Modded the exhaust finally.

katoranger · 05-22-2008, 09:27 PM

I bought a used honda CRF150/230 aluminum silencer on ebay. $30 shipped.

Requires some modifications and is not a direct fit.

I cut the stock muffler off where it flares out to the exhaust pipe and then needed to slobber a spacer onto the stock pipe so that the crf pipe would fit tightly over it and clamp on. The muffler bolted on to the stock frame mount.

It is louder than the stocker and doesn't have a spark arrester. I think I will keep my eye out for a quiet insert/spark arrester for the honda muffler.

I have noticed an increase in power though. I also removed the airbox lid and cleaned the stock filter. A new UNI pod is the next mod.

It is alittle lean so I think I will need to increase the main jet size.

The best part is it now sounds like a much larger bike.

Highway speed the noise is about the same.

Allen

katoranger · 05-22-2008, 10:17 PM

Anyone make a quiet insert before?

Allen

CRidin · 05-22-2008, 10:24 PM

I have used 2 stroke packing. I guess it would work on these if you dont over pack it. Its cheap too.

katoranger · 05-22-2008, 10:55 PM

I thought about drilling out the rivots and repacking it. The quiet inserts look like they could be made. It is not that loud, but if I could quiet it some it would be nice.

Better than the ratty stocker.

Allen

dieselhead · 05-22-2008, 11:29 PM

Good silencer material is house hold fiberglass insulation. Wrap it loosely around your core tube with some wire. Works great, it just eventualy needs a fresh repac once in a while.
Hey Kato, are those Duro tires on your bike? How do they compare to the stock CST's?

katoranger · 05-22-2008, 11:32 PM

Thanks. Plenty of insulation available in new subdivision dumpsters.

Yep those are duros. On road the duros are great. No comparison to the CSTs.

Off-road they are decent, but the CST did better in certain terrain.

Allen

liverchip · 05-23-2008, 12:03 AM

When did you put a DR tank on it, Allen?

red2003 · 05-23-2008, 08:01 AM

Hey Allen, did you know your front tire is mounted on backwards? If you check the sidewall, I am pretty sure your direction arrow is going the wrong way. Just an FYI.

katoranger · 05-23-2008, 08:44 AM

Red it is the right way. I confirmed it win I installed it.

I put that DR tank on a few weeks ago when the stocker started leaking again.

I want to mount it better and paint it yet, but this is my daily driver.

Allen

red2003 · 05-23-2008, 08:54 AM

Quote:

Originally Posted by katoranger

Red it is the right way. I confirmed it win I installed it.

Allen

Cool! I only asked because I just mounted up a Bridgestone Trail Wing on the front of mine this weekend. It has the identical tread pattern as your Duro Median (which I am mounting on the rear of my bike this weekend) and mounts the other way, like most directional tires do on the front. They mount in what appers to be reverse so the tread has more bite for brakeing. Good deal, ride on!

katoranger · 05-23-2008, 08:56 AM

I checked to make sure it was right and the brake rotor was on the right side before it mounted it.

Remember this is a taiwan tire so the arrow was probably put on backwards.

red2003 · 05-23-2008, 09:02 AM

On a side note, what kind of mileage are you getting out of those Medians? I only got 2200 miles on the stockers, and my front was badly cupped, and the rear is at the wear bars.

katoranger · 05-23-2008, 11:42 AM

The rear has 2600 miles and is about half worn. The front has about 1000 miles and I can't see any wear yet.

I think 5-6K from the rear. My stock rear went to 3400 miles.

Allen

red2003 · 05-23-2008, 12:13 PM

Thanks for the info! Back on topic, I like your muffler mod. Good choice of muffler. My YZ250F muffler sounds pretty mean for a little 200. Nice job!

katoranger · 05-23-2008, 01:25 PM

It no longer sounds wimpy and like it been smokin two packs a day.

I played with changing the opening size on the tailpipe and I can reduce the noise output without changing the sound much. Will make my own insert.

It actually thumps mow.

Allen

05-22-2008, 09:27 PM	#1
katoranger Join Date: May 2007 Location: Altamont, Kansas Posts: 15,103	Modded the exhaust finally. I bought a used honda CRF150/230 aluminum silencer on ebay. $30 shipped. Requires some modifications and is not a direct fit. I cut the stock muffler off where it flares out to the exhaust pipe and then needed to slobber a spacer onto the stock pipe so that the crf pipe would fit tightly over it and clamp on. The muffler bolted on to the stock frame mount. It is louder than the stocker and doesn't have a spark arrester. I think I will keep my eye out for a quiet insert/spark arrester for the honda muffler. I have noticed an increase in power though. I also removed the airbox lid and cleaned the stock filter. A new UNI pod is the next mod. It is alittle lean so I think I will need to increase the main jet size. The best part is it now sounds like a much larger bike. Highway speed the noise is about the same. Allen __________________ You meet the nicest people on a Honda Clone.
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05-22-2008, 10:17 PM	#2
katoranger Join Date: May 2007 Location: Altamont, Kansas Posts: 15,103	Anyone make a quiet insert before? Allen __________________ You meet the nicest people on a Honda Clone.
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05-22-2008, 10:55 PM	#4
katoranger Join Date: May 2007 Location: Altamont, Kansas Posts: 15,103	I thought about drilling out the rivots and repacking it. The quiet inserts look like they could be made. It is not that loud, but if I could quiet it some it would be nice. Better than the ratty stocker. Allen __________________ You meet the nicest people on a Honda Clone.
	0

