Rear Air Intake - Filter

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O

Oldmans Trophy

Member
Hi again ..... just doing a thorough service. At the rear of the main airbox atrached to the carbs are left and right secondary boxes .... when you remove the pipe from the back of them theres a removable canister containing a sleeve ...... mine had what appears to be a decayed foam filter in each of them. On the Triumph diagram they're shown as number 10 and 11. Tried to get these filter but no success ... any ideas ?
 
The diagram is attached WOT_304695-0-2.png
 
Those are parts of the snorkel going into the airbox. The air filter is in the airbox on my Trophy (and yours) and those snorkel bits contains 'silencers,' that's what the foam is for, sound damping. The air filter in the airbox is not meant to be replaced the whole airbox with filter is replaced, the snorkels are the same, they are meant to be replaced as a unit. K & N does make a filter that can be fitted to the airbox with a little trimming, but the snorkels aren't included. Your Triumph dealer might be able to source those pieces if you want to change them, but there's no benefit to performance in the motor.
 
atomsplitter said:
Those are parts of the snorkel going into the airbox. The air filter is in the airbox on my Trophy (and yours) and those snorkel bits contains 'silencers,' that's what the foam is for, sound damping. The air filter in the airbox is not meant to be replaced the whole airbox with filter is replaced, the snorkels are the same, they are meant to be replaced as a unit. K & N does make a filter that can be fitted to the airbox with a little trimming, but the snorkels aren't included. Your Triumph dealer might be able to source those pieces if you want to change them, but there's no benefit to performance in the motor.
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Cheers ...... thanks for taking the time to help - it's much appreciated!
I'll just reassemble them without the sound dampening foam inside the sleeves...... I have the slighly noiser Daytona exhausts fitted so the bikes not quiet anyway.
 
Welcome. I took my 98 Trophy for a spin Saturday and was reminded how peppy it could be (not like my other 1200's but still good). Think I need to make time for a Forestburg run now that it's warming up. Let us know how it runs when it's back together.
 
atomsplitter said:
Welcome. I took my 98 Trophy for a spin Saturday and was reminded how peppy it could be (not like my other 1200's but still good). Think I need to make time for a Forestburg run now that it's warming up. Let us know how it runs when it's back together.
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I also had an issue with fuel filling the carbs n pooring out near the air box ..... Duh - petcock in prime ..... its had a couple of months to fully dry out so this weekend I'll put tank back on n give it some fresh fuel with lots of carb cleaner in it. May help, but I'm sceptical about the stuff doing much if anything. These warmish days have been nagging at me to get out on the road too.
 
Just to let you know when I bought my Trophy it was a non runner. The list of parts is very long and distinguished to get it road worthy. The best bet for doing the carbs 'in situ' is Sea Foam cleaner. There are pros and cons but the stuff will clean the jets, it won't do anything for synchronization, leaking diaphragms, clogged air mix ports, but where gas goes thru the carbs it will clean that up nicely. If you take the carbs out to clean them (it's about a days worth of frustration) make sure you clean the idle mix passages and reset the idle mix screws back to original position. It also won't hurt to replace the carb slide diaphragms while you're in there. You can test them for leakage still on the bike. Below is a vid for one way of doing it, I prefer to raise the slide then cover the hole and see if the slide sloooowly drops. If it goes right back to the bottom, it needs replaced.


View: https://youtu.be/9zCBSBINtys
 

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