Auzeras 28 Report post Posted July 13, 2014 Hi Guys, I was wondering if anyone could help me out with what the best way to go about this is. Long story short - M30 engine loses banjo bolt. Cam bites the dust. Engine has 210k km's on it Okay, so the cams not totally toast but I think it's had a good 5-7000 km's on it with no lubrication and as a result is pretty worn, only at the front though with Cylinders 1-2 being the worst. The back end seems ok but it really needs to be fixed. The PO said the head gasket was done some 4-5 years ago so I'm debating what to do. Option 1 - I like doing things well, if you're going to do a job, do it well or don't bother. So if I take the cam off I might as well rebuild the whole head, only barrier there is cost & current wear. Cost - is it prohibitively expensive to buy a rebuild kit (and where from) and wear, is the rest actually worn (which brings me to option 2) Option 2 - Well the cam is worn, so are eccentrics but the head gasket got done recently, so it makes sense to me that the techs doing it would have looked over the head when it was off and noted anything that needed replacing soon or was wearing and done it, things like valves, valve guides etc. Thus if everything still has good life in it, why waste money replacing it. No need to take the head off, just pull the cam out, regrind it and put it back in with new eccentrics.. Only barrier there how to get the cam out without the head coming off. What do you guys think is best for a car with 210k on the clock, I'm not after performance on a 7 series, economy if anything. I can do the work myself, although I have no access to a workshop and this would be the first time doing the head on this particular engine. Like with all things money is a barrier but I figure $500 to keep it in good shape is better than a new 2nd hand car (which I still have to maintain anyway) If I go the cam only route, where is good for a re grind? I couldn't find any stock M30 cams, only performance options. Expensive and money wasted because it's just my daily driver. I don't even know if you can get the cam out without taking the head off. Thanks for any thoughts on this! Much appreciated! Quote Share this post Link to post Share on other sites
BM WORLD 1283 Report post Posted July 13, 2014 ok , yes head has to come off to get the cam out , franklin cams in pukekohe can rebuild it , and do a regrind if you wanted etc. i can do a 2nd hand cam if needed. will need soem new rockers too i suppose. get the head checked at your local head specialist ,( try the cylinder head shop in takanini) i dont know where you are?? skimmed and compression checks done on the valve sealing or get the valves lapped in etc. new gaskets etc and your done. Quote Share this post Link to post Share on other sites
Auzeras 28 Report post Posted July 13, 2014 Cheers for the info, I'm in Wellington but family fly up to Auckland fairly regularly so getting to the shop is no big deal, getting the head checked over should be fine down here, just need to sort out a good shop down here. I could probably find someone to do the cam here but getting to Auckland is easy, I'll just weigh up cost and quality. Ballpark figure on the cost of this all up? Gasket - $60 Rocker arms x12 ~$200 Cam work - somewhere around $200? Head work around 150? No idea how much the machine work will be for cam and head, rockers are about $17 each from FCP not sure if they're cheaper or more expensive in NZ although FCP have been good to me in the past price wise. Are the rockers really worth doing at this point, or should I replace them about now so I don't end up pulling the head 30k kms later. Also as far as my understanding goes now that the cam is lubricated after fixing the bolt it is (fairly) safe to continue driving on it for a bit, considering anything that might be experiencing excess wear is going to be replaced or resurfaced? Also how much for the cam you've got? To do: Cam - ground/rebuilt Head - smoothed off & valves lapped (if needed) Get new head gasket, rockers and win lotto Going to be a week or two with no car.. I'm going to have to drive in the 206 again thanks for the help, much appreciated. Quote Share this post Link to post Share on other sites
BM WORLD 1283 Report post Posted July 13, 2014 just courier the cam up and back Quote Share this post Link to post Share on other sites
Auzeras 28 Report post Posted July 13, 2014 What!? And use common sense!? Not sure why I didn't think of that Quote Share this post Link to post Share on other sites
