Turbo Actuator Adjustment

[wildriceracing]

I recently had a 54 trim PTE turbo installed and today I learned that it has a "heavy duty" actuator on it (I know, I am still learning). Evidently, the actuator is adjustable from 14 to 18 PSI. Unfortunately, I do not know how to adjust it.

Can anyone educate me?

 

[wildriceracing]

Seems weird answering my own questions, but I found some information for adjusting other turbos and will check it on mine. This post is for others to review and comment on (right, wrong, helpful, not).

Steps:
1. If necessary, jack up the front of the car and support it on axle stands.

2. Holding the wastegate actuator rod near the threaded end with a pair of pliers, slacken the locknut using a spanner. It is important not to hold the rod near the wastegate actuator (the round can) as any slight damage to the rod in that area can cause the rod to bind in the actuator.

3. Remove the circlip or "R" clip retaining the rod end on the wastegate lever pivot.

4. Screw the end piece in (shorten the rod) to increase boost pressure or out (lengthen the rod) to reduce it. See the specification for the approximate relationship between number of turns and pressure adjustment. Best performance will be achieved by adjusting towards the upper end of the specification. However, exceeding the specification can cause problems, including the risk of engine damage in adverse conditions.

5. Replace the rod end on the wastegate pivot and refit the retaining clip. Note that the hole in the pivot for the "R" clip could be vertical and it would be much easier to insert the clip from underneath than from above. However, it would then also be much easier for the clip to fall out.

6. Once again holding the rod with a pair of pliers near the threaded end, tighten the locknut.

7. Measure the basic boost pressure. If necessary, allow the engine to cool and repeat the adjustment.