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EVORA 400/410 GEARBOX CHATTER - Engine & Ancilliaries/Gearbox - The Lotus Forums Jump to content


EVORA 400/410 GEARBOX CHATTER


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Hi Guys,

Does anyone of you either own an Evora 400 or Sport 410 from 2017 production or know someone that does ?

If yes could you please confirm (or deny) wether there is no gearbox chatter at low rpm in 1st or 2nd gears ?  (As per a lot of current Evora 400)

The question came from a youtube video, where James from JayEmm is test driving an Evora sport 410 and noticed that there was no gearbox chatter on the manual sport 410 he was driving.

If the answer is positive then I wonder what has been changed by Lotus to manage that

Thanks for your help !

 

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I think mine is less and less noisy with mileage going on.

I did mention this to the dealer when I bought the car, and his comment was, when it stops making the chatter then contact us. I have found after 18 moths of driving the car the sound is there, but

It is normal.

I've had 3 V6 powertrain packages ( Exige V6S , V6 Cup and 410) . The location and package used will naturally product more noise than others installs and if they spent more time with some harmonic tuning they could probably mitigate some of it. My 410 is much better than the Exiges, and the Cup was better than the V6S , so maybe they've improved the install bit by bit.

I've found the best way to help reduce the noise overall is i) never run in a gear higher than 2nd below 2000rpm, ever ....and ii) while running in let it spin freely, never labour the box and see i). Also worth looking across MR2 forums that also use the box for some of their high output installs and try different oils etc.

One thing is apparent from day 1 you need to focus on properly bedding it in , as after that only more soundproofing or earbuds will help. :)

 

Black n gold

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Thanks a lot for the valuable answers and hints !

in my case I heard the gearbox chatter noise while test driving an Evora 400....honestly I can definitely live with it ! This car drives like a dream !

But if there is a small mod to cure this noise I would also do it to make the car just more pleasant ! Definitely not a show stopper for me as I am still negocating with my Lotus dealer !

thanks again !

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  • 2 months later...
  • 1 month later...

Just to add to the topic: My GT430 Sport has the sams noise that I noticed on e.g. a 2016 Evora 400 before. Not better or any way different. Only in 1 and 2 at low rpm.

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My 400 (and previous 350) have the same noise, i had a chat with Matt at Silverstone while the car was with them, it is transmitted through the gearchange cables, I think he said that there had been some changes to reduce noise.

just had the cables adjusted as there was a slight issue changing from 3 to 2, didn't think to see if the noise had been reduced by tensioning the cables.

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It’s a gearbox from a diesel.  Would be surprised if you can reduce the noise through any mods other than more sound proofing.  The noise is less pronounced in the Evora 400 than the Exige due to this reason imho.  

I can put up with it in Exige as usually at higher revs, but it did drive me mad in my Evora S1 which I used as a daily.  Part of the reason I went for Auto in the Evora 400 was no chatter ;)

Previously owned :Exige 380,  Exige 350,  Evora 400,  Exige V6S,  Esprit GT3,  2-11 SC,  Evora S,  Elite 501

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Never heard it in my car but I haven't ever laboured the engine either as that's the worst thing you can do when running in. Plus I didn't buy it to drive it like a minicab!

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  • 2 weeks later...

It’s an interesting subject, sorry I haven’t read any Toyota forums on the subject,  reading the 400 workshop manual, its a three shaft design with both the input shaft are in mesh with the crown wheel, as an educated guess it’s the free play of the non driven input shaft at low revs that causes the chatter.

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Same gearbox as used in the Series 1 Close Ratio cars and all S models.  Only mods for later 400's, 410, and 430 is the fiting of an oil cooling system.

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Hi guys - sorry to revive an old thread but I have this issue on my 2016 Evora 400. My car has the noise through all the gears when below 2500 rpm. Do we think that’s normal? If it’s just an Evora quirk I can live with it but all the other reports only seem to mention the problem in 1st and 2nd gear..

Any helpful advice much appreciated 😊

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I think my 18 reg 400 is much the same.  

There seems to be a fair bit of general noise from the drive train really, but I suppose that's one of the things I like about the car.

It could be quieter at low speeds, but I tend to find that it's more than acceptable at 70 - 80mph, with or without the sports exhaust switched on.

I don't know if it's a characteristic of a supercharged car, but I feel generally that it needs to be run at a slightly higher revs than say a NA or turbo charged car in order for it to feel smooth.

 

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I did mention this to the dealer when I bought the car, and his comment was, when it stops making the chatter then contact us.
I have found after 18 moths of driving the car the sound is there, but doesn’t register with me as much as I drive the car, just got used to it I suppose,

I also have this thing about not labouring an engine no matter what it is, and tend to keep the revs above 2000 rpm and the chatter is quieter by then.
However it does add some mechanical character to the car in an age where NHV is paramount. 

 

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On 18/10/2019 at 10:47, 62dave said:

Hi guys - sorry to revive an old thread but I have this issue on my 2016 Evora 400. My car has the noise through all the gears when below 2500 rpm. Do we think that’s normal? If it’s just an Evora quirk I can live with it but all the other reports only seem to mention the problem in 1st and 2nd gear..

Any helpful advice much appreciated 😊 

I'll PM you

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Thanks for all the advice guys. I think I may get someone to check it over and maybe compare to another car if possible. Messages above are very reassuring though so thanks for taking the time to reply 

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  • 3 weeks later...

Just thought I'd chime in on this thread.  I have a 2017 E400 over here in the states.  I have 3k miles (~5km) and have had the low under 2000 rpm transmission chatter since day one.  It hasn't really changed over time, although I notice it is less pronounced when cold outside.  I'm also totally unsure if it is normal or not.  I've tried to research like crazy but all I can think of is possibly the pilot bearing/throw out bearing as an issue...or maybe it really is just normal.

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On 05/11/2019 at 19:09, ZThang said:

Just thought I'd chime in on this thread.  I have a 2017 E400 over here in the states.  I have 3k miles (~5km) and have had the low under 2000 rpm transmission chatter since day one.  It hasn't really changed over time, although I notice it is less pronounced when cold outside.  I'm also totally unsure if it is normal or not.  I've tried to research like crazy but all I can think of is possibly the pilot bearing/throw out bearing as an issue...or maybe it really is just normal.

It is normal.

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