 2.0L Plenum vacuum port sizes and fitment ? |
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| bdstone914 |
 May 18 2022, 09:55 AM
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bdstone914  Group: Members Posts: 4,911 Joined: 8-November 03 From: Riverside CA Member No.: 1,319  |
I have found that there is are two different 2.0 plenums. One has a 13mm and 6mm (?) port and the other a 13mm 10 mm ports.
I think the split is probably 73-74 and 75-76. But not sure which plenum fits which years. Attached thumbnail(s)  
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| JamesM |
May 18 2022, 01:07 PM
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Advanced Member Group: Members Posts: 2,082 Joined: 6-April 06 From: Kearns, UT Member No.: 5,834 Region Association: Intermountain Region |
think I posted about this a while ago somewhere with pictures comparing the two.
There are other differences as well, most noticeable is the width of the throttle cable support. These changes coincide with changes to the throttle body, airbox, and oil tower vent that occurred for the 75my mainly around the crank case venting/elimination of the PCV. But as stated, the one with the 2 large ports and also the narrow throttle cable support is the earlier version. The later (75+) configuration does not use the rubber stacked vacuum elbow, instead it connects the smaller vacuum line from the decel valve directly to the plenum. QUOTE(bdstone914 @ May 18 2022, 07:55 AM)  I have found that there is are two different 2.0 plenums. One has a 13mm and 6mm (?) port and the other a 13mm 10 mm ports. I think the split is probably 73-74 and 75-76. But not sure which plenum fits which years. |
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Posts in this topic
bdstone914 2.0L Plenum vacuum port sizes and fitment ? May 18 2022, 09:55 AM
emerygt350 The two big ones are the 73. May 18 2022, 10:37 AM
914werke The two big ones are the 73 (& 74).
:agree:... May 18 2022, 01:14 PM |
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