tii throttle body lever differences: parts book help

[Conserv]

I’ll start, my VIN 2762757 (1973 model, October 19, 1972) has the later version throttle body, like Jim’s 1973 and 1972. Oh wait, I thought I had the earlier style! ?

 

Whichever mine is, early or late, I’d guess it is original to my car, as my intake runners, accumulator (plenum), and Kugelfischer are appropriately dated to be original to my October 1972 car. Aluminum runners, dated August 1972, E12 head, firewall notch (all of these are “of course” items by the 1973 model year).

 

Regards,

 

Steve

 

 

Edited December 19, 2018 by Conserv

[02Les]

My Blue Parts Manual (dated 15 Oct 1971 but updated into 1972) shows the changeover, related to the part nos in Jim's post as 1 Apr 1972. It shows the changeover from plastic to aluminium runners also as 1 Apr '1972. It does not mention VIN numbers. 

[PaulTWinterton]

 

8 hours ago, jgerock said:

In these two pictures, the lever on the left is one I removed from 72 tii engine 2762332.  The one on the right from my 73 tii 2764081.

Also of note: the hole for the throttle shaft is more centered in the plated part

 

5 hours ago, Einspritz said:

I am not near my orange books, but have this to offer; in 7/74 my bracket has two bolts not one

Both of my spare linkages from 74tii engines have a single bolt clamp.  I only have one 74tii VIN to reference although: 2780601.

[Conserv]

19 minutes ago, 02Les said:

My Blue Parts Manual (dated 15 Oct 1971 but updated into 1972) shows the changeover, related to the part nos in Jim's post as 1 Apr 1972. It shows the changeover from plastic to aluminium runners also as 1 Apr '1972. It does not mention VIN numbers. 

 

April 1, 1972, places us around VIN 2761300 for U.S. cars (VIN 2761315 was manufactured April 4, 1972).

 

VIN 2761944, the initial aluminum runner/E12 head U.S. car, on the other hand, was manufactured in late June 1972 (VIN 2761950 was manufactured June 20, 1972).

 

So we’ve got a 2 1/2-month discrepancy between the Blue Parts Manual and a later parts manual, which is the source of the VIN 2761944 reference.

 

Does the April 1 date relate to Euro cars and VIN 2761944 relate to U.S.-spec cars? I don’t know. We know from Scott, who has a Euro-spec tii, that the Euro-spec and U.S.-spec cars were not always in synch with respect to certain features, such as aluminum intake runners.

 

Thus, there may well be a history of Euro-spec tii improvements that does not coincide entirely with the history of U.S.-spec tii improvements. Or, alternatively, some of these sources are just plain wrong!

 

Since Jim and Paul want to document the U.S. tii history ?, maybe Scott and Ryan would like to document the Euro tii history.... ?

 

Trust me: I will buy the book! 

 

Best regards,

 

Steve

Edited August 6, 2018 by Conserv

[mvliotta]

I think I might be able to fill in a gap here...

 

Pretty sure the TB and shaft are original to my car VIN 2761485

 

Black plastic intake runners with early style throttle body

 

and two bolts on intermediate shaft

 

 

[ColinK]

Pretty much the same results for VIN 2761407 born in April '72.

Black plastic runners, early TB and two bolt shaft. 

Pretty sure the setup was original since I'm the 2nd owner since late '76. 

 

[02Les]

How long before a car was given a VIN & birthdate, were the engines assembled, complete with their respective fuel delivery parts?

Maybe the April '72 date is when the "updated" parts were available, but the completed cars appeared May~June '72?

 

Scan_Doc0007.pdf

Scan_Doc0008.pdf

[Conserv]

4 minutes ago, 02Les said:

How long before a car was given a VIN & birthdate, were the engines assembled, complete with their respective fuel delivery parts?

Maybe the April '72 date is when the "updated" parts were available, but the completed cars appeared May~June '72?

 

Scan_Doc0007.pdf

Scan_Doc0008.pdf

 

I don’t know, Les,

 

Many engines, including my ‘76 and my ‘73, have heads with casting dates the same as the month of the car’s manufacture. They weren’t sitting around in those cases.

 

But, yes, perhaps the new parts became first available in April, but took a few months to be incorporated, maybe while inventories of the old parts were utilized.

 

Best regards,

 

Steve

 

[Conserv]

VIN 2761407, on or very close to April 13, 1972

VIN 2761485, April 25, 1972

 

I have to admit, we’ve seen very few cars that don’t conform to Paul’s plastic-to-aluminum, 121-to-E12 VIN’s, beginning with 2761945 and again at 2762373 for U.S. cars. And I believe that Rob Torres had separately arrived at the same VIN’s for the two changeovers.

 

But I haven’t yet seen changeover VIN’s for the throttle body.

 

Regards,

 

Steve

 

 

Edited August 6, 2018 by Conserv

[jgerock]

1 hour ago, PaulTWinterton said:

 

Also of note: the hole for the throttle shaft is more centered in the plated part

 

Both of my spare linkages from 74tii engines have a single bolt clamp.  I only have one 74tii VIN to reference although: 2780601.

Another weird thing about the throttle body (at least the later ones I have):

the pin hole is offset in the housing, but if you turn it over, the offset can be changed (rotated). Another thing to investigate when swapping parts between cars.

[PaulTWinterton]

1 hour ago, jgerock said:

the pin hole is offset in the housing, but if you turn it over, the offset can be changed (rotated).

 

I've noticed that and thought to myself "That's all I need.  Something else to tweak.".

 

Then I thought it might be adjustable for a different car.  Turbo, CS or E12 maybe.

[jgerock]

I have this new intermediate shaft in my 73 - along with the single bolt coupler (installed in May 2010)

I did notice some differences in the angle of the linkage arm

[Einspritz]

59 minutes ago, jgerock said:

did notice some differences in the angle of the linkage arm

 

I posted the service bulletin either here or on another post for exactly that bend. On some cars evidently, there was the possibility of interference. You can bend your own and grind off the tip.

[irdave]

2761023, February 1972, has the older bits, like mvliotta and colink, with plastic intakes.  The spare engine that came with my car, 2760256 (off the top of my head) had the same older bits as 1023, along with plastic runners.

[Mike G]

2762626 August 72, newer bits (I think), metal intakes. Unsure how much of that is original to the motor.