KZ440 belt to chain drive

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20 May 2024 16:02 - 20 May 2024 16:04 #899415 by Grcko
KZ440 belt to chain drive was created by Grcko
I am swapping out my belt drive to a chain. I have the chain drive swing arm. I found out the swing arm is narrower than the belt one and the belt axle is to long. I was wondering if there is a different axel for the chain drive models. Any ideas would help as this is a daily rider and runs like a dream. Thanks. 

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As Always,

1983 KZ440
Last edit: 20 May 2024 16:04 by Grcko.

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20 May 2024 17:15 - 20 May 2024 17:31 #899428 by JR
Replied by JR on topic KZ440 belt to chain drive
If you cant find the correct axle then a last resort may be to find the right die and just extend the existing threaded section and cut off the excess. 

or bring the bolt/axle to a machine shop and tell them what you want.
1980 kz750E1, Delkevic exhaust
Last edit: 20 May 2024 17:31 by JR.

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20 May 2024 18:32 #899434 by Grcko
Replied by Grcko on topic KZ440 belt to chain drive
That is what I was thinking might be the easiest way to go.  
As Always,

1983 KZ440

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20 May 2024 19:25 #899435 by JR
Replied by JR on topic KZ440 belt to chain drive
There are a few on ebay at the moment. Unsure how to distinguish belt from chain type. At least one of those on offer includes a measurement
1980 kz750E1, Delkevic exhaust

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20 May 2024 21:07 #899436 by sf4t7
Replied by sf4t7 on topic KZ440 belt to chain drive
Or use a spacer on the axle to make up the difference.  ( 1 on each end might look better)

Scotty

1974 Z1A
1015
welded Z1 crank
Andrews 1X Cams
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Superbike bars
530 conversion

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20 May 2024 21:24 #899437 by TexasKZ
Replied by TexasKZ on topic KZ440 belt to chain drive
You couldn’t just swap out the pulleys and belt for the sprockets and chain, using the existing swingarm and such? That is what I did when I converted my belt drive 750.
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

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21 May 2024 13:34 #899475 by F64
Replied by F64 on topic KZ440 belt to chain drive
Yeah, I swapped an 81 kz440 D2 LTD Belt with just sprokets and a chain. You'll have to cut off a belt guard mount but it has been fine.
81-KZ440-D2.
Louis Dudzik's GM HEI ignitor conversion installed 2015 s3.amazonaws.com/gpzweb/Ignition/GPZgmHEImod.html
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LIC, NY

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21 May 2024 15:38 #899481 by Grcko
Replied by Grcko on topic KZ440 belt to chain drive
The chain hits the belt guard mounts on the belt swing arm. The chain swing arm has different  mounts for the guard and uses a different guard. 
As Always,

1983 KZ440

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21 May 2024 16:42 #899492 by TexasKZ
Replied by TexasKZ on topic KZ440 belt to chain drive
Seems like cutting off one chain guard mount would be less hassle than making wheel spacers and such.
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough
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03 Jun 2024 18:49 #900187 by Grcko
Replied by Grcko on topic KZ440 belt to chain drive
Well, I went with the spacer option. Doesn’t look too bad. I put the chain I had on and set it all to specs. I started it up and ran it for a few minutes and all seemed good. 
Now for a newbie question. When a chain  says it is 106 links; is that actual links or pin count?  I do want to get a new chain as the old one is a bit rough. 
 
As Always,

1983 KZ440

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03 Jun 2024 19:22 #900190 by Nerdy
Replied by Nerdy on topic KZ440 belt to chain drive
Chain and sprockets really should be replaced as a set, unless the existing items are close to new.

They wear in together and (for example) putting a new chain on worn sprockets will prematurely wear the chain.
1979 KZ400 Gifted to a couple of nephews
1967 Yamaha YCS1 Bonanza
1980 KZ440B
1981 Yamaha XT250H
1981 KZ440 LTD project bike
1981 GPz550
2013 Yamaha FZ6R
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22 Jun 2024 20:48 #901153 by Grcko
Replied by Grcko on topic KZ440 belt to chain drive
Finally got all the parts on Thursday and put it all together. I rode it 20 miles to work and 20 miles home  and it all works well. It does run 500 rpm more than it did before at 70mph due to front sprocket being smaller compared to the belt pulley. 
I am very pleased with the results. 
Thanks for the help with this. 
 
As Always,

1983 KZ440

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