Hydraulic Clutch Conversion????

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11 Mar 2007 08:20 #119189 by GPz750KS
Hydraulic Clutch Conversion???? was created by GPz750KS
OK, I've checked the search, but haven't found any good information. I want to change the Cable clutch on my 1982 KZ750R to Hydraulic. Any Help or leads appreciated. I just need a direction to go in or some links to maybe start searching. I should be fine from there.

Just a note. I've converted the brake to a Shindy Adjustable Brake master Cylinder and would like to do the same for the Clutch.

Richard Z.

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  • RetroRiceRocketRider
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11 Mar 2007 08:33 #119191 by RetroRiceRocketRider
Replied by RetroRiceRocketRider on topic Hydraulic Clutch Conversion????
Although American Classix.com offers a conversion kit, it shows as being out of stock right now and doesn't specify exactely which bikes it fits.
It's pretty steeply priced too ($399.95! :ohmy:).

Maybe try contacting them to see if it will fit your bike, and when they'll have them in stock again. :)

Covina, So Calif!
78 KZ650-B2 = SOLD
84 ZN700 LTD = SOLD
84 ZX750 GPz = SOLD
89 GSX1100F Katana = SLEEPING :-/
20 VN1700 Vulcan Vaquero (the Blue Cowboy)
Looking for my next project KZ

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  • kano
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11 Mar 2007 09:21 #119205 by kano
Replied by kano on topic Hydraulic Clutch Conversion????
the kit is pricey but they do sell the actuator seperate
for both classic kz and gpz/j motors too.
this would be the way to go buy the master cylinder of your choice and even get the nice billet sprocket clover
that i posted about earlier in the week.





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11 Mar 2007 16:41 #119284 by GPz750KS
Replied by GPz750KS on topic Hydraulic Clutch Conversion????
I just wish they would answer my emails.... Maybe they will when they are back instock..

Thanks,
Richard Z.

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12 Mar 2007 05:56 #119445 by barney
Replied by barney on topic Hydraulic Clutch Conversion????
Yea American Classics. Bought something from them a year or so ago, took forever to arrive, in the mean time they rarely replied to repeated emails to enquire about delivery. I'll never use them again.
The following user(s) said Thank You: saxjonz

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  • kano
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12 Mar 2007 07:04 #119453 by kano
Replied by kano on topic Hydraulic Clutch Conversion????
shame American Classics can't get stuff together like jeff at z1 enterprises they have some nice unique stuff on their site.

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  • mark1122
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12 Mar 2007 12:34 #119522 by mark1122
Replied by mark1122 on topic Hydraulic Clutch Conversion????
there are lots of bikes out there with hydro clutches now .You should have no trouble adapting 1.I've seen a zx750 used on a kz1000.Im triing a zrx on mine.

76 KZ, frame gusset work,1200CC.Ported by Larry Cavanaugh, 1.5mm.over intakes, Carron Pipe, ZRX12 rear end, and seat,96zx9 front end.
01 CBR600F4i Track bike.
Cobourg, Ont. Can.

~ ~ ~_@
~ ~ _- \,
~ (k) / (z)

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12 Mar 2007 13:49 #119553 by GPz750KS
Replied by GPz750KS on topic Hydraulic Clutch Conversion????
I got this email today from American Classics.

I am curently in Europe checking for new and all our other out of stock parts. I
should know more in about a week.

Europe? American Classics, whats wrong with this picture?

Get back from vacation and build me my parts...

Richard Z.

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12 Mar 2007 14:01 #119557 by StreetfighterKz
Replied by StreetfighterKz on topic Hydraulic Clutch Conversion????
I'm almost done with a conversion. Check out my thread on CM. I haven't tested it yet because of snow and still needing a longer clutch hose.

www.cyclemadness.com/forum/viewthread.php?tid=4391&page=2

Later, Doug

1978 z1000 Streetfighter
1976 z900 Stripfighter (work in progress)
1983 Gpz750 Resto-Mod
1989 Vmax

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  • mark1122
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13 Mar 2007 07:59 #119759 by mark1122
Replied by mark1122 on topic Hydraulic Clutch Conversion????
I have a line on a zrx11 hydro clutch,cheap . If your interested let me know .Mine is arriving this week so I can give you some dimensions and pics.

76 KZ, frame gusset work,1200CC.Ported by Larry Cavanaugh, 1.5mm.over intakes, Carron Pipe, ZRX12 rear end, and seat,96zx9 front end.
01 CBR600F4i Track bike.
Cobourg, Ont. Can.

~ ~ ~_@
~ ~ _- \,
~ (k) / (z)

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  • riverroad
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13 Mar 2007 10:38 #119807 by riverroad
Replied by riverroad on topic Hydraulic Clutch Conversion????
Hey StreetfighterKZ,
That site wants me to register just to look at anything.
What's up with that?

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13 Mar 2007 13:30 #119842 by StreetfighterKz
Replied by StreetfighterKz on topic Hydraulic Clutch Conversion????
Never noticed that since I'm always signed in...

Let me copy/paste.....

The setup is from a '91 Zx7 and its pretty easy although time consuming with hand tools to make it work. If your not running an offset sprocket you can get away with less work a.k.a. trimming.

The 91-95 Zx7 and a few others models are one of the few slave cylinders I've seen that uses only two mounting hole which makes life pretty easy. The center to center is larger than the stock clutch release by about 4-5MM so the first thing I did was get a small round file and elongate the holes. After some trial and error the cast in "tab" that keeps the hose from spinning needs to be ground flush (won't nee to be done for those with stock offset sprockets).

That takes care of the mods for the slave cylinder, so far so good. Next is what takes the most time, you will have to do some heavy grinding (or those with a milling machine about 2 mins of work) to get the slave cylinder to fit the sprocket cover. Again those with stock sprockets will have less grinding/milling to do. I had to completely grind out some of the webbing for the cylinder to fit. I also had to make a small relief in the backside of the cover because even with the grinding on the cylinder it wasn't enough for the slave cylinder to set perpendicular to the clutch pushrod.

The clutch release rod does have to be trimmed about 7/8" of an inch. (I didn't get a good measurement because I used trial and error and didn't measure that part of the process.) I also used the "rod cap" from the Zx7. The design of the cylinder's piston means you have to use this piece, or make something similar. The ID of the cap is slightly larger than the OD of the rod but I think it should OK.

I have not tried the setup as I need a clutch hose that's 10-12" longer.

Oh and total cost so far....$00.00 (thanks John at Cycle Analysis!)

Anyways, here are some pics....

Post edited by: StreetfighterKz, at: 2007/03/13 16:45

1978 z1000 Streetfighter
1976 z900 Stripfighter (work in progress)
1983 Gpz750 Resto-Mod
1989 Vmax

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