On the exhast, just remember, loud pipes saves lives.
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1981 Kawasaki GPz550: Restoration
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Corey
Awesome Steve! Looks like it is not only a runner, but a show winner too.
On the exhast, just remember, loud pipes saves lives.
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Forum LongTimerGSResource Superstar
Past Site Supporter
Super Site Supporter- Mar 2006
- 35600
- Torrance, CA
Congratulations Steve! Hope it rides as good as it looks!Ed
To measure is to know.
Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182
Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846
Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf
KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection
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Thanks Roger, Larry, Ray, Steve, Corey & Ed for the support and help over the years! I took the day off and unfortunately a ran/snow mix today here in Colorado. The weekend will be nicer weather.
This might be a Corey or Ed-K750 question. What size spark plug wrench do you use for the NGK D8EA spark plug? The only tool which fits is the spark plug wrench from the OEM tool kit. I would like to torque the spark plugs correctly.Last edited by srsupertrap; 04-06-2018, 02:59 PM.Steve
1979 GS1000E (45 Yrs), 1981 GPz550 (11 Yrs)
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What a beautiful bike! Thanks for posting the video...nice clean garage too!
EdGS750TZ V&H/4-1, Progressive Shocks, Rebuilt MC/braided line, Tarozzi Stabilizer[Seq#2312]
GS750TZ Parts Bike [Seq#6036]
GSX-R750Y (Sold)
my opinion shouldn't be taken as gospel or in any way that would lead you to believe otherwise (30Sep2021)
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Steve - at last! Can't wait to see some pics from the road.
And, thanks again for that nut. You wouldn't have believed the look on The Collectors face when I returned the other one to him. i don't think anyone's ever borrowed any hardware from him and returned it.1978 GS 1000 (since new)
1979 GS 1000 (The Fridge, superbike replica project)
1978 GS 1000 (parts)
1981 GS 850 (anyone want a project?)
1981 GPZ 550 (backroad screamer)
1970 450 Mk IIID (THUMP!)
2007 DRz 400S
1999 ATK 490ES
1994 DR 350SES
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Originally posted by srsupertrap View Post..... What size spark plug wrench do you use for the NGK D8EA spark plug? The only tool which fits is the spark plug wrench from the OEM tool kit. I would like to torque the spark plugs correctly.
Well done! Fantastic job on your GPz!1981 GS850G "Blue Magic" (Bike Of The Month April 2009)
1981 GS1000G "Leo" (Bike Of The Month August 2023)
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Forum LongTimerGSResource Superstar
Past Site Supporter
Super Site Supporter- Mar 2006
- 35600
- Torrance, CA
Originally posted by srsupertrap View PostThis might be a Corey or Ed-K750 question. What size spark plug wrench do you use for the NGK D8EA spark plug? The only tool which fits is the spark plug wrench from the OEM tool kit. I would like to torque the spark plugs correctly.Ed
To measure is to know.
Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182
Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846
Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf
KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection
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I purchased a Craftsman 18mm spark plug socket to remove the NGK D8EA spark plug which works nicely. I have ridden the GPz about 10 miles around town. Everything seems to be working well enough transmission shifts through the gears, no engine noise, charging system charges and handles nimbly. Like so many 4 cylinder bikes the carbs need adjustment because it does not idle. When I initially disassembled the GPz in 2013 the plug were fouled, not much changed in 2018 when I started it up. Perhaps worse @ 5100 Ft. I initially thought carb synchronization but checking with my TwinMax Electronic Carb synchronizer the drill bit settings was pretty close. The Mikuni Flatslides had 32.5 pilots which might have been the factory jets but those jets are too rich even with fuel screws 2 full turns out as evident below
Pulled the Mikunis and swapped out the 32.5 pilot jets and installed a set of size 30 pilot jets.
I will start with fuel air screws 1.5 turns which hopefully will make the GPz idle which sounds about right?
Last edited by srsupertrap; 04-30-2018, 10:12 PM.Steve
1979 GS1000E (45 Yrs), 1981 GPz550 (11 Yrs)
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Zaddict
As happy as I am to see the bike finally assembled and running I'm even more excited to get your report once you dial things in and get a chance to thrash it about a bit. I guess the good news with jetting is the pods should make pulling and reinstalling the carbs much easier.
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Forum LongTimerGSResource Superstar
Past Site Supporter
Super Site Supporter- Mar 2006
- 35600
- Torrance, CA
Bump for a ride report!Ed
To measure is to know.
Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182
Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846
Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf
KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection
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Originally posted by dweller View PostWow, great job. Really cool bike! How did the 30 pilots work?
Issues:
- Still won't idle or start when hot without giving some choke.
- Will stall when approaching stops.
- While on the pilot circuit and the throttle closed the GPz surges as engine rpm drops.
- Above 3500 rpm when timing is fully advanced the engine hangs up @ 3500 -4000 rpm ??? Note: Short shifting is much better but its not rideable in traffic.
- Right fork seal leaks
Verified the timing and spark plug gap was correct afterwards. After 12 miles the plugs look like. I ran these same plugs with the 32.5 pilots and they were pretty fouled. The Flatslides have Push / Pull thottle cables like VM equipped GS750/1000s. Both cables have slack and the throttle spring snap the slides shut. Thoughts?
Last edited by srsupertrap; 06-10-2018, 04:32 PM.Steve
1979 GS1000E (45 Yrs), 1981 GPz550 (11 Yrs)
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Originally posted by steve murdoch View PostFantastic sound!
Be rightfully proud of a job well done."Thought he, it is a wicked world in all meridians; I'll die a pagan."
~Herman Melville
2016 1200 Superlow
1982 CB900f
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Corey
Still hanging in there Steve? Keep at it you are getting closer. Might need to invest in a Wideband System for tuning. Check out this:
https://www.innovatemotorsports.com/products/db.phpi
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