I was hoping somebody would know, off the top of their head, the thread specifications for the valve adjusters, both the 1.7 and the 2.0

Thank you in advance

Sorry to bump an old thread, but I wanted to answer this for posterity...

Early adjusters are 8mm x 1.00
Late adjusters are 10mm x 1.00

I have a M8x1.0 tap but I need to order a die to chase some 911 adjuster threads.