Hey,

Im buying enginetech valves and had a few questions. The stem diameter is about .5mm larger than stock valves.
Will this cause much of a problem if I install these valves in stock spec guides? Do I need special guides?

Never mind, they had the measurement wrong on their site. Please disregard.

You may want to reconsider those valves.

I use and sell bunches of ET parts, They are great!

But for turbo use, I shy away from them, I have trust issues with a 2 piece valve design.

In the heads I build for turbo, The factory 6T valves, or step up to a stainless steel valve.