DREADED HEAD GASKETS.........


Information and questions on GL1100 Goldwings (1980-1983)
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achowler1
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Motorcycle: 1983 GL1100 Aspencade

DREADED HEAD GASKETS.........

Postby achowler1 » Wed Sep 14, 2011 8:27 pm



Heya! I've been a member for a while, and i've enjoyed the how-to articles regularly with my 83 aspy. This 83 i purchased a couple years ago cheap, as i had to put head gaskets on it. Lo and behold, after i complete the repair - i find and join this site!!! I purchased aftermarket head gaskets and the same one failed again after 10K miles?????? OK, so the original honda head gasket made it 16K, and aftermarker 10K - is this a common dilemma for the " boxer 4" cylinder???? I havent pulled the head off yet, been enjoying the 01 shadow for a few months.... but if the same fire ring is split, any suggestions? (no city driving here, all highway)



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virgilmobile
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Re: DREADED HEAD GASKETS.........

Postby virgilmobile » Wed Sep 14, 2011 8:40 pm

Perfectly flat block,the same for the head,new OEM gasket,Proper torque sequence and re-torque,re-check everything.I followed these rules and never had a problem.

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RBGERSON
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Re: DREADED HEAD GASKETS.........

Postby RBGERSON » Thu Sep 15, 2011 7:37 am

You've done something wrong or have gotten defective gaskets..as said above clean flat heads and block, torqued correct sequence and re torque after 50 easy miles, lube threads with moly paste and use a good/accurate torque wrench. Should last at least 100,000 miles if not 300,000
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

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dnehasert
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Re: DREADED HEAD GASKETS.........

Postby dnehasert » Thu Sep 15, 2011 6:48 pm

Did you retirque the headgaskets a second time ? I followed Randaaks way and have had no problem. On a previous Wing I did not retorque the heads and they went bad again quickly. Doug

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twostrokes48
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Re: DREADED HEAD GASKETS.........

Postby twostrokes48 » Sat Sep 17, 2011 7:49 am

I agree with all the above, I have had 3 wings and never have had a head gasket blow and a lotta miles put on those bikes...the retorque is important.

achowler1
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Re: DREADED HEAD GASKETS.........

Postby achowler1 » Sat Sep 17, 2011 4:11 pm

Thanks for the great advice! I will check the heads and block again for warpage, and redo these and retorque.

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Re: DREADED HEAD GASKETS.........

Postby Old Fogey » Sun Sep 18, 2011 12:34 pm

Why did the original one only make it to 16k?

When you replace the bolts make sure that you grease them, both the threads and under the bolt head flange. Failure to do this will result in incorrect torque figures.
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achowler1
Posts: 31
Joined: Sun Feb 14, 2010 12:59 pm
Location: graettinger, iowa
Motorcycle: 1983 GL1100 Aspencade

Re: DREADED HEAD GASKETS.........

Postby achowler1 » Sun Sep 18, 2011 6:54 pm

I dont know, i am kinda baffled by that. The original fire ring was split and the combustion etched its way to a coolant passage.

achowler1
Posts: 31
Joined: Sun Feb 14, 2010 12:59 pm
Location: graettinger, iowa
Motorcycle: 1983 GL1100 Aspencade

Re: DREADED HEAD GASKETS.........

Postby achowler1 » Sun Sep 18, 2011 6:56 pm

Old Fogey wrote:Why did the original one only make it to 16k?

When you replace the bolts make sure that you grease them, both the threads and under the bolt head flange. Failure to do this will result in incorrect torque figures.

Ok, so am i understanding you correctly that i need to get new bolts? Are they torque to yield?

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Re: DREADED HEAD GASKETS.........

Postby Old Fogey » Mon Sep 19, 2011 8:52 am

No, I meant replacing them in the head, not buying new ones. Honda don't specify new bolts when doing the job but I personally feel that if you are having trouble with gaskets blowing, it seems sensible to eliminate that possible source of failure.
The torque figures: first torque all six bolts to 25ft/lbs in the following sequence,
lower middle, top middle, lower left, top right, lower right, top left.
Repeat sequence to final torque of 37-40 ft/lbs.
Fit the 10mm bolt right at the bottom of the head and torque to 18-21ft/lbs.


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