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Old 08-01-2011, 05:17 PM   #1 (permalink)
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zx7r cams

where do i get my hands on some aftermarket cams??? im looking to make a little more hp....
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Old 08-01-2011, 06:05 PM   #2 (permalink)
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You might check with Muzzy's. I'm sure they made cams for your machine at one time.
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Old 08-01-2011, 06:12 PM   #3 (permalink)
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not sure if they still make them.. but that would be friggin sweet if they did!
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Old 08-01-2011, 06:35 PM   #4 (permalink)
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Web will grind you a set, but they aren't cheap and you'll need hi-comp pistons.
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Old 08-01-2011, 06:53 PM   #5 (permalink)
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You'll have to find Race KIT cams, Kent, ZXone or another cam regrinder.

If you had a 93-95 you can install ZX9 cams.

Josh
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Old 08-01-2011, 09:23 PM   #6 (permalink)
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will zx9r cams fit in my 1998 if so what year cams??
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Old 08-01-2011, 10:01 PM   #7 (permalink)
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I am not certain about the 96+, but 98-2000 ZX9 cams are similar, just need to swap gears.

The 93-95 ZX7 and 94-97 ZX9R are interchangeable just need to swap gears.

If you do a search you'll see most just swap the intake cam and the exhaust either doesn't do anything or actually hurts the peak power.

Also to take full advantage of the cams you'll need KIT springs, hotter CDI and Flatslide carbs. The stock CV carbs will hurt the performance as will the stock springs. It isn't strictly plug n play like a 5.0 Ford or SBC.

Josh
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Old 08-02-2011, 04:19 AM   #8 (permalink)
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Pipercams . co . uk

kentcams . com



Those are the only 2...
both of them are in the UK...
both will cost you around $400 to have ground...
both of them you will have to send your stock cams to...

Piper you can buy a set for $1600 and they are performance machined...

Both of them you will need to buy a set of adjustable gears for (good luck finding them)


the 2 grinds from Kent you wont need high comp pistons, and the cheaper of the Piper cams you wont need them either...


You will also need to order larger shims from the only guy I found... he is in australia...
the reason you need to do this is because a ground cam will be outside the regular shim size spec....

precisionshims . com . au

After this you will have to degree your cams... simple enough task if you know how

I just went through all of this...

I have Kent Race Day KAW18 cams with APE gears (in105/ex105)
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Old 08-02-2011, 04:22 AM   #9 (permalink)
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Quote:
Originally Posted by Bullitt View Post
I am not certain about the 96+, but 98-2000 ZX9 cams are similar, just need to swap gears.

The 93-95 ZX7 and 94-97 ZX9R are interchangeable just need to swap gears.

If you do a search you'll see most just swap the intake cam and the exhaust either doesn't do anything or actually hurts the peak power.

Also to take full advantage of the cams you'll need KIT springs, hotter CDI and Flatslide carbs. The stock CV carbs will hurt the performance as will the stock springs. It isn't strictly plug n play like a 5.0 Ford or SBC.

Josh
The stock 7R springs and valves are strong enough for the job... and the CDI is fine... with my FCR41's I redline at 14,200RPM and it still wants to go!!

I would say unless there is a plan for head work and swap for flat valves then there is no need for new springs and a new ignition
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Old 08-02-2011, 05:10 AM   #10 (permalink)
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Quote:
Originally Posted by Bullitt View Post
I am not certain about the 96+, but 98-2000 ZX9 cams are similar, just need to swap gears.

The 93-95 ZX7 and 94-97 ZX9R are interchangeable just need to swap gears.

If you do a search you'll see most just swap the intake cam and the exhaust either doesn't do anything or actually hurts the peak power.

Also to take full advantage of the cams you'll need KIT springs, hotter CDI and Flatslide carbs. The stock CV carbs will hurt the performance as will the stock springs. It isn't strictly plug n play like a 5.0 Ford or SBC.

Josh
With that being said, wouldnt these cams work in a 91-92 7 also?
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Old 08-02-2011, 05:53 AM   #11 (permalink)
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With that being said, wouldnt these cams work in a 91-92 7 also?
True dat... Should work but might be overkill without some work to complete the package.

ZxzOne.com sells cam kits... About 600+ and requires the cam core.

Josh
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Old 08-02-2011, 08:03 AM   #12 (permalink)
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Quote:
Originally Posted by Bullitt View Post
True dat... Should work but might be overkill without some work to complete the package.

ZxzOne.com sells cam kits... About 600+ and requires the cam core.

Josh
It looks like a core isn't required for the '93. What gains could be expected from an otherwise stock engine with a pipe and jetting?
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Old 08-02-2011, 11:15 AM   #13 (permalink)
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Quote:
Originally Posted by Hammerhead View Post
You might check with Muzzy's. I'm sure they made cams for your machine at one time.
Both Rob Muzzy and Dan Zlock dont do cams anymore as there is no more blanks left for the 7R...

I spoke to both of them through email and Eventually got a hold of Dan on the phone
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Old 08-02-2011, 11:17 AM   #14 (permalink)
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Quote:
Originally Posted by jasonc32amg View Post
It looks like a core isn't required for the '93. What gains could be expected from an otherwise stock engine with a pipe and jetting?
Gains wouldnt be worth it warranted the money and time involved... you might see 2-3HP...

the whole intent of cams is to allow for a heavier breathing bike at higher RPMs...

so you would want larger carbs, exhaust, airbox... etc...
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2003 Kawasaki ZX7R - Stripped Track Bike w/ gobbs of parts!!
2000 Kawasaki ZX7R - Muzzy & Some other Bits SOLD
2000 Kawasaki ZX7R - Stock 5,600km SOLD
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Old 08-02-2011, 01:17 PM   #15 (permalink)
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Quote:
Originally Posted by ZXgreen7r View Post
Gains wouldnt be worth it warranted the money and time involved... you might see 2-3HP...

the whole intent of cams is to allow for a heavier breathing bike at higher RPMs...

so you would want larger carbs, exhaust, airbox... etc...
Sounds like for the $$$ and effort you may as well go to a zx9 motor unless you're super nostalgic.
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Old 08-02-2011, 01:20 PM   #16 (permalink)
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Originally Posted by jasonc32amg View Post
Sounds like for the $$$ and effort you may as well go to a zx9 motor unless you're super nostalgic.

thats pretty much how I feel...

I am keeping a stock engine, stock internals... I have, Kent Cams, FCR41's off an RR... and once I get it all stripped down for the final build in the winter It will be a Simon Crafar Rep with an endurance front end...

Obviously Im not running Ohlins front end or Narrow Bands etc... but Im not putting much more then $1500 into this bike at this stage.
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2013 Kawasaki 300R - Limited Edition Green/Black (GF's new wheels)
2003 Kawasaki ZX7R - Stripped Track Bike w/ gobbs of parts!!
2000 Kawasaki ZX7R - Muzzy & Some other Bits SOLD
2000 Kawasaki ZX7R - Stock 5,600km SOLD
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Old 08-02-2011, 01:23 PM   #17 (permalink)
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Quote:
Originally Posted by ZXgreen7r View Post
thats pretty much how I feel...

I am keeping a stock engine, stock internals... I have, Kent Cams, FCR41's off an RR... and once I get it all stripped down for the final build in the winter It will be a Simon Crafar Rep with an endurance front end...

Obviously Im not running Ohlins front end or Narrow Bands etc... but Im not putting much more then $1500 into this bike at this stage.
I'm not sure what I'm going to do with mine. If I keep it for a while I may slowly acquire the zx9 parts. On the other hand there was nothing rational about buying this bike so I may just biuld the stock motor
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