possible to bypass external wastgate?

[Timberwolf]

If there is no signal line going to the wastgate, will it still vent? I am trying to troubleshoot my system. it keeps venting at 5-9 psi.

I went back to a modified stock wastegate without the MBC inline, thinking maybe the deltagate would just sit there idly bypassed and let the stock style gate do it's job instead. Nope, still max venting by 9psi. I assume this has to be related somehow to the spring pressure in the wastegate. But what gives it added resistance to opening?

Can I bypass or render ineffective the deltagate? Any other ideas what my problem is?

Hopefully someone knows the answer. I am new to the forum, and I know I may have a lot of questions, but I don't seem to get very many responses (if any) compared to the number of views...

 

[JZ 97 SS 1500]

I assume you are using an internal and external wastegate according to your post. If so, easiest way to bypass the external one is simply remove it and make a block off plate for the flange. Even if their is not boost reference on the gate it will still open due to pressure exceeding the internal spring.

Jose

 

[Taffy]

Originally posted by Timberwolf
If there is no signal line going to the wastgate, will it still vent? I am trying to troubleshoot my system. it keeps venting at 5-9 psi.

I went back to a modified stock wastegate without the MBC inline, thinking maybe the deltagate would just sit there idly bypassed and let the stock style gate do it's job instead. Nope, still max venting by 9psi. I assume this has to be related somehow to the spring pressure in the wastegate. But what gives it added resistance to opening?

Can I bypass or render ineffective the deltagate? Any other ideas what my problem is?

Hopefully someone knows the answer. I am new to the forum, and I know I may have a lot of questions, but I don't seem to get very many responses (if any) compared to the number of views...

With the MBC inline with the internal gate, you should be able to run lots of boost.

If you just disconnect the line going to the actuator on the internal gate, the boost should be able to go above 9 psig. It will only open if the back pressure is so high that the pressure is opening the puck.

If you do not have any lines going to either of the wastegates, your boost should go up WAY past 9 psig.

Sounds like the external gate is messed up. You can take it off and use a block off plate. You do not need the external gate anyways.

Do not bother with blocking off the internal gate, that is not where your problem is. The problem is with the external gate.