caravan_monster

I took some photos to show how I went about cleaning and repacking I cut the windows here: and here I used the drill (with depth gauge) and hacksaw instead of cutting disk to cut the windows, to avoid damaging the perforated tube inside. A hook was made from stiff wire to pull out all the old packing. Once the packing was removed, I heated the inside of the perforated tube with the gas burner. The oily gunge caught fire and was left to burn out. It was then easy enough to shake the soot out and get everything reasonably clean. It was then repacked, taking care to get packing into all the corners: Then a paper template was used to get the right shape for the plates to go over the windows. Silicone and pop rivet: Hope this helps

Good to know it worked on the 348 - my 315 is similarly noisy as it is. What function does the middle box perform ? Is it just an additional silencer, or does it manipulate the exhaust pressure waves a bit like an expansion pipe on an 2t enduro or motocrosser, to give the desired engine characteristics ? When I cut windows into the 315 middle box, will I just find a perforated tube and packing, or are there other parts in there ?

Hi, I can't find anything about the 'window' method with the search facility. It sounds like a better option than cutting the seams because it avoids any potential misalignment problems, but does anyone have any info. about best placement of the window ? Judging from the weight of the component, I'm guessing it might be complex inside and I want to avoid unnecessarily damaging anything when I open it up. Would a pop riveted and silicone sealed piece of aluminium over the windows be viable repair, with future cleaning and repacking in mind, or does it need to be welded ? Is Silent Sport packing different from the normal stuff ? Not heard of it before. TIA for any advice, Tom.