GL1000 1976 - Head gasket

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nicdes
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Re: GL1000 1976 - Head gasket

#76

Post by nicdes »

Hi guys,
I guess Im almost done with cleaning everything prior to reassembling all of it.
In fact, the more I get close to it the more I slow down. I have to admit I get kind of anxious to make mistakes when mounting it all back...
Today, I lapped the valves very gently. I noticed that exhaust valve n°3's stem was clearly coated with some kind of limestone and looks heavier than the others. It could confirm the trouble with the gasket this side...
What would you suggest to remove this coating ? Can I safely put it in an acid solution like vinegar or some phosphoric acid ?
Valve stem 3
Valve stem 3
20220615_200819.jpg (170.54 KiB) Viewed 478 times
Valve stem 1
Valve stem 1
20220615_200857.jpg (157.42 KiB) Viewed 478 times
GL1000 1976 - smooth and unstoppable, be aware ur safety distance ;)
SRX 600 1987 - stroke and agility, catch me if u can
https://www.youtube.com/channel/UCMB875 ... WWNj5MtKAw
https://soundcloud.com/nicdes
nicdes
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Re: GL1000 1976 - Head gasket

#77

Post by nicdes »

I've seen many videos showing guys cleaning their valves with drill and scotchbrite red. Wouldn't it be too agrssive for our coated valves ?
GL1000 1976 - smooth and unstoppable, be aware ur safety distance ;)
SRX 600 1987 - stroke and agility, catch me if u can
https://www.youtube.com/channel/UCMB875 ... WWNj5MtKAw
https://soundcloud.com/nicdes
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gltriker
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Re: GL1000 1976 - Head gasket

#78

Post by gltriker »

Put on leather gloves and work on the carbon deposit with a wire wheel.

Work determined to remove the deposits, not just burnish the accumulated deposits.
Cliff (74yrs ;) )

Keep your eyes and ears open and you'll learn something new, everyday. tumb2

New users please visit our "Shop Talk" for common tips and help: <---jdvorchak
http://www.ngwclub.com/forum/page/ST
^^^^^^^click up here^^^^^ :oldies

RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi tumb2
"Can't see the paint when your looking thru the handlebars..........." -Oldewing ;)
"I'd rather Ride than Shine" -RAT tumb2 Me Too!!

Cliff

'75 GL1000 home built trike; http://www.ngwclub.com/forum/viewtopic.php?f=30&t=39996
October,2017 BOTM :shock: https://nakedgoldwingsclub.com/forum/page/Welcome

previous rides:
1953 H-D Servi-car, naked, 1969-1978 (serial#53G1559 committed to memory!)
1980 CB900 Custom (triked) 1997-2003 .... R.I.P.
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pidjones
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Re: GL1000 1976 - Head gasket

#79

Post by pidjones »

nicdes wrote: Thu Jun 16, 2022 4:29 pm I've seen many videos showing guys cleaning their valves with drill and scotchbrite red. Wouldn't it be too agrssive for our coated valves ?
I believe that the only place they are coated is on the seating area. As long as the deposit is not flaking off or in the area of the guide, I'd leave it.

BTW, the pitting on the sealing face of #1 seems pretty extensive. I'd consider a new replacement if compression is in doubt. Last I bought them (a few years ago), exhaust were ~$20-25 each on partsnmore.
"Love 'em all.... let God sort 'em out!"
Ex 2006 GL1800 - the Black Pearl SOLD! to make room for:
2021 Can-Am Spyder RT Limited Dark Chalk Metallic
1975 Red GL1000 project - ex Pistol Pete project
1972 Triumph T150V Trident rescue - finished and FOR SALE!
1976 Yamaha RD400c
1978 GL1000 with '75 engine - the Hunley
Ex 1978 GL1000
Ex 1979 GL1000
Ex '79 CB750F rat bike
Ex '86 SEi
Ex '77 GL1000
Ex '76 RD400
Ex '72 Penton 125 set up for flat track
Ex '73 RD250
Ex '68 TR6C - chopped
nicdes
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Re: GL1000 1976 - Head gasket

#80

Post by nicdes »

pidjones wrote: Thu Jun 16, 2022 8:26 pm BTW, the pitting on the sealing face of #1 seems pretty extensive. I'd consider a new replacement if compression is in doubt. Last I bought them (a few years ago), exhaust were ~$20-25 each on partsnmore.
Can I consider replacing only one with new and leave the three other old ones in place ?
GL1000 1976 - smooth and unstoppable, be aware ur safety distance ;)
SRX 600 1987 - stroke and agility, catch me if u can
https://www.youtube.com/channel/UCMB875 ... WWNj5MtKAw
https://soundcloud.com/nicdes
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Lucien Harpress
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Re: GL1000 1976 - Head gasket

