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Make a slow bike fast - KZ750 Twin 05 Apr 2021 22:40 #846246

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After talking to a guy in Canada about the KZ750 twin he races I have decided to build an all out track/race version of my own. I have been slowly accumulating parts for the engine and recently picked up a complete chassis for the build. Its the roughest bike I have ever bought. Literally everything, except the frame and the engine cases, will be sold or junked.For $100 with a title I don't think I can go wrong.

I have never done any road racing. I've done a couple track days and loved it but it is expensive and hard to get out there. Right now the plan is to build a track bike that will see the street once in a blue moon. In reality this project will mostly be an excuse for me to make cool shit and make poor financial decisions. That being said; most of the modifications I plan on doing should be legal for WERA Vintage 5/6 should I choose to race down the road. Goal is 80-85HP to the wheel and around 375-390 lbs.

This thread will proceed rather slowly at first, but I'm starting it now so I can document things as they happen rather than trying to dig up photos and info down the road. Stay tuned for vigorous turd polishing.

 


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Make a slow bike fast - KZ750 Twin 06 Apr 2021 05:26 #846252

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Good on you for saving that one. It looks like it has been lying at the bottom of Lake Ugly for a couple of decades.
I should be buying stock in your favorite rust penetrant.
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

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Make a slow bike fast - KZ750 Twin 06 Apr 2021 05:51 #846253

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I'm on board for this one. 
Jim
North GA
2016 Yamaha FJR1300ES
1982 GPz750 R1
1974 Kawasaki H1
1976 Kawasaki KZ400
1979 Yamaha XS650 cafe'
2001 KZ1000P
2001 Yamaha YZ426
1981 Honda XR200 stroked in an '89 CR125 chassis
1965 Mustang
1967 Triumph GT6
1976 Bronco
"If you didn't build it, it's not really yours"

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Make a slow bike fast - KZ750 Twin 06 Apr 2021 06:01 #846254

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Staying tuned...
1973 Honda CL70-K3
1975 Kawasaki 350 F9-C
1983 Kawasaki KZ750-K1
1994 BMW K1100RS
2008 Suzuki GSX1300-BKK8 #1120

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Make a slow bike fast - KZ750 Twin 06 Apr 2021 07:07 #846258

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I'm in. I love a good race bike build.
Don't be ridiculous! It's only a flesh wound!

Wife's little bike... 1984 GPZ 550 Kerker and DynaJet stage I kit
Wife's BIG bike...... 1981 GPZ 1100 Kerker and factory FI Mikuni RS34s W/ K&N pods

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Make a slow bike fast - KZ750 Twin 07 Apr 2021 04:06 #846313

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Looking forward to seeing this develop as im in the same place with my own. The debate of will i wont put money into the engine is nagging me. Nice to see we are starting off with fairly rotten bike conditions as well. Subscribed!
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Make a slow bike fast - KZ750 Twin 07 Apr 2021 11:18 #846342

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And here I was thinking I started with real bad pile of rot!  Thanks for making me feel better, guys!  
Retired gearhead
'81 KZ-750 E2
'86 Suzuki Savage 650

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Make a slow bike fast - KZ750 Twin 03 May 2021 10:52 #847932

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I bored the new set of cases this weekend. I'm now prepping the cases for paint. I was thinking black for the cases but part of me wants to paint them gold like the '83 Wayne Rainey GPZ. I got a bunch of colors from Gun Kote and sprayed them out. I'm not in love with any of them - still on the fence.

 
 
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Make a slow bike fast - KZ750 Twin 03 May 2021 10:55 #847933

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Make a slow bike fast - KZ750 Twin 03 May 2021 11:11 #847934

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Here is a close up of the GPz750 motor from the Rob Muzzy built Superbike of Wayne Rainey.
I always thought the gold cases looked pretty neat on those bikes.
I took this photo at Daytona 1983.
 
1972 H2 750 Cafe Racer built in 1974.
1976 KH400 Production Road Racer.
1979 Kz1000 MK. II Old AMA/WERA Superbike.
1986 RG500G 2 stroke terror.
1986 GSXR750RG The one with the clutch that rattles!

Up in the hills near Prescott, Az.
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Make a slow bike fast - KZ750 Twin 03 May 2021 11:44 #847935

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Yeah that looks really good. The only problem is the 750 twin cases are kinda ugly with the starter motor out front. Maybe its not something i should highlight.

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Make a slow bike fast - KZ750 Twin 03 May 2021 20:42 #847954

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Here is a close up of the GPz750 motor from the Rob Muzzy built Superbike of Wayne Rainey.
I always thought the gold cases looked pretty neat on those bikes.
I took this photo at Daytona 1983.
      

I see a dual plug head
 

2002 ZRX1200R
81 GPz1100
79 KZ1000st daily ride
79 KZ1000mk2 prodject
78 KZ650sr
78 KZ650b
81 KZ750e
80 KZ750ltd
77 KZ400/440 cafe project
76 KZ400/440 Fuel Injected

www.dotheton.com/forum/index.php?topic=39120.0


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