 FI throttle body identification, I'm guessing... anyone able to identify/clarify ? |
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| brant |
 Nov 13 2019, 10:44 AM
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#1
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914 Wizard  Group: Members Posts: 11,622 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains 
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I dug out my core throttle bodies and see that there were significant differences on different years.
the 1.7 is a safe bet the Ljet is an easy one (but I don't know which year of Ljet?) the 1975 marked from "Jason" is what was on the 1975 motor I purchased as a running complete motor and likely is correct does anyone know which are 73 and which are 74 or even early 75 styles? Attached thumbnail(s)   
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| 914Sixer |
Nov 13 2019, 07:37 PM
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#2
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914 Guru Group: Members Posts: 8,877 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region
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They all should have VW part numbers on them. Cross reference them with the PET. If there is no number in PET, post them and I will look them up in a NOS 1980 Parts Book.
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| JeffBowlsby |
Nov 13 2019, 10:00 PM
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#3
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914 Wiring Harnesses Group: Members Posts: 8,492 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None
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On the 2.0L TB's:
1973 - dual ports 1974-76 - single port |
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| porschetub |
Nov 13 2019, 10:59 PM
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#4
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Advanced Member Group: Members Posts: 4,697 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
Appears L-jet tb's varied, some had ports for advance/retard,and some only had retard and a desal valve, please correct me, (IMG:style_emoticons/default/beer.gif) .
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| brant |
Nov 14 2019, 12:21 PM
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#5
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914 Wizard Group: Members Posts: 11,622 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains
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QUOTE(porschetub @ Nov 13 2019, 10:59 PM)  Appears L-jet tb's varied, some had ports for advance/retard,and some only had retard and a desal valve, please correct me, (IMG:style_emoticons/default/beer.gif) . I fully assume you are correct and the TB could vary on the Ljet I know there were at least 2 different Ljet distributors and that they had slightly different advance.. One is a better match for use with carbs than the other I don't know which year is which |
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| brant |
Nov 14 2019, 01:04 PM
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#6
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914 Wizard Group: Members Posts: 11,622 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains
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QUOTE(JeffBowlsby @ Nov 13 2019, 10:00 PM) On the 2.0L TB's: 1973 - dual ports 1974-76 - single port that makes sense thank you I know the vacuum pot on the distributor had no connection in 74 model year so that coincides with the TB port change... one weird thing in my car... the motor was a known entity from a fellow member. possibly the TB was changed prior to my ownership? but it does have 2 ports...? I will pull part numbers and dig further crazy that the factory changed the venting almost annually brant |
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| TheCabinetmaker |
Nov 14 2019, 03:16 PM
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#7
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I drive my car everyday Group: Members Posts: 8,300 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
Throttle return assist springs on late cars, only.
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| brant |
Nov 18 2019, 10:26 AM
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#8
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914 Wizard Group: Members Posts: 11,622 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains
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QUOTE(914Sixer @ Nov 13 2019, 07:37 PM) They all should have VW part numbers on them. Cross reference them with the PET. If there is no number in PET, post them and I will look them up in a NOS 1980 Parts Book. I finally pulled off the part numbers but was surprised by what I found All of the 2.0 Djet throttle bodies had the same part numbers despite differences in vacuum ports and return springs 039.133.067 The 1.7 TB has a vw part number 022.133.067 And the Ljet has 022.133.067A |
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| sixnotfour |
Nov 18 2019, 10:41 AM
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#9
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914 Wizard Group: Members Posts: 10,423 Joined: 12-September 04 From: Life Elevated..planet UT. Member No.: 2,744 Region Association: Rocky Mountains
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why do you have so many T- 4-sale TBs ?? (IMG:style_emoticons/default/beer.gif)
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| brant |
Nov 18 2019, 03:20 PM
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#10
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914 Wizard Group: Members Posts: 11,622 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains
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QUOTE(sixnotfour @ Nov 18 2019, 10:41 AM) I'm a good hoarder…. ? honestly back when we raced a T4, we went through a lot of motors and a lot of parts... some of these were spares I bought... (hoarder problem again) my old black car has had about 18 different motors in its engine pay over my ownership of it. (IMG:style_emoticons/default/beer3.gif) |
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