Author Topic: This Is The EPIC Soggs 92K75 MAGA Thread  (Read 91904 times)

Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #675 on: May 06, 2019, 03:05:14 AM »
Good riddance :) How's the bike?
Its ok, thanks. Sounds a bit lumpy on idle, but ok when it’s warmed up. Going for mot in a week or so. Should be fully on the road and all legal very soon, just in time for the better weather.when it idles, sounds a little off. Can’t seem to find any leaks and I’ve balanced the throttle bodies as best as I can with gauges. What you reckon that could be? Starts ok, and goes ok, it’s just the idle.
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Offline The Mighty Gryphon

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #676 on: May 06, 2019, 09:12:33 AM »
Its ok, thanks. Sounds a bit lumpy on idle, but ok when it’s warmed up. Going for mot in a week or so. Should be fully on the road and all legal very soon, just in time for the better weather.when it idles, sounds a little off. Can’t seem to find any leaks and I’ve balanced the throttle bodies as best as I can with gauges. What you reckon that could be? Starts ok, and goes ok, it’s just the idle.

If you have checked for vacuum leaks on the throttle bodies and their bushings, then the next thing to check would be the valve clearances, especially the exhaust.
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #677 on: May 06, 2019, 11:14:04 AM »
If you have checked for vacuum leaks on the throttle bodies and their bushings, then the next thing to check would be the valve clearances, especially the exhaust.
Thanks. Valves seem to be in tolerance. Can’t seem to find any leaks.
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Offline szabgab

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #678 on: May 06, 2019, 11:37:28 AM »
Thanks. Valves seem to be in tolerance. Can’t seem to find any leaks.

If everything is within spec,  and you have replaced the Z shaped crankcase breather instead of shrink-tube it,  than your bike maybe needs a few hundred miles of riding...  Hopefully it flies through MOT,  so you can drive the snot out of it :)
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #679 on: May 06, 2019, 02:30:01 PM »
If everything is within spec,  and you have replaced the Z shaped crankcase breather instead of shrink-tube it,  than your bike maybe needs a few hundred miles of riding...  Hopefully it flies through MOT,  so you can drive the snot out of it :)
i plan to ride it like I stole it! May help settle all the new parts in!
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Offline szabgab

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #680 on: May 06, 2019, 03:09:59 PM »
i plan to ride it like I stole it! May help settle all the new parts in!

Good plan :) Also there is some conflicting info as to what is proper idle speed for a K75, some say it is 1000RPM or even lower, but 1200RPM seems to be the best, at least on my bike. 1000RPM is OK-ish, but higher RPM makes for a steadier idle, also bike picks up speed better, no hesitation, etc. At 8-900RPM my battery light starts to glow, so I have it set at 1200, and I am happy with that.... Maybe try this higher setting, and see what it does to your idle...
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #681 on: May 06, 2019, 03:39:50 PM »
Good plan :) Also there is some conflicting info as to what is proper idle speed for a K75, some say it is 1000RPM or even lower, but 1200RPM seems to be the best, at least on my bike. 1000RPM is OK-ish, but higher RPM makes for a steadier idle, also bike picks up speed better, no hesitation, etc. At 8-900RPM my battery light starts to glow, so I have it set at 1200, and I am happy with that.... Maybe try this higher setting, and see what it does to your idle...
good idea, the idle is low, under 1000. May screw the idle bolt down a bit. I did read on here somewhere that the light switch for the ‘choke’ at the end of the fuel bar can stick and cause the throttle not to close down properly?
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Offline Skunky

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #682 on: June 01, 2019, 03:38:46 AM »
Hi, I used a fuel cleaner in mine for the first 1000 miles.  Seemed to run much better after a while.
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #683 on: June 01, 2019, 02:37:32 PM »
Hi, I used a fuel cleaner in mine for the first 1000 miles.  Seemed to run much better after a while.
what was that?
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Offline Skunky

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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #685 on: June 04, 2019, 02:44:54 AM »
Ok. Thanks. I went for a 100 mile ride on Sunday, and it ran fine. The fuel system cleaner can’t hurt, so I will give it a go. Thank you.
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Offline Skunky

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #686 on: June 04, 2019, 10:06:28 PM »
Ok. Thanks. I went for a 100 mile ride on Sunday, and it ran fine. The fuel system cleaner can’t hurt, so I will give it a go. Thank you.

