Head gasket replacement and more??


Information and questions on GL1200 Goldwings (1984-1987)
  • Sponsored Links
crimsonwing
Posts: 85
Joined: Tue Mar 22, 2016 4:05 pm
Location: san diego, CA
Motorcycle: 1984 GL1200I Interstate

Head gasket replacement and more??

Postby crimsonwing » Sun May 01, 2016 12:58 am



Hey everyone, as some of you may know I will be replacing my head gaskets very soon. I decided to start a new thread about this as it will be very lengthy with all my questions and pictures and I want to make sure I get it right as i DO NOT want to do it again!. If you have already given me your two cent in the other thread, please still share your opinion if it differs from someone elses. i'm just waiting on parts, and I will be replacing water pump too as it seems to not be working(i will start another thread for this for same reason). Now to begin, i have ordered all the needed parts (gaskets, orings, etc). the only things I haven't ordered are valve stem covers and valve guides. Are these really needed? can I get away without replacing these? Secondly, the repair manual says to do a lot of things like disassemble the camshaft and inspect parts for wear and to replace parts if they are worn. Do I really need to do this as well? I was thinking i was just going to replace the gaskets and o rings to stop my leaks and that's it. I mean if i did end up needing to replace them, could? im not sure if these parts are available anymore....this is really starting to worry me

lastly, as I stated, I DO NOT WANT TO BE DOING THIS AGAIN!!!! any tips and tricks that will prevent me from having to do this again is deeply appreciated! can you share any mistakes that you have done to make yourself do it twice??!



User avatar
ekvh
Posts: 140
Joined: Thu Apr 29, 2010 9:52 am
Location: Grand Forks, ND
Motorcycle: 1977 gl1000

Re: Head gasket replacement and more??

Postby ekvh » Sun May 01, 2016 7:01 am

Get new dowel pins? Not necessary, but it is tough to clean around them and to get them out without deforming them. Aircraft paint stripper on a q-tip helps break down old gasket residue.

Most recommend OEM gaskets only. Check flatness per the manual of the head and block surfaces.

You can do it without removing carbs or water jacket elbow at the top of the head. Just bunny them up out of the way. Get new orings for the tubes, both sides. Many who remove the elbows break a bolt if they weren't installed with anti seize.

Getting the heads off is easier with some upward raps on the heads as well as with a wooden extension from all the way through under the carbs and against the intake ports. Gravity has been tapping them downwards for years. I have luck with a broom handle into the exhaust ports and then a tap upwards.

You didn't mention the mileage. Valve seals might be a good idea, but I don't recall reading of a lot of failures of them.

User avatar
twocams
Posts: 554
Joined: Tue Sep 29, 2015 11:25 am
Location: Grants Pass, Oregon
Motorcycle: 1985 GL1200 Aspencade, 2003 K1200GT BMW, 1969 R69S BMW
Sold : 84 V65 Magna, 82 Moto Guzzi, XS 1100 Yamaha,84 Wing Int., 80 650 Special, Only new bike 82 XV750 Virago (Guam),Honda 250,84 R100RT BMW,87 K100 LT BMW,93 K1100 LT BMW, 91 535 Virago, Honda 50

Re: Head gasket replacement and more??

Postby twocams » Sun May 01, 2016 10:44 am

If you dont want to do it again. I would take them to a machine shop and have them check for flatness/cracks. Also replace the valve stem seals. Aluminum heads even on cars as heavy as they are, warp.Change both radiator hoses,radiator cap & thermostat. You can buy those local parts store. Make sure that the cooling fan comes on way before red line. Check the wiring to fan/switch, may even change the switch if old and crusty looking. The one that turns the fan off and on automatically.If the fan doesn't work right, I can guarantee you will be doing it again/more. Carry a spare fuse for the fan...just incase. if your going to use a gasket sealer, DONT use RTV. Get a proper gasket sealer. Use a good coolant 50/50 at least more for colder climates. When in 100 deg. temps keep an eye on the temp gauge. Stop and go traffic is the worst on hot days. Keep your bike tuned up/ lean carburetors will make the cylinders run hotter. Synchronize the carbs so they are all pulling their share. Torque the heads using a good accurate torque wrench. In the bolt pattern in the book.
And there ya go, just my, .05 worth this time.

twocams

crimsonwing
Posts: 85
Joined: Tue Mar 22, 2016 4:05 pm
Location: san diego, CA
Motorcycle: 1984 GL1200I Interstate

Re: Head gasket replacement and more??

