3.0 camshaft condition opinion - regrind?
 

I just pulled the camshafts from my '82 911SC and noticed there is some slight pitting on 2, 5, and 6. I'm trying to get an idea if this is at the point where a regrind is a "must do" or if it's something that I can wait on. For some context, I am resurrecting a car that sat in a garage for 25 years. It had good leak down numbers, and I was able to get it running before I started disassembly to replace gaskets, address leaks, etc. My ultimate goal is to have driver, and as an enthusiasts I don't mind having to work on things. In the process of my initial inspection, I discovered several broken headstuds on the exhaust side, so I have replaced all the lower studs with steel and am now reassembling. My motor has Alusil pistons and I am attempting to reuse them - I kept the pistons and cylinders together. Car has 92,000 documented miles on the clock. I've read several posts about valve springs breaking on cars that sit for a long time, so I am planning on replacing those as well, which brings me back to my original question. Is the pitting on these cams enough that I absolutely should have them reground? I plan to keep this car pretty much stock (with the exception of SSI exhaust) and run CIS so I don't think I can go wild with the cam anyway. Just trying my best to keep things in budget and not fall victim to the "while you're in there" trap for things I really don't need to worry about. Thanks in advance for any opinions. I'm new to the 911 world and this forum has been invaluable!http://forums.pelicanparts.com/uploa...1720378529.jpg
http://forums.pelicanparts.com/uploa...1720378529.jpg
http://forums.pelicanparts.com/uploa...1720378529.jpg

No, you can’t run it in that condition. Its toast.

Second that and you need to get the rockers re-faced too.

Buy a good used shaft. SC and Carrera are all the same and tend to be inexpensive sitting on the shelf. Early SC, you’ll need washer and nut with cam.
Bruce

Thanks for the replies. That’s pretty much what I thought, but wanted to get some opinions. Guess I’ll start researching my options.

Rule of thumb - if you can catch it with your fingernail, it’s no good.

Those cams can probably be reground. The key is base circle diameter after regrinding. In street application you have a lot of meat to work with.
We find that a popular way to go if the pitting is too substantial is to regrind it to a 964 profile. Again, it's all about base circle on the finished project. We generally have these regrinds on the shelf is time is a challenge and you want your car back on the road quickly.
We also have a rocker service to match the regrinds we sell.
I know, shameless promotion but such is life.

http://forums.pelicanparts.com/uploa...1720402758.jpg

Some SC's had a "bad batch" of valve springs that would occasionally break, even with low miles and still under warranty. We saw them when I was still working at the stealership. Plus, now they're over 40 years old and time to replace them anyway.

Thanks Henry Schmidt for the shameless promotion. I’ll keep you in mind while I decide what I want to do. I’m leaning against the 964 cam for now only because I’ve read a lot of comments about losing low end torque and for the most part this is just going to be a street car. A spirited driving street car..:)

That journal is in bad shape as well.

Yeah, it looks like it in the picture but that’s just a weird reflection in my shop. It’s actually smooth.