Turbo wastegate. - Ford Powerstroke Diesel Forum
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Old 10-05-2009, 01:15 PM
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Turbo wastegate.

I installed a bank big head waste gate on my stock turbo. with just holding the gate shut and applying a very little bit of tension on the waste gate actuator it is the same length as the stock actuator. Am I supposed to be tighten (or shorten) the actuator so that I will have to really pull on the actuator to place it over the waste gate?

question 2: I found a Garrett T12 turbo for sale. how would i go about finding what is compatible for my 2000 7.3 psd. The garrett web site is not very helpful.

thanks for the help
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Old 10-05-2009, 02:05 PM
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well the more that you shorten the actuating rod the longer that your wastegate will stay closed and that will help you build more boost. i would just fiddle with it a little until you get it to how you want.
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Old 10-05-2009, 04:04 PM
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I dont mean to hiJack, but when the truck shifts to OD and u get that big woosh sound in the intake, is the wastegate open or closed here??? I get more boost in OD....
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Old 10-05-2009, 04:20 PM
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i would believe that it would be closed here for the most part because you are building more boost but it is closed at lower rpms like in OD
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Old 10-05-2009, 06:16 PM
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sweet thanks, I guess thats y the turbo is louder in OD???
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Old 10-06-2009, 03:49 AM
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yea that and the fact that you have no foil, an intake and a 5 inch exhaust haha
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Old 10-06-2009, 07:34 AM
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ITP has instruction on how to set that wastegate.
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Old 10-06-2009, 09:31 AM
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I guess my main question is whether alot of tension is aloud to be put on the actuator arm? I was under the impression that only a small amount of effort was aloud to be applied to the accuator. I was reading another post and the guy said he tightened the arm so much that he had to do everything he could to put it back on the wastegate. Is that ok to be doing?
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Old 10-06-2009, 04:02 PM
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im sure that there is a point where tight is too tight but i shortened and rethreaded mine and it was a little tough to get on. too much of a good thing is normally a bad thing. i dont have any exact place to tell you where to set it. but i would say if it is crazy tight then that is too much
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Old 10-06-2009, 04:16 PM
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wastegate calibration

Guys,
I'm not a huge aftermarket parts guy, but I know turbos; I've worked for Garrett for over 20 years, specializing in heavy diesel applications. There are specific ways of calibrating a turbo wastegate....and it can be done with a pressure regulator (for the actuator supply port), an accurate pressure gage (to measure the regulator's output to the actuator), and a dial indicator (to measure actuator rod travel when installed on the wastegate arm).
If you want more details, I could send them out....and maybe I could find some pictures of the process.
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