Roger Chatfield 0 Posted September 15, 2014 As some of you may well know I'm in the process of fitting a newer engine to my rado. So, when I removed the cams from my old engine I discovered this damage. Now, ideally I'd like to reuse the cams so I was wondering can these be repaired?? I'm thinking maybe grind the journals smaller and fit bearing shells but I'm not sure if this is possible. BTW I'm using a different head so I'm worried about the damage to that. Rog. Quote Share this post Link to post Share on other sites
seanl82 23 Posted September 15, 2014 I've got a set of cams out the 2.8 you can have Rog. I'll post em off to you tomorrow if you want them mate? Quote Share this post Link to post Share on other sites
seanl82 23 Posted September 15, 2014 Pretty sure I have the shells too I'll chuck in mate. Quote Share this post Link to post Share on other sites
Roger Chatfield 0 Posted September 15, 2014 Thanks for the offer mate but I've got a set of 2.9 cam here that I have fitted for now, but really I'd like to get these repaired if possible. Rog. Quote Share this post Link to post Share on other sites
seanl82 23 Posted September 15, 2014 Ah yeah, just read on your members gallery and realised these were your SP cams. No idea if these can be repaired though sorry. More than likely someone can, but whether it would last or be cost effective is another matter. Quote Share this post Link to post Share on other sites
Dox 22 Posted September 15, 2014 The cams don't have shells. Your best bet it to take the cams to an engine machine shop for assessment, but to me they're scrap, if you can't machine them to as new the journals will grind away the "new" head and its cam caps as they are softer alloy. You can't swap cam caps from one head to another as they're machined bolted to the head in the first instance, line bored so the bores are perfectly round Quote Share this post Link to post Share on other sites
16VG60 0 Posted September 16, 2014 Sorry to be the bearer of bad news but with the damage you illustrate in your pics to the cam journals and caps is terminal. The cam can not be machined as this would in turn require oversize bearing shells to be fitted to compensate for the undersized journal diameter. Shell bearings are not available for the cams and have never been, as the cylinder head is line bored to the cam journal dimension. So indeed as the cams are scrap so too is the cylinder head. Quote Share this post Link to post Share on other sites
Jim 1 Posted September 16, 2014 What would cause that kind of damage to the cams / head? Oil starvation? Quote Share this post Link to post Share on other sites
16VG60 0 Posted September 16, 2014 Oil starvation, contamination or poor oil quality most likely cause Jim. The head is the first point in the engine to suffer when oil pressure is reduced. I would want to establish cause before replacing / fitting new parts. The same thing could re-occur if not first identified and rectified. Quote Share this post Link to post Share on other sites
Kevin Bacon 5 Posted September 16, 2014 The cams don't have shells. Your best bet it to take the cams to an engine machine shop for assessment, but to me they're scrap, if you can't machine them to as new the journals will grind away the "new" head and its cam caps as they are softer alloy. You can't swap cam caps from one head to another as they're machined bolted to the head in the first instance, line bored so the bores are perfectly round +1 Rog, 2.8 and 2.9 cams are the same anyway, so use what you've got to hand. Quote Share this post Link to post Share on other sites
