6potmkII 0 Posted June 19, 2007 Report Share Posted June 19, 2007 quick Q to double check:when youve fitted a spacer head gasket to drop comp ratio to 9:1, the timing marks do not line up exactlyie when cams are in tdc position and locking tool is applied, the tdc mark on the crank pully will about 5-8mm before the tdc mark on the engine casing.so when you remove the cam locking tool and rotate the engine so crank pulley is at tdc mark, the cams are slightly advancedthis was the closest i could get it yesterday and pet it down to the fact that the cam sprockets are slightly higher now...cheers Link to post Share on other sites
IbiVR 0 Posted June 19, 2007 Report Share Posted June 19, 2007 Yeah thats ok. It should only be a tiny bit out, but its as the head is raised slightly like you say.The cams should only be a tiny bit out, but it can be enough so that the cam aligning tool wont quite fit.Tom. Link to post Share on other sites
6potmkII 0 Posted June 19, 2007 Author Report Share Posted June 19, 2007 Yeah thats ok. It should only be a tiny bit out' date=' but its as the head is raised slightly like you say.The cams should only be a tiny bit out, but it can be enough so that the cam aligning tool wont quite fit.Tom.[/quote']ye thats right tom, if i get the crank pulley to tdc the cam tool just about doesnt fit in, if i put a little stress on the cam with a 24mm spanner i can just about get the cam tool in i reckon, but ye glad thats confirmed mate cheers Link to post Share on other sites
FishWick 21 Posted June 19, 2007 Report Share Posted June 19, 2007 Sorry I missed your calls on Sunday mate, my phone has been playing up. Seems I spilt some thinners on it and the battery has melted itself onto the phone, so I need a new one. Oops.Anyway, that shouldn't be the case with the timing.As per my guide, using Tom's spacer + VW gasket, the timing was spot on afterwards.I have only once encountered the problem you got ages ago, but that was on a standard engine. The cam advance made it run hotter and was flat from 4000rpm. You might get away with it being as it's now force fed and lower comp.And likewise when using the thin metal gasket with low comp pistons, the cams should still line up.What I usually do with timing is set it, spin the engine round 4 times and recheck it. Then I crank the motor over with the plugs out and crank sensor pulled to get oil pressure in the tensioning bolt, then I check again.I have seen new motors started with no oil pressure in the bolt and if they back fire (not chain related), they can sometimes jump a cam tooth, but it's quite rare for that to happen. Link to post Share on other sites
6potmkII 0 Posted June 19, 2007 Author Report Share Posted June 19, 2007 Sorry I missed your calls on Sunday mate' date=' my phone has been playing up. Seems I spilt some thinners on it and the battery has melted itself onto the phone, so I need a new one. Oops.Anyway, that shouldn't be the case with the timing.As per my guide, using Tom's spacer + VW gasket, the timing was spot on afterwards.I have only once encountered the problem you got ages ago, but that was on a standard engine. The cam advance made it run hotter and was flat from 4000rpm. You might get away with it being as it's now force fed and lower comp.And likewise when using the thin metal gasket with low comp pistons, the cams should still line up.What I usually do with timing is set it, spin the engine round 4 times and recheck it. Then I crank the motor over with the plugs out and crank sensor pulled to get oil pressure in the tensioning bolt, then I check again.I have seen new motors started with no oil pressure in the bolt and if they back fire (not chain related), they can sometimes jump a cam tooth, but it's quite rare for that to happen.[/quote']thats ok kev no probs...thing is kev, ive tried and tried and re done the timing so many times and in differant ways turned engine over by hand with tensoin bolt in and i keep getting to the same result (crank pulley JUST off by say around 5-6mm)iv timed up few my old engine in the mk2 when i changed the cams on few ocasions and always got it spot on no probs with the standard gasket but this is the first time ive done it with a i think its 5mm sandwidched spacer and cant get it exact....another thing is ok lets say the cams are out by one tooth. ive even tried moving them that one tooth and the ITS THE SAME AMOUNT OUT BUT IN THE OPPOSITE DIRECTION if you know what i mean so the cams are same amount out but RETARDED. this is why i came to the conclusion that it was down to the extra "height" of the cam sprockets adding extra tension onto inlet cam side of the chain if that makes sense? hence the crank pulley wont make it round to the tdc mark....please tell me if im not making sense its hard to describe it.... Link to post Share on other sites
FishWick 21 Posted June 20, 2007 Report Share Posted June 20, 2007 Yeah I know exactly what you mean mate..... it's really strange as mine all lined up perfectly and the engine ran sweet.Maybe mine was wrong and yours is right? What you've said makes sense, so I suppose the only way to find out for sure is to fire it up and see what it runs like. Link to post Share on other sites
lee060 3 Posted June 20, 2007 Report Share Posted June 20, 2007 what about taking the woodruff key out of the cam sprockets and then that will give you the ability to time it up perfectly , make sure the bolts are put back on with lock tight , would it work??? Link to post Share on other sites
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