Dougs951S

As many of you know, I have a 951 in addition to my NA that I DD. The 951 has been sitting for 8 months with a badly blown engine, and some water got into the cylinder head. The intake valves all look rusty, don't know the condition of the exhaust valves. Prior to the engine blowing this head already needed new valve guides and seals. Are the intake valves toast, or is it just surface rust? Is the head worth saving? I know the exhaust valves are sodium filled but I do not know what they are made of, can I expect them to be just as rusty/ruined as the intake valves? I would suspect that if water was able to sit on the intake valves, it would not have been able to get to the exhaust valves and I may find they are fine or only have minimal flash rust on them.

Thanks!

Van

The valves are made out of stainless steel. The seats are regular steel.

This is common on cars that sit. Take the head off and send it out to an engine machine shop for a full valve job, and it'll come back as good as new.

Dougs951S

That's what I was hoping Van, that just the seats were destroyed. So I wont be looking at buying new valves? Just new stem seals, guides and seats + grind?

V2Rocket

get a green scotch brite pad and WD40. spray wd40 onto rusty valves and gently scrub valves clean.

drink a beer and look on in awe at how clean the valves are.

Dougs951S

Thanks!

Van

To add, you *might* have to replace a valve if either the stem is worn or it's bent slightly... But it's unlikely you'll be replacing it because it's rusty.

curtisr

Using a drill or lathe, fix valve and use emery cloth.