Compression Readings


Information and questions on GL1100 Goldwings (1980-1983)
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Jakez
Posts: 37
Joined: Tue Jan 21, 2014 12:05 am
Location: Delmas, Mpumulanga, South Africa
Motorcycle: 1981 GL1100 Standard.
email: sharky4life@gmail.com
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Compression Readings

Postby Jakez » Tue Apr 22, 2014 7:15 am



Hi guys. Well I know that a lil bit of smoke on start up is fine but recently my Goldwing sometimes will smoke like crazy for about a couple of seconds, especially if cold or standing for a day or 2 without riding. It doesn't smoke whilst driving, but its beginning to concern me more and more of a probable warning sign. So what do you suggest and what should the compression readings be when I take it for a compression test on each cylinder?


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virgilmobile
Posts: 7660
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: Compression Readings

Postby virgilmobile » Tue Apr 22, 2014 7:40 am

My 78,80,81,83,84 and 88 all would smoke on start up when I leave the bike on the side stand for more than a day or two.
I also keep them to the top mark on oil and the bikes had tall suspension so they leaned quite far to the left.
Now iffin I put them on the centerstand,the smoke was greatly reduced if not completely gone.
Abnormal smoking after setting upright can be contributed to hardened valve guide seals.They can be replaced without pulling the heads.
If the rings were worn,it would tend to smoke while driving,not only just at startup.
As far as compression,it's tested with the throttle wide open....
I've run a gl1100 with it as low as 120 psi.
I like to see above 145 anyways.
Balance is more important than ammount.Expect a good engine to have no more than 5 psi difference between any cylinders.

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RBGERSON
Posts: 2625
Joined: Tue Mar 09, 2010 7:57 am
Location: SCOTTSDALE, AZ
Motorcycle: 98 SE GL 1500
had every year from 75 to 83

Re: Compression Readings

Postby RBGERSON » Tue Apr 22, 2014 8:29 am

+1 for VM I'll add try a 2x4 under the side stand or use the center stand over night smoke shoudl be less but really not a big deal on GL's it's a boxer engine thing...
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

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Jakez
Posts: 37
Joined: Tue Jan 21, 2014 12:05 am
Location: Delmas, Mpumulanga, South Africa
Motorcycle: 1981 GL1100 Standard.
email: sharky4life@gmail.com
BBM: 26DFAA9C

Re: Compression Readings

Postby Jakez » Tue Apr 22, 2014 8:37 am

Okay Guys, Thank You. I will do it tonight and send some feedback tomorrow morning. Thank you both for your feedback.
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moffat
Posts: 264
Joined: Thu Aug 05, 2010 2:30 pm
Location: Northwich United Kingdom
Motorcycle: 1982 GL1100
Interstate

Re: Compression Readings

Postby moffat » Tue Apr 29, 2014 1:57 pm

Lean the bike to the right on an axel stand under the foot rest and see if it makes any difference-

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Jakez
Posts: 37
Joined: Tue Jan 21, 2014 12:05 am
Location: Delmas, Mpumulanga, South Africa
Motorcycle: 1981 GL1100 Standard.
email: sharky4life@gmail.com
BBM: 26DFAA9C

Re: Compression Readings

Postby Jakez » Wed Apr 30, 2014 12:03 am

Hey guys, so I recently moved in to a new small holdings plot and the bike had a room of its own (out building) unlike the previous home where he slept under the lapa. Since then, starting is a dream and no smoke.


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