#81

Post by Lucien Harpress »

If the others look good, I see no reason why not.
1997 Valkyrie- Light Cutomization, but Too Busy Riding
1980 KZ1300- Bike's Haunted
1976 GL1000 (Yellow)- It Runs (Poorly) and Doesn't Leak (Mostly)
1974 Velosolex 3800- Better Than Walking
1972 CB750- Broke the Chain And Ate the Motor
1969 CT90- The Most Fun You Can Have on 90ccs.
1965 CA77 Dream- Needs a Full Teardown, but Complete

All advice I give is only valid until an expert corrects me.
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pidjones
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Re: GL1000 1976 - Head gasket

#82

Post by pidjones »

nicdes wrote: Fri Jun 17, 2022 1:50 pm
pidjones wrote: Thu Jun 16, 2022 8:26 pm BTW, the pitting on the sealing face of #1 seems pretty extensive. I'd consider a new replacement if compression is in doubt. Last I bought them (a few years ago), exhaust were ~$20-25 each on partsnmore.
Can I consider replacing only one with new and leave the three other old ones in place ?
Sure. Just replace the ones that need it.
"Love 'em all.... let God sort 'em out!"
Ex 2006 GL1800 - the Black Pearl SOLD! to make room for:
2021 Can-Am Spyder RT Limited Dark Chalk Metallic
1975 Red GL1000 project - ex Pistol Pete project
1972 Triumph T150V Trident rescue - finished and FOR SALE!
1976 Yamaha RD400c
1978 GL1000 with '75 engine - the Hunley
Ex 1978 GL1000
Ex 1979 GL1000
Ex '79 CB750F rat bike
Ex '86 SEi
Ex '77 GL1000
Ex '76 RD400
Ex '72 Penton 125 set up for flat track
Ex '73 RD250
Ex '68 TR6C - chopped
nicdes
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Location: Haute-Savoie France

Re: GL1000 1976 - Head gasket

#83

Post by nicdes »

pidjones wrote: Fri Jun 17, 2022 4:35 pm
nicdes wrote: Fri Jun 17, 2022 1:50 pm
pidjones wrote: Thu Jun 16, 2022 8:26 pm BTW, the pitting on the sealing face of #1 seems pretty extensive. I'd consider a new replacement if compression is in doubt. Last I bought them (a few years ago), exhaust were ~$20-25 each on partsnmore.
Can I consider replacing only one with new and leave the three other old ones in place ?
Sure. Just replace the ones that need it.
Today partsnmore sells the exhaust valve for 22$. Honda sells it for almost 80. How can partsnmore be OEM ? Even if not OEM, do they worth it ?
GL1000 1976 - smooth and unstoppable, be aware ur safety distance ;)
SRX 600 1987 - stroke and agility, catch me if u can
https://www.youtube.com/channel/UCMB875 ... WWNj5MtKAw
https://soundcloud.com/nicdes
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pidjones
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Re: GL1000 1976 - Head gasket

#84

Post by pidjones »

I am running partsnmore valves. They seem fine.
"Love 'em all.... let God sort 'em out!"
Ex 2006 GL1800 - the Black Pearl SOLD! to make room for:
2021 Can-Am Spyder RT Limited Dark Chalk Metallic
1975 Red GL1000 project - ex Pistol Pete project
1972 Triumph T150V Trident rescue - finished and FOR SALE!
1976 Yamaha RD400c
1978 GL1000 with '75 engine - the Hunley
Ex 1978 GL1000
Ex 1979 GL1000
Ex '79 CB750F rat bike
Ex '86 SEi
Ex '77 GL1000
Ex '76 RD400
Ex '72 Penton 125 set up for flat track
Ex '73 RD250
Ex '68 TR6C - chopped
nicdes
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Posts: 59
Joined: Thu Jan 27, 2022 5:23 pm
Location: Haute-Savoie France

Re: GL1000 1976 - Head gasket

#85

Post by nicdes »

gltriker wrote: Mon May 02, 2022 8:46 am According to the official Honda GL1000 Shop Manual , the torque spec. for the camshaft pulley cap screw is 250- 290 kg.-cm , 18-21 lb. -ft.
Hi guys,
I'm mounting back everything after cleaning and surfacing the heads.
In order to change the seals on the camshaft, I removed this screw for the ignition system on the left cam :
20220807_155757.jpg
20220807_155757.jpg (114.85 KiB) Viewed 328 times
I can't find the torque for screwing it back...
Do one of you know it ?
Thanx in advance !
GL1000 1976 - smooth and unstoppable, be aware ur safety distance ;)
SRX 600 1987 - stroke and agility, catch me if u can
https://www.youtube.com/channel/UCMB875 ... WWNj5MtKAw
https://soundcloud.com/nicdes
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Whiskerfish
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Re: GL1000 1976 - Head gasket

#86

Post by Whiskerfish »

If it is not in the book then I apply standard torques based on the size of the bolt shaft. here https://ngwclub.com/forum/viewtopic.php ... 56#p453196
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and a whole garage full of possibilities!!

