Editing Z31/hotairfromac php (section)

=== Parts Needed ===

* Dorman OE Solutions 604-922 — Vacuum Style Air Actuator
* Dorman 604-933 — Vacuum Style Air Door Actuator
* Dorman 604-934 — Vacuum Style Air Door Actuator
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[Full Actuator Mounting Kit (3d Printed)](
https://www.paypal.com/instantcommerce/checkout/YZ8CYFUEYN7GU?fbclid=IwY2xjawL3UNFleHRuA2FlbQIxMABicmlkETFFOVp4dm9Yb0hycjVwY0IyAR7r7CpfocT8rSkMVSrdLmkrka1-m30PuD6JQumS7N47xK6oAx0pByPrQNy2XQ_aem_yLR3qDqiK2_WAE05vr3ibA
)

==== Intake Actuator ====

Actuator: Dorman 604-934

3D Printed Mount:
[https://dev.z31library.com/xenonzcar_archive/2025siteimages/actuator%20mount%201.stl Dorman 604-934 Actuator Mount]

This is the easiest to use and mount—no need to modify the linkage. Simply remove the e-clip from the original actuator and swap it over. The Dorman 604-934 is a 2-stage actuator just like the original. The angle of the door may differ slightly but it should function properly.

https://dev.z31library.com/xenonzcar_archive/2025siteimages/Dorman604-934.jpg

==== Power Servo 1 ====

Actuator: Dorman 604-922

3D Printed Mount:
[https://dev.z31library.com/xenonzcar_archive/2025siteimages/actuator%20mount%202.stl Dorman 604-922 Actuator Mount]

For installation, saw off the last 2 inches of the actuator, then put a right angle in the bracket and use the existing hole to butt against the hardware. Use the actuator's mounting slots to attach the 3D printed mount.

https://dev.z31library.com/xenonzcar_archive/2025siteimages/Dorman604-922-1CUT.jpg

https://dev.z31library.com/xenonzcar_archive/2025siteimages/Dorman604-922-bracket.jpg

==== Power Servo 2 ====

Actuator: Dorman 604-933

3D Printed Mount:
[https://dev.z31library.com/xenonzcar_archive/2025siteimages/actuator%20mount%203.stl Dorman 604-933 Actuator Mount]

https://dev.z31library.com/xenonzcar_archive/2025siteimages/Dorman604-933Mods.png

For this actuator, trim off the plastic mounting features and saw off the end of the linkage. The Dorman 604-933 has more travel than the OEM actuator, so the first half-inch of travel does nothing; the next inch actuates the assembly. Refer to the images below for modifications and mounting.