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Discussion Starter · #1 ·
Well the project is going great thanks to everyone's input from the forum. Big merry Xmas and thank you all.

Frame, wheels and accessories painted.
Electrics done
Chrome work finished
Carbies finished

It's time to start on the engine. Engine was out because the spark plug thread was broken in the head. So the only things I had on the list are:

New head gaskets
New Valve stem seals
New Cam timing belts

I have never had the bike running so do not know how good the engine is so I am crossing fingers. Does anyone have a list of things I should do or check while the engine is out so I do hopefully not have to take it out again.

I can do the research on how to do the jobs but do not have any idea of common problems that are easier to do while the engine is out.

I have a complete engine gasket set so any input much appreciated.
 

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Merry Christmas Cakey , may your new year be filled with riding the bike .
You dont mention where you purchased the gasket set ( brand ) , but there are problems with off brand head gaskets not lasting . Hopefully your set is from Mother Honda or your lucky enough they hold up well for you .
since you have the engine out of frame , you might remove the oil strainer and clean it . This is located on the right side of the block toward the front lower mounting bolt . A small cover i believe help with two bolts .
If your real particular about not wanting to take anything apart after the bike is back to running , you might also replace the water pump while engine is on bench/stand .
Also while the heads are off I'd say go ahead and replace the thermostat and all O-rings for the water crossover pipes . I believe there is listing for an automotive thermostat part# to use here in the forum , or you can find it listed at Randakk's Cycle Shakk - Honda GL1000 Specialist: GL1000 GL1100 Tech Tip#9
 

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Neutral switch for sure. If you're doing heads and valve stems, replace cam seals, they're cheap and there is a cross reference for them. Most Napa carry them. Check water pump. They are fairly expensive, but worth swapping for peace of mind if you plan on longer trips.
 

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You didn't say how many miles were on the motor but if it were mine and I had it apart, I think at this time I would renew the water pump and shifter springs. And check/ clean the filter screen. It would stink to get it all back together and have the water pump be leaking. Just my devalued 2 cents. Good luck.,,
 

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Discussion Starter · #5 ·
Thanks guys, on the list

Water pump
Filter screens
Cam seals
Thermostat and o rings
Shifter springs
Neutral switch
Oil strainer

Is there a reliable way to check the generator? Or do they have a pretty good rep for lasting?

To answer a couple of questions

1. No the gasket set is not from mother Honda. Should I get Orem Honda for the heads and use the rest of the set on the bike?
2. 50,000 k on the bike. I was told that the previous owner spent a few thousand on the bottom end. Pistons and bore were very clean when I ha the heads off.
 

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I would go through the clutch and replace the springs if the plates look good you may reuse them. But the spring, diaphragm or coil, tend to weaken with age and heat cycles. Just my opinion.
 

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Discussion Starter · #7 ·
Good call
 

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Discussion Starter · #8 ·
Does anyone know the name of the seal (what looks like a round oil seal) in the housing behind the water pump?. I think the shaft of thenwater pump goes through the centre of it. It Looks a bit rough.
 

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Junior Grue
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Does anyone know the name of the seal (what looks like a round oil seal) in the housing behind the water pump?. I think the shaft of thenwater pump goes through the centre of it. It Looks a bit rough.
You'll find it in the oil pump fiche.
23 OIL SEAL (10X25X7)
91207-580-003
 

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Discussion Starter · #10 ·
Do you mean main oil pump seal? I found it on the diagram of the main oil pump in the Honda manual but it was not labelled. Thanks for the part number. Worth replacing while I am at it? Do you think it's worth pulling out the main pump cause I do not really know what I am looking for in wear and tear?
 

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Junior Grue
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Do you mean main oil pump seal? I found it on the diagram of the main oil pump in the Honda manual but it was not labelled. Thanks for the part number. Worth replacing while I am at it? Do you think it's worth pulling out the main pump cause I do not really know what I am looking for in wear and tear?
That seal should be replaced as it's the main cause of oil dripping out the weep hole.

I'd not worry about the oil pump as I've never heard of one failing.
 

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Discussion Starter · #12 ·
Great advice thanks Kenfor the info will definitely replace the seal.
 
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