1G Turbo Actuator location?

[holland]

The bracket for my actuator just recently broke, apparently the previous owner decided to relocate it and he had to bend the bracket to do so. Unfortunatly the bracket was mounted to the outside of the O2 sensor housing, one of the hottest places on the engine.

It got so hot the bracket finally gave way. I had a buddy of mine weld it back up but there was something that I noticed. The actuator was located on the exhaust side of the turbo instead of on the turbo side. WTF

From every single photo of a turbo setup I've found online, it seems all actuators are located on the turbo side. So does this mean my actuator is on backwards?

I have a turbonetics T04E 50 trim with a bullseye housing, check out the photo and if anyone can tell me anything that would be awesome!

 

[10minutequarter]

Does it work? If it does I say leave it.

 

[Defiant]

The discoloration on that servo should show that it's not likely to work for very long.
Putting the effort into moving it to the cold side will save re-purchasing actuators.

 

[holland]

I'm just wondering if I switch it to the other side, wont that change the direction that the wastegate is pushing on the actuator?

 

[kenamond]

I'm just wondering if I switch it to the other side, wont that change the direction that the wastegate is pushing on the actuator?

Yes.

You might be able to replace the bracket with a steel one. Yours looks like it's aluminum which is very susceptible to fatigue. That whole turbo/O2 assembly will be vibrating due to the exhaust putts, and that cantilevered WGA will most likely resonate like a tuning fork as the motor runs. The largest stress in the bracket happens to be where it broke (imagine that). A steel bracket may fix the problem longer-term than welding the aluminum one, but you still have to address the problem that Defiant raised about the heat off of the O2 housing eventually killing the WGA. You might be able to help this by wrapping the DP with exhaust wrap or maybe fabbing some sort of heat shield.

If you have the machining capabilities, you could also modify the WG lever on the housing so that you could flip it 180* and fabricate a bracket to mount the WGA on the compressor side.

 

[holland]

Thanx for the suggestions! A buddy of mine welded the bracket back up and reinforced it so its stronger. Its not made of aluminum though, we couldnt really figure out what it was made out of.. haha. But it welded up fine.

Everyones right though, I do need to move it to the turbo side of things. I'll have to fab up a better bracket so I can mount it more securely on the other side.

thanx!

 

[kenamond]

Thanx for the suggestions! A buddy of mine welded the bracket back up and reinforced it so its stronger. Its not made of aluminum though, we couldnt really figure out what it was made out of.. haha. But it welded up fine.

Everyones right though, I do need to move it to the turbo side of things. I'll have to fab up a better bracket so I can mount it more securely on the other side.

thanx!

How did you weld it without knowing what material it was? Just curious.