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Hi All,
 
New to TR ownership and the register that seems very informative, so a cry for help to the community.
 
I now have a 72 TR6 that I've waited years to own and having done a few months of maintenance and upgrades am now a bit stumped.
I have a regular tapping noise that is most noticeable from inside the cabin, increases as the revs rise and whilst difficult to hear with the bonnet up due to fan noise etc it is best heard by putting your ear into the drivers foot well.
It appears to be coming from low down in the engine,best described as a tapping noise and continues when the clutch is depressed.
I have read numerous discussions regarding engine noise but not specific to my issue.
Any direction will be most appreciated.
 
Phil
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Hi Phil,

Could it be the speedo cable near the angle drive? That is on the drivers side. Just a suggestion.

Kind Regards,

Dave from Spain

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Hi Phil,

is it while driving or with car standing still?

the latter would rule out tge speedo angle drive.

Does the tapping change with temperature? A stehoscope (they are cheap) or long screwdriver to your ear is a good aid.

Waldi

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Disconnect the vacuum pipe to the brake servo and plug the pipe then see if it disappears. Dont drive the car as the brake pedal will be solid, if the nose disappears its the one way valve in the servo. Dont laugh its known to happen and gives a tapping noise as you describe from the drivers foot well.

Stuart.

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Thanks all,  I have disconnected the speedo and Rev counters so not them.

The noise is apparent when stationary and driving and is there when the engine is cold and warmed up.

I will investgate the brake servo as Steve suggests.

Great to have access to such exsperience.

Phil

 

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I too have 1972 CP, rebuilt the engine myself after professional machine shop work, all new or reconditioned components, everything that can be balanced has, all clearances & tolerances checked and double checked...…..I can hear a tappety-ticking noise at fast idle speed. The engine was recently finely tuned by a very very well renowned mechanic (ex Triumph), he commented that the engine was superb, he couldn't hear anything, says there's nothing wrong with it. Perhaps not just our eyes play tricks on us?

Richard.

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Morning Gents,

Brake servo this afternoon as Stuart suggested followed by more investigation with a stethoscope. I don't believe its the metering unit as wrong location and fitted a new SS exhaust a couple of weeks ago. Perhaphs Richard is right but its a niggle i'd like to get to the bottom of. I'm a new owner...perhaps spending too much time in the garage fettling.

Thanks to all.

I'll post my finding if and when I get it resolved.

Harry I see you are not far from me, any recommendations of a local specialist who could have a gander.

Phil

 

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Hi Phil. 

I too have a similar noise and have had for the last couple of years on my TR5. Tappets were adjusted a week ago and although a couple were a bit tight the noise remains. I am working on sorting a diff leak and G/box leak with a non functioning overdrive at the moment, so my clicking/tapping noise is further down the to do list.

Fiddling with things seems to be the norm with these lovely cars, but going out for a driving blast just puts a smile on my face, whenever I go out. The forum is a great place to get advice, sometimes the guys contradict each other a bit, but all have much more knowledge of the cars than me and are a great help. If I find out what is causing my noise, I will post here. Good luck sorting it.

Mike

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I recently had a similar issue and went through everything including dropping the sump. After replacing or checking everything on a newly built engine there was nothing left but the cam. I stupidly got my original CP cam re- profiled. The owner of the well known cam manufacturer was surprised his company had agreed to re-profile it. On checking there was considerable run out on the lobes. New cam at cost and all resolved. Pull the cam and get it checked!

 

Colin

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Update re engine noise.
 
Stuart you obviously know your stuff, did as suggested re the vacuum pipe to the brake servo and the tapping noise stopped. Reconnected to make sure and back it came.
I must put say a big thank you to all on the register that took the time to suggest possible causes. The engine sounds and pulls well but having now got my ear tuned in I think I will check the tappets for gap and lift as Roger suggested....time to put a heater in the garage.
Back to the brake servo, being a relative novice I have referenced the manual and can see that the non-return valve is located front bottom of the unit appears to be plastic with two flat side. Haven't attempted to remove as yet but assume this will unscrew and replacement pretty easy when I locate the part , will check Moss and Rimmers.
 
Thanks again.
 
Phil
 
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43 minutes ago, Phil H 4 said:
Update re engine noise.
 
Stuart you obviously know your stuff, did as suggested re the vacuum pipe to the brake servo and the tapping noise stopped. Reconnected to make sure and back it came.
 

I'll try that too! My non-return valve is the Land Rover type screwed into the rear throttle body.

Richard.

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Hi Phil &  Richard,. Just FYI, I had same servo non-return valve rattle too. I have the early bayonet style plastic unit. Found a replacement, was exactly the same!! So then found you can buy the metal non-return valve that goes into the inlet manifold of the PI. Once that was fitted too (so two valves in series) all has been quiet ever since. 

Hope that helps, cheers, J.

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Hi Richard,
 
I don't believe its the valve rattling , but certainly isolating it has cured my issue, Stuart can probably best advise on the reason for the tapping, way beyond my understanding. 
Lots of noises going on ...I think the metering unit is also making a fainter tapping like Harry's but that's for a different weekend.
If anyone has a surplus plastic bayonet valve 516907 I would be very please to hear from you, or ideas on an adaption rather than getting a new solenoid.
 

 

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The usual cure is one of these fitted in the vacuum pipe https://www.ebay.co.uk/itm/TRIUMPH-MINI-MG-FORD-ROVER-JAGUAR-Vacuum-Tank-Non-Return-Valve-UK-Made/142101676018?hash=item2115eb7ff2:g:rawAAOSwo8hTnDLr:rk:7:pf:0

The reason for the ticking is the original valve has failed and its rattling open and shut in time with the engine stroke.

Stuart.

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