1982 GL1100 splitting cases...stuck!!


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SneakyPete1100
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Location: Buckingham, England, United Kingdom
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1999 Yamaha VMax

1982 GL1100 splitting cases...stuck!!

Postby SneakyPete1100 » Fri Jun 27, 2014 5:59 am



Greeting from soggy England all you WingNuts out there!

I have been running my '82 GL1100 for 17 years now - I'm up around 130,000 miles on top of unknown previous owner miles, and am stripping down the motor for a full rebuild.

However, after removing all the crankcase bolts (including the two on the wrong side) I cannot split the cases. The previous owner obviously had similar problems because the water pump mount had sheared off and was welded back on (I found this out when I sheared it off again).

I am currently suspending the motor left side up and applying blunt force to the lugs on the right side case. I am getting the 'hollow' sound of separation from the clutch end but the joint at the front will not budge.

I have now bolted the left head back on with a block of wood in the bore and a ratchet strap loading the crankshaft nut to apply an internal force to spilt the case (not too happy with this bodge as I know the fragility of 'Wing heads)

Any seasoned mechanics out there got better ideas??

BTW - this is my bike:



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Re: 1982 GL1100 splitting cases...stuck!!

Postby WingAdmin » Fri Jun 27, 2014 10:59 am

Normally a dead blow hammer will knock it free - at least enough that you can fit some wood shims in and start knocking them in to pry it apart. The sealant can hold tight, but it's usually corrosion on the dowels that won't release that causes them to stick together.

You might try threading one or two of the bolts in partway and giving them a sharp (but gentle) rap to see if that helps jog it apart.

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ankgrays
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Re: 1982 GL1100 splitting cases...stuck!!

Postby ankgrays » Fri Jun 27, 2014 4:33 pm

That's a different looking bike...kinda ugly kinda not.

I like it though...kinda like a "Mad Max" type of bike.

I think your idea of carrying an ohm meter is great! I'd never thought of that. I've got a small one I'm going to put in the bags right now.

(Good luck with the bike)
I don't tolerate voluntary stupidity very well, and it seems to be rampant now-a-days.

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SneakyPete1100
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Re: 1982 GL1100 splitting cases...stuck!!

Postby SneakyPete1100 » Sat Jun 28, 2014 5:47 am

WingAdmin wrote:You might try threading one or two of the bolts in partway and giving them a sharp (but gentle) rap to see if that helps jog it apart.


Hey, I like that thought - will give it a bash (literally!)

Cheers

SneakyPete

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ankgrays
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Re: 1982 GL1100 splitting cases...stuck!!

Postby ankgrays » Sat Jun 28, 2014 12:36 pm

Jeeez!!

I was kinda tired when I posted my comments...

The ohm meter comment was meant for the post above you...(sorry)

But still...good luck with the awesome bike!
I don't tolerate voluntary stupidity very well, and it seems to be rampant now-a-days.

"One of the problems about quotes from the internet, is that one cannot confirm their validity." - Abraham Lincoln

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Ed Z
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Re: 1982 GL1100 splitting cases...stuck!!

Postby Ed Z » Thu Jul 03, 2014 2:47 pm

Have you tried a heat gun to heat up the area that have the locating pins in them ??? I'm betting the previous owner used a gasket adhesive when they were in there...

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SneakyPete1100
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Re: 1982 GL1100 splitting cases...stuck!!

Postby SneakyPete1100 » Thu Jul 03, 2014 3:07 pm

Cheers Ed Z - is that YOUR wing? seen plenty of pics of that on the ratbike sites - nice!

Got the cases apart - combination of heat, sweat and tears!


Quite a bit of gasket crud in the oil strainer... hmm.

Now to check all moving surfaces for wear tolerances.

Will keep this thread going in case anyone is interested in gutting a Wing.

SneakyPete

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Re: 1982 GL1100 splitting cases...stuck!!

Postby WingAdmin » Thu Jul 03, 2014 3:54 pm

That is quite a bit of stuff in the strainer - is it actual gasket material, or RTV type stuff?

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SneakyPete1100
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Re: 1982 GL1100 splitting cases...stuck!!

Postby SneakyPete1100 » Thu Jul 03, 2014 6:00 pm

It's RTV - soft and gunky, not hard metallic (phew). Next up is strip out all the moving parts and see if the bores are ok for honing - have to keep standard bore as no oversize pistons available (well, none that are sensible money!)

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Ed Z
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Re: 1982 GL1100 splitting cases...stuck!!

Postby Ed Z » Thu Jul 03, 2014 7:10 pm

Kinda of a shame that Honda did'nt make an oil pan on the Wings like they did on the Sliverwings (GL500 and Gl650)... A mere 8 bolts and you have the oil pump lookin at ya...
http://images.cmsnl.com/img/partslists/ ... 9_5d01.jpg


Your's looks to be in reasonable condition for the milage it has...

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SneakyPete1100
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Re: 1982 GL1100 splitting cases...stuck!!

Postby SneakyPete1100 » Fri Jul 04, 2014 7:04 am

Ed Z wrote:Kinda of a shame that Honda did'nt make an oil pan on the Wings


That's true, but the Wing motor is has an incredibly well engineered lube system - my old engine warped its heads halfway through a tour of Europe, all water lost and could not be contained (even after a head gasket rebuild in a field) so the bike was ridden 900 miles home just on oil alone - towing a trailer!

Used over 15 litres of oil and ran very hot indeed, got several worried looks when I stopped for refuelling with the motor on high tickover (starter was fried trying to turn the hot engine). Still have that motor complete with solid tar in the crankcase!!

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Re: 1982 GL1100 splitting cases...stuck!!

Postby Old Fogey » Sat Jul 05, 2014 10:49 am

SneakyPete1100 wrote:
Ed Z wrote:Kinda of a shame that Honda did'nt make an oil pan on the Wings


That's true, but the Wing motor is has an incredibly well engineered lube system - my old engine warped its heads halfway through a tour of Europe, all water lost and could not be contained (even after a head gasket rebuild in a field) so the bike was ridden 900 miles home just on oil alone - towing a trailer!

Used over 15 litres of oil and ran very hot indeed, got several worried looks when I stopped for refuelling with the motor on high tickover (starter was fried trying to turn the hot engine). Still have that motor complete with solid tar in the crankcase!!


On the 1200, you have to split the cases just to get at the crankcase filter!

Please people, when you are splitting the cases, before you get them completely apart ram some rags in there to prevent the pistons and rods from hitting off the crankcase or gears! As noted above, pistons are not exactly cheap or plentiful.


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