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1Back to top Go down   Installing Valve Cover Gasket Empty Installing Valve Cover Gasket Mon May 03, 2021 12:36 am

jnclem

jnclem
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I have an '89 K100rs with 30k miles on it. I adjusted the valves a couple of weeks ago and reused the old valve cover gasket. It seemed plenty flexible. The problem I had was simply trying to keep the gasket in place on the cover to install it. 

I have the black powder coated engine and the channel that the gasket sits in is VERY slippery. I cleaned all the oil from the cover, the gasket, and the head, but it seemed impossible to keep that gasket in place while installing the cover. The gasket seems to be a bit too small to sit in the cover groove, so it constantly slips out of place. I fought with it for a very long time, but finally got it in place.

I used a little RTV on the two seams at the timing cover, and on the half-moon pieces, but none anywhere else. I think all of the messing around with it removed too much RTV. I thought it was not leaking after a short ride, but a 200 mile ride showed a slight leak from the top seam at the timing cover joint.

I ordered a new gasket. My question is, are there any tricks to getting that gasket to stay in place while you install the cover? I have been told that the non-powder coated engines are easier.

Any thoughts?

    

2Back to top Go down   Installing Valve Cover Gasket Empty Re: Installing Valve Cover Gasket Mon May 03, 2021 4:50 am

Dai

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Dobs of grease to hold the gasket in the cover, then rotate it onto the engine from the bottom of the cylinder head like you're closing a book.


__________________________________________________
1983 K100 upgraded to K100RS spec, 1987 K100RT
Others...
1978 Moto Guzzi 850-T3, 1979 Moto Guzzi 850-T3 California,1993 Moto Guzzi 1100ie California
2020 Royal Enfield Bullet 500
    

3Back to top Go down   Installing Valve Cover Gasket Empty Valve cover gaskets Mon May 03, 2021 8:18 am

daveyson

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Since it's still plenty flexible you should be able to give it a gentle stretch too. Maybe in the sun a bit too while it's off.


__________________________________________________
11/1985 bmw k100rt (late model)  Vin. 0090567
 ~120,000 km
    

4Back to top Go down   Installing Valve Cover Gasket Empty Re: Installing Valve Cover Gasket Mon May 03, 2021 8:24 am

jnclem

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@Dai wrote:Dobs of grease to hold the gasket in the cover, then rotate it onto the engine from the bottom of the cylinder head like you're closing a book.
That’s the usual solution, but it didn’t work on that Teflon cover. That powder coat really changes things.

    

5Back to top Go down   Installing Valve Cover Gasket Empty Re: Installing Valve Cover Gasket Mon May 03, 2021 8:26 am

jnclem

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@daveyson wrote:Since it's still plenty flexible you should be able to give it a gentle stretch too. Maybe in the sun a bit too while it's off.
I did try stretching, but it didn’t hold. That’s why I’m going to try a new gasket. Maybe it’s not as flexible as it seemed. It just wasn’t hard like they get with more miles.

I understand that the new ones come a little small and need to be stretched. Warming it up is a good idea. I’ll do that this time.

    

6Back to top Go down   Installing Valve Cover Gasket Empty Re: Installing Valve Cover Gasket Mon May 03, 2021 8:30 am

jnclem

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I had watched one YT video where the guy was using 3 bond to glue the gasket into the cover, but that should not be necessary. I haven’t seen anyplace else where anyone was doing that.

    

7Back to top Go down   Installing Valve Cover Gasket Empty Re: Installing Valve Cover Gasket Mon May 03, 2021 10:04 am

Laitch

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Did you have the inside surface of the valve cover powder-coated?


__________________________________________________
1995 K75 81,000 miles
Installing Valve Cover Gasket Usa-lo10
    

8Back to top Go down   Installing Valve Cover Gasket Empty Re: Installing Valve Cover Gasket Mon May 03, 2021 2:12 pm

jnclem

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@Laitch wrote:Did you have the inside surface of the valve cover powder-coated?
I didn’t, it’s factory. Maybe powder coat is the wrong term, but the black engines as compared  to the silver one are extremely slick. I know a guy that’s been at this for 50 years that gripes about it. I just thought maybe someone here had found a trick.

    

9Back to top Go down   Installing Valve Cover Gasket Empty Re: Installing Valve Cover Gasket Mon May 03, 2021 2:33 pm

Laitch

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@jnclem wrote:I know a guy that’s been at this for 50 years that gripes about it.
If I'd been trying to install a valve cover for 50 years without success, I'd gripe, too; in fact, I would have started griping at the 20-year mark.


__________________________________________________
1995 K75 81,000 miles
Installing Valve Cover Gasket Usa-lo10
    

10Back to top Go down   Installing Valve Cover Gasket Empty Re: Installing Valve Cover Gasket Mon May 03, 2021 3:02 pm

Two Wheels Better

Two Wheels Better
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@jnclem wrote:I had watched one YT video where the guy was using 3 bond to glue the gasket into the cover, but that should not be necessary. I haven’t seen anyplace else where anyone was doing that.
It should not be a secret that many factory techs use Drei Bond on the rubber gaskets around the half moons and in the corners, on old & new K bikes. A comeback costs the mechanic.


