Got my girlfriend a corsa for christmas, a few weeks later chain has started to rattel badly (cant adjust the chain its self adjusting using a hydrolic plunger type tensioner , im a mechanic so will be replacing it myself iv done a few already, the kits can be bought from most motor factors i paid £109.00 and got a kit which contains chain, rails, top chain guide, both cam sprockets, crank sprocket, chain tensioner, crankshaft oil seal, timing cover gasket, new cam and crank Bolts and even the timing pin and bar, most of which are genuine parts! so its excellent value for money, if you have a chain problem i would advise you get the parts yourself and then ask around garages to fit it and you should get a good price, fitting it yourself is possible if you have a bit of know how, just be careful when checking the timing and dont skip on cleaning up the mating faces of the parts (timing cover) or it will leak!
Sin, February 2011