Jam127 Posted May 28, 2015 Share Posted May 28, 2015 Just put my car into a garage to get the timing belt aux belt etcc done as my aux belt jumped off and damaged a few bits, noticed my timing belt had a split in it too. Anyways the guy at the garage said my inlet cam is 9 teeth out how is this possible?? The car was running after all this had happened and had a slight missfire nothing major, i thought this was down to my crank pulley being mashed and having no weights on it at all.. Any help is appreciated thanks! Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted May 28, 2015 Share Posted May 28, 2015 If it was NINE teeth out it wouldn't run at all! Or if it would run, it would not be drivable. Has the crank damper failed? Quote Link to comment Share on other sites More sharing options...
Jam127 Posted May 28, 2015 Author Share Posted May 28, 2015 Do you mean dampned as in the pulley? If so yes it failed. Had the belt put back on it ran for couple of mins then it jumped again 2 teeth. Looks like its the inlet cam not sure whats up Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted May 28, 2015 Share Posted May 28, 2015 Could be the tensioner, or the tensioner pulley. Unlikely to be a cam problem unless the engine has had starvation issues. Should be trivial to diagnose. Quote Link to comment Share on other sites More sharing options...
Jam127 Posted May 28, 2015 Author Share Posted May 28, 2015 Got it back on. Sounds quite ticky and rattley coming from the top of the engine Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted May 28, 2015 Share Posted May 28, 2015 It'll either not be on correctly, the tensioner capsule is knackered, or there's something wrong with the tensioner arm or pivot. Needs taking apart again.... Quote Link to comment Share on other sites More sharing options...
Jam127 Posted May 28, 2015 Author Share Posted May 28, 2015 The timing belt isnt on wrong.. Sounds like its damaged a cam when its jumped teeth Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted May 28, 2015 Share Posted May 28, 2015 That is all but impossible with that lift and duration, look elsewhere. Quote Link to comment Share on other sites More sharing options...
nootysupra Posted May 29, 2015 Share Posted May 29, 2015 As above. Unless you're running after-market camshafts with increased lift, it's impossible for any damage to occur, hence the non-interference engine. Quote Link to comment Share on other sites More sharing options...
Jam127 Posted May 29, 2015 Author Share Posted May 29, 2015 Thanks for the reply, yes I understand that. Why would i be jumping teeth though? Also he timed it up again had it running on idle fine with a knocking noise, then pressed the clutch and the engine completely cut out and jumped 2 teeth again Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted May 29, 2015 Share Posted May 29, 2015 I have no idea at all, that's (almost) a new one on me, after 42 years in the job. The answer is possibly from a one only time experience. But one never ceases to be amazed The explanation, bizarre as it may sound, is a broken crankshaft. Quote Link to comment Share on other sites More sharing options...
Jam127 Posted May 30, 2015 Author Share Posted May 30, 2015 Ok so he checked out the cams and he came to the conclusion that its seizing so he reckons the oil pump has failed when part of the crank pulley has smashed off it. He drained oil and no shavings or anything like that was seen, still to take the filter off and cut it open to check for shavings in there. A seizing cam would explain the teeth jump Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted May 30, 2015 Share Posted May 30, 2015 Hmmmmm..... Does the oil pressure light go out? Is there any crank knock? Was there visible damage to the oil pump casing? He "checked out" the cam? How? Cams don't usually seize then free again, it all sounds a load of rubbish to me Quote Link to comment Share on other sites More sharing options...
absz Posted May 30, 2015 Share Posted May 30, 2015 If its stalling when clutch is pressed it might be worth checking the endfloat on crankshaft which can also make the timing belt move out of alignment if there is excessive play Quote Link to comment Share on other sites More sharing options...
Jam127 Posted June 1, 2015 Author Share Posted June 1, 2015 I believe the oil pressure light does go out, there is visable damage to it as when my crank pulley smashed it hit the pump housing. Im not sure how he checked it but he said it's definitely sticking causing it to jump. Absz thats what we thought to start with.. How do tou go about checking the end float? Really hope that isnt the problem. Quote Link to comment Share on other sites More sharing options...
Jam127 Posted June 1, 2015 Author Share Posted June 1, 2015 Got some news from the garage.. The inlet cam has seized. Guessing it was sticking first due to oil starvation.. Totally seized now. The cam bearings will be damaged now right? The sump is getting dropped to change the oil pump this week and the crankshaft will be inspected. Anything else to look out for? Also do these cams run on the head or do they have seats to protect the head? Quote Link to comment Share on other sites More sharing options...
Dnk Posted June 1, 2015 Share Posted June 1, 2015 The cams run in the head so more than likely the heads scrap Quote Link to comment Share on other sites More sharing options...
Jam127 Posted June 1, 2015 Author Share Posted June 1, 2015 :'( Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted June 1, 2015 Share Posted June 1, 2015 New head is a big indeed. Now you need to nail down exactly why it seized, if its oil pressure you might have other, much bigger problems. Quote Link to comment Share on other sites More sharing options...
Benjy Posted June 1, 2015 Share Posted June 1, 2015 I'd be scrapping the engine and starting again. If the cam's seized, it'll have damaged the caps which will write the head off. And if there's been enough oil starvation to write the head off, I'd imagine the bores have had it. By the time you've paid someone to open the engine to investigate, get a rebore, new pistons, rings etc you'll probably have spent the same as you would to buy a recon'd bottom end. Quote Link to comment Share on other sites More sharing options...
Jam127 Posted June 2, 2015 Author Share Posted June 2, 2015 We think the oil starvation has came from oil pump which took impact when the crank pulley demolished itself. Im thinking buy another engine and seap it over. Can i buy any 2jz engine ? Iv saw a few but they are from other toyotas and not sure if they are the same. I noticed the inlet mani was different but suppose i could swap them over. They are from toyota aristos.. Quote Link to comment Share on other sites More sharing options...
Scooter Posted June 2, 2015 Share Posted June 2, 2015 Aristo's are front sumped so there is more work involved, but you may wish to renew the oil pump on the replacement engine before it goes in which would involve removing the sump anyway so you could transfer your current Supra sump onto the replacement engine. Also the water pump arrangement may be different on Aristo's? memory is hazy....it's easier with a Supra engine tbh! Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted June 2, 2015 Share Posted June 2, 2015 Aristo water pump, depending of its non VVTI or not, is different. Theres a host of other differences, it was discussed on here a while back. Quote Link to comment Share on other sites More sharing options...
Jam127 Posted June 2, 2015 Author Share Posted June 2, 2015 Thanks guys. Thats about all the info i could find on here.. They seem to be all vvti. Changing sumps exhaust manis etcc etcc wouldnt be a problem as the engines would be out anyways. Im just worrying that engine mounts or gearbox etcc dont match up Quote Link to comment Share on other sites More sharing options...
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