While changing my oil the other day (that will be a different thread and updates), I noticed that the exposed threads on my stock, K-16 wastegates were of different lengths. I have never touched them, but they were definitely off a few mm (few turns?).

What should they be at in the stock form? How many turns? mm? I'd like to make both of them even if at all possible; perhaps even tune them, slightly.

thanks in advance

 

Markski told me to mark where both are at, and do a full turn to turn and a half, i havent done it yet but will be soon

 

But mine are uneven to begin with... Think of it this way:

One has 1/2" of thread exposed while the other has 1/4" exposed...

 

Hmm weird yea i missed that, i would say even it out both to 1/4, then do one full turn!

 

Somebody should put up a simple DIY on this the right way.

Any volunteers?

 

One of your turbos is working hader than the other one. I would at least even them out.

Sorry not sure of the measurements.

Keep an eye on your boost. Cranking the wastegates increases both boost and boost response.

 

Right. I figured that one was working harder than the other. "Tightening" them in will increase boost/response, yes? Letting them out will slow things down and allow the wastegates to open sooner, right?

I guess what I am asking is if I am going to adjust them, adjust the one that has the least amount of thread exposed so that it is even with the one that has the most?

 

Mark should be tuning in shortly

 

I look forward to the answer...

 

Wow, it got moved back?

 

Ruiner - I would assume the "tail" should be the same lenght on both. Your uneven lengths sound wacky. I think you will need to use one of those "Use a hand pressurizing pump with a gauge (mightyvac) and properly test them" as Sharky mentions in my thread https://www.6speedonline.com/forums/...ad.php?t=45973 .

It's probably pretty important to not screw this up much.

Good Luck - Mike

 

Yes, the "tail" (good word) should be the same I would think/assume. Now, the actual length of the tail is still a mystery...

 

I had a thread on this a while ago.....all I have to say is make sure that they are even and at the right place. They make a HUGE difference if they are not where they are supposed to be. I bought my car and it felt underpowered....took it to the porsche shop and he tweaked the bolt on the wastegate and it added around 40hp to the wheels (yes, i know this bc it was dynoed). I may be wrong, but there is no "right" spot....kind of just have to play around with it to see where your sweet spot is. All the above pertains to a stock car with k16's

 

I was worried about that. Care to explain any specifics of what I should "look" for in terms of tuning? How much "tail" you have on yours? Should I still retain stock boost or might it jump up a hair? Down? What did you notice differently (in terms of boost) when yours was tuned?

Thank you for your input.

 

Can one just go about playing with the waste gate? I was going to get the "waste gate spring upgrade" is that the same thing and is that a good idea or not?
TIA

Ruiner, good luck and even those poor turbos out!!