Stock silencer and head pipe

Discussion specific to the 1995 - 2006 KDX200 (H Series) and 1995 - 2005 KDX220R (A Series) models sold in the USA
Post Reply
waldo177
Member
Posts: 23
Joined: 02:11 pm Apr 21 2015
Country:

Stock silencer and head pipe

Post by waldo177 »

Hi everyone, I have purchased a '96 KDX 200 recently and trying to get the thing lined out. Compression is 160 as far as I can tell if I'm even doing it right? Kicking it over multiple times with the throttle wide open until the needle stops moving. The bike runs strong very fast. I have excess spooge as people call it on here coming from the silencer, I opened the service plug and drained almost a spray paint can lid full of this goo. I want to clean it out and my question is can I burn it out or what would you recommend to clean it thoroughly? By the way the PO was running a 50:1 gas mix and this thing smokes like crazy and could this be where I'm getting all the smoke from.
newbbewb
Supporting Member II
Supporting Member II
Posts: 579
Joined: 12:20 am Jan 22 2012
Country:
Location: sw washington state

Re: Stock silencer and head pipe

Post by newbbewb »

It is a common practice to re-pack the spark arrestor on any bike, but not sure if the factory kdx can be re-packed.

excessive smoke will not be coming from the spark arrestor, but if it's all plugged up it will cause the bike to run rich. Make sure air filter is clean, spark arrestor is clean, put new gas in it and jet. 50:1 is probably fine, but it will need to be re-jet. While you are re-jetting, you can clean the carb. Thats just basics. You should look at reeds, make sure crank seals aren't leaking, and no air leaks at the carb boot.
93 kdx200-Highly modified
89 kx125/kdx200E engine
Buelldustin@gmail.com
waldo177
Member
Posts: 23
Joined: 02:11 pm Apr 21 2015
Country:

Re: Stock silencer and head pipe

Post by waldo177 »

air filter is clean, not loosing oil in the crank case gas is new and I have changed the pre mix to 40:1, I have pulled the silencer off and removed the drain plug to let it drain how else would you clean the spark arrester? From what I have read this spark arrestor does not have packing so there would be no reason to repack.
waldo177
Member
Posts: 23
Joined: 02:11 pm Apr 21 2015
Country:

Re: Stock silencer and head pipe

Post by waldo177 »

I did have to repair a hole in the tank and I did fill it with water to find the crack but once I repaired it I let it sit for 2 days to dry out good. I did check my jets and I may have to run 50:1 as they are 48 pilot and 160 main with the stock needle 1174 and set on the third ring from top, which I was going to move to the second from top because it seemed to be rich in the middle and smoke the most there.
User avatar
doctord23
Supporting Member
Posts: 323
Joined: 01:29 pm Jul 28 2009
Country: USA
Location: NorCal

Re: Stock silencer and head pipe

Post by doctord23 »

That is the stock jetting and is known to be overly rich.
I'm at 42 and 152; 2nd from the top, but you may want work your way down in increments.
Maybe try 45 and 155 first.
My Team Green:
2002 KX-KDX 220
2000 KDX 220
2003 KLX 300 DS
1988 White KDX 200C3
1984 KX500 (original owner)
1996 Honda Magna V4
2017 Honda Africa Twin DCT
waldo177
Member
Posts: 23
Joined: 02:11 pm Apr 21 2015
Country:

Re: Stock silencer and head pipe

Post by waldo177 »

Can I burn or clean the factory silencer? If not burn what would I use to clean it out?
User avatar
IDRIDR
Gold Member
Gold Member
Posts: 207
Joined: 04:36 pm Mar 03 2014
Country: USA
Location: Boise, Idaho

