valve lapping

[brent426]

I asked this question a couple of days ago but didint get a clear answer. I have a factory new 426 head 2000 with new oem 2000 steel valves. I know that I can lap them as they are steel, but do I need to? New seats, new valves, do they need it? I have never lapped valves so I dont want to have to do this if there is no need. If however it will help in some way I will figure out how to do this.

[flattrack13]

it never hurts to lap them just to make sure the contact area is where it needs to be but with a new head and valves you should not have to. personally i would

carlos

[JSanfilippo]

I asked this question a couple of days ago but didint get a clear answer. I have a factory new 426 head 2000 with new oem 2000 steel valves. I know that I can lap them as they are steel, but do I need to? New seats, new valves, do they need it? I have never lapped valves so I dont want to have to do this if there is no need. If however it will help in some way I will figure out how to do this.

Read Eddie's and Gray's responses. Its pretty clear, don't lap the valves

https://www.thumpertalk.com/forum/showthread.php?t=597885

[grayracer513]

Let me say this again, a little more simply;

NO.

[642MX]

personally i would

Bad advice. You do not lap valves, ever....