Whining in even gears

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?

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.

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?

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.

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.

Oh goodie, just what I like to hear!

I've sent you an email Chris

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...

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!

Also, I take it this isn't something that's likely to go away with an oil change and crossed fingers?

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.

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.

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...

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 ?

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.

It was Mark @ Phoenix - already did a search! Not an option any more though

I think it was through Mark but not actually Mark.

Ah ok - I'll drop him a PM then, cheers

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.

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).

Piccies ahoy!

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!