05-22-2008, 11:32 PM	#6
katoranger Join Date: May 2007 Location: Altamont, Kansas Posts: 15,103	Thanks. Plenty of insulation available in new subdivision dumpsters. Yep those are duros. On road the duros are great. No comparison to the CSTs. Off-road they are decent, but the CST did better in certain terrain. Allen __________________ You meet the nicest people on a Honda Clone.
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05-23-2008, 12:03 AM	#7
liverchip Join Date: Nov 2006 Location: Mystery Spot Posts: 1,223	When did you put a DR tank on it, Allen? __________________ 2009 XR650L Big Red Pig Tusk bar risers 2007 X-Moto(Jetmoto) GY250 --mods--- 15/40 sprockets UNI Pod Filter 2007 Shineray TMS 200XYi--Betsy Betsy Mods:______________________ Acerbis DHH headlight FMF Powercore pipe Uni Pod Filter
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05-22-2008, 10:24 PM	#3
CRidin Join Date: Apr 2008 Posts: 181	I have used 2 stroke packing. I guess it would work on these if you dont over pack it. Its cheap too.
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05-22-2008, 11:29 PM	#5
dieselhead Join Date: Jan 2008 Location: Catskill Mnts NY Posts: 85	Good silencer material is house hold fiberglass insulation. Wrap it loosely around your core tube with some wire. Works great, it just eventualy needs a fresh repac once in a while. Hey Kato, are those Duro tires on your bike? How do they compare to the stock CST's?
	0

05-23-2008, 08:01 AM	#8
red2003 Join Date: Jan 2007 Location: Northern Vermont, USA Posts: 1,247	Hey Allen, did you know your front tire is mounted on backwards? If you check the sidewall, I am pretty sure your direction arrow is going the wrong way. Just an FYI. __________________ First Chinabike: 2006 Roketa RSX200E Current Chinabikes: 2023 Titan DLX & 2022 Lifan KP Mini w/ 210cc BRT kit, 22 RWHP!
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05-23-2008, 08:44 AM	#9
katoranger Join Date: May 2007 Location: Altamont, Kansas Posts: 15,103	Red it is the right way. I confirmed it win I installed it. I put that DR tank on a few weeks ago when the stocker started leaking again. I want to mount it better and paint it yet, but this is my daily driver. Allen __________________ You meet the nicest people on a Honda Clone.
	0

05-23-2008, 08:56 AM	#11
katoranger Join Date: May 2007 Location: Altamont, Kansas Posts: 15,103	I checked to make sure it was right and the brake rotor was on the right side before it mounted it. Remember this is a taiwan tire so the arrow was probably put on backwards. __________________ You meet the nicest people on a Honda Clone.
	0

05-23-2008, 09:02 AM	#12
red2003 Join Date: Jan 2007 Location: Northern Vermont, USA Posts: 1,247	On a side note, what kind of mileage are you getting out of those Medians? I only got 2200 miles on the stockers, and my front was badly cupped, and the rear is at the wear bars. __________________ First Chinabike: 2006 Roketa RSX200E Current Chinabikes: 2023 Titan DLX & 2022 Lifan KP Mini w/ 210cc BRT kit, 22 RWHP!
	0

05-23-2008, 11:42 AM	#13
katoranger Join Date: May 2007 Location: Altamont, Kansas Posts: 15,103	The rear has 2600 miles and is about half worn. The front has about 1000 miles and I can't see any wear yet. I think 5-6K from the rear. My stock rear went to 3400 miles. Allen __________________ You meet the nicest people on a Honda Clone.
	0

05-23-2008, 12:13 PM	#14
red2003 Join Date: Jan 2007 Location: Northern Vermont, USA Posts: 1,247	Thanks for the info! Back on topic, I like your muffler mod. Good choice of muffler. My YZ250F muffler sounds pretty mean for a little 200. Nice job! __________________ First Chinabike: 2006 Roketa RSX200E Current Chinabikes: 2023 Titan DLX & 2022 Lifan KP Mini w/ 210cc BRT kit, 22 RWHP!
	0

05-23-2008, 01:25 PM	#15
katoranger Join Date: May 2007 Location: Altamont, Kansas Posts: 15,103	It no longer sounds wimpy and like it been smokin two packs a day. I played with changing the opening size on the tailpipe and I can reduce the noise output without changing the sound much. Will make my own insert. It actually thumps mow. Allen __________________ You meet the nicest people on a Honda Clone.
	0