__________________________________________________

1970 R60/5, OZ '77 R75/7-R100, '85 K100'87 K75C, OZ '87 K100RS, '93 K11-K12 Big Block, '93 K1100RS, '95 R100-Mystic, '96 K1100RS, '98 K1200RS, '00 K1200RS, '02 K1200RS, '03 K1200GT, '04 R1150R'04 R1150RT, '05 K1200S, '06 K1200R, '07 K1200R, '09 K1300GT & 2013 R1200RT-Polizei  - Beemers owned still or sold.

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11Back to top Go down   Installing Valve Cover Gasket Empty Re: Installing Valve Cover Gasket Mon May 03, 2021 8:31 pm

jnclem

jnclem
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@Laitch wrote:
@jnclem wrote:I know a guy that’s been at this for 50 years that gripes about it.
If I'd been trying to install a valve cover for 50 years without success, I'd gripe, too; in fact, I would have started griping at the 20-year mark.
He’s stubborn if he’s anything. Very Happy

    

12Back to top Go down   Installing Valve Cover Gasket Empty Re: Installing Valve Cover Gasket Mon May 03, 2021 9:39 pm

Laitch

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@jnclem wrote:He’s stubborn if he’s anything. Very Happy
That's the trick you're seeking.  cheers


__________________________________________________
1995 K75 81,000 miles
Installing Valve Cover Gasket Usa-lo10
    

13Back to top Go down   Installing Valve Cover Gasket Empty Re: Installing Valve Cover Gasket Tue May 04, 2021 7:05 am

Gaz

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I fitted a new gasket in the valve cover of my K75 a couple of months ago and initially it was a nightmare trying to stretch it into the groove and keep it there while attempting to fit the cover. After several attempts over several hours due to the time taken to clean sealant between each attempt a phone call to Smithy confirmed that he also had the experience of a gasket needing to be stretched a little to fit.

The answer is to get hold of a piece of glass slightly larger than the cover, thoroughly clean the groove and sparingly apply a thin bead of sealant around the groove, fit the gasket into the groove at one end and feed the gasket into the groove as you slide the cover (gasket down) onto the glass. Once I had the cover completely on the glass sheet I carefully moved it around a bit while holding downward pressure to get the gasket to sit evenly in the cover. I loaded the cover with a house brick and left it for 3 days. With the gasket set in place with the sealant just fit it to the engine and bolt up.

Hope you don't need to ride the bike in a hurry.

Cheers


__________________________________________________
Gaz
1990 K75 6427509; 1987 R80G/S PD 6292136; 2010 G650GS ZW13381; 95 K1100LT 0232224
    

14Back to top Go down   Installing Valve Cover Gasket Empty Re: Installing Valve Cover Gasket Tue May 04, 2021 10:01 am

jnclem

jnclem
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@Gaz wrote:I fitted a new gasket in the valve cover of my K75 a couple of months ago and initially it was a nightmare trying to stretch it into the groove and keep it there while attempting to fit the cover. After several attempts over several hours due to the time taken to clean sealant between each attempt a phone call to Smithy confirmed that he also had the experience of a gasket needing to be stretched a little to fit.

The answer is to get hold of a piece of glass slightly larger than the cover, thoroughly clean the groove and sparingly apply a thin bead of sealant around the groove, fit the gasket into the groove at one end and feed the gasket into the groove as you slide the cover (gasket down) onto the glass. Once I had the cover completely on the glass sheet I carefully moved it around a bit while holding downward pressure to get the gasket to sit evenly in the cover. I loaded the cover with a house brick and left it for 3 days. With the gasket set in place with the sealant just fit it to the engine and bolt up.

Hope you don't need to ride the bike in a hurry.

Cheers
Wow. Now there’s a solution. 😂😂  And the next time you check the valves, it will likely remain glued to the cover so you don’t have to do that a second time. I’m sure glad BMW didn’t just make a gasket that actually fits their cover. I mean, what is the advantage of making the gasket too small for the cover? 

I knew about this issue before I took it off, but since I was refitting the used gasket, or so I thought, I thought it would have stretched out in use and would fit back into the cover. Not so much. It tenaciously shrank back to its original too small size.

It probably took me close to an hour to get it back together the first time. It think that in doing so, I messed up the sealant at the case seams and that’s what is now seeping. It’s not a terrible leak, but I know I won’t be able to leave it like that. I want it right.

Thanks for all the input.

    

15Back to top Go down   Installing Valve Cover Gasket Empty Valve cover gasket Tue May 04, 2021 4:27 pm

daveyson

daveyson
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Maybe smear some clear sealant on the outside, might do the job until you next check the valves, yeah it's the lazy way. 

Another thought, if your not already doing this, leave the gasket in the rocker cover, while your doing the valves, so it doesn't have so much time to shrink.


__________________________________________________
11/1985 bmw k100rt (late model)  Vin. 0090567
 ~120,000 km
    

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