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KZ440 Engine Swap into KZ305 Bike. 07 Mar 2023 23:57 #881234

  • KaosKontrol
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I have one of the trash ebay pistons and I have my old piston that grenaded on me. Which one would you prefer? Or I can just send both.

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Last edit: by KaosKontrol.

KZ440 Engine Swap into KZ305 Bike. 08 Mar 2023 18:02 #881267

  • Nebr_Rex
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The ebay piston.
E mail me for my address.

 
2002 ZRX1200R
81 GPz1100
79 KZ1000st daily ride
79 KZ1000mk2 prodject
78 KZ650sr
78 KZ650b
81 KZ750e
80 KZ750ltd
77 KZ400/440 cafe project
76 KZ400/440 Fuel Injected

www.dotheton.com/forum/index.php?topic=39120.0


.

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Last edit: by Nebr_Rex. Reason: Why is my pm not working?

KZ440 Engine Swap into KZ305 Bike. 09 Mar 2023 10:35 #881301

  • KaosKontrol
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Alright. I'm off Monday so I'll do it then. Not sure how to email you through here though.

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Last edit: by KaosKontrol.

KZ440 Engine Swap into KZ305 Bike. 10 Mar 2023 16:13 #881358

  • Nebr_Rex
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Check my profile.


.
2002 ZRX1200R
81 GPz1100
79 KZ1000st daily ride
79 KZ1000mk2 prodject
78 KZ650sr
78 KZ650b
81 KZ750e
80 KZ750ltd
77 KZ400/440 cafe project
76 KZ400/440 Fuel Injected

www.dotheton.com/forum/index.php?topic=39120.0


.

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KZ440 Engine Swap into KZ305 Bike. 10 Mar 2023 23:18 #881369

  • KaosKontrol
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Checked your profile and didn't see any email or PM options for you. Still somewhat new to using this forum. I might just be missing it.

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KZ440 Engine Swap into KZ305 Bike. 11 Mar 2023 16:40 #881389

  • Nebr_Rex
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blr44x at yahoo dot com


.
2002 ZRX1200R
81 GPz1100
79 KZ1000st daily ride
79 KZ1000mk2 prodject
78 KZ650sr
78 KZ650b
81 KZ750e
80 KZ750ltd
77 KZ400/440 cafe project
76 KZ400/440 Fuel Injected

www.dotheton.com/forum/index.php?topic=39120.0


.

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KZ440 Engine Swap into KZ305 Bike. 13 Mar 2023 21:23 #881476

  • KaosKontrol
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Email sent 

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KZ440 Engine Swap into KZ305 Bike. 18 Mar 2023 11:00 #881692

  • 82KZ305Belt
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I've been down this road before with the KZ400/440s.
Do you have a piston you could send me?
I can take some measurements and see what I can find.


.
 

You won't find anything. I've been looking for years. Would love to eat my words.

 

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KZ440 Engine Swap into KZ305 Bike. 18 Mar 2023 11:17 #881695

  • 82KZ305Belt
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Just fix the compression issue on the 305. Nothing else would be worth your while. If I really wanted an engine replacement, it would be a full-on project. Personally I'd go for one of the 454 or 500 water-cooled twins and try and make it fit. The 305s are quite rare now, I think. Much easier and cheaper to repair it than do anything else.





 

You've never tried to fix a compression issue on a 305 in recent years. New jugs are unavailable, 99% of used ones need rebore, Oversized pistons are next to impossible to find in pairs, only one comes up every couple years. I've checked overseas, underseas, in the sky, cross-compatibility and nothing, zilch zip nada. There was a new 1.0 on ebay for a while (might still be) but he wanted $140 for it and one doesn't do anyone any good. You'd pay that much again for 1.0 rings, if you found em, and still be a cylinder short

 KaosKontrol post=866850 userid=62324 said: I'm not skilled enough to rebuild the engine myself


yes you are, if you can find the parts. I've never rebuilt anything bigger than a toaster and with the help of this site I rebuilt my top end (farming out the valve/machine work). Unfortunately it ended not being enough because the cylinder was a tad too scored, but it did run when I put it all back together. Wouldn't go above 45 tho and blew smoke. For the same reasons you are stuck, mine has been stuck 2 years waiting to find parts. So you can definitely do it.
 
 

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Last edit: by 82KZ305Belt.
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