Engine Strip and Rebuild


Information and questions on GL1000 Goldwings (1975-1979)
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GL1000dan
Posts: 3
Joined: Thu Aug 09, 2018 3:22 am
Location: England
Motorcycle: 1976 GL1000 K1

Engine Strip and Rebuild

Post by GL1000dan » Sun Jun 30, 2019 4:56 pm



I am considering having my engine professionally stripped, refurbished and rebuilt.

Has anyone had this done and any advice would be welcome.



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SnoBrdr
Posts: 752
Joined: Fri Mar 07, 2014 9:01 am
Location: Providence, Rhode Island
Motorcycle: 1978 GL 1000

131K Original Owner

Re: Engine Strip and Rebuild

Post by SnoBrdr » Sun Jun 30, 2019 5:19 pm

GL1000dan wrote:
Sun Jun 30, 2019 4:56 pm
I am considering having my engine professionally stripped, refurbished and rebuilt.

Has anyone had this done and any advice would be welcome.
Make sure they can actually get the parts.

Some just don't exist anymore.

And it won't be cheap.

You should check with http://wingovations.com/, one of the most knowledgable people around on old parts.

I just looked at his site and he had an accident of some type and is closed atm.

But if he doesn't have it or can't find it, it doesn't exist.

GL1000K1dan
Posts: 4
Joined: Thu Aug 09, 2018 3:26 am
Location: England
Motorcycle: 1976 GL1000 K1

Re: Engine Strip and Rebuild

Post by GL1000K1dan » Mon Jul 01, 2019 2:08 am

The engine (48000 original Miles) was a runner before I removed it from my bike, however, it did have a rattle at tick over.
I am hoping that it will not require any new parts other than gaskets and seals.
I am not sure, at this stage, exactly what the engine rebuilder will be checking when they pull the engine apart. Perhaps obvious damage or excessive wear ? I have asked the question and awaiting the company’s reply.
You’re right, it’s not a cheap undertaking; $2600.
The other aspect that I am not sure about (also asked the question) is how or if they test the engine after rebuild.
At present, there are too many unknowns for me to commit a large amount of my money to this project.

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SnoBrdr
Posts: 752
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Location: Providence, Rhode Island
Motorcycle: 1978 GL 1000

131K Original Owner

Re: Engine Strip and Rebuild

Post by SnoBrdr » Mon Jul 01, 2019 6:12 am

GL1000K1dan wrote:
Mon Jul 01, 2019 2:08 am
The engine (48000 original Miles) was a runner before I removed it from my bike, however, it did have a rattle at tick over.
I am hoping that it will not require any new parts other than gaskets and seals.
I am not sure, at this stage, exactly what the engine rebuilder will be checking when they pull the engine apart. Perhaps obvious damage or excessive wear ? I have asked the question and awaiting the company’s reply.
You’re right, it’s not a cheap undertaking; $2600.
The other aspect that I am not sure about (also asked the question) is how or if they test the engine after rebuild.
At present, there are too many unknowns for me to commit a large amount of my money to this project.
First thing you should do is a compression test.

Not sure what you mean by a rattle at tick over.

Could be the primary chain. That is usually caused by the carbs being out of synch.

Why did you remove it from the bike? Part of painting the frame or ???

GL1000K1dan
Posts: 4
Joined: Thu Aug 09, 2018 3:26 am
Location: England
Motorcycle: 1976 GL1000 K1

Re: Engine Strip and Rebuild

Post by GL1000K1dan » Mon Jul 01, 2019 1:30 pm

I removed the engine as I wanted to find out for myself why it was rattling. It did sound like a chain rattle when the bike was ticking over. I was not aware that out of sync carbs could cause the chain rattle noise and that’s because I am still learning about this bike. Perhaps I should do the compression test while the engine is on my bench, give it a thorough clean and put it back in the frame, then balance the carbs. I guess this would save me many $$$s. However, if it still rattles then I am back to square one again.
I have stripped down a CX500 engine in the past and rebuilt it, which was a learning curve, but I managed it ok and the bike runs just fine. I was thinking of doing the same to the GL1000 engine - it can’t be that much different, just bigger and 2 times more of everything than the CX.
However, I took a reality check and, with the lack of time at my disposal, decided to enquire about a professional rebuild.
Also, with the engine out I can inspect the rest of the bike properly and give it a good clean.
A bit tongue in cheek, but I think it would be cheaper for me to pay the return airfare to any GL1000 K1 owner who has mastered these engines and wants to come over to the UK for a holiday free of charge !

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Maz
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Location: Kent, UK
Motorcycle: 1975 GL1000K1
1976 CB500T
1979 CB750L
1990 Yamaha FJ1200
1993 Suzuki GS500E

Re: Engine Strip and Rebuild

Post by Maz » Mon Jul 01, 2019 3:08 pm

Firstly, I would definitely rule out carb problems before laying out that much cash.
These engines rattle, knock and clank at idle if the carbs are out of sync or one or more of the idle circuits in the carbs is blocked. Have the carbs been thoroughly cleaned / rebuilt?
It would be well worth spending a few hours temporarily refitting the engine to check carb sync and if they haven't been properly cleaned, do that first. Also, if you don't know when it was done (if at all), replace the timing belts asap.
As has been previously mentioned, some engine parts are non-existant new.
Maz
Ironically, Common Sense is the LEAST common of all senses!

GL1000K1dan
Posts: 4
Joined: Thu Aug 09, 2018 3:26 am
Location: England
Motorcycle: 1976 GL1000 K1

Re: Engine Strip and Rebuild

Post by GL1000K1dan » Mon Jul 01, 2019 3:24 pm

I appreciate your input guys.
I now have a much better idea of what I should do.
I will give the engine a good clean while it’s on the bench, give the frame and bike parts a good clean and check over then refit the engine.
Clean up the carbs in my ultrasonic bath and then get them balanced.
I feel happier already that I may get my bike up to a reasonably good standard without shelling out a ton of money.

I have posted separately regarding the original exhaust that I have just removed. Any wisdom you can give on this is much appreciated.

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Maz
Posts: 675
Joined: Tue May 19, 2015 4:43 am
Location: Kent, UK
Motorcycle: 1975 GL1000K1
1976 CB500T
1979 CB750L
1990 Yamaha FJ1200
1993 Suzuki GS500E

Re: Engine Strip and Rebuild

Post by Maz » Mon Jul 01, 2019 3:26 pm

Just out interest, where in the UK are you?
Maz
Ironically, Common Sense is the LEAST common of all senses!

GL1000K1dan
Posts: 4
Joined: Thu Aug 09, 2018 3:26 am
Location: England
Motorcycle: 1976 GL1000 K1

Re: Engine Strip and Rebuild

Post by GL1000K1dan » Mon Jul 01, 2019 3:38 pm

I’m in Fleet, Hampshire. Sits between Guildford and Basingstoke.
I see you are from sunny Kent.
I bought my GL1000 just under 2 years ago and it’s been sat on my ramp in the garage since then. I am keen to get it back on the road so that I can ride it.

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Maz
Posts: 675
Joined: Tue May 19, 2015 4:43 am
Location: Kent, UK
Motorcycle: 1975 GL1000K1
1976 CB500T
1979 CB750L
1990 Yamaha FJ1200
1993 Suzuki GS500E

Re: Engine Strip and Rebuild

Post by Maz » Mon Jul 01, 2019 3:42 pm

I'll send you a PM.
Maz


Ironically, Common Sense is the LEAST common of all senses!

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