GL1100i engine rebuilding


Information and questions on GL1100 Goldwings (1980-1983)
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virgilmobile
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GL1100i engine rebuilding

Postby virgilmobile » Sun Oct 03, 2010 8:33 pm



Just a simple Question:After a complete rebuild(rings,valves,etc)is it really necessary to re-torque the heads after the first warm up?



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WingAdmin
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Re: GL1100i engine rebuilding

Postby WingAdmin » Mon Oct 04, 2010 11:14 am

A simple answer: Yes. :)

OK, is it necessary? No. Is it a good idea? Yes. During the first heat cycle, all the parts that have been re-mated will heat and cool at different rates, shifting against one another ever so slightly. This can cause changes in the pressure being applied by the torqued bolts. You really, REALLY want it to be held together evenly (which is why you torque the bolts in the pattern you do when assembling). So after that heat cycle (and once it's stone left-overnight cold again), re-torque those bolts just to make sure the pressure is even. It's good practice for engine longevity.

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virgilmobile
Posts: 7663
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: GL1100i engine rebuilding

Postby virgilmobile » Mon Oct 04, 2010 3:49 pm

I understand,I'm a little gun shy,the very last head bolt stripped all the threads out at 37lb.$60 later its good to go.Is re-torquing by backing off a little then hitting it again at 40lb?

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WingAdmin
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Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: GL1100i engine rebuilding

Postby WingAdmin » Mon Oct 04, 2010 7:22 pm

Nope, I'd just hit it with the clicker wrench right at 40 ft-lb (or whatever it's supposed to be). If it doesn't move, you're good. A single heat cycle isn't enough to bind them up where the torque wrench has to break them free before it can re-set the torque.

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virgilmobile
Posts: 7663
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: GL1100i engine rebuilding

Postby virgilmobile » Mon Oct 04, 2010 7:39 pm

Wonderful,I'll run over them again.Just a side note:The striped hole,I repaired with 2 inserted Helicoils.I tested this on a old block first and pulled 70lb easy.The Schrader clutch for the starter was stuck and intermittently squealing.8 oz of marvel mystery oil and 30 minutes of running up and down the rpm it cleared up ok.So far it starts and runs like a car motor.I'm pleased with the backyard rebuild.Thanks for the advice.Virgil

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WingAdmin
Site Admin
Posts: 17050
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: GL1100i engine rebuilding

Postby WingAdmin » Tue Oct 05, 2010 7:46 pm

The starter clutch gets little lubrication, and sludge tends to build up in there. If you can get the bike running, and get some MMO or Seafoam into the crankcase, it will generally clean that sludge up and fix the starter clutch. Glad to hear you got yours fixed.




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