Williams inlet valves

[Justin..]

if they look ok dont see why not

[MAXIBOY]

soon see when you grind them in..

[Justin..]

what will happen?

[MAXIBOY]

as you grind them in you should get the seat turn grey and clean all the way around.

if the valves bent at all you will get a gap in the seat wheres its not touching..

then you can check for seal by filling all the chambers with petrol to make sure they are sealing

[Justin..]

ahh, do i grind them in with the springs on or not?

[Laine_16v]

Nope no springs. I found one of my valves wouldnt lap in when i rebuilt my F4R head.

Thick grey band one side, tiny thin band the other = non concentric valve seating = epic fail.

[cliokiz]

You don't need anything when grinding them in, just slip the valve in with some paste on and get lapping, making sure to number which pot you put the valve in

Then when you're done you can stick the stem seals, springs, retainers, collets etc on.

[Justin..]

Cool cheers. Laine, how are you going to sort that?

[MAXIBOY]

new valve..

[schakal]

exhaust valves are the same as 16v (19mm) is it not ?