Wastegate leaking around the valve guide ?s.

Reply Subscribe

Thread Tools

Search this Thread

07-17-2009, 04:58 PM

Stampede4ever

TECH Fanatic

Thread Starter

Join Date: Dec 2005

Posts: 1,412

Likes: 0

Received 28 Likes on 23 Posts

Wastegate leaking around the valve guide ?s.

I was testing my new wastegate with an air compressor, and I'm getting some leakage at the valve guide. Is this normal? It's not bad, but I can here it leaking, and I can feel it when I cap the ends with my hands.

Stampede.

Reply Like

07-19-2009, 01:44 AM

DeltaT

TECH Addict

iTrader: (5)

Join Date: Jun 2005

Posts: 2,404

Likes: 0

Received 1 Like on 1 Post

What WG is it? I want to look it up first.

Jim.

Reply Like

07-19-2009, 03:26 AM

Johnv

TECH Enthusiast

Join Date: Jan 2004

Location: New Zealand

Posts: 608

Likes: 0

Received 0 Likes on 0 Posts

pretty normal

Reply Like

07-19-2009, 02:16 PM

Stampede4ever

TECH Fanatic

Thread Starter

Join Date: Dec 2005

Posts: 1,412

Likes: 0

Received 28 Likes on 23 Posts

I'm going to take the wastegate apart, and check how much clearance there is. So my next quesiton is how much clearance should there be?

Stampede.

Reply Like

07-19-2009, 04:25 PM

Johnv

TECH Enthusiast

Join Date: Jan 2004

Location: New Zealand

Posts: 608

Likes: 0

Received 0 Likes on 0 Posts

They have a reasonable amount of clearence to cope with heat expansion and do not have any type of seal or o ring between valve stem and giude.
so yes they do bleed off some through the guide/stem.

Reply Like