Oil pan "crack" would you run this?

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03 Jul 2021 07:02 #851161 by idmurp
Oil pan "crack" would you run this? was created by idmurp
Bottom end was built before I got the bike.  Filled it with oil and had a leak from the gasket where the bolt had caught it.  When changing it have spotted this.  Would you run it or replace? Its never been run with this so dont know if it leaks.  

 
1992 KZ1000p in pieces
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  • DOHC
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  • Those Doe-Hawks really go!
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03 Jul 2021 07:10 - 03 Jul 2021 07:56 #851162 by DOHC
Replied by DOHC on topic Oil pan "crack" would you run this?
I can't be sure, but those don't look like cracks to me.  It looks like surface imperfections left over from the molding/casting process.  You can find lots of those lines on all of the cast aluminum parts on these engines.  
'78 Z1-R in blue , '78 Z1-R in black, '78 Z1-R in pieces
My dad's '74 Z1
'00 ZRX1100
Last edit: 03 Jul 2021 07:56 by DOHC.
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03 Jul 2021 07:16 #851164 by idmurp
Replied by idmurp on topic Oil pan "crack" would you run this?
That was my first thought, but they have corresponding marks on inside and outside that make me think cracks
1992 KZ1000p in pieces

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  • SWest
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03 Jul 2021 07:28 #851166 by SWest
Replied by SWest on topic Oil pan "crack" would you run this?
CASTING FLAWS DON'T WORRY ABOUT IT
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
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03 Jul 2021 07:36 #851167 by idmurp
Replied by idmurp on topic Oil pan "crack" would you run this?
Thanks both, thats why I come here :D
1992 KZ1000p in pieces
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03 Jul 2021 10:08 #851179 by Mikaw
Replied by Mikaw on topic Oil pan "crack" would you run this?
I agree, casting marks. To be sure though you could set the pan up on some blocks over a drip pan and fill it with gas. The gas is thinner than oil and will drip through if they are cracks. Might take overnight to confirm. 
1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
1980 KZ 750 E1
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.

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03 Jul 2021 14:43 #851201 by idmurp
Replied by idmurp on topic Oil pan "crack" would you run this?
Its a really good idea, except I just filled the bike with oil.  Its got papertowel underneath it to check for oil leaks like last time, but this time I put the gasket in properly. Will keep an eye on leaks from there anyway.  
1992 KZ1000p in pieces

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03 Jul 2021 14:50 #851203 by Nessism
Replied by Nessism on topic Oil pan "crack" would you run this?
Those marks are not cracks.  They are simply casting marks as confirmed by others in this thread.  Move on to other things to worry about.  Have you adjusted the valves lately?
Ed
Carb O-ring Kits : www.kzrider.com/forum/3-carburetor/61807...-o-ring-kits?start=0

www.kzrider.com/forum/faq-wiki/618026-new-owner-things-to-know

1981 KZ750E2
www.kzrider.com/forum/11-projects/604901...z750e-project-thread
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