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How far is wastegate supposed to open? (14b)

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pecka

20+ Year Contributor
61
0
Jul 20, 2004
Valley City, North Dakota
I have a 14b that I am putting on my car. I was told to port behind the wastegate so it opens 90*. Well when I put some air to the vaccum fitting on the actuator the wastegate actually only opens about 40*. Is this right? Did I just waste the time I spent porting so it would open 90*? Thanks In advance.
 
40* is about right. Almost no internal wastegate will open up fully to 90* unless it were actuated by a custom mounted electronic actuator.
 
pecka said:
I have a 14b that I am putting on my car. I was told to port behind the wastegate so it opens 90*. Well when I put some air to the vaccum fitting on the actuator the wastegate actually only opens about 40*. Is this right? Did I just waste the time I spent porting so it would open 90*? Thanks In advance.

I just did this 3 days ago and I noticed the same thing you did , but I believe that it is normal. I have never had boost creep on this turbo running 18-19 lbs. I run a custom made 02 housing wiht a 2 inch dump tube that is routed back into the downpipe warther back.
 

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