Look at those valve seats (M20)

[Mordan]

Hello people,

I finally removed the head. quite easier once you have done it once already.

http://www.mordan.biz/bmw/headjuly09/e30_culasse.jpg

this pic was taken after the rebuild by the shop.. clean

http://www.mordan.biz/bmw/headjuly09/e30_m20_valves_before.jpg

no more clearance on my head because this!

http://www.mordan.biz/bmw/headjuly09/e30_m20_ex_valve_1.jpg
http://www.mordan.biz/bmw/headjuly09/e30_m20_ex_valve_2.jpg
http://www.mordan.biz/bmw/headjuly09/e30_m20_ex_valve_3.jpg
http://www.mordan.biz/bmw/headjuly09/e30_m20_ex_valve_4.jpg

intake valve is fine

http://www.mordan.biz/bmw/headjuly09/e30_m20_in_valve.jpg

shop is on holiday so gotta wait but they better change those seats free of charge...

anyone has an idea what went wrong in the rebuilt process?

[gale]

You're right, it looks a bit odd. Almost as if they counter-sunk the seat during the re-grind. They really look like they sit down in a pocket. Are they the correct valves?

[Ross]

It doesn't look like the seats have receeded. My guess is the valves or seats were ground at an incorrect angle.