Gasket substitute?


Information and questions on GL1500 Goldwings (1988-2000)
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Corkster52
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Gasket substitute?

Post by Corkster52 »



Due to scheduling circumstances, I can only get to replacing my timing belts next week and the 2 gaskets that I ordered for the covers are delayed in shipment. Has anyone had success with using a product like Formagasket or anything else that won't end up gluing the parts together so I will damage the covers when I try to take them off again? :?:



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virgilmobile
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Re: Gasket substitute?

Post by virgilmobile »

No.
Remember those rubber gaskets are used only to keep water and dirt out of that area.

If you have absolutely no choice,I'd run a bead of silicone (cleaning the cover) just about the same size as the original gasket and let it cure overnight.That way it sticks to the covers only.
You want to try to make a simulated gasket out of silicone.
Never use silicone to replace or seal a gasket on the engine parts like the water pump housing or valve covers...BAD things happen.
Seen a engine destroyed by silicone on a valve cover..Plugged up the oil passages.

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Corkster52
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Re: Gasket substitute?

Post by Corkster52 »

run a bead of silicone (cleaning the cover) just about the same size as the original gasket and let it cure overnight
I forgot to mention, but we are doing the work from my buddy's hydraulic lift and I'd rather not keep his garage tied up overnight (unless I absolutely have no other choice).

I wondering if some 1/4" adhesive-backed weather-stripping (like is used on windows and filling drafty gaps around them) might work?

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Re: Gasket substitute?

Post by virgilmobile »

Sure as long as your absolutely positive that it will stay in place and not get loose and wrapped around the moving parts.
Truthfully if it's a short delay and you need it done just do without any gasket for a short time.Just be aware of it's function.Dirty wet roads will sling that stuff onto the covers and it will migrate in around the belts.
If you dont mind the cleanup afterwards,use a strip of gorilla tape over the gaps.Short term.

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Re: Gasket substitute?

Post by MikeB »

What gaskets are you talking about? It's been a while so I don't remember needing any gaskets to do a timing belt change on my '98 GL1500.
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Re: Gasket substitute?

Post by Corkster52 »

It's a 2 piece gasket that is in between the front and back covers.

GASKET, L. FR. COVER
11524-MN5-000

GASKET, R. FR. COVER
11514-MN5-000

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Re: Gasket substitute?

Post by MikeB »

I did not have to replace those. They were in good shape. I just cleaned them and reinstalled them with a little bit of weather stip cement in a couple of places. That was to keep them in place as I reinstalled the covers.

They are more like the rubber seal (83515-MN5-300) that goes around the chrome engine side cover on the bike than they are a sealing type of gasket.

At 200,000 miles I may replace them. It is kind of a hot dirty environment down there.
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Re: Gasket substitute?

Post by Mh434 »

They're not gaskets, just "gravel excluders", essentially. If they're in even vaguely reasonable condition, just re-use them. You could probably omit them entirely without issue, although I wouldn't recommend it. Even if they're breaking up, just use a little silicone sealant in the BOTTOM of the channels to "glue" the pieces back into the timing belt covers. That would be a "permanent" fix.

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SG_Jay
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Re: Gasket substitute?

Post by SG_Jay »

I re-used mine without issue as well.

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Re: Gasket substitute?

Post by froche »

And though I agree with trying to not use silicone as a gasket, I work om antique tractors and sometimes there are no gaskets available. Some we can cut out of gasket paper with a ball peen hammer others we can't and we use Permetex Gasket Silicone. There is a nice selector available at https://441py33rout1ptjxn2lupv31-wpengi ... lector.pdf

i have seen silicone inside an engine but when used PROPERLY it is fine. Some gaskets have to have the gaskets from manufacturer as we know regarding the water pump and the gear indicator.

if you use silicone always put the parts together and tighten until thy have begun to squeeze silicone, then wait 10 to 30 minutes (depends on how thick / wide the surface is) then torque down.

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Re: Gasket substitute?

Post by bigsteveswing »

I also reused mine when I did the job last year.
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Re: Gasket substitute?

Post by CrystalPistol »

I reused them too when I done mine.
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Re: Gasket substitute?

Post by oldmopars »

I was in the Air Force for 14 years, and spent most of that time working on heavy airlift aircraft(C141B,C17A). We did not have gaskets for everything, so we would use a RTV type gasket on one side and then apply petroleum jelly to the other. Then we set it in place lightly to cure. Then came back the next day, pull the part off, clean the area and put it back and tighten it up.
We did this for all the windows and it worked great. I have used this same idea on other applications and it works well. The jelly keeps it from attaching things together like glue, and it still provides a great seal that can easily be taken off and put back on.
However as others have said, I just reused the old gasket and had no issue, it is just to keep water and dirt out.

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Re: Gasket substitute?

Post by DenverWinger »

About 15 yrs ago I bought an old jeep to resurrect. It ran but needed much work.

Fast-forward a few weeks and It's running good enough I decided to take it on the highway about 40 miles to visit a friend. About halfway there I have this cloud of steam coming out from under the hood, and temp gauge climbing rapidly! There was an exit with a Home Depot just ahead so I steamed my way just into the parking lot and shut 'er down to cool. Wandered around the store for a while. Garden Center said I could use their water hose.

I opened the hood and looked around, didn't see any obvious blown hoses or leak points, so drove it up to the garden center to put water in it. Water was running out of the water pump almost as fast as hose was putting it into the radiator. Needless to say I towed it home.

On pulling the water pump I found NO GASKET AT ALL. Somebody had put it together with some sort of silicone, and it obviously did not hold! Hard to say how long it had been that way though. New gasket fixed it nice.

So clearly there are good applications for silicone, but this was not one of them!
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Re: Gasket substitute?

Post by Mh434 »

To be fair, some of the new technology silicone gasket materials are truly amazing. For example, my Ford Zetec engine uses no gasket at all for the oil pan, just one of the specialized silicone gasket makers. It will hold up to 100 psi of very hot oil, under changing engine temperatures, for the life of the engine. It is a right b***ch to get off, though!! I had to remove the pan so I could modify the oil pickup tube, and it took me a solid 4 hours' labor to separate the two, using a paper thin stainless scraper & a ball pein hammer to drive into the silicone all the way around the seal. Most people bend the steel oil pan during this evolution, as the glue is stronger than the pan.

That's why I would recommend against using a silicone gasket maker for the 'Wing's timing cover belts. Chances are, they'd be completely destroyed when you tried to remove them next time....

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Re: Gasket substitute?

Post by Corkster52 »

froche wrote:
Thu Jun 27, 2019 7:35 pm

if you use silicone always put the parts together and tighten until thy have begun to squeeze silicone, then wait 10 to 30 minutes (depends on how thick / wide the surface is) then torque down.
This is some great makes sense advise on how to use RTV, even if I don't use it this particular application. Thanks!

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Re: Gasket substitute?

Post by Corkster52 »

As it turns out, when we replaced the timing belts 2 days ago, the gaskets were in relatively good shape (even though the longer one had some amount cracking on the outward edge).



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