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El_Flaco 10-11-2002 02:55 PM

Re: Product Review: Muzzy Pipes for ZRX1200R
All the scrap Russian titanium on the market may be a contributing factor to cheaper Ti parts for us nerds that thinks that it's just the coolest thing out there. A larger factor (IMHO) is the fact that the technology to actually work with the stuff is becoming cheaper and more accessible. Ever try to cut the stuff with a hacksaw or something? It's really fun to give an over-zealous buddy a chunk of it and a saw and say "go for it!" (Trust me.)

So now that people other than military contractors are actually able to forge, weld and machine the stuff (all very tricky things to do), I think that's why we are seeing real-world Ti applications.

Why is it tricky to work with, you ask? Well, it's very reactive with oxygen and it's very hard (very brittle in it's pure state, hence a usual Ti + vanadium + other goodies ****tail). I took a cutting torch to a chunk of Ti once- that was interesting. The stuff almost explodes when you heat it up and hit it with pure O2. So melting it down, forging it, welding-- pretty much anything that requires heating it-- is very tricky. Not to mention machining it eats up normal tool steel.

Anyway, huzzah for technology that makes all those tricky things not so tricky anymore and gives us lighter, cheaper, stronger crap!

hackfu 10-11-2002 03:02 PM

Re: Product Review: Muzzy Pipes for ZRX1200R
mmmmmmm...... cccrrrraaaaapppp....

jsven007 10-11-2002 03:17 PM

Re: Product Review: Muzzy Pipes for ZRX1200R

With a Full Exhaust, Jet Kit, and K&N filter, you should get close to 130 horsepower at rear wheel (corrected).

There are several dyno charts posted at ZRXOA forums. For a standard, 130hp isn't too shabby!

Right about the 30 pound exhaust, they have been weighed before, and they are just shy of 30 pounds. Expect 15-20 pound savings with a full exhaust.

ZX-11 exhausts will fit the ZRX 1200, or atleast the header will:)

johnnyb 10-11-2002 04:04 PM

Re: Product Review: Muzzy Pipes for ZRX1200R
Typical Flaco spouting off as usual, eh? Quite informative, actually... you getting any rain EF? College bettys impressed with your tales of MO? What up?

johnnyb 10-11-2002 04:26 PM

Re: Product Review: Muzzy Pipes for ZRX1200R
Typical Flaco spouting off as usual, eh? Quite informative, actually... you getting any rain EF? College bettys impressed with your tales of MO? What up?

SR 10-11-2002 05:36 PM

Re: Product Review: Muzzy Pipes for ZRX1200R
What exactly does that spring do, hold the can on? And why use a spring?

Swimwear_Pete 10-11-2002 06:46 PM

Re: Product Review: Muzzy Pipes for ZRX1200R
Where are the sound files. I get read about this sexy exhaust and then get to the end of the article only to have my excitement crushed from the lack of sound or video files.

I geuss I'll have to go back to work now...

Z3Coupe 10-11-2002 08:36 PM

Let's hear that dog bark!!!
You know, that was my exact thought! You tell us how it scares the public, but no sound files for us? Come on, now!

MrDeadeye 10-11-2002 09:23 PM

spring performance
I've always wondered about springs on exhaust pipes too. Can we increase performance with a heavier or lighter spring ;)

mergenex 10-11-2002 09:51 PM

Re: Product Review: Muzzy Pipes for ZRX1200R
ahhem.......yes, give us sound.


Yeah_right 10-12-2002 12:57 AM

Re: Product Review: Muzzy Pipes for ZRX1200R
Just to be a pain in the a$$. How about doing a story of the ZRX, leaving the stock exhaust on and re-jetting the carbs? I think it would be very interesting to see how much power you could find, by optimizing the carbs, without helping to pay for Rob Muzzy's bills. Of course, carburetors aren't very smart and can't adjust themselves to day to day, hour to hour, changes in air density, so dumb old carburetors are always going to be a compromise, but back to back dyno runs with Kawasaki's settings and more optimal one's, might be enlightening. I can't help but think, after looking at the dyno charts you posted and wonder if the HP gain above 7800 rpm is more due to the Muzzy exhaust or maybe the Kawasaki's main jets are a little too big, with the stock pipe.

El_Flaco 10-12-2002 11:47 AM

It's what I do- spouting, that is. I should be getting paid to do that soon with the "Daily" (campus newspaper at the UW); I had my first article published there on Thurday (hooray!) with more to follow.

Ohh, let's see, what else... not too much rain, really. Drizzle now and then, been chilly, but today's frickin' beautiful- sunny and a balmy 60 degrees! Rumors of another El Nino winter (seems like that's happening more and more) so hopefully be able to do a lot of riding this winter. Held boots, here I come!

