Wastegate Mods

[fatz]

ive done a few searches

my car suffers from the infamouse wastegate creep

is it as easy as changing the wastegate to a tighter one or changing a spring, maybe replacing it with say another model of wastegate

all I can find are people saying my mechanic removed the wastegate and drilled something?

any help appreciated (im looking at running around 1.2 bar if that helps)

thanks in advance

cheers

pete

[2fardown]

I'd like to know this as well.

[Guest]

I'd like to know this as well.

<{POST_SNAPBACK}>

me 3 as the only way I know is replacing the actuator with a new one or removing the factory control and replacing it with something better!!!

[bcl]

Have a read of some old threads from a couple of years ago.

There's heaps of material on this forum.... just a matter of knowing where to look, but I suppose only if you've been around long enough.

1.

Bov And Wastegate

http://www.fordxr6turbo.com/forum/index.ph...695&hl=actuator

2.

wastegate, wastegate

http://www.fordxr6turbo.com/forum/index.ph...091&hl=actuator

Drilling a hole, or performing some mild porting to use a larger swing valve is related to getting more gas flow through the wastegate, and that's a different issue from wastegate creep altogether.

Brian

[bugster70]

Umm, could someone please tell me what 'wastegate creep' is exactly, and how you recognise the symptoms?

[bcl]

Wastegate creep is where your wastegate opens at an earlier point than required, as compared with the point at which maximum boost is reached. The earlier it opens the more boost is bled off, reducing power. Ideally, you want the wastegate closed as long as possible, up to the point of maximum boost; you then want it opened as quickly as possible to dump the gas.

I'll qualify my previous post: you could argue that if you run bigger wastegate you can run a bit higher spring pressure to reduce wastegate creep.

Obviously external wastegates are far better, being much bigger than internal wastegates to remove gas much quicker, and enabling far better boost control.

All serious turbos run these.

One of the reasons why Electornic Boost Controllers have been popular over the past 10 years is because they help reduce wastegate creep.

Brian

[bugster70]

Thanks Brian, makes sense to me.

So how serious an issue is this wastegate creep for T's and how do you know if you're suffering from it if it's only a minor problem?

[F6 UTE]

Thanks Brian, makes sense to me. 

So how serious an issue is this wastegate creep for T's and how do you know if you're suffering from it if it's only a minor problem?

<{POST_SNAPBACK}>

You will have to hook up a boost gauge, and check it under load. If it peaks, then gradually falls back, you need more spring tension.

Either that, or hook it up to a boost gauge on a dyno, and check the boost mapping.

[fatz]

cheers bcl