Noisy manual gearbox :: Triumph Torque

Triumph Parts Sign up for our Newsletter Rimmer Bros

Welcome, Guest.
Please login or register.
Noisy manual gearbox
Forum Login
Login Name: Create a new account
Password:     Forgot password

Triumph Torque    Cars    Stag  ›  Noisy manual gearbox
Users Browsing Forum
No Members and 9 Guests

Noisy manual gearbox Print
1 Pages 1 Recommend Thread
Dibnah
May 16, 2017, 2:30pm Report to Moderator

Posts: 4
Posts Per Day: 0.00
Afternoon All,

Have just completed resurrecting a Stag with MOD gearbox, Whining noise from 'box in 1st, 2nd and 3rd, also some whining in neutral;  fine in 4th gear. Hasn't dropped out of gear in 100 miles so far.

Floor carpets are missing, as is rear seat, so that won't help things. Oil was changed to "TRIPLE QX EP 75w90 Transmission Fluid Fully Syn".

I plan to try an additive, but I'm concerned about creating issues with the overdrive. Comments and suggestions please!

(100 miles "testing" today, I'd forgotten what an involving car the Stag is)
Logged
Private Message
StagNL
May 16, 2017, 2:33pm Report to Moderator


Posts: 1,365
Posts Per Day: 0.46
If not in direct drive, i.e. 4th, then something that isn't involved with that gear may be the problem.  Layshaft isn't in use in 4th but is in 1st to 3rd.
It may help to start there.

Julian


Triumph Stag, Man. OD, RHD, Datsun 280ZX halfshafts and Subaru Legacy/Forrester R160 differential, Revolution 15" alloys. Fully rebuilt 2014.  
Triumph 2500TC, LHD, Autobox, PAS, Sunroof, Cosmic alloys.
CT Holland member.
Logged
Private Message Reply: 1 - 8
poppyman
May 16, 2017, 6:00pm Report to Moderator
Club Member
Posts: 58
Posts Per Day: 0.28
Quoted from StagNL
If not in direct drive, i.e. 4th, then something that isn't involved with that gear may be the problem.  Layshaft isn't in use in 4th but is in 1st to 3rd.
It may help to start there.

Julian


i agree, sounds like layshaft bearings, noise will probably go when clutch is depressed when stood still?
ps, welcome to the forum
Logged
Private Message Reply: 2 - 8
Richard B
May 16, 2017, 10:30pm Report to Moderator

Richard Brake
Moderator
Administrator
Posts: 13,256
Posts Per Day: 2.77
I was always told, don't add things like Slick50 to an overdrive, it causes the O/D clutch to slip.


Surrey AO and Triumph Hoover, Location: Guildford - Surrey,
Spitfire 2.5PI - 1967 having surgery, PI Saloon - 1969 RBRR x 3, PI Estate - 1969 (to restore), Stag - 1971 RBRR x 2,
PI Saloon MkII - 1971(stalled project), Sold some cars!  

Daughters own: Herald 1500 1961, Herald 1500 Coupe 1962, Dolomite 1300 1976, Herald 13/60 Estate 1970
Logged
Private Message Reply: 3 - 8
59TR3driver
May 16, 2017, 11:04pm Report to Moderator

Posts: 6
Posts Per Day: 0.00
Another possibility is the small bearing between the input and output shafts.  It only turns when not in 4th gear; and was making noise (worse than just a whine) in my first Stag when I bought it.
If that is the problem, be sure to check the "dowel bolts" that locate the gearbox to the flywheel housing, and the dowels that locate the housing to the rear plate and the rear plate to the engine block.  If any of those are missing or have the wrong piece installed, it can allow the gearbox to be out of line with the crankshaft and put a lot of pressure on that little bearing.  I couldn't find a source for the "dowel bolts" (which have a precision full diameter shank, not the slightly undersize shank found on normal bolts), so I made my own by threading a section of "drill rod" (precision ground steel rod) for nuts on both ends.

I agree about not trying to quiet the noise with additive.
Logged
Private Message Reply: 4 - 8
Dibnah
May 18, 2017, 6:03am Report to Moderator

Posts: 4
Posts Per Day: 0.00
Thanks for the quick replies. To add another variable, the engine is an RV8, so the adapter plate to the bellhousing could create a risk of misalignment. My understanding is that older manual boxes for Stags are noisier than newer boxes. The car is 1975, but the age of the gearbox in unknown.

The whining noise in neutral does disappear when I dip the clutch.

