jza800 Posted May 1, 2016 Share Posted May 1, 2016 I am trying to figure out how much play that are accptel on 2jzgte timingbelt gear, i have clockwise play on it, about 1mm of play, is that normal for the timingbelt gear, or there must not be any play at all??? Quote Link to comment Share on other sites More sharing options...
Shane Posted May 1, 2016 Share Posted May 1, 2016 Not sure if I really understand or should I say believe the question. If you are asking if either of the cam gears should have 1mm of play or movement when the belt is on and tensioned, then no there should be none. If you have and is this related to your knocking problems, then most likely yes. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted May 1, 2016 Share Posted May 1, 2016 Which gear? Is this with no belt on the engine? Send a photo and indicate the gear. Quote Link to comment Share on other sites More sharing options...
jza800 Posted May 2, 2016 Author Share Posted May 2, 2016 it is the crankshaft timing gear, there is play side to side in the keyway on the gear.. Quote Link to comment Share on other sites More sharing options...
jza800 Posted May 2, 2016 Author Share Posted May 2, 2016 (edited) This is the crank after i took the keys out, does that and the keyholes look alright?? i can see on the timingbelt that it looks a little flussy, the belt has only about 1500 km on it.. other than that, does it look alright to reuse?? Edited May 2, 2016 by jza800 (see edit history) Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted May 2, 2016 Share Posted May 2, 2016 Well there should not be. If the photo is of your actual gear the key way looks OK, send a photo (a really GOOD photo) of the nose of the crankshaft. The timing gear should need a puller to get it off. Has the crank damper been run loose at any time? Send a photo of the bore in the damper, too. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted May 2, 2016 Share Posted May 2, 2016 And as if by magic you post them as I was typing Sorry to say that it looks like you need a new cranksahft. If you have access to a micrometer and know how to use one properly, or know someone who does, measure the nose of the crank in a few places. it looks knackered. Still good to see the hole in the crank damper and its key way. Cheers. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted May 2, 2016 Share Posted May 2, 2016 You could Loctite the whole mess on reassembly using Loctite Bearing Fit, but God help the poor barsteward that has to take it apart again, it's a real horrible way to "fix" it..... Quote Link to comment Share on other sites More sharing options...
jza800 Posted May 2, 2016 Author Share Posted May 2, 2016 And as if by magic you post them as I was typing Sorry to say that it looks like you need a new cranksahft. If you have access to a micrometer and know how to use one properly, or know someone who does, measure the nose of the crank in a few places. it looks knackered. Still good to see the hole in the crank damper and its key way. Cheers. We have messure the crankshaft nose off the crankshaft, and it was ok... what do you mean with krackered?? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted May 2, 2016 Share Posted May 2, 2016 If the timing gear will easily rotate side to side when on the crank, then either the gear or the crank nose is worn (knackered). So is one or both key way slots. To me the nose of the crank looks a mess in the photo, and one of the key way slots looks wider than the other. Quote Link to comment Share on other sites More sharing options...
jza800 Posted May 2, 2016 Author Share Posted May 2, 2016 (edited) It is the picture that does that, everthing look worse on pictures i think it is only on the keyway that it kan rotate NOT the crankshaft.. i am pretty sure that previous owner when they last time change the front mail seal, made the keyway ON the timing gear a little bigger, to easyer let it slide over the key ON the crank the harmonic dampner, i think that this will be alright.. it is between the arrows that there is 1mm of play when it goes over the key on the crankshaft, and you can see that they have cut/taken some of the edge at both arrows , that is what i belive is the reason of the play some closere pictures of the crank.. the arrows show some badmarks, but it is from a flathead screwdriver because the key was very stuck in the keyway Edited May 2, 2016 by jza800 (see edit history) Quote Link to comment Share on other sites More sharing options...
mellonman Posted May 2, 2016 Share Posted May 2, 2016 Does look worse on the dampner keyway for sure, whats the condition of the keys like? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted May 2, 2016 Share Posted May 2, 2016 Everything looks as if it's been sanded with 60 grit wet and dry, or filed. If you leave the keys out can you push the timing gear on the crank, and pull it off again by hand? What about the damper? Quote Link to comment Share on other sites More sharing options...
jza800 Posted May 2, 2016 Author Share Posted May 2, 2016 Does look worse on the dampner keyway for sure, whats the condition of the keys like? The keyes look ok, only one that i pretty damage, because it was very tight fit on the keyway on the crankshaft, so had to use a little force to get it off, that way it is so damagde have ordede new keyes and a new timing gear.. Quote Link to comment Share on other sites More sharing options...
jza800 Posted May 2, 2016 Author Share Posted May 2, 2016 (edited) Everything looks as if it's been sanded with 60 grit wet and dry, or filed. If you leave the keys out can you push the timing gear on the crank, and pull it off again by hand? What about the damper? it lookes like that yes.. it is a tight fit, but yes it is posible yes to slide it on with a little grese.. Edited May 2, 2016 by jza800 (see edit history) Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted May 2, 2016 Share Posted May 2, 2016 In that case best you can do is two new keys, a new timing gear and a new damper, all torqued up properly on clean dry mating surfaces. In theory the assembly shouldn't need keys, they SHOULD just be for initial alignment. But don't leave them out! Quote Link to comment Share on other sites More sharing options...
jza800 Posted May 2, 2016 Author Share Posted May 2, 2016 I have bourght 2 new keyes and timing gear.. should arrive within 2 dayes.. why new damper? the keyway looks fine on that.. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted May 2, 2016 Share Posted May 2, 2016 The bore of it is all marked up and if it has not been changed in the last 10 years or say 70,000 miles, it should be changed anyway. That's my opinion anyway Quote Link to comment Share on other sites More sharing options...
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