z-ya Posted February 13, 2003 Share Posted February 13, 2003 I picked up an N47 head reacently cheap. It looks like it has never been run before. The valves are clean and so are the combustion chambers. It looks like it was bolted on a car, and then never run. Anyway, it also looks like it has been sitting around for a while, and the cam and lifters have surface rust on them. Anyone know the best way to remove this without damaging the cam or lifters. I was thinking fine scothch brite and WD40. Or maybe fine steel wool. Is the cam junk once it get's rusty? Any suggestions? Thnaks, Pete Quote Link to comment Share on other sites More sharing options...
Tim240z Posted February 13, 2003 Share Posted February 13, 2003 Is it rusty on the bearing surfaces too, or just the lobes? I've used very fine emery cloth before and had no problems. Hell, I put a rusty cam in once (no rust on the bearing surfaces) and just ran the thing and changed the oil & filter after a couple of hours of running. To my knowledge that engine is still running asound somewhere. Tim Quote Link to comment Share on other sites More sharing options...
johnc Posted February 13, 2003 Share Posted February 13, 2003 I would try a chemical rust remover first (if the head is off the car). Quote Link to comment Share on other sites More sharing options...
z-ya Posted February 13, 2003 Author Share Posted February 13, 2003 One of the bearing surfaces is rusty. It was seized in the cam tower. I soaked it in penatrant for a few days, and it came right out. I guess if none of the surfaces are pitten, then it's probably OK, right? Thanks, Pete Quote Link to comment Share on other sites More sharing options...
DAW Posted February 13, 2003 Share Posted February 13, 2003 Walnut shells. Tumbling in, or blasting with I believe will freshen up a hard metal part like this without significantly changing it or abrading the wear pattern on surfaces. Double check this, but I think I read it somewhere. DAW Quote Link to comment Share on other sites More sharing options...
David K Posted February 14, 2003 Share Posted February 14, 2003 I had a rusty cam. I just threw it on and gobbed it up with motor oil and put the cam cover on and ran the sucker for 10 minutes and all rust go bye bye. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.