I probably need to fit the carpets to see if that helps.
Logged
Private Message Reply: 5 - 8
Toledo Man
May 18, 2017, 6:14am Report to Moderator


Posts: 3,200
Posts Per Day: 0.64
Additives in an OD box is a definite no-no. Just use a decent quality gearbox oil of the correct spec.


Toledo Man

HCR 2006 & 2007 finisher
1972 Dolomite 1850 auto (The rolling restoration)
2008 Citroën C4 Grand Picasso 2.0 HDi Exclusive (the modern)
Former stable of 5 Acclaims, 1 Toledo, 2 1500fwd, 1 1300fwd, 1 Dolomite 1300 & 1 Dolomite Sprint (that's just the Triumphs!)
I've still got some parts for sale...
Check out my Blog on http://triumphtoledo.blogspot.com/

"I can help you stop smoking in bed. Buy a waterbed and fill it with petrol." - Bob Monkhouse OBE (1928-2003)
Logged
Private Message Windows Live Messenger Skype Reply: 6 - 8
Pete Lewis
May 18, 2017, 6:22am Report to Moderator

Tssc Herts and Beds A.O.
Club Member
Posts: 3,274
Posts Per Day: 0.78
Yes ,  most   certainly input shaft bearing or mainshaft tip  
if box has been stood up on its clutch hsg , you get debris drain into the input bearing.

its one of the first to suffer if oil has been low

layshaft and spigot is not as troublesome as the small chassis box  and generally more bullet proof.

pete


1964 1600 Vitesse 6 Cactus and Black , now  sold
now have T2000   Mk2 saloon in French Blue/grey trim  been stored without running since 1997
now has power steering
location  Luton
Logged
Private Message Reply: 7 - 8
nang
May 20, 2017, 3:59am Report to Moderator

Posts: 2,288
Posts Per Day: 0.69
Don't know....recently had my 2500 box and J type o/d overhauled, box was very noisy. Main problem was a badly worn layshaft. Nice and quiet now.
Tony.


If all else fails-Read the Instructions! ��Wairoa
New Zealand

1976 2500TC (converted to S spec
1979 2500 S.
1999 BMW 2800 cc Z3 Convertible.
 
Logged
Private Message Reply: 8 - 8
1 Pages 1 Recommend Thread
Print

Triumph Torque    Cars    Stag  ›  Noisy manual gearbox

Thread Rating
There is currently no rating for this thread
 


Powered by E-Blah Forum Software 10.3.5 © 2001-2008

Latest Blogs-
Steve Weblin

26th May 2017 3:11pm gmt
1920's Standard Owners Manual and Parts List
Theo Boonen

24th May 2017 11:13pm gmt
FHC resto nr. 54; More pedals & boot-lid
more blogs...
Next Group Meetings-
Nottingham Monday 29th May 19:00
Essex Tuesday 30th May 20:00
Cheshire & Staffs Wednesday 31st May 19:30
Coventry & Warwickshire Wednesday 31st May 19:30
Northern Ireland Wednesday 31st May 20:00
Wessex (Bristol & Bath) Thursday 1st June 20:00
Pendle & Pennine Friday 2nd June 20:00
South London & West Kent Sunday 4th June 20:00
Cambridge Monday 5th June 20:00
Gatwick Monday 5th June 19:30
Hull & East Riding of Yorkshire Monday 5th June 20:00
more local groups...
Upcoming Events-
Bedford Car Club Treasure Hunt
4th June 2017
East Anglian Classic Rally & Run
18th June 2017
CT Warwickshire Scatter Rally
2nd July 2017
Bedford Car Club Summer Treasure Hunt
16th July 2017
Border Raiders Tour
5th-6th August 2017
Bedford Car Club Treasure Hunt
3rd September 2017
more events...
For Sale-

1970 1300 Blue 53,000 miles. unused in dry garage 26 years. No rust plastic still on doors some spares, workshop manual, handbook. Offer for good home wanted. For more information 07547142606 Croydon

Wanted-
I am looking for a 1971 Jasmine Yello TR6 with the license plate number VVC 873J . Would be grateful for a contact number for the owner

Wanted: Triumph Dolomite 1500HL 1-2 pervious owners with service history, any colour considered, a little work being needed is OK.looking for pair of rear outer wheel arch repair panels for Dolomite. For more info contact;Brian Chapman 01306888382 brian.chapman646 @btinternet.com

more adverts...
CLUB TRIUMPH the Club for all Triumphs
© Club Triumph Ltd MCMXCVI - MMXV