2 Port Wastegate Actuator

[84GNGary]

The vacuum side of the actuator is leaking badly through the shaft. The pressure side holds fine but the actuator doesn't start to move until 7 psi of pressure is applied to it with the vacuum side at atmospheric pressure. Will a 86/87 actuator mount and work properly on the stock turbo? Kirban's has one on sale now and I know it's only one port.

Thanks, Gary

 

[HotAirWH1]

You can't just bolt an '86/'87 wastegate actuator onto a 84/85 turbo without modifications. The bracket holes won’t align with the '85 housing, and the resulting rod angle and length will be off—leading to sticking, inconsistent boost, or poor wastegate control. To make it work, you’ll need to fabricate a custom bracket and likely adjust the rod length to ensure everything cycles smoothly.

 

[pacecarta]

i would just forget about it , cap that hose at the vac block , leave the port on wastegate open ..buick put two hoses thinking they needed it , one works fine

 

[84GNGary]

i would just forget about it , cap that hose at the vac block , leave the port on wastegate open ..buick put two hoses thinking they needed it , one works fine

I'll give it a try.

Thanks for the responses.

 

[Aaron1456]

Here's what I did to run the 86-87 actuator when I was running an internal wastegate, slotted the mounts a bit. It actually lined up pretty nicely. I was also using a manual boost controller so I can't say how well it plays with the stock boost control solenoid.