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The mkiv Supra Owners Club

V160 Advice


2soops

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Hi All, was hoping for a bit of advice on my V160

 

When its cold, 1st, 2nd and 3rd are difficult to select, and when warm its better but not perfect. Also im wondering if someones had it apart previously, because to change gear from 1st to 2nd, and more noticably on 5th to 6th, you cant pull the stick back in a straight line, you have to come back and to the side a bit. It feels like your waiting half a second for everything to line up in the box before you can select the gear without forcing anything.

 

As far as i know its got the correct oil in it, because i asked when the conversion from an auto was done.

 

Apart from this theres no other problems with the box, it makes no noise at all in any gear.

 

At the moment it frustrates me every day cos ive only got a short drive to work and am mostly using it while its still cold.

 

Am i looking at a rebuild or synchros to sort this out

 

Any advice appreciated, Al

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The v160 isn't the smoothest of boxes at the best of times! The change from 1 -2 can be a bit stiff but it should be stright back. 5 - 6th is not straight back though, it's back and very slightly to the left.

 

Changing the oil would be a good and easy 1st step to rule out wrong oil in the box or low oil level. Toyota use Esso Dextron D21065 (since Toyota badged "V160" oil is not available anymore), though some people have used ATF 220.

 

It could also be a faulty bush on the selector mechanism, that seems to be getting much more common the last few years.

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What Homer says sounds spot on actually, I never felt like the supra box is a smooth box tbh, but still better than EVOs :D

 

I've got V160 oil in the box for few years now and its still not like what you'd think of a smooth box, but you'll get used to it :D

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Il have to go a different way to work and take longer so it warms up more.

 

Cheers for all your advice guys

 

I wouldn't worry about the 5-6 change, that just takes a bit of practice :D

 

1 -2 should still slot in okay, so if you're finding it difficult it does need looking into (unless you're a wimp of course ;) :D ). Gearbox issues don't tend to get any better! Change the oil for sure, it's easy and cheap to do.

 

To answer your earlier question, the two bushes are external and connect the extended selector mechanism to the gearbox. I expect the box would need to be dropped a bit to get access (did mine while it was off the car, so was easier). If there's anything more than a few mm play on the selector mechanism it would indicate they are worn

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I wouldn't worry about the 5-6 change, that just takes a bit of practice to :D

 

1 -2 should still slot in okay, so if you're finding it difficult it does need looking into (unless you're a wimp of course ;) :D ). Gearbox issues don't tend to get any better! Change the oil for sure, it's easy and cheap to do.

 

To answer your earlier question, the two bushes are external and connect the extended selector mechanism to the gearbox. I expect the box would need to be dropped a bit to get access (did mine while it was off the car, so was easier). If there's anything more than a few mm play on the selector mechanism it would indicate they are worn

I wasnt a wimp last time i checked, but that was a while ago. Ive worked on dozens of cars before and have a mk3 Supra i put Chevy v8 into. Ive never had anything to do with gearboxes before, they do scare me a bit. I don,t mind taking them out but taking them aparts for the pro's

 

I'll have a look at the selector to check the play. I reckon its a similar design to the one i took out of my brothers M5 recently, he said thats a Getrag too

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Does that mean you could use an M5 box in a Supra, or can you not change the bell housing

 

Just had a look, seems the answer is not easily as much of the specifications are different, so not exactly the same box as I had thought!

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My brothers an M5 nut and has 3, 2 of the last 50 made and one scrap one for parts. 2 are 6 speeds and ones a 5. The box i took out for hims in his garage so il have a quick look when im over there next. Your right though, probably very different internally, and just share a similar outer case.

 

Your knowledge of cars is excellent sir

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Don't rule out the selector mechanism, as the rubber bushes gets old they do not keep everything lined up the way they should be. Everything has to align perfectly or it feels like you are mixing concrete with a spoon. I have tried both solid bushes and the OME ones from Mr T. No difference in IMHO so I kept the new OME.

 

My M3 gear box is a Getrag it is much smoother on gear changes. It has a completely reversed selector pattern, which can be interesting when going from one car to the other.

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Thanks Terminator, il get under it in the next couple of weeks and have a look. Should there be any play at all in the selector mechanism and is there a tolerance for measuring if so.

I bet the Supras more fun than the M3 though

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Thanks Terminator, il get under it in the next couple of weeks and have a look. Should there be any play at all in the selector mechanism and is there a tolerance for measuring if so.

I bet the Supras more fun than the M3 though

 

As far as I know, there should be zero play in any mount point, all are solid bar the bushed ones, which should be play free. Just a fraction of a mm, will throw our the accuracy once it get multiplied by the leavers.

 

Regarding the fun factor, you are not wrong;)

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