Seized Engine 1982 KZ750 CSR (M1)

  • Duckinfumb
  • Duckinfumb's Avatar Topic Author
  • Offline
  • User
  • User
    Registered
  • Posts: 28
  • Thanks: 0

Re: Seized Engine 1982 KZ750 CSR (M1)

12 Jun 2019 20:06
#805621
I couldn't find anything on the counter balance system. Where should I be looking at on the internet/the bike?

For real thank you guys for your help already.
1982 KZ1000
1982 KZ750 M1 (CSR) twin *RIP*

Please Log in or Create an account to join the conversation.

  • TexasKZ
  • TexasKZ's Avatar
  • Offline
  • Platinum Member
  • Platinum Member
    Registered
  • Posts: 7936
  • Thanks: 2510

Re: Seized Engine 1982 KZ750 CSR (M1)

12 Jun 2019 20:23
#805622
This will be a valuable tool moving forward.

www.kzrider.com/modules/ServiceManuals/K...l%20KZ750%20Twin.pdf
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

www.kzrider.com/11-projects/620336-anoth...uild-thread?start=24
The following user(s) said Thank You: Duckinfumb

Please Log in or Create an account to join the conversation.

  • TexasKZ
  • TexasKZ's Avatar
  • Offline
  • Platinum Member
  • Platinum Member
    Registered
  • Posts: 7936
  • Thanks: 2510

Re: Seized Engine 1982 KZ750 CSR (M1)

12 Jun 2019 20:27
#805623
Here is an exploded view of the innards. The counterbalancer shafts live below the crankshaft and are driven by that chain.

www.partzilla.com/catalog/kawasaki/motor.../crankshaft-balancer
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

www.kzrider.com/11-projects/620336-anoth...uild-thread?start=24
The following user(s) said Thank You: Duckinfumb

Please Log in or Create an account to join the conversation.

  • loudhvx
  • loudhvx's Avatar
  • Offline
  • KZr Legend
  • KZr Legend
    Registered
  • Posts: 10864
  • Thanks: 1619

Re: Seized Engine 1982 KZ750 CSR (M1)

12 Jun 2019 20:27
#805624
Try the rear wheel backward I described above. If it's something that can be undone, it will be a clue.

No shavings with plenty of oil is good news.
1981 KZ550 D1 gpz.
Kz550 valve train warning.
Other links.

Please Log in or Create an account to join the conversation.

  • SWest
  • SWest's Avatar
  • Offline
  • Sustaining Member
  • Sustaining Member
    Registered
  • 10 22 2014
  • Posts: 23418
  • Thanks: 2909

Re: Seized Engine 1982 KZ750 CSR (M1)

12 Jun 2019 20:33 - 12 Jun 2019 20:34
#805625
I had one in my bay in the late 80's with that same problem. I don't remember if it was under the right or left engine cover. It had come apart and the bike hopped around like a stung rabbit.
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
Last edit: 12 Jun 2019 20:34 by SWest.
The following user(s) said Thank You: Duckinfumb

Please Log in or Create an account to join the conversation.

  • Scirocco
  • Scirocco's Avatar
  • Offline
  • Premium Member
  • Premium Member
    Registered
  • Never change a running system
  • Posts: 4420
  • Thanks: 2268

Re: Seized Engine 1982 KZ750 CSR (M1)

13 Jun 2019 02:28 - 13 Jun 2019 02:29
#805633
If the counter balance system is shot it could be seized the engine.




www.z750twin.de/getriebe.htm
My 1975 Z 1 B 900 Project

www.kzrider.com/forum/11-projects/605133...ears-deep-sleep-mode

Attachments:

Last edit: 13 Jun 2019 02:29 by Scirocco.
The following user(s) said Thank You: Duckinfumb

Please Log in or Create an account to join the conversation.

  • Duckinfumb
  • Duckinfumb's Avatar Topic Author
  • Offline
  • User
  • User
    Registered
  • Posts: 28
  • Thanks: 0

Re: Seized Engine 1982 KZ750 CSR (M1)

13 Jun 2019 08:38
#805653
loudhvx wrote: Try the rear wheel backward I described above. If it's something that can be undone, it will be a clue.

No shavings with plenty of oil is good news.

I don't have a center stand, but she will roll backwards pretty freely (there is a little pressure) in first gear with no spark plugs.
1982 KZ1000
1982 KZ750 M1 (CSR) twin *RIP*

Please Log in or Create an account to join the conversation.

  • loudhvx
  • loudhvx's Avatar
  • Offline
  • KZr Legend
  • KZr Legend
    Registered
  • Posts: 10864
  • Thanks: 1619

Re: Seized Engine 1982 KZ750 CSR (M1)

13 Jun 2019 08:54 - 13 Jun 2019 08:59
#805654
So are you saying you can hear the pistons moving up and down when you roll the bike backward in gear? But if you go forward it will move a bit then lockup?

I would remove the little ignition cover on the right side. That has a bolt holding the advancer that can cone loose as well.

