78 KZ 1000 build

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Re: 78 KZ 1000 build

06 Sep 2025 20:15
#916859
.418 lift and .282 duration degreed to 109° lobe center
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Re: 78 KZ 1000 build

07 Sep 2025 08:11 - 07 Sep 2025 08:12
#916865
Formula264 wrote:
.418 lift and .282 duration degreed to 109° lobe center

 
Sounds like the cams I just dialed in on my 1200 engine, a NOS set of RC400 Pro Stock cams.

Did you big valve the head? Flow rate??
1978 KZ650B2 w 1197cc Z1 engine
1977 KZ650B1 w 750cc Spectre engine
1979 KZ650C3 w 831cc Hot Rod engine
1978 KZ650C2 w 762cc DFI project
1977 KZ650C1 stock restoration project
1978 KZ650B2 modified project
1978 KZ650B2 Injected Drag 831cc
1980 Z1 Custom Frame Drag 1327cc
1981 Z50R Honda tow bike
Last edit: 07 Sep 2025 08:12 by Injected. Reason: sp

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Re: 78 KZ 1000 build

07 Sep 2025 16:09
#916879
Injected wrote:
Formula264 wrote:
.418 lift and .282 duration degreed to 109° lobe center


 
Sounds like the cams I just dialed in on my 1200 engine, a NOS set of RC400 Pro Stock cams.

Did you big valve the head? Flow rate??
Yes it has oversized valves
 

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Re: 78 KZ 1000 build

07 Sep 2025 16:10
#916880
What is your build?

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Re: 78 KZ 1000 build

08 Sep 2025 07:51
#916903
Formula264 wrote:
What is your build?
I see you are a fan of the 650, awesome that was my first street bike I bought brand new in 1977. Loved it and recently found one to restore.
 

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Re: 78 KZ 1000 build

08 Sep 2025 08:10 - 08 Sep 2025 08:13
#916905
Formula264 wrote:
What is your build?
I put a KZ1000 engine in a 1978 B2 that has GPZ550 wheels/brakes/forks.

The engine has MTC1197 10.5:1 pistons, welded crank, big valved Stage 2 ported head (flows 96/75 CFM@10") RC cams that have .420" lift 280 duration, stock clutch/tranny, custom oil cooler, and VM33 Smoothbore carbs.

I am running a air box and dual exhaust because I want it to look mostly stock.

www.kzrider.com/forum/11-projects/618809...e-transplant?start=0

I also have a 1977 C1 that I will restore one day, it is a low serial number and numbers matching bike.
1978 KZ650B2 w 1197cc Z1 engine
1977 KZ650B1 w 750cc Spectre engine
1979 KZ650C3 w 831cc Hot Rod engine
1978 KZ650C2 w 762cc DFI project
1977 KZ650C1 stock restoration project
1978 KZ650B2 modified project
1978 KZ650B2 Injected Drag 831cc
1980 Z1 Custom Frame Drag 1327cc
1981 Z50R Honda tow bike
Last edit: 08 Sep 2025 08:13 by Injected. Reason: info
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Re: 78 KZ 1000 build

09 Sep 2025 19:49
#916966
Cutting and welding to mount the 78 clocks to the ZRX head...
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