ANd yes, some lovely Seattle ladies have been quite wowed with my tales of adventure in the mystical, far-off land of "Los Angeles," but nothing has blossomed yet. Must keep working on that...

'Bout it for now. I'll let you know when I start making the Big Bucks at the "Daily!"

HighsideHarry 10-12-2002 01:15 PM

Re: Product Review: Muzzy Pipes for ZRX1200R
Got that right! I made the mistake of buying a $400 aftermarket slip on for my YZF600 which, in my opinion, only made it louder. Loud wasn't so bad, but it sounded like a Toyota Tercel with a bad muffler after the installation of the aftermarket. I would -sure- like to see a sound file on all the different slip on's out there. Save me bux in the long run.

dug 10-12-2002 02:19 PM

Re: Product Review: Muzzy Pipes for ZRX1200R
I don't think there's a direct connection between the loudness of the pipe and the level of risk we experience when we ride. I have ridden bikes with stock and modified exhausts, and have noticed more attention tossed my way with louder pipes. As far as I'm concerned, that's a good thing.

There's not many things finer than fiddling with a bike the factory thought was good enough for Joe Q. Average. The aftermarket is my friend. He holds all my excess cash for me.

micro 10-12-2002 03:47 PM

Re: Product Review: Muzzy Pipes for ZRX1200R
Thanks for the exact weight numbers.

ZRX11Jim 10-12-2002 06:50 PM

Re: Product Review: Muzzy Pipes for ZRX1200R
I popped for the titanium Muzzy system for my 2001 model and it gained substantially more power than your bike did. Check out the chart here..

The full titanuium system doesn't have the internal divider plate collector that your stainless system does. It has a true 4 into 2 into 1 external collector. I was told there is no difference in power between the stainless pipe and the ti pipe by Muzzy's but perhaps that is incorrect.

After adding the Factory Pro 2.5 jet kit my bike jumped up to 132hp/90 pounds of torque.

Add some quick cleanup of the head by 4&6 Racing and some X-3 cams....hello 145hp.

Oh, and all these figures are 4th gear roll, same dyno, same dyno operator, same temps, SAE hp figures.

Really, Mr. Burns, if you want to get the inside scoop on the ZRX c'mon over to

Jim B.


TheFox 10-12-2002 07:21 PM

Damn dude, 145HP? That's getting near Hayabusa / CBR1100XX / ZZ-R1200 territory...


seruzawa 10-13-2002 04:25 PM

Re: Product Review: Muzzy Pipes for ZRX1200R
Upon noticing the degrading state of my current exaust system (rust forming due to the unfortunately too common practice of lousy chroming by certain eastern manufacturers) I considered this a great opportunity to upgrade to a nice aftermarket system for my Suzuki.

After a thorough search followed by a severe case of stickershock ($925 really???? $500+ for a pair of slipons????) I optioned for a trip to the local chrome shop.

If the aftermarket people keep this up they'll end up in serious trouble by chasing an ever decreasing number of people who are willing to pay these apparently exhorbitant prices. Heck, may as well go back to Harley if the prices for the eastern aftermarket stuff continues on this path.

It's like I told the GM service guy last spring. "If GM is going to charge BMW prices I may as well buy a BMW".

bollert 10-14-2002 01:24 AM

Re: Product Review: Muzzy Pipes for ZRX1200R
Many ZRX owners have had success with Ivan's Jet Kit, and the Factory Pro 2.5. Typical hp is around 130.

Pain_Seraphiin 10-14-2002 05:07 AM

Re: Product Review: Muzzy Pipes for ZRX1200R
I'm getting a woody hearing about all this extra horsepower. I just bought a 2002 VFR800 and luv the bike. I luv also luv the exhaust with a V8 sound. But it's somewhat subdued. Are there any effective slip-ons on the market to increase power and enhance the exhaust sound( just a little). I know the new VFR is fairly new, but are Fuel Injection chips also available?

More than like I should not touch a perfect bike to begin with. Never mind. Thanks for all ur help.

DeadVFR 10-14-2002 06:13 AM

Re: Product Review: Muzzy Pipes for ZRX1200R
I'd much have a 6th gear. In my neck of the woods, my fellow commuters travel at 75+ mph. This means I usually exceed 80 mph to avoid that 'about to be run over' sensation. 4500 rpm is just too dang buzzy for me for continuous commuting operation.

Perhaps I should just look around for a VFR 1200 instead.

remusr 10-14-2002 10:15 AM

Re: Product Review: Muzzy Pipes for ZRX1200R
Try Micron slipons for great NASCAR sound bytes. Don't know about perf increase as it went on my buddy's VFR at the dealer new.

crankin500 10-14-2002 03:29 PM

Re: Jet kit sticker shock
Check out the pricing on some jet kits!!! I recently bent over for a $65 jet kit for my klx 650 dual sport (single cylinder/carb). I was expecting some sort of magic parts but received a little plastic box with 2 jets, needle, regular old taiwan drill bit and a sheet metal screw. Next time I will just check to see what is in the kit and order the parts separately from at a small fraction of the cost.

