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The Friendship Bike - NobleHops restores a 75 Z1 01 Dec 2015 13:51 #701422

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OK, on to the oil pump.



Was definitely locktited prior, was afraid I'd break a screw. Heated them up for a bit...



Presto:



Measured those clearances - they were fine. Slighly worn over the spec of normal, halfway to the service limit. No problem.




Dirty screen!



Cleaned it :-)



Chased those threads and wire-wheeled the screws of the residual locktite:



Awaiting a gasket, and perhaps lapping of the gasket surface - is that the recommended treatment before reassembly Steve?



Case bolts, freshly replated, waiting for my gaskets and seals, more patiently than I.

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The Friendship Bike - NobleHops restores a 75 Z1 01 Dec 2015 14:31 #701433

  • SWest
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That's a early style pump. It's the good kind. I have one but it was too rusty. Take the gasket off gently and show a pic. That's the part I sanded with # 600 paper on a sheet of glass. My oil pressure is great, maybe too good. :unsure:
Steve

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The Friendship Bike - NobleHops restores a 75 Z1 O 02 Dec 2015 03:25 #701494

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Street Fighter LTD wrote: I would suggest a call to Larry Cavanaugh in regards to your cylinder head questions . He is a good guy with sound advise on all things valve train and porting related
Dave B) B) B)


Very cool Dave, thanks. Where do I find Larry?
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The Friendship Bike - NobleHops restores a 75 Z1 O 02 Dec 2015 03:35 #701495

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Here's his website:

www.cavanaughracing.com/
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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The Friendship Bike - NobleHops restores a 75 Z1 O 02 Dec 2015 03:35 #701496

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Just looked it up for you Larry Cavanaugh 570-423-8949
cavanaughracing.com his website is at odds with my software
Good Luck He is the best at what he does ,
Dave B) B) B)

Original owner 78 1000 LTD
Mr Turbo Race Kit, MTC 1075 Turbo pistons by PitStop Performance , Falicon Ultra Lite Super Crank, APE everything. Les Holt @ PDM's Billet Goodies . Frame by Chuck Kurzawa @ Logghe Chassis . Deep sump 5qt oil pan. RIP Bill Hahn

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The Friendship Bike - NobleHops restores a 75 Z1 02 Dec 2015 03:45 #701498

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650ed wrote: Here's his website:

www.cavanaughracing.com/


Thanks man! And to you as well Dave.
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The Friendship Bike - NobleHops restores a 75 Z1 02 Dec 2015 04:03 #701501

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Wow, great website, full of good info, and clearly he's a great guy and generous with his knowledge. Thanks for the pointer.

N.
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The Friendship Bike - NobleHops restores a 75 Z1 02 Dec 2015 08:18 #701538

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OK lads, next question for some input - the clutch springs are at the service limit. Am replacing the fibers and will glass bead the steels before reassembly, and so these need replacement too. What's the consensus for replacement? OEM or something more robust? Recall that this is a 1075 or so, running Dyna ignition, and so mildly hot-rodded.

TIA for your thoughts.

N.
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The Friendship Bike - NobleHops restores a 75 Z1 02 Dec 2015 08:22 #701540

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I run stock and never had a clutch slip. I go through cables too fast though. Stiffer ones? I don't think so. :dry:
Steve

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The Friendship Bike - NobleHops restores a 75 Z1 02 Dec 2015 08:52 #701547

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I still have my original clutch & springs in my 1980 LTD 1000, with a 1075 kit, RS 34s ported head & Dyna 2000, although I don't beat on my bikes like I used to when I was younger
most aftermarket clutches wont last as long as OEM clutches
I've heard Barnett clutches & springs are pretty good quality if you want an aftermarket
www.barnettclutches.com/
Pete
1980 LTD 1000..,1976 LTD 900, have the 1000&900 now. the rest are previous= 1978 KZ 650 B.., 1980 Yamaha XT 500..,1978 Yamaha DT 400.., 1977 Yamaha yz 80..,Honda trail ct 70.., Honda QA 50...5-1/2 hp brigs & straton CAT chopper mini bike...3-1/2 hp mini bike (WHEN GAS WAS ABOUT 45 CENTS A GALLON)!!!!

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The Friendship Bike - NobleHops restores a 75 Z1 02 Dec 2015 08:54 #701548

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swest wrote: I run stock and never had a clutch slip. I go through cables too fast though. Stiffer ones? I don't think so. :dry:
Steve

Barnett has heavy duty clutch cables for less that 20.00
Pete
1980 LTD 1000..,1976 LTD 900, have the 1000&900 now. the rest are previous= 1978 KZ 650 B.., 1980 Yamaha XT 500..,1978 Yamaha DT 400.., 1977 Yamaha yz 80..,Honda trail ct 70.., Honda QA 50...5-1/2 hp brigs & straton CAT chopper mini bike...3-1/2 hp mini bike (WHEN GAS WAS ABOUT 45 CENTS A GALLON)!!!!
The following user(s) said Thank You: 750Kruzer

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The Friendship Bike - NobleHops restores a 75 Z1 02 Dec 2015 09:20 #701552

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as for the bucket.
i would mic the o.d. of the bucket and measure the bore and find out which one doesn't measure out like the other buckets and bores.
then depending on what i found would determine my next step.
hth,

leon
skiatook,oklahoma 1980 z1r,1978 kz 1000 z1r x 3,
1976 kz 900 x 3
i make what i can,and save the rest!

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kzrider.com/forum/5-chassis/294594-frame-bracing?limitstart=0

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