10v valve needed, get a cuppa, it'll take 10mins to read lol

[twoqu]

I thought you said were going to order the Audi one, i.e an original!

[sam80quattro]

lol nooo, but cheers again for your help

[sam80quattro]

actually i did lol but that part number above in vag cat puts up exhaust valve at 98.5mm long so im it should be the right 1...... i hope

[twoqu]

But the factory valve is only 33mm diameter not nearly 35mm as you have measured/need.
Personally I would sit down and think this out a bit more.
Sodium filled valves do fail and make a right mess of your engine. If one is tired so will the rest. The fact you have had a good grinding session on them illustrates that.
You need replacements of the correct size plus they need to be able to tolerate the heat imposed by operating in a turbocharged application. The sodium is used to cool the valve by redistributing the heat. So choice of material is important if you want durability.
I doubt whether you will be able to just drop a replacement in unless you can source an original. So take the opportunity to replace them all and get the seats recut to put you back to as new condition. Otherwise its false economy!

[sam80quattro]

i see what your saying think i might pull it out and go for a 1.8 20v turbo instead lol

[sam80quattro]

woop woop got a valve which matched perfectly apart from being too long. its from a volvo 244turbo, went to audi, couldnt help, halfords the same lol then went to andrew page(car parts suppliers) and asked if i could read the valve book lol. off to the machine shop tomorrow

[sam80quattro]

oh and checked all the others with a microscope and no cracks so im happy