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MTC-G1135-3 Piston Kit 21 Jul 2017 07:51 #767426

  • daveo
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Great advice! I will update later. :)
1982 KZ1100-A2

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MTC-G1135-3 Piston Kit 21 Jul 2017 08:46 #767434

  • zippy61
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I've got the same setup you have but with the piston kit fitted,also ape studs and nuts.It's been fine for me but some people weld for peace of mind.I did twist a crank years ago when i missed a gear when revving my GS1000 hard.
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MTC-G1135-3 Piston Kit 21 Jul 2017 10:56 #767447

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Has anyone seen an 83/84 18mm pin crank welded from the factory ? Been told they don't exist but I've come across at least three out of stock GPZ 1100 engines. Still have two.

don
1974 Z1
1976 KZ900
1978 KZ1000
1981 KZ1000
1983 GPZ1100
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MTC-G1135-3 Piston Kit 21 Jul 2017 16:04 #767461

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gpz1170 wrote: Has anyone seen an 83/84 18mm pin crank welded from the factory ? Been told they don't exist but I've come across at least three out of stock GPZ 1100 engines. Still have two.

don


Anything else different besides pin diameter from the 17mm cranks?
1982 KZ1100-A2

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MTC-G1135-3 Piston Kit 21 Jul 2017 16:08 #767463

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zippy61 wrote: I've got the same setup you have but with the piston kit fitted,also ape studs and nuts.It's been fine for me but some people weld for peace of mind.I did twist a crank years ago when i missed a gear when revving my GS1000 hard.



With a 17mm crank and ZX1100/GPz camshafts?
1982 KZ1100-A2

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MTC-G1135-3 Piston Kit 22 Jul 2017 03:11 #767474

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17mm crank,which i had balanced.Also gpz1100b2 cams, didn't want it too peaky.I never got the crank balanced because of the piston kit, it got done when it was getting overhauled when i first got the bike.
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MTC-G1135-3 Piston Kit 22 Jul 2017 17:20 #767506

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no the crank are the same except for the rod ends, 18mm but the welding is puzzling
1974 Z1
1976 KZ900
1978 KZ1000
1981 KZ1000
1983 GPZ1100
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MTC-G1135-3 Piston Kit 22 Jul 2017 17:55 #767508

  • SWest
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Welded crank.
Steve
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MTC-G1135-3 Piston Kit 22 Jul 2017 19:09 #767512

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gpz1170 wrote: Has anyone seen an 83/84 18mm pin crank welded from the factory ? Been told they don't exist but I've come across at least three out of stock GPZ 1100 engines. Still have two.

don

No but I have done a couple when I was a Kawasaki tech replaced crank under Warranty but sent new crank out for welding I think Larry C has Done a few the same way back in the day.
1984 750 Turbo
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MTC-G1135-3 Piston Kit 22 Jul 2017 21:44 #767516

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17mm >< 18mm...:blink:

For what advantage?
1982 KZ1100-A2

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MTC-G1135-3 Piston Kit 23 Jul 2017 02:26 #767519

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daveo wrote: 17mm >< 18mm...:blink:

For what advantage?

Marginally stronger for the extra power of the unitrack spec motor .
They were thinking along the same lines as when they went to bigger pins on the mk2 crank.
Not a crucial upgrade though.
Plenty of very high hp motors running around on 17mm pins just fine.
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Last edit: by zed1015.

MTC-G1135-3 Piston Kit 24 Jul 2017 10:20 #767610

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DFIGPZ
I've had several cranks welded for race applications also but if you would put the 3 cranks with the ignition side facing you and the ignition alignment pins in the same position (say 12 o'clock) the welds would be in the exact position, same size and quality as if done in factory. All the motors seemed untouched. Interesting .

don
1974 Z1
1976 KZ900
1978 KZ1000
1981 KZ1000
1983 GPZ1100

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