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Introducing Phoebe, my 1990 Zephyr 550 B1 26 Jul 2014 16:06 #641531

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I got this bike (my first) last summer and I can't tell you how much joy she's brought to my life. I had no idea you could buy that much fun for a grand. For those of you that aren't familiar with the Zephyr, it's a 1990's update on the KZ line. Many (most) of the parts are the same, including most of the engine (which even has a "KZ" serial number). The main difference is the addition of an oil cooler and rear disk brakes as standard, a bit different styling (reminiscent of the Z1) and some other minor changes. These bikes are rare in the US, where they were sold for only a couple of years, but are common in Europe and Japan. They didn't get great reviews here when they first came out, but owners love them, me included. There are a few forums dedicated to the Zephyr but I can't get enough. They are similar enough the KZs (they ARE KZs really) that I thought it might be fun taking part in this forum.

Cheers!
Mark
1990 Zephyr zr550 B1
Factory Pro Stage 1 jet kit
zx550 cams
SPII ignition system
Kerker stainless steel race exhaust with 1.5" competition baffle
K&N Air Filter...
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Introducing Phoebe, my 1990 Zephyr 550 B1 26 Jul 2014 19:16 #641546

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Welcome aboard! Pretty bike! Ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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Introducing Phoebe, my 1990 Zephyr 550 B1 27 Jul 2014 00:18 #641579

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Nice!

I have some info on the cam timing for your Zeph in my signature (valve train warning link).

Some people use the CV30 carbs from your bike on KZ's and ZX's for racing.

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Introducing Phoebe, my 1990 Zephyr 550 B1 27 Jul 2014 06:31 #641591

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That's a great looking bike. Pretty color, even a factory oil cooler. That is very nice indeed.
What did you pay for it, and how many miles are on it?
1982 KZ1000LTD K2 Vance & Hines 4-1 ACCEL COILS Added Vetter fairing & Bags. FOX Racing rear Shocks, Braced Swing-arm, Fork Brace, Progressive Fork Springs RT Gold Emulators, APE Valve Springs, 1166 Big Bore kit, RS34's, GPZ cams.
1980 KZ550LTD C1 Stock SOLD Miss it
1979 MAZDA RX7 in the works, 13B...

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Introducing Phoebe, my 1990 Zephyr 550 B1 27 Jul 2014 16:01 #641648

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That's a very nice looking bike for $1,000. Nice score.

Motor Head: it said this in OP "I had no idea you could buy that much fun for a grand."
Old School Is Cool!

1975 Kawasaki 900 (Z1B)
1982 Suzuki GS750E

Northern KY

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Introducing Phoebe, my 1990 Zephyr 550 B1 27 Jul 2014 16:56 #641659

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Thanks all. The bike has about 30K miles on it. It had closer to 25K when I bought it last summer for $1K. It was in pretty rough shape:



The pics I posted represent a whole lot of TLC getting the bike back into shape. It runs beautifully now and looks nearly new.
1990 Zephyr zr550 B1
Factory Pro Stage 1 jet kit
zx550 cams
SPII ignition system
Kerker stainless steel race exhaust with 1.5" competition baffle
K&N Air Filter...

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Introducing Phoebe, my 1990 Zephyr 550 B1 27 Jul 2014 19:28 #641685

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That's a sweet little bike you got there! A highly evolved and refined KZ550. Love the stainless exhaust, better brakes, better carbs, etc etc.
1980 KZ750-H1 (slightly altered)
1987 KZ1000-P6 "Ponch"
1979 GS1000 "Dadzuki"

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Introducing Phoebe, my 1990 Zephyr 550 B1 01 Aug 2014 04:49 #642256

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Nice find and it has cleaned up rather nicely. ! That stock exhaust sounds very quiet,
'85 GPz550(ZX550-A2)

GPz550 Base Manual --> tinyurl.com/ze5b3qo
GPz550 Supplement Manual --> tinyurl.com/h34d2o6
GPz550.com --> www.nwsca.com/scripts/gpz_forum_2005/default.asp
First Race Win GPz550 --> tinyurl.com/o5y3ftp

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Introducing Phoebe, my 1990 Zephyr 550 B1 01 Aug 2014 09:15 #642309

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CoreyClough wrote: That stock exhaust sounds very quiet,


You say that like it's a bad thing ;)
It's even quieter now with a carb cleaning/synching, tune-up, manual cam chain tensioner, etc. It does have a nice tone when the revs are high.
One day I'd like to install a screaming titanium exhaust like this Win McCoy -


Attachment Kawasaki-Z1-by-Bull-Dock-1.jpg not found

1990 Zephyr zr550 B1
Factory Pro Stage 1 jet kit
zx550 cams
SPII ignition system
Kerker stainless steel race exhaust with 1.5" competition baffle
K&N Air Filter...
Attachments:

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Introducing Phoebe, my 1990 Zephyr 550 B1 05 Aug 2014 06:08 #642725

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Zaddict wrote:

CoreyClough wrote: That stock exhaust sounds very quiet,


You say that like it's a bad thing ;)
It's even quieter now with a carb cleaning/synching, tune-up, manual cam chain tensioner, etc. It does have a nice tone when the revs are high.
One day I'd like to install a screaming titanium exhaust like this Win McCoy -


Attachment Kawasaki-Z1-by-Bull-Dock-1.jpg not found

Not at all. My bikes have never had the stock exhaust on them, and when i hear a stock system, it sounds very quiet. The cam chain noise(typical) is more noticeable when the exhaust is quieter. The expansion box in that stock system has always puzzled me. maybe have it removed???
'85 GPz550(ZX550-A2)

GPz550 Base Manual --> tinyurl.com/ze5b3qo
GPz550 Supplement Manual --> tinyurl.com/h34d2o6
GPz550.com --> www.nwsca.com/scripts/gpz_forum_2005/default.asp
First Race Win GPz550 --> tinyurl.com/o5y3ftp

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Introducing Phoebe, my 1990 Zephyr 550 B1 07 Aug 2014 20:46 #643112

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I read a few threads that indicated that exhaust expansion box helps performance, but if that's the case the effects must be minimal because people don't tend to notice much when it's removed. Still, seems like it must serve some purpose if Kawasaki has gone through the trouble of adding it to these bikes for all these years (it's on Zephyr exhausts all the way through 2008). Here one of the relevant threads if you're curious -

www.kawasakimotorcycle.org/forum/kawasak...xhaust-question.html
1990 Zephyr zr550 B1
Factory Pro Stage 1 jet kit
zx550 cams
SPII ignition system
Kerker stainless steel race exhaust with 1.5" competition baffle
K&N Air Filter...

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