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nicdes
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Re: GL1000 1976 - Head gasket

#87

Post by nicdes »

Whiskerfish wrote: Sun Aug 07, 2022 10:53 am If it is not in the book then I apply standard torques based on the size of the bolt shaft. here https://ngwclub.com/forum/viewtopic.php ... 56#p453196
Thank you Whiskerfish, I couldn't find it so I made it 10Nm as it's a 6mm bolt nut.
Im on my way ;)
GL1000 1976 - smooth and unstoppable, be aware ur safety distance ;)
SRX 600 1987 - stroke and agility, catch me if u can
https://www.youtube.com/channel/UCMB875 ... WWNj5MtKAw
https://soundcloud.com/nicdes
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gltriker
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Re: GL1000 1976 - Head gasket

#88

Post by gltriker »

nicdes wrote: Sun Aug 07, 2022 10:12 am
gltriker wrote: Mon May 02, 2022 8:46 am According to the official Honda GL1000 Shop Manual , the torque spec. for the camshaft pulley cap screw is 250- 290 kg.-cm , 18-21 lb. -ft.
Hi guys,
I'm mounting back everything after cleaning and surfacing the heads.
In order to change the seals on the camshaft, I removed this screw for the ignition system on the left cam :
20220807_155757.jpg
I can't find the torque for screwing it back...
Do one of you know it ?
Thanx in advance !
After reading the advancer assembly was removed from this camshaft to replace the adjacent oil seal assy. , I need to know the round pin in the shoulder of the camshaft that the notch on the back of the advancer assy indexes with was still in its assigned place. Please ;)
If that round pin has been dislodged and not noticed as missing, the advancer assembly will spin freely on the camshaft stub.
Cliff (74yrs ;) )

Keep your eyes and ears open and you'll learn something new, everyday. tumb2

New users please visit our "Shop Talk" for common tips and help: <---jdvorchak
http://www.ngwclub.com/forum/page/ST
^^^^^^^click up here^^^^^ :oldies

RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi tumb2
"Can't see the paint when your looking thru the handlebars..........." -Oldewing ;)
"I'd rather Ride than Shine" -RAT tumb2 Me Too!!

Cliff

'75 GL1000 home built trike; http://www.ngwclub.com/forum/viewtopic.php?f=30&t=39996
October,2017 BOTM :shock: https://nakedgoldwingsclub.com/forum/page/Welcome

previous rides:
1953 H-D Servi-car, naked, 1969-1978 (serial#53G1559 committed to memory!)
1980 CB900 Custom (triked) 1997-2003 .... R.I.P.
nicdes
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Posts: 59
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Location: Haute-Savoie France

Re: GL1000 1976 - Head gasket

#89

Post by nicdes »

Hi Cliff,

I noticed this round pin and left it in place when removing the advancer assembly (the cam was vertically clamped on the vice).
I checked also that the pin took its place in that notch when reaasembling it !
But I did made some mistakes already...forgot to install back the dowels and pulley seals and had to assembly twice the cams on the heads ;).
A real poor english translation for one of my french favorite expression: it's being a fly that you become a flyer

Tom
GL1000 1976 - smooth and unstoppable, be aware ur safety distance ;)
SRX 600 1987 - stroke and agility, catch me if u can
https://www.youtube.com/channel/UCMB875 ... WWNj5MtKAw
https://soundcloud.com/nicdes
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gltriker
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Re: GL1000 1976 - Head gasket

#90

Post by gltriker »

tumb2 Very Good. Thanks for letting me know, Tom tumb2
Cliff (74yrs ;) )

Keep your eyes and ears open and you'll learn something new, everyday. tumb2

New users please visit our "Shop Talk" for common tips and help: <---jdvorchak
http://www.ngwclub.com/forum/page/ST
^^^^^^^click up here^^^^^ :oldies

RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi tumb2
"Can't see the paint when your looking thru the handlebars..........." -Oldewing ;)
"I'd rather Ride than Shine" -RAT tumb2 Me Too!!

Cliff

'75 GL1000 home built trike; http://www.ngwclub.com/forum/viewtopic.php?f=30&t=39996
October,2017 BOTM :shock: https://nakedgoldwingsclub.com/forum/page/Welcome

previous rides:
1953 H-D Servi-car, naked, 1969-1978 (serial#53G1559 committed to memory!)
1980 CB900 Custom (triked) 1997-2003 .... R.I.P.
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