Silencer repacking

Tharrell · Post by **Tharrell** » February 1st, 2010, 10:32 am

Someone let me know if I can use regular insulation to repack my silencers?
Thanks

KE 336 · Post by **KE 336** » February 1st, 2010, 11:06 am

You can but it won't last more than a couple of rides before you need to repack it.

Tharrell · Post by **Tharrell** » February 1st, 2010, 1:30 pm

What is the difference in materials? I mean, the manufacturers have to get it somewhere?

KE 336 · Post by **KE 336** » February 2nd, 2010, 5:30 am

I haven't gone as far to study what the material difference is, just tried it myself and found it won't hold up. I've also tried using some ceramic fiber used as insulation in furnaces thinking I'd found some long life packing. It is indeed long life but the problem is it doesn't deaden the sound level for shit! Since then I just go to the bike shop once a year or so and pay the $8-10 for the stuff they sell for the job.

Tharrell · Post by **Tharrell** » February 4th, 2010, 10:56 am

8-10 dollars? Holy crap! I was looking online, everybody wants 30-60!
That's the only reason I asked. Hell, I'm just gonna hit the local shop.

seanmx57 · Post by **seanmx57** » February 4th, 2010, 11:24 am

2 words

Silent sport

Lasts at least 5X longer than the sheet stuff that you pay $8 for and is quiter. It's twice the price and worth it. Regular fibreglass is not rated for the temps that exhaust silencers see and it just blows it apart.

gregrobo · Post by **gregrobo** » February 4th, 2010, 2:59 pm

its oil saturation that kills most 2 stroke packing so get your fuel and oil mixes right aswell

BrianPaul69 · Post by **BrianPaul69** » April 14th, 2012, 11:56 pm

I just found this thread and honestly I never repacked a silencer until I got my 84 CR500. It would have been better if someone just stuck an old shop rag in there compared to what came out.

Anyway, my question is how much packing do you put in there? It's got the oval DG silencer on it with the pipe offset to the top. I would think you wouldn't want to really pack it tight because there wouldn't be any space for the sound to be deadened. It would be sort of packed solid I guess is what I'm trying to say.

2strokeforever · Post by **2strokeforever** » April 15th, 2012, 12:25 am

its oil saturation that kills most 2 stroke packing

oil comes out there no matter how you jet it, if you mostly trail ride it will be the oil that kills it
if youre holding it pinned then you will need some high temp stuff, cause the pink stuff will burn out

i use regular pink insulation, yesterday i finished off the last of a full bale of the stuff

BrianPaul69 · Post by **BrianPaul69** » April 15th, 2012, 12:36 am

So with that said how much do you pack in there? As much as you can stuff in? Is there a such thing as too much??

Gmbond · Post by **Gmbond** » April 15th, 2012, 9:06 am

I just started using the lexx packing from rockymountainatv which is CHEAP

$5.99 a package!!!

One package will do a cr500 Fmf Q silencer with leftover, it seems to quiet really well and lasted a season of trail riding without blow out.

And at $5.99 a package it's cheap enought that you could do it multiple times a year.

I was using moose packing which is $10 but isn't quite enough in one package for a 500 silencer, however I used it for years and was quite happyK

NightBiker07 · Post by **NightBiker07** » April 15th, 2012, 9:46 am

I think home insulation fibers are much finer than the packing fibers, so the heat kills them really fast. Just my theory.

BrianPaul69 · Post by **BrianPaul69** » April 15th, 2012, 10:41 am

I ride maybe two weekends a month so the cheap stuff would probably work fine. Here is what I found.

1. FMF 2 stroke packing

http://www.ebay.com/itm/280854112719 ($11.20)

http://www.ebay.com/itm/270939938277 ($19.15)

2. MSR Silent Sport 450 Gram ($29.72)

http://www.ebay.com/itm/390403309970

3. Fly Racing ($7.99)

http://www.ebay.com/itm/130680842487

4. Moose Knuckle Racing ($9.49)

http://www.ebay.com/itm/130657559627

5. Universal Fudge Packing ($17.25)

http://www.ebay.com/itm/280814061983

There are also a few more random sellers that have some other packing to choose from.

Nodge · Post by **Nodge** » April 15th, 2012, 1:52 pm

I rarely have a silencer long enough to blow it out.
I will crash.
Usually it's the next ride after I put on a new rear fender or decals.

Post by **AlisoBob** » April 15th, 2012, 2:28 pm

BrianPaul69 wrote:I4. Moose Knuckle Racing

5. Universal Fudge Packing

Hahahahahahahahhhaa!

BrianPaul69 · Post by **BrianPaul69** » April 15th, 2012, 4:37 pm

AlisoBob wrote:
BrianPaul69 wrote:I4. Moose Knuckle Racing

5. Universal Fudge Packing
Hahahahahahahahhhaa!

Well at least someone is paying attention. LOL..... Just noone wants to come forward and say just how tight that shit needs to be packed. I did a little redtubing and seems everyone likes to pack it in their can as tight as they can get it.

Post by **AlisoBob** » April 15th, 2012, 5:52 pm

Wrap it tight, give it a wrap of masking tape, slide it in....

BannedCR500Riders.com

Silencer repacking

Silencer repacking