Termignoni Carbon Refurb?

duggymcdougal · Nov 22, 2020

Hi all,

Has anyone successfully refinished/refurbished the carbon tip on the HS Ti Termignoni muffler? Is it just a matter of drilling out the rivets, cleaning up and re-clearing?

Keen to hear from anyone who has done it and how it turned out?

Cheers,

Araitim · Nov 23, 2020

That carbon end piece, it won't be easy to save that. Looks like the fibers and the epoxy seperated due to heat, delaminated. Heat caused by baffle packing loss. You could try sanding it down and then building up the lost epoxy with some high temp clearcoat or even coating it with a high temp 2 part epoxy, sanding it smooth then clear coating it. You easiest options are to either contact Termi and buy a new end tip or sanding it down a bit and painting it black or something.

Tron · Nov 23, 2020

What happen to your pipe that caused the carbon fiber to react like this? Genuinely curious as I have the same pipe and want prevent this from happening. Thx!

duggymcdougal · Nov 23, 2020

Tron said:
What happen to your pipe that caused the carbon fiber to react like this? Genuinely curious as I have the same pipe and want prevent this from happening. Thx!

It was like this when i bought the bike a few months ago. My guess is the bike has lived outside for sometime and this part has been damaged by sun exposure.

kuksul08 · Nov 23, 2020

Time to spraypaint it black lol

gatdammit · Nov 24, 2020

My Akra has a very similar design and aside from some coking at the noisy end, CF looks fine. For the price and touted quality of the
Termi kits, I'd write the company. Assume you'll get the standard blocking and dodging, but, probably better luck shaming Termi into a fix than a lesser brand

N4teTheGreat · Nov 24, 2020

Interesting, I have the same pipe and have noticed the color of the CF changing a bit around the tip. Presumably due to heat, hopefully it doesn't de-laminate like this.

Araitim · Nov 24, 2020

Tron said:
What happen to your pipe that caused the carbon fiber to react like this? Genuinely curious as I have the same pipe and want prevent this from happening. Thx!

Usually caused by the packing between the core and the outer can decentegrating over time. Over time these are supposed to be repacked. Parts blow out the end faster than others and then the hot exhaust gasses are hitting the back side of the end can. When they are carbon fiber they won't live long in this working environment. To prevent this you need to make sure you repack your silencer from time to time . Keep in mind, the tighter you pack around the core the louder the exhaust will be initially but it will also make slightly more power. Packing loosely will keep the mellow tone but need packing more often.

N4teTheGreat · Nov 25, 2020

Interesting, I've known about repacking being needed for dirt bikes and the exhausts seem to be designed for it (my FMF has allens bolt to remove the silencer cover) seems like this isn't commonly done for street bikes and as far as I can tell with the Termi you'd need to drill out the rivets to take it apart.

Araitim · Nov 25, 2020

N4teTheGreat said:
Interesting, I've known about repacking being needed for dirt bikes and the exhausts seem to be designed for it (my FMF has allens bolt to remove the silencer cover) seems like this isn't commonly done for street bikes and as far as I can tell with the Termi you'd need to drill out the rivets to take it apart.

That is correct. You have to drill the rivets. Termi sells a kit I think but you can just get regular rivets and reuse the strap if you are just repacking. Alot of dirtbike pipes use rivets too. I had a two brothers, a big gun and an fmf that had rivets. Friends yoshi pipe on his Drz has rivets. My old MRD exhaust used allen head bolts into Ann aluminum end tip. That was a nice system to maintain.

N4teTheGreat · Nov 30, 2020

Good to know, I'll have to source a kit so I'm ready. I need to do the pipe on my DRZ as well, it loud AF. I'll probably drop in the quiet insert at the same time, hopefully that doesn't mess up the jetting.

N4teTheGreat · Jun 30, 2021

Gonna say this pipe was not intended to be serviceable. Due to the shape of the sleeve and the size of the inner core, there's not way to get the sleeve off. I did find almost no hi temp sealant around the tip and you can see a lot of soot suggesting exhaust blow by which is what I suspect was heating up the carbon fiber tip and causing it to discolor. I'm going to see if I can get this back together and slather a bunch of sealant around the CP tip and I'll just run it. Of course, there are now some drilled out rivets rattling around inside the pipe which will probably not be audible over the exhaust note anyway, but I'll know they are there, reminding me of this failure.

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Termignoni Carbon Refurb?

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