Q' for TORs Owners

(Duplicate of Drop in K&N post)

I have puzzling noise at idle and wondered if any other TORs owners maybe have the same noise..

I noticed it the day I fitted the Triumph eliminator and the TORs cans but I keep coming back to the same thoery.. Ill try to describe the problem noise.

Cold start once the high RPM drops and it has a stable idles.. the noise is not constant or sequential more intermitant and just above idle dissapears.

The sound resembles pinging.. piston slap.. water detination.. its a sort of metalic tapping noise..can be heard mainy from behind at the TORs outlet.. The motor sounds sweet with no unusal taps or rattles assocciated that I can hear anyway midway under near the eliminator it can be heard but not loudly..

My only diagnosis so far is some sort of fuel detonation collecting it the center chamber of the eliminator.. sort of excess unburnt fuel ignition happening in the chamber.

The Triumph eliminator isnt' pretty like the staintune unit.. the engine pipe is into this sort of pear shaped chamber.. 2 outlets (1 goes to the lower can) but 1 outlet is tee'd for the 2 top cans..

I have tried various tune maps thinking it was pinging but all maps produce this puzzling metal snapping sound, like listening to a valve snap shut... the sound is not really loud but can be intemitantly heard within the exhaust note in all 3 cans also at normal temp. and sometime its not there at all...... bloody annoying me bikes performance is great

Sorry long explanation guys ..... Any Ideas please

was running tors on my roadster and although I'm a fastidious pain in the arse that hears everything, i gotta say, i don't recall ever hearing what you're describing. sorry mate, but don't know????

ponters said:

was running tors on my roadster and although I'm a fastidious pain in the arse that hears everything, i gotta say, i don't recall ever hearing what you're describing. sorry mate, but don't know????

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Thanks mate it has to be something stupid drives me mad trying to figure it out

ponters said:

was running tors on my roadster and although I'm a fastidious pain in the arse that hears everything, i gotta say, i don't recall ever hearing what you're describing. sorry mate, but don't know????

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You're just no help at all are you ? ...hint...hint

I did run TOR's and had a noise that turned out to be a heat shield tapping at certain revs. It was an easy fix, just had to bend out the shield a touch and all OK.

The heat shield that covers the collector end is notorious for losing a retaining bolt. Check that.

atomsplitter said:

The heat shield that covers the collector end is notorious for losing a retaining bolt. Check that.

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Thanks AS.. I checked but all is secure

Here is a thought. Maybe there is a loose piece inside one of the tors. The noise is maybe transferred to the other pipes as well. If you still have the stock pipes, replace the tors one at a time and see if the noise goes with one of the pipes. A lot of $hit I know.

As I mentioned in the K&N thread and someone else did here check the clearance between the overlap on the heat shield, particularly on the headers as whole you were put in the cat delete you may have changed the gap and the resonance in the exhaust which causes vibration could be just bring the two shields together

Dennis, you're no spring chicken. Maybe you're just hearing things.....