Gearbox and final drive noise

26 posts / 0 new
Last post
Packers
Offline
Last seen: 5 days 1 hour ago
Joined: 26/06/2020
Gearbox and final drive noise
Hi all Be gentle with me here... But... Is the noise from the box and final drive always very prominent in a seven? I took my 2017 310r up the road for the first time and was mildly surprised at how prominent the noise was. This is compared with an aluminium Cobra in which you weren't terrifically far from the driveline either. Due to covid I didn't test drive it before buying so it's the first time I've heard it. It's a long time since I've been in any others and I just can't remember! Cheers Paul
ChrisC
Offline
Last seen: 9 hours 54 min ago
Joined: 17/04/2014

In general yes, the noise is normal.  Each car seems to be different, so some are quieter than others.  

Wrightpayne
Wrightpayne's picture
Online
Last seen: 2 min 37 sec ago
Joined: 17/04/2014

Ear plugs are essential!!

ScottR400D
Offline
Last seen: 21 hours 13 min ago
Joined: 23/08/2015

It seems to range between mild and unacceptable, depending on what kind of noise it is. Though IME its more the diff than box.

Which box is it? 

Packers
Offline
Last seen: 5 days 1 hour ago
Joined: 26/06/2020
Cheers both. Yeah the cobra was extremely loud and I was rubbish at wearing ear plugs... Used to feel it days later. Good to know its broadly typical.
Packers
Offline
Last seen: 5 days 1 hour ago
Joined: 26/06/2020
Cheers both. Yeah the cobra was extremely loud and I was rubbish at wearing ear plugs... Used to feel it days later. Good to know its broadly typical.
Packers
Offline
Last seen: 5 days 1 hour ago
Joined: 26/06/2020
17 310r so presume mx5 and bmw diff
SM25T
SM25T's picture
Offline
Last seen: 1 hour 23 min ago
Joined: 17/04/2014
Hearing protection is essential in a Caterham. Not just the obvious, but induction roar, wind noise, tyres, etc !
Petethediesel
Petethediesel's picture
Offline
Last seen: 32 min 51 sec ago
Joined: 10/12/2017

My 2018 360  with a Titan/BMW LSD has been fairly noisy from new/ It's been confirmed as "normal" by the gents at Oakmere.

  Following the advice of Road and Race transmissions, Last week I sucked out the Caterham supplied Motul 75/140, and re-filled with 800cc of R&R's own 90 grade LSD oil. The noise level is significantly lower  ( at a guess 80 percent) and it feels smoother in operation. Yes, it's still a 7 with plenty of mechanical noise, but now less pronounced.

  R&R said that the BMW diff was originally designed to use a 90 grade oil, though clearly with a plate LSD you need the appropriate additives. They indicated sales of several hundred packs of their own oil so perhaps others can advise their findings.

   

  

Pete C

K7 VCT
K7 VCT's picture
Offline
Last seen: 42 min 50 sec ago
Joined: 17/04/2014
Only use there oil in my BMW lsd, compared to previous open diff of BMW, noise is different but no louder. Packers, wear in the country are you ? Could compare my 310 if near and covid-19 disappears......

Orange is my new black

Ballistic orange 310s
Packers
Offline
Last seen: 5 days 1 hour ago
Joined: 26/06/2020
Thanks Peter!