Cylinder Head Removal


Information and questions on GL1000 Goldwings (1975-1979)
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CamBam
Posts: 14
Joined: Sun Jul 16, 2017 6:24 pm
Location: Palmdale
Motorcycle: 1976 GL1000 Goldwing

Cylinder Head Removal

Post by CamBam »



Hi,
I just recently bought a 1976 GL1000 from a guy on craigslist. I bought the bike knowing i had to fix it. It is obvious that the cylinder head and valves are in terrible shape. I have removed the cam shaft and everything else holding on the cylinder head, Im not quite sure how to break the head loose. Everything holding it on has been taken off, it is just glued on there. How do I get to cylinder head off without ruining it?


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newday777
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Location: Milford NH summer/fall & Oceanside, CA winters(N San Diego) with lots of miles riden between
Motorcycle: 2008 Cabernet Red. Level 4

1983 GL1100A Wineberry 36,000 miles

1975 CB750 K5 Planet Blue 7,800 miles

1976 CB750 K6 Anterris Red 25,000 miles

Past rides
1999A Restored from PO neglect & sold at 19,000 miles

1999SE Totaled by cager at 105,000 miles

Re: Cylinder Head Removal

Post by newday777 »

Did you remove the small bolt below the exhaust outlet? 10mm head.
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newday777
Posts: 2136
Joined: Tue Jan 11, 2011 5:21 pm
Location: Milford NH summer/fall & Oceanside, CA winters(N San Diego) with lots of miles riden between
Motorcycle: 2008 Cabernet Red. Level 4

1983 GL1100A Wineberry 36,000 miles

1975 CB750 K5 Planet Blue 7,800 miles

1976 CB750 K6 Anterris Red 25,000 miles

Past rides
1999A Restored from PO neglect & sold at 19,000 miles

1999SE Totaled by cager at 105,000 miles

Re: Cylinder Head Removal

Post by newday777 »

CamBam
Posts: 14
Joined: Sun Jul 16, 2017 6:24 pm
Location: Palmdale
Motorcycle: 1976 GL1000 Goldwing

Re: Cylinder Head Removal

Post by CamBam »

Yes I did, it is just so caked up with 40 years worth of crud
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newday777
Posts: 2136
Joined: Tue Jan 11, 2011 5:21 pm
Location: Milford NH summer/fall & Oceanside, CA winters(N San Diego) with lots of miles riden between
Motorcycle: 2008 Cabernet Red. Level 4

1983 GL1100A Wineberry 36,000 miles

1975 CB750 K5 Planet Blue 7,800 miles

1976 CB750 K6 Anterris Red 25,000 miles

Past rides
1999A Restored from PO neglect & sold at 19,000 miles

1999SE Totaled by cager at 105,000 miles

Re: Cylinder Head Removal

Post by newday777 »

I use a soft blow hammer and a block of wood to loosen it then use a small pry bar working around the head. Most likely there is some rust on the dowel pins.
Did you check the post on the How To ?
CamBam
Posts: 14
Joined: Sun Jul 16, 2017 6:24 pm
Location: Palmdale
Motorcycle: 1976 GL1000 Goldwing

Re: Cylinder Head Removal

Post by CamBam »

Yes I did, thanks. I was able to get one side off by heating up the edges and banging it with a rubber Mallot. The other side is being way more stubborn. The guy told me the bike didn't run very well, I see that it's because the head is so incredibly caked up.
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ekvh
Posts: 409
Joined: Thu Apr 29, 2010 9:52 am
Location: Grand Forks, ND
Motorcycle: 1977 gl1000

Re: Cylinder Head Removal

Post by ekvh »

It may help to apply some upward force. Gravity has been pushing it the other way for years. I use a broom handle sized wooden lever in the exhaust port. A couple raps from below usually does it for me.
CamBam
Posts: 14
Joined: Sun Jul 16, 2017 6:24 pm
Location: Palmdale
Motorcycle: 1976 GL1000 Goldwing

Re: Cylinder Head Removal

Post by CamBam »

I actually just tried that right now. Thank God!! It came off!! Thank you for your help.
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newday777
Posts: 2136
Joined: Tue Jan 11, 2011 5:21 pm
Location: Milford NH summer/fall & Oceanside, CA winters(N San Diego) with lots of miles riden between
Motorcycle: 2008 Cabernet Red. Level 4

1983 GL1100A Wineberry 36,000 miles

1975 CB750 K5 Planet Blue 7,800 miles

1976 CB750 K6 Anterris Red 25,000 miles

Past rides
1999A Restored from PO neglect & sold at 19,000 miles

1999SE Totaled by cager at 105,000 miles

Re: Cylinder Head Removal

Post by newday777 »

I hope you set the timing marks before you pulled it apart so the belts are ready to put back on without spinning the crank
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ekvh
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Location: Grand Forks, ND
Motorcycle: 1977 gl1000

Re: Cylinder Head Removal

Post by ekvh »

He's doing both heads, so it won't matter.
CamBam
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Joined: Sun Jul 16, 2017 6:24 pm
Location: Palmdale
Motorcycle: 1976 GL1000 Goldwing

Re: Cylinder Head Removal

Post by CamBam »

How do I get the timing correct? I didn't mark any timing marks.
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ekvh
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Location: Grand Forks, ND
Motorcycle: 1977 gl1000

Re: Cylinder Head Removal

Post by ekvh »

Since you have both heads off, I always set the marks to T1 and then rotate counterclockwise a bit to put the pistons down in the cylinders some. Then after heads are torqued down, set the pulleys with the UP marks up and the pulley marks aligned, then rotate it clockwise back to T1. Put on the belts. That way you shouldn't ding any valves. Leaving the valve adjusters backed off aids in getting belts on.

Revised head bolt figures were raised to 41-44ft lbs I think.

Clean bolt threads, clean threads in the block, put grease on both sides of the washers of the head bolts.

New dowels for the heads are still available from Honda. Cheap.

Make sure you get the o-rings for each oil orifice, which goes small end into the block.

That's all I got
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DenverWinger
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1972 CL350 (1980-1988) sold
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Re: Cylinder Head Removal

Post by DenverWinger »

Another trick for loosening stubborn heads:
(We assume you've already removed the timing belts and are now disgusted that the heads won't come off....)

If you don't plan on removing the cams, you need to re-install the timing belts in proper time, but set the tensioners so the belts are sloppy loose. Rotate the crank at least two full turns by hand to be sure there's no resistance! If you are going to remove the cams, take them out now and you can skip the belts.

Put four corner head bolts back in, but not all the way, unscrewed by 4-5 turns. Screw in the spark plugs.

Hit the starter button. The compression will blow the heads loose from the gaskets, and the partially screwed in head bolts will keep them from falling on the floor.
♫ 99 Little Bugs in the Code, ♪
♪ 99 Bugs in the Code. ♫ :(
♫ Take one down, Patch it around, ♪
♫ 127 Little Bugs in the Code. ♫ ♪ :shock:

~Mark
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ekvh
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Location: Grand Forks, ND
Motorcycle: 1977 gl1000

Re: Cylinder Head Removal

Post by ekvh »

That sounds too easy and too smart. Gotta remember that one.


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