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TOPIC: 650 SR 1981 (z750L engine)

650 SR 1981 (z750L engine) 29 Jan 2018 11:58 #777984

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Today have I mounted the front fork to the frame and installed new roller bearings for the steering.
I hope I have torqued the bolt for the steering correct, not to much or less....

So fun to building the bike and not only take a part :)
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
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650 SR 1981 (z750L engine) 30 Jan 2018 11:34 #778022

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Today have I installed the main? stand, front wheel and the steering, have attached some photos.

The steering is not 100% streight, it was not 100% before either. When I release the bolts for the upper and lower part who clamp on the upper fork I can adjust so the steering is streight, but when I torque up the bolts again it drags some back... it`s not much... but some....
I think I will leave it for now... I properly need to replace the upper or lower part..... ?

I have also added 248cc oil to the front fork, I was not sure what capacity I have since the forks has been rebuild with different parts, but 248cc is according to 80-81 KZ750-E (USA).
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
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Last edit: by gordone.

650 SR 1981 (z750L engine) 10 Feb 2018 04:58 #778455

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I have now rebuild all three brake calipers, have attached some photos.

I have now started to install the electrical system on the bike again. I will reuse existing for now,
but the plan is to build new next winter.
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
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650 SR 1981 (z750L engine) 13 Feb 2018 10:16 #778689

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Today have I installed the new Hagon rear suspension, have attached some photos.
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
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650 SR 1981 (z750L engine) 13 Feb 2018 10:31 #778691

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Wow, it looks really good. Great progress!
kzrider.com/forum/11-projects/338400-a-little-bit-of-an-upgrade

'77 KZ650-C1 -- build
810 kit
GPZ cams and carbs
ZX6R front end
GSXR600 Rear
Kerker
Dyna
Accel
ContiMotion tires (120/60-17&170/60-17)
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650 SR 1981 (z750L engine) 13 Feb 2018 11:21 #778695

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Hagon shocks changed the personality and handling of my 650 D2 more than any other change I've made. Progressive springs, new seals and fluid in the forks was good, but the shocks were huge.
79 KZ650 SR
80 KZ1000 Z1 Classic
83 KZ1100 LTD
06 ZG1000 Concours
02 Trans Am ... not enough time
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650 SR 1981 (z750L engine) 13 Feb 2018 22:40 #778731

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ajsfirehawk wrote: Hagon shocks changed the personality and handling of my 650 D2 more than any other change I've made. Progressive springs, new seals and fluid in the forks was good, but the shocks were huge.


Looking forward to test the bike again :)
I was thinking the rear suspension was less important then front, but rear is maybe important for my ass :) hehe?
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine

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650 SR 1981 (z750L engine) 16 Feb 2018 08:16 #778861

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Last work I have done is to pimp up the gauges for rpm and speed... It was some corrosion etc.... I have not done a 100% overhaul, since my plan is to rebuild everything when it comes to electricity and switches gauges etc.. next winter.

I have also reinstalled the left and right switches, have been able to locate a new plastic knop for the right side.

I have also received the top back, workshop have tapped of some on the inlet valves, so I can manage to get correct valve clearness.
I`m waiting for the last part before I can install the oil pan again and start to reinstall the engine.

I did not find any good picture before I started to overhaul the gauges:


After:


1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
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Last edit: by gordone.

650 SR 1981 (z750L engine) 19 Feb 2018 10:05 #778993

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Today have I rebuild the brake cylinder rear with new parts, ready to be installed when I receive the rest of the parts (brake lines etc).
Tomorrow is the plan to rebuild the underside of the engine, install the oil pan again, will pick up the last part tomorrow.

1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
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650 SR 1981 (z750L engine) 21 Feb 2018 12:07 #779121

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Today have I installed the oil pan again. I have also washed the cylinders with mineral oil, the cylinder has a fresh borr and hone job, I shall install 810 big bore kit.
Plan further is to rebuild the whole engine and then paint the engine and store it for some months, while building the rest and then install it into the frame, do the last pices and start it up and do the burn in procedure.

