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Justin..
14-06-2010, 19:33
32mm right ?

How much are they ? Some are bent in my turbo head :(
MAXIBOY
14-06-2010, 19:35
hi mate they are only availbe in four i think from renault only...

can turn megane valves down in a lathe..
Justin..
14-06-2010, 19:37
hmm i bet theyre £100 or something stupid
Justin..
14-06-2010, 19:39
oh i need exhaust valves too
snowman
14-06-2010, 19:48
think i paid around £110 from stan who got them ordered from Renault for 4 valves and that was about 2yrs ago
MatBrown
14-06-2010, 19:48
How many do you need?


Mat.
jay s
14-06-2010, 20:53
4 inlet valves from renault are £106.30 inc vat

http://i10.photobucket.com/albums/a117/jay16v-/inletvalve.png
Justin..
14-06-2010, 21:00
How many do you need?


Mat.


2 from what i can see
Justin..
14-06-2010, 21:01
2 inlets, 3 possibly 4 exhaust
MatBrown
14-06-2010, 21:24
I 'might' have some, engine had suffered a belt failure, do you want to risk the ones that might have survived?


Mat.
Justin..
14-06-2010, 21:30
if they look ok dont see why not :?
MAXIBOY
14-06-2010, 21:48
soon see when you grind them in..
Justin..
14-06-2010, 22:04
what will happen?
MAXIBOY
14-06-2010, 22:37
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..
14-06-2010, 22:52
ahh, do i grind them in with the springs on or not?
Laine_16v
15-06-2010, 12:14
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
15-06-2010, 12:47
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..
15-06-2010, 13:09
Cool cheers. Laine, how are you going to sort that?
MAXIBOY
15-06-2010, 13:24
new valve..
schakal
15-06-2010, 15:08
exhaust valves are the same as 16v (19mm) is it not ?
Justin..
15-06-2010, 17:09
Look alot bigger than 19? Didn't measure them though tbh.
Laine_16v
15-06-2010, 21:59
Cool cheers. Laine, how are you going to sort that?

i bought 8 new inlet valves :D, although they only cost me £35 for the F4R, like said previously in this thread, little more expensive for williams, but id give some 2nd hand valves a go.