Cracks in case
- TomW
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Cracks in case
12 Feb 2011 17:58
I got my cases split tonight. All the internal parts look new or nearly so. However after cleaning the upper case in the parts washer I came upon this bearing seat. It's #5 from the right. 
The biggest crack extends down the side of the web about 1/2". I found the pin in the parts washer intact. I have no idea how long it's been this way. The bike has about 18'000 miles on it. Anyone seen this before? What causes it and what do I do now to fix it?

The biggest crack extends down the side of the web about 1/2". I found the pin in the parts washer intact. I have no idea how long it's been this way. The bike has about 18'000 miles on it. Anyone seen this before? What causes it and what do I do now to fix it?
'78 KZ1000B2 LTD stock + Vetter Fairing & luggage
'91 ZG1200B5 Voyager XII, stock
'91 ZG1200B5 Voyager XII, stock
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- TomW
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Re: Cracks in case
12 Feb 2011 18:24
'78 KZ1000B2 LTD stock + Vetter Fairing & luggage
'91 ZG1200B5 Voyager XII, stock
'91 ZG1200B5 Voyager XII, stock
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- andy9802gt
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Re: Cracks in case
12 Feb 2011 18:51
I would guess excessive endplay. Looks like time for new cases.

'78 KZ1075 LTD
stage 1 head by Larry Cavanaugh
race built crank by John Pearson
Mikuni rs34's
k410 cams
back cut tranny
8" over D&G swinger
proving once again that age and treachery is better than youth and enthusiasm
stage 1 head by Larry Cavanaugh
race built crank by John Pearson
Mikuni rs34's
k410 cams
back cut tranny
8" over D&G swinger
proving once again that age and treachery is better than youth and enthusiasm
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- TeK9iNe
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Re: Cracks in case
12 Feb 2011 19:11
I have a guy that TIG welds stuff like that for me all the time. You're fine, :laugh: stop worrying and pick up the phone. Just call around for a guy whos repaired aluminum heads, etc.
You dont need to replace anything, just repair. It will require some cleanup/finish work, but its alot cheaper than buying new cases!
You dont need to replace anything, just repair. It will require some cleanup/finish work, but its alot cheaper than buying new cases!

Motorcycle Shop Owner/Operator
79 Kawie Z1000 LTD
81 Kawie Z1000 CSR
83 Honda VT750C A
85 Kawie GPZ900 A2
86 Zukie GS1150 EG
93 Yamie XV1100 E
Lucky to have rolled many old bikes through my doors
79 Kawie Z1000 LTD
81 Kawie Z1000 CSR
83 Honda VT750C A
85 Kawie GPZ900 A2
86 Zukie GS1150 EG
93 Yamie XV1100 E
Lucky to have rolled many old bikes through my doors

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- TomW
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Re: Cracks in case
12 Feb 2011 19:44
I like your solution better than replace the cases. However when it rains it pours. I put the pin back in and wiggled it around a little and TINK!!
It was only holding together by a thread. How good is your welding guy? I'll be on the phone Monday.

'78 KZ1000B2 LTD stock + Vetter Fairing & luggage
'91 ZG1200B5 Voyager XII, stock
'91 ZG1200B5 Voyager XII, stock
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- TomW
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Re: Cracks in case
12 Feb 2011 19:46
'78 KZ1000B2 LTD stock + Vetter Fairing & luggage
'91 ZG1200B5 Voyager XII, stock
'91 ZG1200B5 Voyager XII, stock
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- TeK9iNe
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Re: Cracks in case
12 Feb 2011 20:14
"If it hurts when you do that, then dont do that" :woohoo:
Its really not that bad. You can have that fixed up for practically nothing.
Its really not that bad. You can have that fixed up for practically nothing.