Postby crimsonwing » Sun May 01, 2016 3:16 pm

thanks guys, these are really helpful and detailed responses! twocams, do these parts need to be OEM? I can take the cap and stat down to the store and they should be able to match it up right? would i be that much better with OEM cap n stat> or does it really matter that much? ekvh, sorry i forgot to mention that it has 32,000 right now, but im not sure if that's accurate. at the gauge cover on the dashboard was split and cut like someone opened it and tinkered with the meters and stuff
Last edited by crimsonwing on Sun May 01, 2016 6:44 pm, edited 1 time in total.

User avatar
twocams
Posts: 554
Joined: Tue Sep 29, 2015 11:25 am
Location: Grants Pass, Oregon
Motorcycle: 1985 GL1200 Aspencade, 2003 K1200GT BMW, 1969 R69S BMW
Sold : 84 V65 Magna, 82 Moto Guzzi, XS 1100 Yamaha,84 Wing Int., 80 650 Special, Only new bike 82 XV750 Virago (Guam),Honda 250,84 R100RT BMW,87 K100 LT BMW,93 K1100 LT BMW, 91 535 Virago, Honda 50

Re: Head gasket replacement and more??

Postby twocams » Sun May 01, 2016 3:50 pm

i just got my cap,thermostat & hoses from O'reilly auto parts. They seem to work real nice :D

twocams

crimsonwing
Posts: 85
Joined: Tue Mar 22, 2016 4:05 pm
Location: san diego, CA
Motorcycle: 1984 GL1200I Interstate

Re: Head gasket replacement and more??

Postby crimsonwing » Sun May 01, 2016 6:52 pm

o'rielly's huh, ill definitely consider that!!

crimsonwing
Posts: 85
Joined: Tue Mar 22, 2016 4:05 pm
Location: san diego, CA
Motorcycle: 1984 GL1200I Interstate

Re: Head gasket replacement and more??

Postby crimsonwing » Sat May 28, 2016 11:34 pm

here is that pic of one of the coolant joint pipe screws going in its correct hole.. the red straw shows about where it stops screwing in completely.
Attachments

User avatar
twocams
Posts: 554
Joined: Tue Sep 29, 2015 11:25 am
Location: Grants Pass, Oregon
Motorcycle: 1985 GL1200 Aspencade, 2003 K1200GT BMW, 1969 R69S BMW
Sold : 84 V65 Magna, 82 Moto Guzzi, XS 1100 Yamaha,84 Wing Int., 80 650 Special, Only new bike 82 XV750 Virago (Guam),Honda 250,84 R100RT BMW,87 K100 LT BMW,93 K1100 LT BMW, 91 535 Virago, Honda 50

Re: Head gasket replacement and more??

Postby twocams » Sun May 29, 2016 11:25 am

Not sure what you're asking here? That bolt doesnt look like its screwed in straight. Or is that the camera angle.
Are the threads striped in the housing. Take that red straw and see how far into your hole it goes. Then measure it against the bolt threads. Dont know did that help any?

twocams

crimsonwing
Posts: 85
Joined: Tue Mar 22, 2016 4:05 pm
Location: san diego, CA
Motorcycle: 1984 GL1200I Interstate

Re: Head gasket replacement and more??

Postby crimsonwing » Sun May 29, 2016 12:41 pm

sorry if you out of context. this is from another thread on facts.com, i just got done putting the head gaskets on and this is how far i have come and no im supposed to take the belts back off and head and buy a new gasket and go through all that again?? there has to be an easier way to get those screws back on there properly. i tried that you said it seems they match up so i dont know what the peoblem is.

User avatar
twocams
Posts: 554
Joined: Tue Sep 29, 2015 11:25 am
Location: Grants Pass, Oregon
Motorcycle: 1985 GL1200 Aspencade, 2003 K1200GT BMW, 1969 R69S BMW
Sold : 84 V65 Magna, 82 Moto Guzzi, XS 1100 Yamaha,84 Wing Int., 80 650 Special, Only new bike 82 XV750 Virago (Guam),Honda 250,84 R100RT BMW,87 K100 LT BMW,93 K1100 LT BMW, 91 535 Virago, Honda 50

Re: Head gasket replacement and more??

Postby twocams » Sun May 29, 2016 1:18 pm

Try the other bolt. Try the other bolt in the other side see how far it goes in. It looks cross threaded to me. I would go buy a bottoming tap. Take a good bolt with you and get the right tap. Then carefully screw into the hole....straight.

crimsonwing
Posts: 85
Joined: Tue Mar 22, 2016 4:05 pm
Location: san diego, CA
Motorcycle: 1984 GL1200I Interstate

Re: Head gasket replacement and more??

Postby crimsonwing » Wed Jun 01, 2016 1:23 am

im just taking it to the machine shop for a peace of mind




Return to “GL1200 Information & Questions”




Who is online

Users browsing this forum: No registered users and 7 guests