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View Full Version : how was this possible ? broken exhaust camshaft


fani
12-04-2011, 09:29
as it can be seen in the pictures below, the exhaust camshaft was found broken. at a speed of 100 km/h, i heard a noise - bang ! the engine was turned off , couldn't start it again. how was this possible ? the camshaft was lubricated, it was oil there, but it was stucked. who gave up first : the camshaft or the pulley lock up on exhaust valves ?
robi1000
12-04-2011, 09:35
There's a collar on the cam, sort of thrust bearing that prevents cam movement in/out. If that broke, it usually siezes. It happened to me. Check if that's broken.
fani
12-04-2011, 09:39
how can i put pictures ?
it is said : Sorry, you have reached your maximum Upload Quota Limit of 2 MB
the pictures are maximum 150 kb each.
fani
12-04-2011, 10:16
pictures : http://img703.imageshack.us/g/dsc00478d.jpg/
cliokiz
12-04-2011, 10:45
Unlucky! :(

Must have had a fracture or just deteriorated from age perhaps
2 live
12-04-2011, 12:14
mine let go there too. not kent cams by any chance were they?
robi1000
12-04-2011, 14:22
http://img192.imageshack.us/img192/6700/dsc00479p.jpg

This is it. Same as mine.
fani
12-04-2011, 15:50
mine let go there too. not kent cams by any chance were they?
i don't know. how do i recognize them ?
so i'm not the only one who had this problem. mounting another camshaft, could this happen again ? what can i do to prevent it. thanks.
2 live
12-04-2011, 16:44
they are usually stamped on the dizzy end iirc. rn then the spec. mine were rn2002s. kent wouldnt admit a fault, but then according to northy, they redesigned them. as they did with his, still unfitted, items.

mine destroyed the head also. not had a problem on the std cams since, think was about 4-5 years ago now iirc
MatBrown
12-04-2011, 18:19
I've seen a few standard cams fail there.
fani
12-04-2011, 18:22
so if the cams were kent, and i will replace the exhaust camshaft with a standard one, they will be any problems ? i will look for the note on the cams.
2 live
12-04-2011, 18:56
that would depend on the mess it made of the head. on mine, a lump of the collar/thrust bearing broke off and laid accross the 'slot' in the head for it, then the part of the collar still attatched to the cam buried it about 5mm into the head when it hit it lol.

cant really see from the pics how badly damaged that area is on yours. also looks like standard cams, has got standard pulley on.