and best regards,

 

Steve

 

 

 

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1 hour ago, visionaut said:

That’s a Bosch replacement JFUD 4 dizzy for a later USA E12 head 2002tii. Similar to the prior 0 231 180 113 late  USA tii replacement dizzy.

 

The original one would likely be 0 231 188 018 for a late USA tii.

 

Tom-too

After further review (and a quick chat with Master Tinkerer) --  I'll amend my post above to correct the Bosch id of the stock late (E12 head) USA tii to be the dizzy I attempted to mention second above: 0 231 180 013. Listed as the 8/73 - 7/75 application.

 

That 188 018 cited dizzy is one I've had Qs about before... so I'll remove it.

 

Edited by visionaut
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21 minutes ago, Conserv said:


By “late USA tii”, Tom, I’m guessing you mean 1974 model U.S.-spec tii’s (beginning with VIN 2780001), those with a vacuum retard distributor?

 

Thanks and best regards,

 

Steve

 

 

 

I dunno Steve, but I don't think so.  My Bosch Classic data only shows that 180 013 dizzy for the whole application span that I cited 8/73-7/75.

 

I know from out priors about the added-retard tii dizzy variant (and there might be a CA-only too?).  I don't know it's id or why it's not listed in the Bosch data. (And I bet you know the id - so plz fess up, and I'll add it to my db. Thx bud.)

 

Tom-too

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1 hour ago, R.I.P.B.M.W. said:

(archived by Mintgrun)

 

I'm not sure what that means... but I do remember your post and just dug it up.

Thank you again for sharing it!

 

(edit- archived refers to when I said I'd bookmark it, within the following thread.  I get it now).

 

https://www.bmw2002faq.com/forums/topic/268581-correct-set-of-points-for-74-2002/?do=findComment&comment=1442778

 

Here is a copy of your post/catalog from that link --

 

Here is what my catalog says for 2002's. Hope this gives you the numbers that you are looking for.

1.jpg

2.jpg

3.jpg

4.jpg

5.jpg

6.jpg

7.jpg

 

Tom

Edited by '76mintgrün'02
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22 hours ago, visionaut said:

I dunno Steve, but I don't think so.  My Bosch Classic data only shows that 180 013 dizzy for the whole application span that I cited 8/73-7/75.

 

I know from out priors about the added-retard tii dizzy variant (and there might be a CA-only too?).  I don't know it's id or why it's not listed in the Bosch data. (And I bet you know the id - so plz fess up, and I'll add it to my db. Thx bud.)

 

Tom-too


Thanks, Tom,

 

The distributor # 0 231 180 013 is what I know as the factory-installed vacuum-retard distributor for U.S.-spec 1974 tii’s (VIN’s 2780001 through 2782927). Bosch’s end-date of 7/75 is just plain wrong for U.S.-spec tii’s. The last U.S.-spec tii’s rolled off the assembly line in December 1974, just before the January 1, 1975 deadline for new emissions requirements, emissions regulations BMW chose to not meet on a model near the end of its production run.

 

But just as the factory-installed mechanical-advance-only distributor for U.S.-spec 1972-73 tii’s (VIN’s 2760001 through 2764235), distributor # 0 231 151 008, was superseded by a factory replacement, distributor # 0 231 188 002, my real question was:

 

Is # 0 231 168 025 the factory replacement for # 0 231 180 013? My understanding is that the original ‘74 tii distributor had a mechanical advance curve virtually identical to the ‘72-‘73 tii distributor, but with the vacuum retard feature added to reduce emissions (upon deceleration).

 

Thanks and best regards,

 

Steve

 

 

 

 

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Steve,

 

Great to know that the 0 231 180 013 WAS the vacuum-retard dizzy. The reason for my confusion is a statement in Taylor's Reference stating the USA 74 2002tii used the same dizzy as the carbed 74 2002... (which would likely be the 0 231 180 008, with Replacement 0 231 168 024).

 

My Bosch Classic archives data shows 180 013 was used on all USA E12 head 2002tii  built 8/73 - 7/75, but that's a bit odd. I would mean that the late 73s, and the added late 74s (USA production 9/74-12/74) 2002tii ALSO used that dizzy.

 

Here's what I have for 2002tii Dizzy Usage Sequences:

 

USA 2002tii

121 head:

0 231 129 037 [8/71 - 1/72], a JFR 4,

then 0 231 151 008 [2/72 - 7/73], a JFD 4,

then Replacement 0 231 188 002, a JFD 4.

 

E12 head:

0 231 180 013 [8/73-7/75], a JFUD 4,

then Replacement 0 231 168 025, a JFUD 4.

 

World 2002tii

121 head:

0 231 129 037 [5/71 - 9/71], a JFR 4,

then 0 231 151 008 [10/71 - 6/73], a JFD 4,

then Replacement 0 231 188 002, a JFD 4.


E12 Head:

0 231 151 009 [7/73-7/75], a JFD 4,

then Replacement 0 231 188 002, a JFD 4.

 

--

 

As you can see, 0 231 188 002 is the last Replacement tii dizzy for BOTH 121 and E12 head types Worldwide, but not for USA.  Likely because it's a full-mechanical dizzy, and doesn't have the needed vacuum takeoff like on the 180 013, and it's 168 025 replacement. The 188 002 dizzy is also notably the last Replacement dizzy for all the ti 02 (1600/2002).  It makes sense why it's very common as time went by. It's also the model I use in my E12 head running DCOEs...

 

0 231 129 026 [67],  0 231 129 033 [1/68-6/70], 0 231 151 003 [70 USA] and 0 231 129 037 [7/70-4/71], all JFR4, were originally used on the ti, and the latter was very briefly used on the first tiis produced in 5/71.  The ti's dizzy replacement became the 0 231 151 008 used on the tii. These dizzys sometimes show up under both tii and ti listings, though they're predominantly ti.

 

Hope this info's interesting.  It's the best I've been able to piece together to-date...

 

Take care,

Tom-too

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This is great, Tom! Very nice. Maybe you should make it an article, so we can find it easily...


And this answers my question: yes, the # 0 231 168 025 was the factory-sanctioned replacement for the factory-installed # 0 231 180 013.

 

Thank you.

 

Additional Notes

The last U.S. 1973 tii’s were manufactured in July 1973. As a matter of fact, all round taillight production ended in July 1973. This is largely because the model years generally run from September to July; they are not based on calendar years. August is usually reserved for holidays and switching over tooling and production to the next year’s model. So when they say tii’s “from 8/73”, they are referring solely to square taillight cars, 1974 models for U.S. purposes, even though the factory’s terminology referred to revised models by the year in which they were introduced. Thus, a 1974 U.S.-spec tii would generally be referred to as a Modell 73 by the factory. The fifteen-month production of the U.S.-spec 1974 model tii (September 1973 through December 1974) was un-changed over the period. I’m confident that all 1974 U.S. tii’s received the same distributor, # 0 231 180 013.


The linkage of distributor to head type is slightly mis-leading, as the first use of the E12 head on U.S.-spec tii’s was June 1972. After reverting temporarily to the 121 head, the E12 head returned in early August 1972 for the last 1972 models. All U.S.-spec 1973 model tii’s (September 1972 through July 1973) used the same E12 head as the 1974 models. But the 1973 models received the # 0 231 151 008 distributor (solely mechanical advance) while the 1974 models received the # 0 231 180 013 distributor (with vacuum retard).

 

Best regards,

 

Steve

 

 

 

 

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