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Triumph TR6 - Sound??

During my weekly Friday "go fetch dinner" drive (also an excuse to drive the TR), I noticed a new sound coming from underneath. It sounds like a gurgling rattle. It is present when car is in nuetral and climbing between gears. Not present while car is motionless with clutch down. (??) any thoughts(??)
MV
Marcello

Clutch lever return spring missing or broken?
Tom

CLutch pin?
Don
DON KELLY

mmm...sounds like clutch related then ??...
Marcello

How serious on either?,..in other words can i drive it to my shop or tow it?
Marcello

Marcello, what's mthe worst that will happen? It will break and then get it towed, so drive it and enjoy.
Don
DON KELLY

Are you saying you hear the sound only when the clutch is ingaged in neutral and goes away when you put the clutch in? If that is it then it sounds like the input bearing in the transmission being noisy. Mine does that too but I'm not going to worry about it now.
skikir

Eugene,
Its more like a rattle from underneath. It appears while idling (not in gear) and disappears when engaged in gear (motionless), then reappears while(moving)accelerating in gear.
Marcello

Marchello,
Sounds like exhaust pipes to me. When you get on the gas the engine will twist to one side, restricted by the mounts, taking the exhaust pipes with it. It may have enough movement for the pipe to contact/rattle against the chassis.
Hope this helps,
Steve
Steve Crosby

Marcello
You said: "It appears while idling (not in gear) and disappears when engaged in gear (motionless), then reappears while(moving)accelerating in gear."

Engaged in gear..motionless..clutch is in..CORRECT?? If this is true, then then the difference is that the clutch is depressed....this assumes I am correct in what you are saying.
Does the sound come and go if you are motionless and just depress and release the clutch pedal several times?

If you get the sound when motionless and driving it may be the throwout bearing. The bearing is just sitting there spinning in both these situations but has pressure on the bearing when clutch depressed. BUT....I would think a bad bearing would make more of a grinding noise rather than a rattle.
If it is the throwout bearing...well sorry to hear that lad.
Rick C
Rick Crawford

Rick,
I do get some grind in 1rst and Reverse. Why the sorry? is it major??????
Marcello

It's just a pain to pull the tranny, Marcello. The clutch pin is probably your aggravation, and you still have to pull the tranny, sorry.
Tom

Great,
There is a added task to my winter "to do list"
Marcello

1. At rest, Clutch out, in neutral do you get the sound?
2. At rest, Clutch IN, in neutral do you get the sound?
3. At rest, Clutch IN, in in gear do you get the sound?
4. At rest, Clutch IN, in neutral rev the engine a little and then put it into gear. Does the sound go away as the transmission go into gear?

If the sound goes away as you put it into gear then I would say it is the transmission input shaft bearing and or the transmission counter/lay gear bearings. The idea being is if the noise changes when it goes into gear the only thing that changes is the clutch plate, input shaft bearing and lay gear stop turning but the throw out bearing is still turning.

If you get grinding going into gear and revers then the clutch is not disengaging. Could be master/slave cylinder. Check fluid. If fluid good then could be fork pin but that should not make sound. If the tranny comes out replace pin with hardend steel type just because. At the same time drill hole out the bottom of the fork pin hole in the fork. If the pin breaks you can drive the broken end out, otherwise you'll have to cut the saft to get the fork out because the pin comes out toward the tranny - away from the you can get at it.
skikir

Skikir,
Can I convince you to move to Canada????
Marcello

Not unless I can take my guns.
skikir

Marcello
Now that we know Skikir will not be moving to Canada what are your answers to his questions?
Rick C
Rick Crawford

Rick, Skikir I'm certain must mean grease guns. What do you think?
Cheers
Pete
Pete Russell

I don't know much about the TR6 but if it's like my TR3A and this winter when you pull the gearbox, make sure that you change the pilot bearing too. That's the permanently oiled bronze bushing in the rear end of the crankshaft. On my TR3A, I have to pull off the flywheel to change it. I had 70,0000 miles on the last one and after I changed it, it shifted a lot smoother. It aligns the front end of the input shaft to the gearbox. I could see the wear inside the old bushing after I took it out.

Don Elliott
http://www.britishcarforum.com/ubbthreads/photopost/showphoto.php?photo=1919&sort=0&page=0&sortby=&sorttime=&sortdir=
Don Elliott

Pete
Their constitution is in direct conflict to what the gun cops (big brother) think(s)
up here.

There has been a lot of guns in Canada "go underground".



Not trying to open a can of worms
Rick C


Marcello
So now I suppose you want me to come down and pull the dash and your tranny:)
Rick Crawford

Folks sorry for the long delay on this response.

1. At rest, Clutch out, in neutral do you get the sound? YES
2. At rest, Clutch IN, in neutral do you get the sound? INTERMITTENT
3. At rest, Clutch IN, in in gear do you get the sound? NO
4. At rest, Clutch IN, in neutral rev the engine a little and then put it into gear. Does the sound go away as the transmission go into gear? YES

Does this help the diagnosis?
Marcello

Input shaft bearing, I guess. Your clutch seems to be dragging just a bit, so when its in gear the drivetrain's loaded slightly, preventing the sound somehow. The tranny's not turning, so as you explain it, the sound only happens when there is movement of the input shaft. While the tranny's out, check all the other suggestions here. Or get underneath and look and listen for the source, maybe it is just a harmonic rattle somewhere. I suppose it could be in the shift lever, long shot.
Tom

Thanks Tom,
I would also guess input bearing. Going to be a long winter. If I am going to mess with it I might as well at doing a 5 speed now. What do you think?
Marcello

I think you're planning ahead before you know what you're facing for sure. Maybe it's just the little bushing inside the crank like Don said. Maybe it's just the exhaust rattling. If it's a simple fix, there's no way I'd be forking out for a new tranny of any kind. But if that's what you want to tell your wife...

Run the darn thing over to the nearest TR expert and get an opinion. No matter what the problem is, it should be able to be solved in a week or 2 at the most. There might even be a nice day or 2 left this year in the northern reaches.
Tom

This thread was discussed between 30/07/2005 and 31/08/2005

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This thread is from the archive. The Live Triumph TR6 BBS is active now.