Coolant leak


Information and questions on GL1200 Goldwings (1984-1987)
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5str48
Posts: 24
Joined: Thu Aug 07, 2014 2:13 am
Location: Reno, NV 89512
Motorcycle: 1986 GL1200A Aspencade

Coolant leak

Post by 5str48 »



Recently replaced the head on 85 gl1200, but re-used head gasket which had been torqued down but not subject to the engine having been run.(Still looked new) Coolant is now running down exhaust port even when engine is off. I'm guessing that re-using the head gasket was my mistake. Engine was started and run briefly. Thoughts?



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Maz
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Location: Kent, UK
Motorcycle: 1975 GL1000K1
1976 CB500T
1979 CB750L
1990 Yamaha FJ1200
1993 Suzuki GS500E

Re: Coolant leak

Post by Maz »

Head gaskets should never be re-used. It will have lost its ability to compress and seal the joint.
Maz
Ironically, Common Sense is the LEAST common of all senses!

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roadwanderer2
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Joined: Thu Aug 08, 2013 4:03 am
Location: Tucson Arizona
Motorcycle: previously owned 83 GL1100A aspencade traded for a motorhome, 1981 honda GL500i silverwing interstate, 1974 yamaha xs400, 1974 Honda cb450 twin cam, 1983 honda vt30, 1982 honda 700 shadow, 1972 cb750four, and my first bike, a brand new 1982 honda CM400e. now own-1986 GL1200 aspencade SEi
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Re: Coolant leak

Post by roadwanderer2 »

Head Gaskets are a necessary replacement item whenever you remove an engine head be it on a car, truck, motorcycle or any other gas or diesel powered engine. If you want to make sure you got it fixed, DO BOTH SIDES, and torque the heads down per your repair manual. You'll save yourself a lot of headaches in the long run.

Stuart, a.k.a.roadwanderer2.

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CrystalPistol
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Location: Shenandoah Valley of Virginia
Motorcycle: 1997 GL1500SE/'98 Lehman Trike

Re: Coolant leak

Post by CrystalPistol »

No matter now, that head will have to come off again. Time to put in a NEW unused head gasket this time. Look close, make sure no signs of a crack or surface gouges.

I have a habit I acquired since replacing head gaskets on my '69 340 Swinger, it had 4 cylinders that had 4 head bolts while the other 4 had 5 head bolts. After a second occurrence, parts man at local Mopar shop told me to spray new ones with a couple coats Rubber-Seal High Heat Aluminum spray paint & let dry, then apply & torque. I still do it that way near 50 years later, but now it's often Krylon or RustOleum brand. Never had another one fail. I've used it on steel shim, composition, and copper sheet head gaskets. After install, one heat cycle, it's done.
Make Courtesy your "Code of the Road" …

… & Have a Safe Trip!
:)

5str48
Posts: 24
Joined: Thu Aug 07, 2014 2:13 am
Location: Reno, NV 89512
Motorcycle: 1986 GL1200A Aspencade

Re: Coolant leak

Post by 5str48 »

CrystalPistol wrote:
Wed Oct 30, 2019 12:10 pm
No matter now, that head will have to come off again. Time to put in a NEW unused head gasket this time. Look close, make sure no signs of a crack or surface gouges.

I have a habit I acquired since replacing head gaskets on my '69 340 Swinger, it had 4 cylinders that had 4 head bolts while the other 4 had 5 head bolts. After a second occurrence, parts man at local Mopar shop told me to spray new ones with a couple coats Rubber-Seal High Heat Aluminum spray paint & let dry, then apply & torque. I still do it that way near 50 years later, but now it's often Krylon or RustOleum brand. Never had another one fail. I've used it on steel shim, composition, and copper sheet head gaskets. After install, one heat cycle, it's done.
Never heard of this. Manual says not to use any foreign matter on new head gasket. Are you absolutely sure of this? Can you name a specific current brand you use?

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CrystalPistol
Posts: 1396
Joined: Wed Mar 10, 2010 9:07 pm
Location: Shenandoah Valley of Virginia
Motorcycle: 1997 GL1500SE/'98 Lehman Trike

Re: Coolant leak

Post by CrystalPistol »

5str48 wrote:
Wed Oct 30, 2019 2:39 pm

Never heard of this. Manual says not to use any foreign matter on new head gasket. Are you absolutely sure of this? Can you name a specific current brand you use?
I know.

YES,

I've used it on my Norton Commando, my Triumph Tridents, my 454 Chevelle, my '69 Dart Swinger 340, my '65 GTO, my Wheel Horse, my '77 F150, and others over the years since early '70s. As long as it's a HIGH HEAT ALUMINUM ENGINE PAINT, it'll have a lot of powdered aluminum in it for color & body. Not simply silver, black, red, blue, gold … just ALUMINUM. My first uses were Rubber Seal, but since then, I've used Krylon, RustOleum, even Tractor Supply. I've used this method on every head gasket R&R since. That first use was after blowing head gaskets on that high compression '69 340, it always blew on the top side of one of the 4 cylinders that only have 4 head bolts around them.

You do what you want as I make no warranty, but I'll always use it.

Google "aluminum paint on head gaskets".


Make Courtesy your "Code of the Road" …

… & Have a Safe Trip!
:)

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