Pitted cylinder wall and rebuild kit


Information and questions on GL1000 Goldwings (1975-1979)
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PsjrS
Posts: 13
Joined: Sat Jul 11, 2015 2:32 pm
Location: livonia,michigan
Motorcycle: 1980 gl1100 interstate 1977 gl1000 1997 st1100

Pitted cylinder wall and rebuild kit

Postby PsjrS » Thu Jun 02, 2016 3:49 am



I have a1977 gl1000. It jumped time recently and I wish to rebuild the motor. I've been told that over size pistons aren't available. Can the block be re-sleeved? #3 is badly pitted from a previous coolant leak. Also does anyone know about engine kits that include all the nessasary seals bearings ect. I am rather fond of this bike and appreciate any help.



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virgilmobile
Posts: 7644
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Pitted cylinder wall and rebuild kit

Postby virgilmobile » Thu Jun 02, 2016 12:20 pm

Rod and main bearings are very rare.Even several years ago.The OEM rod bearings are color coded for an exact fit to the crank.
No oversized pistons can be fitted to the connecting rod that I could find.
Full gasket kits are expensive.If you can find one.I don't advise knock off gaskets.OEM original only.Not the ones that are replacement OEM's.I've had fitment problems.
My best advice is look for another engine.
I'm not saying that it can't be done but weigh the cost.Custom machine work can set you back a few hundred a cylinder.

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virgilmobile
Posts: 7644
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Pitted cylinder wall and rebuild kit

Postby virgilmobile » Thu Jun 02, 2016 12:22 pm

By the way.EBay has gl1000 engines from a few hundred to a grand.Some even guaranteed.

PsjrS
Posts: 13
Joined: Sat Jul 11, 2015 2:32 pm
Location: livonia,michigan
Motorcycle: 1980 gl1100 interstate 1977 gl1000 1997 st1100

Re: Pitted cylinder wall and rebuild kit

Postby PsjrS » Fri Jun 03, 2016 4:27 am

Well, I guess that's what I needed to know. I'm going to do some searching. Thanks for the info.

Old Fogey
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Motorcycle: 1976 GL1000
1979 GL1000
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Re: Pitted cylinder wall and rebuild kit

Postby Old Fogey » Sun Jun 05, 2016 6:02 pm

Yup, for the moment, if you are in the States a used engine is the way to go. Plenty of choice. That, of course, is going to change as the years roll by. Over here, that choice is much more severely limited.
These engines are extremely expensive to rebuild.
As already noted, crank bearings are the biggest worry as some sizes are now totally extinct. Pattern oversize pistons and rings are available but machine shops hate the blind #1 and #3 bores, making re-bores expensive too.
I have just finished an engine; actually just the main block (no heads or rear end with clutch etc) and you would weep like the owner did if I told you what it eventually cost him. Admittedly that engine had been a high mileage very, very abused one that I even had to eventually change the block on as it was distorted.
After-market gasket sets are fine, but stick to either Athena or Vesrah. You will not have trouble with either of these if the assembly is done right. I use Athena all the time.
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'Impossible' is just a level of difficulty! The only stupid question is the one you didn't ask first!

PsjrS
Posts: 13
Joined: Sat Jul 11, 2015 2:32 pm
Location: livonia,michigan
Motorcycle: 1980 gl1100 interstate 1977 gl1000 1997 st1100

Re: Pitted cylinder wall and rebuild kit

Postby PsjrS » Mon Jun 06, 2016 4:32 am

Well, that's good to know. For the short term I'm going to just do a valve job on the bad side, and eventually get a whole motor. This will allow me to take my time to properly rebuild the original.
Thanks for your input




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