Rafi 10-15-2002 03:37 AM

Re: Product Review: Muzzy Pipes for ZRX1200R
Titanium has always been cheap and Russia (or the USSR, depending on how far back you go). But they just knew they could gouge us on the prices all these years (same with Aluminum). My friend in Poland buys titanium tire irons at the local flea market for super-cheap, and makes stuff out of them (he made a floating diver's knife once). But everything I've heard about working with the stuff dissuades me from trying it on my own.

bwarbiany23 10-15-2002 06:20 AM

Re: Product Review: Muzzy Pipes for ZRX1200R
Looking at that dyno, methinks either Kawi made a heck of a stock system (not likely), or you need a re-jet... There were almost no power gains short of up top... Time to try some Factory Pro lovin' on that sucker!


El_Flaco 10-15-2002 06:21 AM

working with Ti
That's cool about your friend in Poland making cool stuff out of "scrap" titanium. I tried to forge a knife out of a chunk I had... it went OK, but ended up looking more like a butter knife. I don't really know what the working did to the inherent properties of the alloy I was using. But it's fun to try. There's getting to be more and more literature out there about it- get out and try! What's the worst that could happen? (Ka-Boom! Oh, whups, never mind...)

motoman_1 10-15-2002 10:24 AM

Re: Product Review: Muzzy Pipes for ZRX1200R
I have thought the same thing and resisted buying the bike just for this reason, unfortunately, Kawasaki doesn't seem to be capable of making a 1100 with a six speed that will hold up....I bought a zrx and found my reservations to be founded.

badinfluence 10-15-2002 10:32 AM

Re: spring performance
Changing the spring changes the rate of exhaust advance through the system. A heavier spring will delay full exhaust advance until higher in the RPM range, taking a little bit of power from the bottom end, but giving it more at the top. A lighter spring does just the opposite, giving full exhaust advance at a lower RPM and thus more torque at the expense of high RPM horsepower.

You can tune the exhaust in this manner for short or twisty tracks where off-the-corner acceleration is most important or for long top end tracks like Daytona. So always carry several different tension exhaust springs with you.

Holy_Kaw 10-16-2002 08:20 AM

Re: Product Review: Muzzy Pipes for ZRX1200R
Love my '02 Rex but would like to open up the top end, it feels "choked" past 8000rpm. Any info on Ivans jet kit? I've heard of the airbox mod but would like to know more before randomly drilling around. I'm planning on the Muzzy pipe (maybe after the warranty expires) but am open to any verified (dyno) hop-up info. Eagerly await wrap-up of test.

BBD_Racing 10-16-2002 10:15 AM

Re: Product Review: Muzzy Pipes for ZRX1200R
Well said Flake-Man.

Ti is plentiful, but a royal pain to do anything with. Just extracting it is nasty:

Steel: pour lots of iron ore into big bucket. Heat. Blow in lots of CO2. Pour off molten steel. Add alloying elements as required.

Ti: Oh dear God. Multi step process including huge vats of acid, several intermediate compounds and finishing in a 99.99% pure copper crucible heated thru induction in a vacuum or noble gas atmosphere.

Then you gotta try to make something out of it. I wonder if anybody has done any powder mettalurgy work with Ti. Its been a ling time since I worked in that area.

ZRXJT 10-18-2002 03:31 PM

Re: Product Review: Muzzy Pipes for ZRX1200R
Yey go with a DJ Kit stg3 with Pods and 138 pilots. 1 turn out on the idle mix screws, and walla 127hp 85 ftlbs TQ and your Happy. No problem. Ride it like you got a set.

JT FT Hood TX.

02TriBonnie 10-23-2002 07:43 AM

Re: Product Review: Muzzy Pipes for ZRX1200R
You should check out He has many different perfomance mods available including Slip-ons, full header and a nice jet kit. One of my buddies has a Bandit 1200 with his jet kit and slip-on. It sounds and runs great.

PrairieDog 10-26-2002 02:56 AM

Re: Product Review: Muzzy Pipes for ZRX1200R
Hey John Burns,

You wrote a wonderful article on a great bike. A bike that many of us have the same kind of feelings for. You seem to like the Kawasaki ZRX1200.

You did another of your excellent articles on putting a Muzzy pipe on the bike. In that same article you wrote the words, "Join us next week as we toy with needles, fool with jets, possibly **** with float heights, and try to contact a human one more time at the K&N air filter company."

Well, here it is - more than 2 weeks after you wrote that article and we're still waiting for you to do the follow-up. And we find you're now infatuated with the XB9S Buell!

When are you going to do what you said you would do? We're waiting on the next article on the ZRX. Get crackin'!

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