It definitely won't hurt. Should clean out the injectors and fuel pipes.
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #687 on: June 05, 2019, 02:52:06 AM »
It definitely won't hurt. Should clean out the injectors and fuel pipes.
the injectors have been professionally cleaned, and I fitted new fuel pipes.
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #688 on: July 08, 2019, 05:40:32 PM »
Rear shock seines up. Got a new YSS on there now. Recommend it for a good cheap shock.
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #689 on: July 08, 2019, 06:29:01 PM »
Ok.
Done just over 600 miles on it since 1st June. It's running well!
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #690 on: September 28, 2019, 02:15:08 PM »
Ok. Replaced the splines on the prop shaft 1050 miles ago. They are now already worn!  It sure they were made of hardened Steel like the original set.
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Offline Martin

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #691 on: September 28, 2019, 04:25:31 PM »
Send a picture to whoever you purchased the splines off, and see what they say.
Regards Martin.
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Offline John Lang

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #692 on: September 28, 2019, 04:36:51 PM »
If you replaced the spline collar without replacing the worn FD pinion you were asking for trouble.
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #693 on: September 28, 2019, 06:47:13 PM »
Send a picture to whoever you purchased the splines off, and see what they say.
Regards Martin.
Yes. I did earlier. Thing is, the replacement splines weren’t made of hardened steel like originals are.In my opinion, they should have lasted longer regardless of the final drive spline condition.
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #694 on: September 28, 2019, 06:48:36 PM »
If you replaced the spline collar without replacing the worn FD pinion you were asking for trouble.
please see my reply to Martin. But yes, I know what you mean.
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #695 on: September 29, 2019, 03:43:05 AM »
Ok. Looking for a good final drive now, and do it all over again over the winter. I want to get this drive shaft issue sorted, as I want to do a fair few miles on the bike next year around Cornwall, as my disabled brother is moving there to be closer to his new born grandchildren. The bike is my transport of choice, as I need to keep the miles down on my work van.
The K75c is great to ride,so easy, too, but I can’t have the drive components let me down. I’m a bit short of cash at the moment, as winter is looming up and my work as a gardener, will start to get scarce.
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Offline volador

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #696 on: October 02, 2019, 05:57:11 PM »
Yes. I did earlier. Thing is, the replacement splines weren’t made of hardened steel like originals are.In my opinion, they should have lasted longer regardless of the final drive spline condition.
Guess you proved replacement spline collar made of recycled Datsun bumper poorly heat treated is a no go
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #697 on: October 03, 2019, 12:15:31 AM »
Guess you proved replacement spline collar made of recycled Datsun bumper poorly heat treated is a no go
Certainly looks that way! However, I did email the company (Motobins),where I  bought them from, and they said they have sold loads and have had no complaints. But I could have had a ‘bad’ set, apparently. So they are sending me another one, free.
I also have managed to find and purchase another final drive in California on fleabay, which should be here near the end of this month. £249.00 with shipping, from a 35,000 mile bike.($303.00).
The new splines look a lighter colour than ones that I have seen on other shafts, so I am wondering if they are a softer metal that could be hardened with heat and quashing in oil.
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #698 on: October 03, 2019, 12:21:24 AM »
The new set that I bought V a library pic of an original set. The original look much darker, ie denser, stronger material
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Offline The Mighty Gryphon

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #699 on: October 03, 2019, 08:20:00 AM »
The first set probably were parkerized or some such to prevent corrosion while the replacement wasn't.

I would contact Motobins for heat treat instructions.
  • In my garage in Marilla, NY
  • '91K100RS White/Blue
Current:
'91 K100RS16V "Moby Brick Too"

Past:
'94 K75RT "Ilsa, She Wolf of the SS"
'92 K100RS16V "Moby Brick" (RIP, deceased in a vehicular assault)
'94 K75S Special Edition Dakar Yellow "Cheetos"
'89 K100RS Special Edition "Special Ed"

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