KZ650 Frame Bracing??

  • cherrymetal
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KZ650 Frame Bracing??

21 Aug 2008 01:16
#233227
I'm after some advice in bracing up my frame in preparation for the more powerful GPz750 engine I'm going to fit (which will probably get taken out to 810 in the future).

With the modern running gear I have for it and the powerful engine, the frame will then be the weakest link.

I'm thinking of gusseting around the headstock, to replace the thin material that currently does that job, with 1/4 plate, is that the right thing to do?

Also a brace across the tubing that joins the cradle to the subframe.

And also a brace across the subframe itself, roughly across where the shock mounts - cos I reckon with hard cornering, with a twin shock set up there could be a tendency to try to twist the subframe??

Any advice (with pics if possible!) would be greatly appreciated.

Cheers
_____________________________________________________
1977 Z650 (WIP - GPz750 Engine, RF400 Wheels & brakes, Bandit 600 Forks, Zephyr Swingarm)
1997 ZRX1100 - Stock - for now!(except for Hindle header with Micron carbon can)
1988 NTV600 Revere - Stock (work hack!)

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  • StreetfighterKz
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Re: KZ650 Frame Bracing??

21 Aug 2008 04:36
#233237
1/4" plate is going to be way overkill and way heavy. I used something 3/32" thick plate or 3/4" x.065" tube for the gusseting on my project . Of course my bracing will be a little different due to the mono-shock but near the headstock and back bones it should all be the same. Do a search on here for frame bracing and you should get some decent results. You might not see many 650's braced but the basic theories apply.

Later, Doug
1978 z1000 Streetfighter
1976 z900 ‘Stripfighter
1978 z1000 w/RC Turbo
1979 z650 Resto-Mod
1983 Gpz750 Resto-Mod
2018 Z900RS

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  • donthekawguy
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Re: KZ650 Frame Bracing??

21 Aug 2008 17:11
#233339
Find the site that sells the kit and just copy the kit they have. I did it for around $30.
Rathdrum Idaho
1971 Kawasaki g3ss
1972 Yamaha R5 350
1965 Suzuki Hillbilly
1964 Yamaha 125

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  • Paling1
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Re: KZ650 Frame Bracing??

22 Aug 2008 03:55 - 22 Aug 2008 03:57
#233412
A few days ago I found some links to a Japanese site, where I found this PDF

Unfortunately I can't read or speak Japanese, but the pics in this PDF show a very nice way to brace a Kawasaki frame.

Also check this out. There are some nice pics on there...

Like these:

KZ700-A1 (1984)
525 chain conversion; Dyna 2,2 ohm coils; Taylor plugwires; Stainless steel ZR-7 exhaust ; Remus muffler.
Plans: GPZ cams, ported head, 17 inch wheels, EFI....
Last edit: 22 Aug 2008 03:57 by Paling1.

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