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sammyb

safe to run with a seized wastegate

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Just took the actuator off my 300tdi and the waste gate its self is seized solid :(

now I know this isnt the best thing in the world to run full boost all the time but is it safe to run for a period of time? (untill i can source another turbo)

Also are the 200/300 turbo's interchangeable?

sammy

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Sounds like you have already been running it like that for a while if you think about it..... it's probably not siezed totally shut.

Can you not unsieze it my soaking it in wd40 and wiggling it with a pair of vice grips? it worked on mine.

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I'll leave it soak in work tomorrow, only thing is I don't want to bugger it up completely as its my daily driver atm and i really dont like riding the "looser cruiser" lol

Whilst i'm at it an maybe get a spare turbo to rebuild, is there a way of hybriding a 300tdi turbo? I know you can on higher bhp petrol ones

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300 turbos are cheap ~100quid, you can get more boost by altering the wastegate actuator.

If i were you, id take the turbo off (hopefully the studs arnt seized too!) and work the actuator with molegrips and try and work in some WD.

I have been told that the WD/penetrating oil will burn at high temperatures and leave carbon thus making them seize more.

A dry lubricant is what you really need.

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How are you testing it? It'll never move by hand, and you won't see it move on the engine until it's under load (full boost). Just revving the engine won't budge it.

Stick an air line on it and you should see some movement. It's unusual for them to fail.

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DO NOT give it full pressure with the air line, turn your pressure down to around 20psi. 170psi isnt good for them. i popped my actuator the other day testing one of mine! (anybody want to buy a actuator? :ph34r: )

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seen a few seized ever but have been able to wiggle them loose though, I think it happens more on vehicles that only potter about, i.e. where the waste gate doesn't get used often.

I tend to think setting max boost to 15psi is best for reliability.

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