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KZ650 rebuild/custom mod project 31 Jul 2015 02:36 #683565

  • RickKZ
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Leon, exactly!

Ill rather take my time with this one and get stuff done properly....
This weekend I plan to remove the motor so that will be another kettle of fish!

Busy designing a floating seat that we plan to have cut on the flow jet. Looking forward to that :)
KZ 650 mono shock rebuild project.
KZ 440 Ltd bobber build for my wife

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KZ650 rebuild/custom mod project 01 Aug 2015 08:05 #683750

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So as planned, removed the motor today!

Before:

Attachment IMG-20150801-00736.jpg not found




After:


Attachment IMG-20150801-00745.jpg not found

KZ 650 mono shock rebuild project.
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KZ650 rebuild/custom mod project 01 Aug 2015 08:08 #683751

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And some cleaning started. Decided to remove the valve cover just to peek for now.
Just as well! Like so many gremlins found thus far, found two bolts loose on the exhaust cam shaft :sick:

Maybe I need to strip and rebuild this motor cause this is becoming scary shit!


Attachment Exhaustcam.jpg not found



At least the valves look clean and overall, timing chain, cams etc seem to be in good condition.
KZ 650 mono shock rebuild project.
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KZ650 rebuild/custom mod project 01 Aug 2015 13:33 #683776

  • murr50
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it looks like some of those bolts holding the camshaft covers down are not stock. It is possible that the two loose bolts were actually stripped by the previous owner. the threads in these aluminum engines are very brittle... The first time i striped my engine down, i had to make a trip to the store for some helicoils.

I would remove the camshaft covers and check for wear on the camshaft journals. I think i see some wear in your photo where the shaft comes in contact with the buckets (#1, 7, &8).. possibly negligence by the prev owner. generally you dont want to see those wear marks...

Someone else should chime in on this soon though with a better idea
1977 kz650 C

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KZ650 rebuild/custom mod project 01 Aug 2015 14:47 #683789

  • Tyrell Corp
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I always replace with high tensile steel allen bolts, and dump the tourque wrench, trust your hands.

The bolts stretch, and even if you are good at these it often takes a second attempt to get the cam timing right...some of these may have been tightened and loosened dozens of times already.

Attachment 143846393122428.jpg not found

1980 Gpz550 D1, 1981 GPz550 D1. 1982 GPz750R1. 1983 z1000R R2. all four aces
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KZ650 rebuild/custom mod project 08 Aug 2015 02:58 #684880

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What a busy week!

Thanks for this info Tyrell Corp! I actually found one bolt which was stripped. The plan was to do as you suggested but now I will first need to have this stripped thread fixed.....Damn these people that work on machines and they don't know what they are doing :evil:
KZ 650 mono shock rebuild project.
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KZ650 rebuild/custom mod project 08 Aug 2015 04:24 #684885

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No doubt the threads are stripped because a previous owner dumped the torque wrench and trusted their hands. ;) I trust my torque wrenches and haven't had any stripped threads. :) Ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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KZ650 rebuild/custom mod project 23 Nov 2015 07:16 #700101

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So it has been a couple of months since I posted. Got a few things done but still lots to do!
As I was stripping and cleaning etc etc just relaised that this pony had quite a few non standard things going on. Grrrr

Done so far:
- Motor cleaned and repainted
- Frame cleaned and repainted.
- Seat relocated
- Front end stripped, cleaned and reassembled
- Motor back in frame


Attachment KZ650motor.jpg not found

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KZ650 rebuild/custom mod project 23 Nov 2015 07:45 #700105

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Oh yeah and some work done on the fuel tank.


Attachment IMG-20151111-01158Fueltank.jpg not found

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Re:KZ650 rebuild/custom mod project 23 Nov 2015 07:54 #700109

  • dom2570
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Wow, that is amazing!
Whip it like a mule!

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Re:KZ650 rebuild/custom mod project 23 Nov 2015 07:57 #700110

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Thanks!

Doing this one on a budget...Total cost so far about $270 including cost of bike :)
Tough part still coming! Redoing the wiring :/
KZ 650 mono shock rebuild project.
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KZ650 rebuild/custom mod project 23 Nov 2015 08:22 #700114

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RickKZ wrote: Oh yeah and some work done on the fuel tank.


Attachment IMG-20151111-01158Fueltank.jpg not found


Stunning, glad you are making some progress.

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