Murphy's law will properly come hehe, but I try to do everything correct the first time.

I want to thank you all members on these form for your input and help, without you I will had big problem doing rebuild of the bike, so thank you.





1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine

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Last edit: by gordone.

650 SR 1981 (z750L engine) 22 Feb 2018 11:21 #779189

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Today have I installed the pistons, will continue on Saturday.

1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
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650 SR 1981 (z750L engine) 24 Feb 2018 14:00 #779290

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Today have I continue with the engine rebuild. I have installed the block and the top. I have only been able to torque up to 20Nm, my torque wrench is not going higher, will get a larger one on Monday and torque up to final 40Nm according to the service manual.

I used threebond sealer on four locations according to the service manual and then sprayed the whole gasket with copper spray.

Cross my fingers for now oil leak :)

Plan for tomorrow is to check valve clearness and install the cams and the timing chain.





1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
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Last edit: by gordone.

650 SR 1981 (z750L engine) 25 Feb 2018 10:06 #779334

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Looks great Gordone. I'm surprised more folks are chiming in, but it may be the Winter doldrums. You appear to be doing a well thought out, systematic job on this one. Won't be long before you are firing her up. Excellent work.
79 KZ650 SR
80 KZ1000 Z1 Classic
83 KZ1100 LTD
06 ZG1000 Concours
02 Trans Am ... not enough time
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650 SR 1981 (z750L engine) 28 Feb 2018 10:01 #779554

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Today have I installed the "side" cover, replaced all the oil seal etc....
I have ordered shims kit and new tappet for the valves.
When I received these will I build the rest of the engine and get it painted ready to be installed in the frame when it get warmer in the weather.
I have also received the brake lines, so I will install the brake lines / caliper next week maybe.



1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
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650 SR 1981 (z750L engine) 13 Mar 2018 23:41 #780202

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Yesterday I installed the rear wheel and the rear brake system. It was a problem to get all air out of the system with the old fanshion way, when I sued vaacum unit then it was no problem...

Next step will be to paint the engine, front and rear fender plus the side covers.
When these is done will I do the the rest of the engine, valve clarness, carb inlet holders etc... so everything is ready for install the engine in the frame.

1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
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650 SR 1981 (z750L engine) 14 Mar 2018 05:07 #780208

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great work gordone your going to have a very nice bike
1982 KZ550H1

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650 SR 1981 (z750L engine) 18 Mar 2018 05:46 #780403

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The last days have I done some paint work on the fenders and the engine, I have attached some photos below. When the paint is dried will I do what is left on the engine, replace and the valve tappet and adjust he valve clearness and store the engine until the weather is warmer, around one month?

The plan is to replace on the small bolts on the engine, at least on the sides, with bolt who has not paint on...

I will also install the brakes front the next days, see what I take first.

Need to clean my work space also after the paining... lot of dust....

1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine

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Last edit: by gordone.

650 SR 1981 (z750L engine) 18 Mar 2018 10:12 #780406

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Nice, keep pitching, you will be riding soon.
79 KZ650 SR
80 KZ1000 Z1 Classic
83 KZ1100 LTD
06 ZG1000 Concours
02 Trans Am ... not enough time
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650 SR 1981 (z750L engine) 22 Mar 2018 15:03 #780638

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Today have I installed the front fender and the front brakes include the brake lines. I think there is some more air in the system, will check it up later.
I`m planning to not do any thing the next week, take some holidays...

1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
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650 SR 1981 (z750L engine) 22 Mar 2018 17:50 #780652

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Looks good. I do believe there is supposed to be struts from the bottom of the forks to the lower rear of your front fender. If the front fender oscillates enough to catch the tread while you are riding, it is going to be a $hitstorm. Take a hard look at it partner. A pic of my 79 D2 for reference.

79 KZ650 SR
80 KZ1000 Z1 Classic
83 KZ1100 LTD
06 ZG1000 Concours
02 Trans Am ... not enough time

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