67 Dart Build Triangulated 4 link & Mini Tub

I am using 2 60mm Wastegates and 2 50mm Blow off valves. These were purchased thru ebay also.

I am still waiting on the other wastegate that was back ordered. It should be here next week.

Anyway I was doing some reading on these parts and decided to take them apart and check them out. I did find that all the O rings were tore in the wastegate, a nut was the wrong size and probably would have came off. SOooooooooo, I basically rebuilt it with new o rings, new nut and jam nut to hold the diaphram on. The Diaphram is made out of some good material, it looks exactly like the Tial Diaphram! I cleaned it all up and used RED Locktite on all the allen bolts, nuts etc. I polished the valve and also put a healthy dose of anti sieze on it. The valve is made out of SOLID STAINLESS.

I also took out the middle spring and left the skinny coil which is the fattest spring in it. I hooked it up to bench test it and the valve opened smoothly at about 4lbs of boost. So I hooked up my Hallman boost controller and turned up the boost pressure to 45lbs. That thing works awesome. I can control the boost from 4lbs all the way up to the set pressure of 45+ or whatever I set it at. The valve opens SMOOTH and closes perfect.

I also took apart the Blow off Valves and inspected them. They were fine with nothing to report. I did however take out the same spring "the middle one" and bench tested both of them with a TEE and calibrated them to open at the exact same time with 10lbs of back pressure. So when the throttle shuts the butterfly's on the carb at say 5lbs of boost the pressure in the intake tube will probably go to 10+ lbs and BLOW off the boost in the tract! They work awesome on the bench!

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