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PostPosted: Wed Feb 10, 2021 11:14 am 
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Joined: Tue Feb 09, 2021 5:42 am
Posts: 68
Location: Timmins ON, Canada
ThatGPzGuy wrote:
Do yourself a favor and send the crank out for rebuilding. You will want to start with a solid foundation and the initial cost, while :shock: will be forgotten when you are finished and enjoying it.

:shock: Must mean expensive, how much?

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Doug
1977 Kawasaki KZ650 being restored
1968 Honda CB450 Hellcat restored
1981 KZ440C recently restored
1974 H1E Restored and sold
2015 Kawasaki Vulcan S 650
2012 Polaris Sportsman
5 Good Months of Riding in my part of Canada


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PostPosted: Wed Feb 10, 2021 11:18 am 
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Location: Timmins ON, Canada
Jim wrote:
TracksH1F wrote:
The seals don't go bad from miles, they go bad from being nearly 50 years old.

I realize rubber doesn't last more than about 20 years, even the ones covered by engine covers (outside side) but especially the ones sitting with oil on them (inside side).

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Doug
1977 Kawasaki KZ650 being restored
1968 Honda CB450 Hellcat restored
1981 KZ440C recently restored
1974 H1E Restored and sold
2015 Kawasaki Vulcan S 650
2012 Polaris Sportsman
5 Good Months of Riding in my part of Canada


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PostPosted: Wed Feb 10, 2021 11:41 am 
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Joined: Wed Jun 08, 2011 11:34 pm
Posts: 9840
Location: North Central NC
A crank rebuild is somewhere in the $500-$1,000 range. We have a couple skilled and honest rebuilders here in the US, but you'll be better off asking on the Canadian board to find someone closer who is known to do good work.

https://triplescanada.proboards.com/

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If it surges, that's normal, upshift.


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PostPosted: Wed Feb 10, 2021 2:54 pm 
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Joined: Tue Feb 09, 2021 5:42 am
Posts: 68
Location: Timmins ON, Canada
Jim wrote:
A crank rebuild is somewhere in the $500-$1,000 range. We have a couple skilled and honest rebuilders here in the US, but you'll be better off asking on the Canadian board to find someone closer who is known to do good work.

https://triplescanada.proboards.com/

I've already joined the TriplesCanada site. Thanks.
I need to be enlightened on the crank rebuild. Having worked in one capacity or another in the mechanical field for thirty years, I have a good understanding of mechanical fundamentals and failures. I understand that after certain mileages or high stresses (ie racing) fatigue can set in and failures happen. Is there something about this engine that at 9000 miles the crank will need to be rebuilt? If all the journals are good, what would be done to the crank to rebuild it. I'm not trying to be cheap (although I am in some ways) I'm just trying to understand.

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Doug
1977 Kawasaki KZ650 being restored
1968 Honda CB450 Hellcat restored
1981 KZ440C recently restored
1974 H1E Restored and sold
2015 Kawasaki Vulcan S 650
2012 Polaris Sportsman
5 Good Months of Riding in my part of Canada


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PostPosted: Wed Feb 10, 2021 3:01 pm 
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Joined: Wed Jun 08, 2011 11:34 pm
Posts: 9840
Location: North Central NC
TracksH1F wrote:
Is there something about this engine that at 9000 miles the crank will need to be rebuilt?


The crank is pressed together, so to change the seals is has to be disassembled. At that point it can be measured and inspected, and if there are any other problems they can be corrected.

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If it surges, that's normal, upshift.


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PostPosted: Wed Feb 10, 2021 3:05 pm 
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Joined: Tue Feb 09, 2021 5:42 am
Posts: 68
Location: Timmins ON, Canada
Tackling the easy stuff first. Original exhaust is solid, happy about that. Most of the chrome has some pitting but most of it can be polished out. Previous owner seems to have scratched some of it (chain guard and mufflers) with too coarse a steel wool.
Polished, waxed and now stored for winter.


You do not have the required permissions to view the files attached to this post.

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Doug
1977 Kawasaki KZ650 being restored
1968 Honda CB450 Hellcat restored
1981 KZ440C recently restored
1974 H1E Restored and sold
2015 Kawasaki Vulcan S 650
2012 Polaris Sportsman
5 Good Months of Riding in my part of Canada


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PostPosted: Wed Feb 10, 2021 3:10 pm 
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Joined: Tue Feb 09, 2021 5:42 am
Posts: 68
Location: Timmins ON, Canada
Jim wrote:
TracksH1F wrote:
Is there something about this engine that at 9000 miles the crank will need to be rebuilt?


The crank is pressed together, so to change the seals is has to be disassembled. At that point it can be measured and inspected, and if there are any other problems they can be corrected.

Ah, the internal seals, I didn't know that was the only way to change them. All of my 2 strokes up until now have been one lungers.

_________________
Doug
1977 Kawasaki KZ650 being restored
1968 Honda CB450 Hellcat restored
1981 KZ440C recently restored
1974 H1E Restored and sold
2015 Kawasaki Vulcan S 650
2012 Polaris Sportsman
5 Good Months of Riding in my part of Canada


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PostPosted: Wed Feb 10, 2021 3:50 pm 
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Joined: Tue Feb 09, 2021 5:42 am
Posts: 68
Location: Timmins ON, Canada
I was just reading a tech article. It says to work on the engine, you have to take it apart before removing it from the frame. Can it not come out in one piece?

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Doug
1977 Kawasaki KZ650 being restored
1968 Honda CB450 Hellcat restored
1981 KZ440C recently restored
1974 H1E Restored and sold
2015 Kawasaki Vulcan S 650
2012 Polaris Sportsman
5 Good Months of Riding in my part of Canada


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PostPosted: Wed Feb 10, 2021 4:12 pm 
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Location: Front Royal, VA
It will come out in one piece.

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Stay in it when it comes on the pipe, no need to be scared...


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PostPosted: Wed Feb 10, 2021 7:34 pm 
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Joined: Tue Feb 09, 2021 5:42 am
Posts: 68
Location: Timmins ON, Canada
Tim Steele wrote:
It will come out in one piece.

So good to hear.

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Doug
1977 Kawasaki KZ650 being restored
1968 Honda CB450 Hellcat restored
1981 KZ440C recently restored
1974 H1E Restored and sold
2015 Kawasaki Vulcan S 650
2012 Polaris Sportsman
5 Good Months of Riding in my part of Canada


Top
 Profile  
 
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