The 617 turbo diesels have a port at the rear of the intake to check boost pressure. I think the thread is M10x1.0 or M10x1.25. Someone please correct me if I'm wrong on the size. The wastegate is factory set to open around .7 bar give or take

Here is an edited listing of materials to make a test gauge for turboboost.

I made a test gauge out of the following materials:

8 feet of 3/16" air brake tubing
one 90 degree quick connect for air brake tubing
one compression fitting for 3/16 brake line
one gauge that reads bar and psi
short length of 3/16 brake line with metric fittings (8" piece)
one coupling to connect quick connect to gauge
smigen of JB Weld
tubing cutter

1: Attach the quick connect to the coupling

2: Attach the coupling to the gauge

3: Attach the tubing to the quick connect

4: Using the tubing cutter, cut one of the ends off the brake line. Use a smigen of JB weld to seal the fitting to the brake line. This prevents any air leaks. DO NOT seal the flared end. Insert the cut end into the compression fitting and tighten.

5: Insert the other end of the tubing into the remaining compression fitting and tighten.

6: Let the JB Weld dry for several hours.


There you have it, a gauge to check boost pressure. See the attached photographs

Alan

Attached Thumbnails

     

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