Cylinder Head Servicing: Grinding Valve Seats 

I use a valve face scibe. Work very well to transfer to the seat for contact location

Thank you very much

Completely unrelated to car engines, but working on a hard seated valve (hydraulics) design. This was very useful. Importantly in my case the "interface angle". Opposed to the whole potential contact surface. Just reaffirmed the direction I was going. Well explained for an engineer.

OLÁ. PARABENS. Até hoje, 19/12/23, esta é a ÚNICA EXPLANAÇÃO CORRETA QUE VÍ NA INTERNET. Eu poderia acrescentar algo prático, talvez pouca coisa na parte econômica, mas não o farei em RESPEITO A SUA CAPACIDADE TÉCNICA. ABRAÇOS...Roberto Udo Krapf

i need bay this pl wher

Hello from where you buy this machine I need such a machine for working can you help me to buy