Car is boosting outta control!!!

[Turbo&Auto]

I got my 92 Accord running now with my turbo setup. I started driving it a bit today and when I went to boost, it spiked right up to 20psi! I immediately let off!

I checked all my vacuum connections and even put some RTV around the nipple on the Wastegate Actuator. Still went to boost real high. I let off at 14 that time.

My friend with the Turbo Colt said the wastegate acutator is bad, and stuck. Does that sound right? Is there anything else I can try first?

Any help is greatly appreciated. I want to drive this thing

 

[Turbo&Auto]

I should add that its a manifold off of a DSM with a EVO3 turbo and internal wastegate.

 

[VTECPOWER]

I would assume that's what's wrong, i mean, that's the only other thing that controls the boost.

 

[Turbo&Auto]

Damn, no boost for me or wait, too much boost for me

 

[Cashizslick]

Replace the actuator spring or get a new turbo.

 

[Turbo&Auto]

new turbo!? For a stuck actuator?

 

[Cashizslick]

The key word in my last post was or.

What kind of turbo is it that you have? If its a t25 or 14b then you may actually have a vac line problem with ur boost meter resulting in inacurate readings. T25 stock actuators cant handle more than 12 lbs effectively (on the stock spring that is).

 

[Turbo&Auto]

I found out the problem is the spring, its way too stiff for my project. I'm going to have the flapper welded shut and use a manifold with a external wastegate. Thats the only way I'll see 6-8 psi with this turbo.

 

[Cashizslick]

Quoted post[/post]]
Replace the actuator spring or get a new turbo.

 

[posol]

yup, i was going to say-- i bet that WG is set for at least 16-18 psi from the factory.

jsut buy a new actuaotr.

http://www.atpturbo.com/Merchant2/merchant...tegory_Code=WGT

 

[Turbo&Auto]

Thanks 4 the link, prolly end up buying that one

 

[posol]

i have no idea if that fits. better call and ask.

 

[Turbo&Auto]

New wastegate actuator is on the way, will have it Fri. YESSSSSSS!!

Thanks for the link, worked out well for me.