How do you clean valves when rebuilding a head?

[Boomerang]

if topic creator needs a set of GOOD valves, i have a set from an I head that you can have for 42 plus shipping, i will polish them for 20, they are already beadblasted and spotless, you will need to get them 3 angle'D to your head as well. pics available upon interest

[Jand3rson]

Probably.

[StereoInstaller1]

His prices are probably pretty accurate, Luke. He's the shop foreman at Pacific Motorsports.

So BMA just might be a little chaeper?

[JasonC]

Why are some parts for e30's so much? Is the valves made of titanium and the plug wires of gold?

[Jand3rson]

His prices are probably pretty accurate, Luke. He's the shop foreman at Pacific Motorsports.

[StereoInstaller1]

Intake valve 24.35ea
Exhaust valve 60.55ea
from Pacific Motorsports (The BMW Shop)

Intake valve 26.70ea
Exhaust valve 66.60ea
from Rasmussen BMW

Im thinking BMW, if I was thinking Chevy I would be on a Chevy site...

And your point would be?

"86espowa" said valves are under $140, I was asking HIM where he thinks you can get M20 valves for under $140/set...I know better.

BMA quoted me about $30 each for exhaust, I did not check on intake. Last I checked my math, $140 will not buy exhaust valves, much less a complete set.

[NAGROM]

Where? For all of them, or just one cylinder? You might be thinking Chevy....

Intake valve 24.35ea
Exhaust valve 60.55ea
from Pacific Motorsports (The BMW Shop)

Intake valve 26.70ea
Exhaust valve 66.60ea
from Rasmussen BMW

Im thinking BMW, if I was thinking Chevy I would be on a Chevy site...

[StereoInstaller1]

new valves are just shy of 140 dollars.

Where? For all of them, or just one cylinder? You might be thinking Chevy....

[NAGROM]

carb cleaner+brass brush

Intake valve 24.35ea
Exhaust valve 60.55ea
from Pacific Motorsports

[CorvallisBMW]

wow that is one fucked up head....

[dkmr]

When I worked at an engine macine shop we used a glass beader to get the carbon off. You just have to be careful about spraying the stems, then grind the seating surface.

[SandyEggoE30Girl]

Well this is an extreme case, but none the less, a burnt valve is exactly that.
It could have warpage on it, it could have small cracks in it, or it could have complete sections burned away on the face.

[bmwpower]

I would never spend money on new valves unless you have one or some of them burnt, or they have been ground before, and can not be cut again. Also you need to look at the shaft to make sure there is not to much wear there, or galling . A micrometer is always good to use there to make sure the shaft is still good.

Thanks.

What's your definition of a burnt valve?

[SandyEggoE30Girl]

I would never spend money on new valves unless you have one or some of them burnt, or they have been ground before, and can not be cut again. Also you need to look at the shaft to make sure there is not to much wear there, or galling . A micrometer is always good to use there to make sure the shaft is still good.

[86espowa]

new valves are just shy of 140 dollars.