Author Topic: 1975 GL1000 purchased from original owner  (Read 1597 times)

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Offline markreimer

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Re: 1975 GL1000 purchased from original owner
« Reply #25 on: September 16, 2020, 09:50:05 am »
Another project on the GL

I noticed my fuel pump was spitting gas out the weep hole, just above the right side headers. Not good! Inspection showed the rubber diaphragm was cracked. I sourced a used pump but found the same issue. So time to convert to electric.

I picked up a Facet pump that puts out the same volume and pressure as the mechanical stock pump. I cut up some scrap aluminium plate to make a mounting bracket, and started to wire it up.

The way I’ve wired it uses a series of two relays, so the pump is powered directly off the battery via a dedicated fused line. The trigger relay grounds to the oil pressure switch, so when the engine looses oil pressure it shuts off. This is my version of a safety shutoff in the event of a crash.

One nice thing about an electric pump is being able to prime the carbs after a long period of storage. I have left the aluminum bracket oversized at the moment so I can cut a hole for an interrupting switch in the relay ground path. This will let me trick the system into thinking it has oil pressure when not running, therefor the pump runs, and I hit the starter a few seconds later. I haven’t installed the switch yet, but the system works so well. I have about 1,500km on it so far.







I’ll cut down that massive angled bracket soon and add my primer switch to the top.

Also had to replace my starter switch after it broke and used the opportunity to add relays for the headlight. It’s now directly powered from the battery and much brighter!







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Offline andy750

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Re: 1975 GL1000 purchased from original owner
« Reply #26 on: September 17, 2020, 03:19:20 am »
Very nice work Mark!
Current bikes
1. CB750K4: Long distance bike, 17 countries and counting...2001 - Trans-USA-Mexico (CB750K4), 2003 - European Tour (CB750K4), 2004 - SOHC Easy Rider Trip (CB750K4), 2008 - Adirondack Tour 2-up (CB750K4) , 2013 - Tail of the Dragon Tour , 2017: 836 kit install and bottom end rebuild. And rebirth: http://forums.sohc4.net/index.php/topic,173213.msg2029836.html#msg2029836
2. CB750/810cc K2  - road racer with JMR worked head 71 hp
3. VStrom DL1000 2003
4. XLR650L 2006

Where did you go on your bike today? - http://forums.sohc4.net/index.php?topic=45183.2350

Offline markreimer

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Re: 1975 GL1000 purchased from original owner
« Reply #27 on: September 17, 2020, 09:51:33 am »
Very nice work Mark!
Thanks Andy! Hey, how's your bare steel 750 tank holding up?

Offline yellowjacket

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Re: 1975 GL1000 purchased from original owner
« Reply #28 on: October 01, 2020, 01:43:06 pm »
Nice bike. I have a 75 gl as well. I ride it all over.  They are great bikes.

Offline markreimer

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Re: 1975 GL1000 purchased from original owner
« Reply #29 on: October 01, 2020, 01:55:20 pm »
Thanks! The bike has been running very nicely since the last few repairs/mods. Winter will be here pretty soon, so I'm trying to get as much seat-time as possible. Only about another 3-4 weeks max till snow comes.

Over winter I'll look at re-doing the seat, maybe rear shocks, maybe even fit up the Vetter, why not LOL.


Offline Prospect

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Re: 1975 GL1000 purchased from original owner
« Reply #30 on: October 02, 2020, 05:51:15 am »
Thanks! The bike has been running very nicely since the last few repairs/mods. Winter will be here pretty soon, so I'm trying to get as much seat-time as possible. Only about another 3-4 weeks max till snow comes.

Over winter I'll look at re-doing the seat, maybe rear shocks, maybe even fit up the Vetter, why not LOL.
I think I'm in the minority but I think the gl1000 looks great with a Vetter fairing. It really helps with the fatigue on the long rides. I have at least two that I plan to out on the gl1000 one day. Looking forward to your progress.
Current Bikes

1969 CB750  Sandcast #256
1971 CB750K1
1972 CB750K1
1975 CB400F
1975 GL1000 Goldwing
1954 Harley Davidson Panhead
1957 Harley Davidson Panhead

Toronto Canada

Offline Mr.D

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Re: 1975 GL1000 purchased from original owner
« Reply #31 on: October 22, 2020, 07:46:47 pm »
Your bike looks great! I recently picked up the same one to be my "other bike". Yours looks better than mine though. It'll be a bit of a project to bring it back to its full glory. The main problem is probably the clutch issue. I'm hoping it's just adjustment, but who knows. It doesn't like to stay in neutral and I've been told by the PO (I haven't been able to ride it much yet) that it slips out of gear when hot... so we'll see what that ends up being..

I'll probably have to do all the same work that you've done, so it's great to have this thread as a reference! I look forward to further updates!  :)
1977 CB550F

Offline Flyin900

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Re: 1975 GL1000 purchased from original owner
« Reply #32 on: November 04, 2020, 06:59:59 pm »
Hi Mark nice to see you have tried a Wing, as they are a pretty special bike for sure. The early ones (75-76-77) had a slightly different cam profile in rise and duration, so a bit more of a hot rod vs the later GL1000's that were tuned for more mid range performance. In fact the only faster stock bike in 1975 was the Kawai Z1, if I have my facts correct.

That clutch rattle you noted is more likely the Hyvo main chain off the crank, as the early wings were usually a little noisier at idle when the carbs were not sync'd correctly. The GL1100 and GL1200's all had improvements in that area as the models evolved.

Looks and sound like you have everything rolling along well.

If your ever stuck on an issue there are a number of early Goldwing sites that are specific to these old gals.
« Last Edit: November 04, 2020, 07:09:47 pm by Flyin900 »
Common sense.....isn't so common!
1967 CL175K0 Scrambler #802 engine
1973 CB350F Super Sport
1975 CB400F Super Sport
1976 CB400F Super Sport
1976 GL1000 Goldwing
1978 CB550K Super Sport
1981 GL 1100 Goldwing Standard
1982 CM450A - Hondamatic
1982 CB900   Custom
1983 CX650E Eurosport
1983 CB1000 Custom
1984 GL1200 Goldwing Standard