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Wastegate seat seal

 
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bear924  



Joined: 26 Jul 2005
Posts: 72
Location: South West Queensland, Australia

PostPosted: Thu Apr 26, 2018 11:52 am    Post subject: Wastegate seat seal Reply with quote

Hello all,

I'm currently reinstalling my turbo after removing it to repair a vacuum leak. While removing the wastegate, I removed the wastegate seat from the wastegate.

This is the seat that the wastegate piston pushes against when closed.

Looking at marks on my wastegate and the seat piece, it appears that there was some kind of hard ring/ seal between the seat and the wastegate. I can't find anything in my bits and was hoping someone could tell me if there is indeed a ring/ seal, or whether the seat just bolts directly to wastegate body.

A link to a pic (not mine) showing the wastegate and seat.

https://www.google.com.au/search?q=930+wastegate+seat&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjeseGP2dbaAhVHULwKHTJtC-YQ_AUICygC&biw=1682&bih=826#imgrc=pRhsbrENl8XuvM:&spf=1524702956281

This imagine shows no gasket or seals. My wastegate has a mark around the seat and corresponding area on wastegate, suggesting there may have been a ring installed which each piece sealed against.

Does anyone know whether a ring or seal is normally installed between the wastegate and seat?
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bear924  



Joined: 26 Jul 2005
Posts: 72
Location: South West Queensland, Australia

PostPosted: Thu Apr 26, 2018 2:06 pm    Post subject: Reply with quote

Leaning toward no gasket as per:

http://forums.pelicanparts.com/911-930-turbo-super-charging-forum/690610-help-tial-waste-gate.html
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Ian89C4  



Joined: 01 Apr 2011
Posts: 504
Location: North Carolina

PostPosted: Sat May 05, 2018 2:02 am    Post subject: Reply with quote

There is no gasket between the valve seat and the body of the waste gate. Just make sure they are really clean before putting it all back together.

Cheers,

Ian
_________________
Ian Edgerly
Spiveys Corner, North Carolina

Current:
1981 924 Weissach Race Car ("Serenity")
1980ish 931 ("Alice")
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