Re: Stock silencer and head pipe

Post by IDRIDR »

waldo177 wrote:Can I burn or clean the factory silencer? If not burn what would I use to clean it out?
I've wondered if it could go into the range on self-clean mode. :hmm:
2003 KDX 220. RB Carb & Head Mods. Desert pipe. She's a runner!
2006 KLX 250 w/351 big bore. A well-sorted dual sporter.
2006 KLR 650. Mostly stock.
2014 Suzuki DL1000.
User avatar
adam728
Supporting Member
Posts: 388
Joined: 05:29 am Jul 29 2013
Country:
Location: Michigan

Re: Stock silencer and head pipe

Post by adam728 »

IDRIDR wrote:
waldo177 wrote:Can I burn or clean the factory silencer? If not burn what would I use to clean it out?
I've wondered if it could go into the range on self-clean mode. :hmm:
Ever see a spooged up Sparky spark arrestor or a goo filled pipe go in a campfire to get burnt out? You would NOT want that in an oven, and DEFINITELY NOT in a house. YouTube "Sea Foam smoke", then multiply by 80.

Best clean out for a stock silencer is getting jetting right, then run it HARD. Deep sand, high speeds, lots of WOT. You'll see crazy smoke once it's hot enough to get the spooge burning. Sometimes it will continue to billow and burn for a good amount of time after the bike is off. Kind of scary.
User avatar
IDRIDR
Gold Member
Gold Member
Posts: 207
Joined: 04:36 pm Mar 03 2014
Country: USA
Location: Boise, Idaho

Re: Stock silencer and head pipe

Post by IDRIDR »

Good point. I'll use the girlfriend's oven ...
2003 KDX 220. RB Carb & Head Mods. Desert pipe. She's a runner!
2006 KLX 250 w/351 big bore. A well-sorted dual sporter.
2006 KLR 650. Mostly stock.
2014 Suzuki DL1000.
User avatar
adam728
Supporting Member
Posts: 388
Joined: 05:29 am Jul 29 2013
Country:
Location: Michigan

Re: Stock silencer and head pipe

Post by adam728 »

Actually, not a bad idea if you are looking to break up.
User avatar
IDRIDR
Gold Member
Gold Member
Posts: 207
Joined: 04:36 pm Mar 03 2014
Country: USA
Location: Boise, Idaho

Re: Stock silencer and head pipe

Post by IDRIDR »

Very observant you are.

May as well go out with a good story.
2003 KDX 220. RB Carb & Head Mods. Desert pipe. She's a runner!
2006 KLX 250 w/351 big bore. A well-sorted dual sporter.
2006 KLR 650. Mostly stock.
2014 Suzuki DL1000.
newbbewb
Supporting Member II
Supporting Member II
Posts: 579
Joined: 12:20 am Jan 22 2012
Country:
Location: sw washington state

Re: Stock silencer and head pipe

Post by newbbewb »

heat gun. It'll have that silencer smoking in no time. I clean my pipes out this way.

Using you soon to be ex girlfriends oven is a great idea. Please take reaction video.
93 kdx200-Highly modified
89 kx125/kdx200E engine
Buelldustin@gmail.com
User avatar
Sullyfam
Gold Member
Gold Member
Posts: 459
Joined: 12:19 am Dec 10 2013
Country:
Location: Fort Worth, tx

Re: Stock silencer and head pipe

Post by Sullyfam »

I've been thinking if going the heat gun route, but I am a little concerned the smoke plume will freak the neighbors out. Maybe I will go find an empty field or do it in my brother backyard while he's out...


Sent from my iPhone using Tapatalk
waldo177
Member
Posts: 23
Joined: 02:11 pm Apr 21 2015
Country:

Re: Stock silencer and head pipe

Post by waldo177 »

doctord23 wrote:That is the stock jetting and is known to be overly rich.
I'm at 42 and 152; 2nd from the top, but you may want work your way down in increments.
Maybe try 45 and 155 first.
Yes I am very rich, what ratio of fuel are running? After doing some research I want to run what the bike was originally supposed to run which is 32:1 I like the Idea of having the extra oil to lubricate
Post Reply