FMF spark arrestor and the packing thereof

Got questions? We got answers....
Post Reply
User avatar
treelimb
Gold Member
Gold Member
Posts: 142
Joined: 12:13 pm Oct 27 2007
Country: United States of America
Location: Cedar Bluff,Al.

FMF spark arrestor and the packing thereof

Post by treelimb »

Greetings from Alabama The Beautiful.

So with a little time on my hands, I am going over my KDX. I have been racing the SORCS series this season and although I have been maintaining my bike, I have not yet spent an excessive amount of time on it.It is a KDX so I cover the essentials.
Anyhoo,I have found an FMF spark arrestor silencer in my collection of goodies and decided to rest my PC 304 non spark arrestor for a bit and am repacking this FMF. Looking down into the end,there is packing that I simply can't entirely get out,not with long screwdrivers,not with knocking it out,not with spraying high pressure water, nor by long skinny sticks.

Short of drilling out the rivets,what can be done? Does it really matter if the residue packing doesn't entirely come out?

Thanks in advance. :pop:
User avatar
KDXGarage
KDXRider.net
KDXRider.net
Posts: 14047
Joined: 06:45 am Nov 01 2004
Country: United States of America
Location: AL, USA
Contact:

Re: FMF spark arrestor and the packing thereof

Post by KDXGarage »

Check your phone, paw paw.
Thank you for participating on kdxrider.net. :bravo:
To post pictures from a device: viewtopic.php?f=88&t=24128
User avatar
treelimb
Gold Member
Gold Member
Posts: 142
Joined: 12:13 pm Oct 27 2007
Country: United States of America
Location: Cedar Bluff,Al.

Re: FMF spark arrestor and the packing thereof

Post by treelimb »

I did and low and behold. I was waiting. I'd hate to hold that pristine system that shall remain nameless hostage. I suppose at 59 I might qualify as a paw paw.

Who else has OCD and would allow a little exhaust packing throw you off?
User avatar
Kdxfan4130
Supporting Member II
Supporting Member II
Posts: 116
Joined: 09:24 pm May 30 2019
Country: Usa

Re: FMF spark arrestor and the packing thereof

Post by Kdxfan4130 »

You tube has a bunch of repacking 2stroke silencer vids.
Restore rather than replace
User avatar
SS109
KDXRider.net
KDXRider.net
Posts: 5770
Joined: 05:11 am Aug 23 2009
Country: USA
Location: Tucson, AZ, USA
Contact:

Re: FMF spark arrestor and the packing thereof

Post by SS109 »

I admit, I drill out the rivets each repack and clean everything. That's how OCD I am!
Youtube Channel: WildAzzRacing
AZ State Parks & Trails OHV Ambassador - Trail Riders of Southern AZ
Current KDX: '98 KDX220
Old KDX: '90 KDX200 -White/Blue
'11 GasGas EC250R
User avatar
doakley
Gold Member
Gold Member
Posts: 1241
Joined: 02:58 pm Mar 10 2016
Country:

Re: FMF spark arrestor and the packing thereof

Post by doakley »

I only repack what I can get out.
User avatar
treelimb
Gold Member
Gold Member
Posts: 142
Joined: 12:13 pm Oct 27 2007
Country: United States of America
Location: Cedar Bluff,Al.

Re: FMF spark arrestor and the packing thereof

Post by treelimb »

doakley wrote: 07:54 pm Mar 26 2020 I only repack what I can get out.
Yes sir I attempt to do the same however this FMF silencer was aquired when I bought a box of KDX goodies from a rider in Cartersville,Ga. about 2008. The box of parts was $100.00.

In the box was the hardly used looking FMF silencer, A Fredette shorty kick lever, a brand new in the box Wiseco piston/rings,I'm thinking a new chain,some yamalube oil,and assorted sundries. YES it was a heck of a deal.The guy did race motocross and apparently was rather good and he had a KDX that he had sold and still had the parts which he sold to me. He had it for sale at Ga offroad site and I jumped on it.

All that short story long stuff above summed up - it was packed by him I assume and it had a stiff wire coiled around the packing and some tape and looked like a pro job. It probably didn't even need repacking but I decided to do it.
User avatar
treelimb
Gold Member
Gold Member
Posts: 142
Joined: 12:13 pm Oct 27 2007
Country: United States of America
Location: Cedar Bluff,Al.

Re: FMF spark arrestor and the packing thereof

Post by treelimb »

SS109 wrote: 06:57 pm Mar 26 2020 I admit, I drill out the rivets each repack and clean everything. That's how OCD I am!
I blew what I could out with an air wand and my air compressor and quickly reassembled it. I didn't want to get too involved and i was headed that way. It didn't really even need repacking. KDX G can attest to my issues. He has preached to me for years now regarding over-tightening things. In case one has not noticed,our friend is of dry wit-
User avatar
ericr
Gold Member
Gold Member
Posts: 246
Joined: 06:57 pm Nov 06 2017
Country: USA
Location: Gig Harbor, WA

Re: FMF spark arrestor and the packing thereof

Post by ericr »

SS109 wrote: 06:57 pm Mar 26 2020 I admit, I drill out the rivets each repack and clean everything. That's how OCD I am!
I'm glad to hear I'm not the only one with OCD. I even bed the rivets in ultra-copper so they won't leak. :grin:
'02 KDX 200, '02 KDX 220 - My restoration thread
User avatar
SS109
KDXRider.net
KDXRider.net
Posts: 5770
Joined: 05:11 am Aug 23 2009
Country: USA
Location: Tucson, AZ, USA
Contact:

Re: FMF spark arrestor and the packing thereof

Post by SS109 »

ericr wrote: 09:35 pm Mar 27 2020
SS109 wrote: 06:57 pm Mar 26 2020 I admit, I drill out the rivets each repack and clean everything. That's how OCD I am!
I'm glad to hear I'm not the only one with OCD. I even bed the rivets in ultra-copper so they won't leak. :grin:
I use standard high temp silicone on each end cap, the bolts, and yes, even the rivets! :grin:
Youtube Channel: WildAzzRacing
AZ State Parks & Trails OHV Ambassador - Trail Riders of Southern AZ
Current KDX: '98 KDX220
Old KDX: '90 KDX200 -White/Blue
'11 GasGas EC250R
User avatar
doakley
Gold Member
Gold Member
Posts: 1241
Joined: 02:58 pm Mar 10 2016
Country:

Re: FMF spark arrestor and the packing thereof

Post by doakley »

Sigh...I confess to using silicone also.
kdxsully
Supporting Member
Posts: 739
Joined: 08:28 am Apr 21 2019
Country: United States
Location: North Cackalack

Re: FMF spark arrestor and the packing thereof

Post by kdxsully »

We wouldn’t use it if it didn’t work, aesthetics aside
I like turtles
User avatar
treelimb
Gold Member
Gold Member
Posts: 142
Joined: 12:13 pm Oct 27 2007
Country: United States of America
Location: Cedar Bluff,Al.

Post by treelimb »

YA! I did use high temp silicone,BLUE in color and have repacked a silencer or two over the years just never encountered left over packing stuck in the end. I APPRECIATE the replies. This site is incredible!

I rode 32 miles of 3,4,and 5 diamond trails at Highland Park and am thinking that I can tell a difference,ever so slightly,between the FMF spark arrestor and my Pro Circuit 304. perhaps it is in my head. Regardless, i came home whipped and felt great and my KDX performed flawlessly as usual.

Racing and/or riding she has never let me down. I've had this particular KDX about 13 years now. I tell her "good girl" often-
Post Reply