Oil pan &quot;crack&quot; would you run this?

idmurp
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Oil pan "crack" would you run this?

03 Jul 2021 07:02

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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Re: Oil pan "crack" would you run this?

03 Jul 2021 07:10 - 03 Jul 2021 07:56

#851162

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
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Last edit: 03 Jul 2021 07:56 by DOHC.

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idmurp
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Re: Oil pan "crack" would you run this?

03 Jul 2021 07:16

#851164

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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Re: Oil pan "crack" would you run this?

03 Jul 2021 07:28

#851166

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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idmurp
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Re: Oil pan "crack" would you run this?

03 Jul 2021 07:36

#851167

Thanks both, thats why I come here

1992 KZ1000p in pieces

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Mikaw
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Re: Oil pan "crack" would you run this?

03 Jul 2021 10:08

#851179

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
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idmurp
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Re: Oil pan "crack" would you run this?

03 Jul 2021 14:43

#851201

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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Nessism
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Re: Oil pan "crack" would you run this?

03 Jul 2021 14:50

#851203

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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