Motorcycle Shop Owner/Operator
79 Kawie Z1000 LTD
81 Kawie Z1000 CSR
83 Honda VT750C A
85 Kawie GPZ900 A2
86 Zukie GS1150 EG
93 Yamie XV1100 E
Lucky to have rolled many old bikes through my doors
79 Kawie Z1000 LTD
81 Kawie Z1000 CSR
83 Honda VT750C A
85 Kawie GPZ900 A2
86 Zukie GS1150 EG
93 Yamie XV1100 E
Lucky to have rolled many old bikes through my doors

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- PLUMMEN
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Re: Cracks in case
12 Feb 2011 21:17
find some new cases,by the time you get it hot enough to weld it will need to be line bored would be my guess. $$$$$$$$

Still recovering,some days are better than others.
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- Old Man Rock
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Re: Cracks in case
13 Feb 2011 06:45
Hell, used cases are ~ $100 these days....
Don't ask how I know this.... :blush:
Here in AZ, title is only off the stamped frame numbers... Not sure in your area.... May want to check out and figure what your game plan is...
As already mentioned, you can have it repaired but I seriously doubt you'll get it for the same price ~ $100...
Good luck
OMR
Don't ask how I know this.... :blush:
Here in AZ, title is only off the stamped frame numbers... Not sure in your area.... May want to check out and figure what your game plan is...
As already mentioned, you can have it repaired but I seriously doubt you'll get it for the same price ~ $100...
Good luck
OMR
1976 KZ900-A4
MTC 1075cc.
Camshafts: Kawi GPZ-1100 .375 lift
Head: P&P via Larry Cavanaugh
ZX636 suspension
MIKUNI, RS-34'S...
Kerker 4-1, 1.5" comp baffle.
Dyna-S E.I.
Earls 10 row Oil Cooler
Acewell 2802 Series Speedo/Tach
Innovate LC1 Wideband 02 AFR meter
Phoenix, Az
MTC 1075cc.
Camshafts: Kawi GPZ-1100 .375 lift
Head: P&P via Larry Cavanaugh
ZX636 suspension
MIKUNI, RS-34'S...
Kerker 4-1, 1.5" comp baffle.
Dyna-S E.I.
Earls 10 row Oil Cooler
Acewell 2802 Series Speedo/Tach
Innovate LC1 Wideband 02 AFR meter
Phoenix, Az
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- TomW
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Re: Cracks in case
13 Feb 2011 09:37
Can you point me to a source for $100 used cases? If I truly can find a set for a C-note or there-abouts I won't hesitate one second.
'78 KZ1000B2 LTD stock + Vetter Fairing & luggage
'91 ZG1200B5 Voyager XII, stock
'91 ZG1200B5 Voyager XII, stock
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- DoubleDub
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Re: Cracks in case
13 Feb 2011 10:05 - 13 Feb 2011 10:07
No eBay APP ID and/or Cert ID defined in Kunena configuration$129.99 + Shipping ($25) Buy it now:
cgi.ebay.com/ebaymotors/1973-79-Kawasaki...sories#ht_1437wt_702
Testing ebay thingy:
cgi.ebay.com/ebaymotors/1973-79-Kawasaki...sories#ht_1437wt_702
Testing ebay thingy:
Last edit: 13 Feb 2011 10:07 by DoubleDub. Reason: Ebay thingy again
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- TomW
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Re: Cracks in case
13 Feb 2011 10:26 - 13 Feb 2011 10:28
It's my understanding that the cases are machined as a set, top and bottom together. What are the odds of a '74 900 Z-1 matching up to a '78 KZ1000? The price is attractive tho. Thanks for the link. I'll send a question to the seller to see if he has the bottom half.
How 'bout them Badgers :woohoo:
How 'bout them Badgers :woohoo:
'78 KZ1000B2 LTD stock + Vetter Fairing & luggage
'91 ZG1200B5 Voyager XII, stock
'91 ZG1200B5 Voyager XII, stock
Last edit: 13 Feb 2011 10:28 by TomW.
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