Keith C Posted September 1, 2014 Share Posted September 1, 2014 It's been a while since I posted, but hopefully someone can help. I've had a bit of a whine in 2nd for many years. However tonight I noticed it a little in 6th too. After doing some dicking around, I concluded: 1) It happens in even gears only 2) It's got a *lot* worse in 2nd - getting up into high revs just sounds plain awful now This seems to have come on reasonably recently - only change in some time has been to replace the rubber boot around the gear lever (under the leather sack) Where should I look first? 'box oil level? Quote Link to comment Share on other sites More sharing options...
Gaz6002 Posted September 1, 2014 Share Posted September 1, 2014 Change the oil and inspect the old stuff to look for small bits of metal. Sounds a little like the 'box might be wearing out. Quote Link to comment Share on other sites More sharing options...
mpobor Posted September 2, 2014 Share Posted September 2, 2014 Change the oil and inspect the old stuff to look for small bits of metal. Sounds a little like the 'box might be wearing out. sorry for the OT... but i'm courious, this gearbox are known to be extremely tough and reliable, of course is not made out of adamantium so after 20 years of work must wear out, how many miles do you have in the tacho? Quote Link to comment Share on other sites More sharing options...
Dnk Posted September 2, 2014 Share Posted September 2, 2014 If it's making that much noise i'd say its in need of a gearbox specialist and a rebuild. Give CW a call as he will more than likely be able to help you or know of someone that can. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted September 2, 2014 Share Posted September 2, 2014 I need to look in the manual to remind myself of the gear train layout, I'll get back to you, but suspect layshaft bearing issues. These six speed Getrags walk a fine line between scrap and economically viable to repair when they knacker up, parts are very dear, and a rebuild is labour intensive. Quote Link to comment Share on other sites More sharing options...
Keith C Posted September 2, 2014 Author Share Posted September 2, 2014 Oh goodie, just what I like to hear! I've sent you an email Chris Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted September 2, 2014 Share Posted September 2, 2014 I'll answer here, I would say the prime suspects are the layshaft bearings and / or the layshaft. Toyota call it the counter shaft. Could be collateral damage... Quote Link to comment Share on other sites More sharing options...
Keith C Posted September 2, 2014 Author Share Posted September 2, 2014 Cheers Chris! What are my options at this point? It looks like I have a couple of gearbox specialists nearby, or should I simply be looking at the idea of just replacing the box entirely? Is this something that you're able to take on? Shame I don't live closer to you! Quote Link to comment Share on other sites More sharing options...
Keith C Posted September 2, 2014 Author Share Posted September 2, 2014 Also, I take it this isn't something that's likely to go away with an oil change and crossed fingers? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted September 2, 2014 Share Posted September 2, 2014 Changing the oil will not help. It is certainly something mechanical assuming the oil isn't incredibly low. I did a MKIV Getrag and an R34 Getrag, and both times the customers were horrified by the cost. Parts are mega dear, and have to come from Japan, often with a hefty lead time. The labour involved is such that anything other than a comprehensive rebuild leaves me open to doing it twice if it still has issues after a half hearted attempt to fix a single problem. So I'll be sticking to race transaxles that are a dream to strip and rebuild, and aren't on the bench for weeks and weeks I have heard of road car gearbox specialists who have stripped these and then couldn't fix them for whatever reason. If you are adamant about fixing yours we could talk, but until it's apart the extent of the damage can only be guesswork. Quote Link to comment Share on other sites More sharing options...
Keith C Posted September 2, 2014 Author Share Posted September 2, 2014 Cheers for that Chris! I guess the opposite question is what am I leaving myself open to if I don't do anything; am I risking a catastrophic and messy failure, or will it likely just get noisier and noisier until it stops working one day? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted September 2, 2014 Share Posted September 2, 2014 It'll *PROBABLY* get a lot noisier before doing something horrible, but don't quote me on that I am speaking to someone who may have access to Getrag parts later, I'll have a word and see what the score is Keith. Quote Link to comment Share on other sites More sharing options...
Keith C Posted September 2, 2014 Author Share Posted September 2, 2014 It'll *PROBABLY* get a lot noisier before doing something horrible, but don't quote me on that I am speaking to someone who may have access to Getrag parts later, I'll have a word and see what the score is Keith. Cheers - fingers crossed! It's been a while since I drove the A14... Quote Link to comment Share on other sites More sharing options...
Tyson Posted September 2, 2014 Share Posted September 2, 2014 Cheers for that Chris! I guess the opposite question is what am I leaving myself open to if I don't do anything; am I risking a catastrophic and messy failure, or will it likely just get noisier and noisier until it stops working one day? It'll *PROBABLY* get a lot noisier before doing something horrible, but don't quote me on that I am speaking to someone who may have access to Getrag parts later, I'll have a word and see what the score is Keith. If it goes though I'm assuming it'll destroy other things along with it making it more expensive and potentially unsalvageable ? Quote Link to comment Share on other sites More sharing options...
Alex Posted September 2, 2014 Share Posted September 2, 2014 Keith, Ian C had his Synchro's for 4th rebuilt a while back - may have the contact details of the person that did the work. Quote Link to comment Share on other sites More sharing options...
Keith C Posted September 2, 2014 Author Share Posted September 2, 2014 It was Mark @ Phoenix - already did a search! Not an option any more though Quote Link to comment Share on other sites More sharing options...
Alex Posted September 2, 2014 Share Posted September 2, 2014 I think it was through Mark but not actually Mark. Quote Link to comment Share on other sites More sharing options...
Keith C Posted September 2, 2014 Author Share Posted September 2, 2014 Ah ok - I'll drop him a PM then, cheers Quote Link to comment Share on other sites More sharing options...
Fitz Posted September 3, 2014 Share Posted September 3, 2014 Not sure if this will help but thought I would post it all the same; http://www.jackstransmissions.com/collections/supra-v160-rebuild-options They are based in the US is the only thing. Quote Link to comment Share on other sites More sharing options...
Ian C Posted September 3, 2014 Share Posted September 3, 2014 It was 5th on mine, which was handy as 5th/6th is actually just an add-on module to the basic 4spd Getrag box. 5th is the first gear set you get to so relatively little dismantling required. There is a post on here of the complete rebuild instructions and a set of parts numbers and prices (obviously now out of date). Quote Link to comment Share on other sites More sharing options...
Ian C Posted September 3, 2014 Share Posted September 3, 2014 Piccies ahoy! Quote Link to comment Share on other sites More sharing options...
Keith C Posted September 9, 2014 Author Share Posted September 9, 2014 Blimey - cheers for all that Ian. However, and this is bizarre, it seems to have disappeared again! It's a bit clunkier than I remember in the even gears, but doesn't seem overly noisy! Quote Link to comment Share on other sites More sharing options...
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