Wrong Oil Filter Bolt?

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09 Aug 2010 18:35 - 10 Aug 2010 15:20 #389740 by Kyle_w11
Wrong Oil Filter Bolt? was created by Kyle_w11
Are all KZ 900 oil filter bolts the same? I have a '74 KZ 900 engine and the previous owner didnt have an oil filter assembly.. i've tracked one down and go to put it in.. the bolt doesn't go in far enough to seat the oil filter cover. Are there variations of filter bolts?
1976 KZ 900 A4 with 1974 Z1 Big Bore Engine - 10,000 mi.
Last edit: 10 Aug 2010 15:20 by Kyle_w11.

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09 Aug 2010 18:43 #389745 by PLUMMEN
Replied by PLUMMEN on topic Filter Bolts
i wouldve guessed theyre the same,did you check the threads? B)
Still recovering,some days are better than others.

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09 Aug 2010 18:51 #389747 by Kyle_w11
Replied by Kyle_w11 on topic Filter Bolts
yes, it goes pretty much all the way in with my hand.. I go to torque it to 65 in-lbs and the cover isn't even seated.
1976 KZ 900 A4 with 1974 Z1 Big Bore Engine - 10,000 mi.

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09 Aug 2010 19:02 #389755 by Kyle_w11
Replied by Kyle_w11 on topic Filter Bolts
Does anyone have one they can measure? with the oil filter bolt in hand and the oil filter cover on the bolt. i measure 97.87 mm from the end of the bolt to the mating face of the oil filter cover.
1976 KZ 900 A4 with 1974 Z1 Big Bore Engine - 10,000 mi.

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09 Aug 2010 19:16 #389762 by Kyle_w11
Replied by Kyle_w11 on topic Filter Bolts
i'm thinking the guy at the shop gave me the wrong bolt. here's a pic.. looking at the holes, they're slotted and chamfered.. it looks like it might be the wrong one.

[IMG


Here is the measurement I was taking

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Here is a pic of the oil pan.. doesn't look stock to me.. any input..

[IMG
1976 KZ 900 A4 with 1974 Z1 Big Bore Engine - 10,000 mi.

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09 Aug 2010 21:18 #389785 by KZ250LTD
Replied by KZ250LTD on topic Filter Bolts
Nope, doesn't look like the stock one. if I'm right, its a deep sump pan that someone has either modded or bought from someone. Doesn't look particularly professional though...
79 KZ1000ST
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10 Aug 2010 07:10 #389866 by Kyle_w11
Replied by Kyle_w11 on topic Filter Bolts
That just means the sump is modified though right.. the oil filter assembly should be the same, no?
1976 KZ 900 A4 with 1974 Z1 Big Bore Engine - 10,000 mi.

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10 Aug 2010 09:45 #389894 by Kyle_w11
Replied by Kyle_w11 on topic Filter Bolts
From what I understand this bike was modified for a friend in the early 80's from a guy who raced/built drag bikes. Clearly he didn't completely finish the buid. I guess he just got the engine built and back into the bike and that was it. It baffles me that the oil filter assembly is missing though. I agree it doesn't look professional but it will do the trick. What's the purpose of the deep sump? is it just more cooling time?
1976 KZ 900 A4 with 1974 Z1 Big Bore Engine - 10,000 mi.

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10 Aug 2010 10:17 #389899 by 650ed
Replied by 650ed on topic Filter Bolts
You do have the rest of the oil filter assembly parts (fence, spring, washer) right? ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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10 Aug 2010 12:44 - 10 Aug 2010 12:52 #389916 by Kyle_w11
Replied by Kyle_w11 on topic Filter Bolts
I have the Bolt, Cap, Spring, washer and filter. complete with o-rings. By fence I assume you mean filter..
1976 KZ 900 A4 with 1974 Z1 Big Bore Engine - 10,000 mi.
Last edit: 10 Aug 2010 12:52 by Kyle_w11.

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10 Aug 2010 12:53 #389919 by MFolks
Replied by MFolks on topic Filter Bolts
I believe it's a shield that covers the top of the filter assembly. It goes about 1/4 down and looks like SS.
1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
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10 Aug 2010 13:28 #389924 by hocbj23
Replied by hocbj23 on topic Filter Bolts
Deep sumps have two purposes,one to allow more oil in the crankcase as more oil =better cooling and more lube.Second reason is to retain some oil where needed for extremes in accel or decel where all the oil tends to run from one end of crankcase to the other,thus causing either oil pressure lite to come on or oil pump pickup to run dry.I have a Schnitz Racing oil gate in my bike for the same reason.bj

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