And I suppose next would be the entire clutch cover or oil pan but those are far less convenient to remove. I wonder if there is anything goofy under the sprocket cover...that's pretty easy to pull off.
1981 KZ550 D1 gpz.
Kz550 valve train warning.
Other links.
Last edit: 13 Jun 2019 08:59 by loudhvx.

Please Log in or Create an account to join the conversation.

  • Duckinfumb
  • Duckinfumb's Avatar Topic Author
  • Offline
  • User
  • User
    Registered
  • Posts: 28
  • Thanks: 0

Re: Seized Engine 1982 KZ750 CSR (M1)

13 Jun 2019 09:29 - 13 Jun 2019 09:32
#805657
loudhvx wrote: So are you saying you can hear the pistons moving up and down when you roll the bike backward in gear? But if you go forward it will move a bit then lockup?

I went back out and put my clutch back together, threw it in first, and I can roll it backwards with my clutch engaged. The spark plugs are out and I can hear my engine give a little sigh and she gives me some resistance when I do it. I can go as far backward AND forward doing this as I want to.
My kickstart swings with an engaged clutch as well, idk if that matters.
1982 KZ1000
1982 KZ750 M1 (CSR) twin *RIP*
Last edit: 13 Jun 2019 09:32 by Duckinfumb.

Please Log in or Create an account to join the conversation.

  • loudhvx
  • loudhvx's Avatar
  • Offline
  • KZr Legend
  • KZr Legend
    Registered
  • Posts: 10864
  • Thanks: 1619

Re: Seized Engine 1982 KZ750 CSR (M1)

13 Jun 2019 09:48 - 13 Jun 2019 09:55
#805661
Ok, so there is no oil in it anymore, correct, so you don't want to do a lot of crank rotating quickly, but normally it's safe to turn by hand slowly.

The bolt that holds the rotor/flywheel on is usually the strongest bolt for turning the crank by hand. So you can put the bike in neutral and rotate the engine with a good socket wrench from there. The crank should rotate opposite direction of the wheels.
This will let you feel if there are any rough spots while turning. The camshafts will give some smooth resistance and pushes, but with the plugs out, it shouldn't bind and nothing should feel rough.

If you have some new motorcycle oil laying around, and it would make you comfortable, you can add some so the pump will put oil into the bearings.

I always put a note to myself over the ignition switch to remind me there is no oil if I have to leave it empty. People often forget and might start a bike without oil. I've come close a few times. (I try not to let a bike sit around without oil if I can help it.)
1981 KZ550 D1 gpz.
Kz550 valve train warning.
Other links.
Last edit: 13 Jun 2019 09:55 by loudhvx.
The following user(s) said Thank You: baldy110, Duckinfumb

Please Log in or Create an account to join the conversation.

  • loudhvx
  • loudhvx's Avatar
  • Offline
  • KZr Legend
  • KZr Legend
    Registered
  • Posts: 10864
  • Thanks: 1619

Re: Seized Engine 1982 KZ750 CSR (M1)

13 Jun 2019 09:55 - 13 Jun 2019 09:57
#805662
The plug holes should make a swoop sound as the pistons move up and down completely.

Again check under the ignition cover and sprocket cover as those won't leak any oil.

Rotating the crank will rotate the balance shafts and clutch basket.

To check the trans you would need a stand for the back of the bike.
1981 KZ550 D1 gpz.
Kz550 valve train warning.
Other links.
Last edit: 13 Jun 2019 09:57 by loudhvx.

Please Log in or Create an account to join the conversation.

  • Duckinfumb
  • Duckinfumb's Avatar Topic Author
  • Offline
  • User
  • User
    Registered
  • Posts: 28
  • Thanks: 0

Re: Seized Engine 1982 KZ750 CSR (M1)

13 Jun 2019 10:46 - 13 Jun 2019 11:05
#805666
loudhvx wrote: Ok, so there is no oil in it anymore, correct, so you don't want to do a lot of crank rotating quickly, but normally it's safe to turn by hand slowly.

The bolt that holds the rotor/flywheel on is usually the strongest bolt for turning the crank by hand. So you can put the bike in neutral and rotate the engine with a good socket wrench from there. The crank should rotate opposite direction of the wheels.
This will let you feel if there are any rough spots while turning. The camshafts will give some smooth resistance and pushes, but with the plugs out, it shouldn't bind and nothing should feel rough.

If you have some new motorcycle oil laying around, and it would make you comfortable, you can add some so the pump will put oil into the bearings.

I always put a note to myself over the ignition switch to remind me there is no oil if I have to leave it empty. People often forget and might start a bike without oil. I've come close a few times. (I try not to let a bike sit around without oil if I can help it.)

I put the rest of what oil I had in the bike just to be safe. I would absolutely be the one to fix this, then forget it doesn't have oil (dang short term memory lol) and immediately break it again..

The motor rotates smooth in both directions.

I also took the ignition cover off and the bolt is secure. (I had a stripped screw and didn't want to deal with it. Lol)
1982 KZ1000
1982 KZ750 M1 (CSR) twin *RIP*
Last edit: 13 Jun 2019 11:05 by Duckinfumb.

Please Log in or Create an account to join the conversation.

Moderators: Street Fighter LTD
Powered by Kunena Forum