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Prepare for sandblasting

  • gordone
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24 Nov 2017 10:27 #775014 by gordone
Prepare for sandblasting was created by gordone
I`m going to deliver my frame for sandblasting and paint next week.
I have inserted temp. bolts into the threads and I have used nuts over the treads to protect them.

I asume these is smart ?

But what do you do with the steering opening on top and button ? It must also be protected ?
I was thinking making some small woods pieces and use a long thread axle to keep them on place ?

But then will the wood also protect paint on the edge ?

I have attached what I mean, example from the to side, but was thinking doing the same on the button also ?

1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
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24 Nov 2017 11:09 #775016 by Nessism
Replied by Nessism on topic Prepare for sandblasting
I wouldn't do anything for the steering neck. The races will get pitted but that's no loss since you should install new bearings anyway.

I'd be sure to tape off the VIN label if you are trying to save it. Be careful though, because the tape you use will likely remove the clear mylar over the top of the label. You might want to talk to your powdercoater about how best to protect the label.

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  • gordone
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24 Nov 2017 12:04 #775019 by gordone
Replied by gordone on topic Prepare for sandblasting

Nessism wrote: I wouldn't do anything for the steering neck. The races will get pitted but that's no loss since you should install new bearings anyway.

I'd be sure to tape off the VIN label if you are trying to save it. Be careful though, because the tape you use will likely remove the clear mylar over the top of the label. You might want to talk to your powdercoater about how best to protect the label.


I understand, I can see there a metal ring attached to the frame, and the bearing is gliding on these metal ring, I should replace the metal ring also? So I`m let the metal ring be there under blasting and paint, then I can remove the ring after at the frame will me nice and clean on the inside for new ring and bearing?

I don`t have any VIN label, only the frame number :(

1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine

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24 Nov 2017 13:16 #775023 by Nessism
Replied by Nessism on topic Prepare for sandblasting
No metal ring that I'm aware of. Did you check the parts fishe? Are you talking about the outer bearing race? If so, those need to be replaced (fun task...not).

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  • gordone
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24 Nov 2017 13:49 #775024 by gordone
Replied by gordone on topic Prepare for sandblasting

Nessism wrote: No metal ring that I'm aware of. Did you check the parts fishe? Are you talking about the outer bearing race? If so, those need to be replaced (fun task...not).


hehe based on "fun task.. not" I think we are talking about the same thing :)
They are nice to remove before blasting and painting?

Why is not the bearings and the outer bearing race not on the diagram for the fork?
www.partzilla.com/catalog/kawasaki/motor...ont-fork-81-82-h1-h2

1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine

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24 Nov 2017 14:13 #775025 by Wozza
Replied by Wozza on topic Prepare for sandblasting

gordone wrote:
Why is not the bearings and the outer bearing race not on the diagram for the fork?
www.partzilla.com/catalog/kawasaki/motor...ont-fork-81-82-h1-h2


there on the frame page
www.partzilla.com/catalog/kawasaki/motor...h1/frame-81-82-h1-h2

1982 KZ550H1

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  • gordone
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24 Nov 2017 14:47 #775029 by gordone
Replied by gordone on topic Prepare for sandblasting

Wozza wrote:

gordone wrote:
Why is not the bearings and the outer bearing race not on the diagram for the fork?
www.partzilla.com/catalog/kawasaki/motor...ont-fork-81-82-h1-h2


there on the frame page
www.partzilla.com/catalog/kawasaki/motor...h1/frame-81-82-h1-h2


ahh.... :)

I just the picture bad or ? the bearings I have (2) don`t looks like these?
MIne looks like these, please see attached photo.

1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
Attachments:

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24 Nov 2017 15:22 - 24 Nov 2017 15:24 #775031 by Wozza
Replied by Wozza on topic Prepare for sandblasting
Yours have been upgraded to tapered roller bearings .they are better than the old bicycle type.
You shouldn't have a problem getting a kit for your bike if they need replacing.

1982 KZ550H1
Last edit: 24 Nov 2017 15:24 by Wozza.

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  • gordone
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24 Nov 2017 15:32 - 24 Nov 2017 15:33 #775032 by gordone
Replied by gordone on topic Prepare for sandblasting

Wozza wrote: Yours have been upgraded to tapered roller bearings .they are better than the old bicycle type.
You shouldn't have a problem getting a kit for your bike if they need replacing.


Ahh okey... then I have some questions :)

1. Must I measure the bearings manual to be able to order new ones?

2. How can I check what condition they are into? maybe I can reuse them?

3. Please see attached photo, there a ring (between the two red circles) and these ring is coned, and the bearings is gliding on it,
I think it`s identical on the bottom also, because the bearing is the same for top and bottom. Maybe the ring is 1,-1,5cm with/deep, same with as the bearing...

I guess I need to protect these ring under sand blasting ?

OR can I just replace the ring, easy ? I think I will let it stay ?

1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
Attachments:
Last edit: 24 Nov 2017 15:33 by gordone.

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25 Nov 2017 05:35 - 25 Nov 2017 05:36 #775042 by mopguy
Replied by mopguy on topic Prepare for sandblasting
I doubt you will be able to save your VIN sticker, so take a few good pictures of it and then you can have them reproduced by a member here that reproduces the VIN stickers, at the moment I am not sure of our member log in name, but it may be Kidkawie, if not I am sure other members will know.

I have a 1980 Kawasaki KZ750 Ltd. I bought new. I recently managed to get it out of my garage after 28 years and put it on the road again (2010). I feel like a kid all over again. Since I have acquired 3 78 KZ1000 Ltd, 1 1981 KZ1000 Ltd, and another 1980 KZ750 Ltd. Love the LTD's.
Last edit: 25 Nov 2017 05:36 by mopguy.

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  • bluej58
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25 Nov 2017 06:20 #775044 by bluej58
Replied by bluej58 on topic Prepare for sandblasting
If done right your tapered bearings should last a life time, mine have over 75,000 on them and no problems.

If they are greased well and have no rust on them they should be fine.

78 KZ1000 A2A

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  • gordone
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25 Nov 2017 08:45 #775048 by gordone
Replied by gordone on topic Prepare for sandblasting

bluej58 wrote: If done right your tapered bearings should last a life time, mine have over 75,000 on them and no problems.

If they are greased well and have no rust on them they should be fine.


I understand, thank you.
Talking with the painting i will block the opening top and button and he will blast the frame and then manual take what is left when the blocking is removed.

1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine

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