Valve seat help

[eyab689]

I'm rebuilding my engine on my 09 Audi A4 2.0t B8 and the build is almost complete except I have hit a snag. I purchased new Supertech Valves 1mm larger for intake and 2mm larger for exhaust. The company has on its website that you can use the existing intake seat and it can be machined to fit the 1mm larger valve. But for the exhaust valve using a 2mm larger valve the seat will have to be replaced. I have seen people on here have done different builds. So I'm wondering does anyone on here know what size seat is needed to fit for the machine shop to install and machine the seat so the valves will fit? I called Supertech and they weren't any help in letting me know what size seat is needed to fit. They said the machine shop should be able to figure out what size is needed. The shop asked me for the SCI# so I contacted them but they don't show a seat for this cylinder head. So I'd appreciate any feedback anyone could assist me with so I can hopefully get this issue resolved. This is one of the last pieces of the puzzle I need so I can complete this build. Thanks I appreciate it.

Chuckb

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[MongoMcG]

I wish I had an answer for you. I suggest the machine shop should have the expertise, and they may not stand behind their work if a valve gets toasted and they can point the finger elsewhere.

I would also suggest asking this question in the main B8 forum as well. It gets a lot more traffic than this section.

[eyab689]

OK thank you very much appreciated

Chuckb

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