K11 Owners Group

Moondog · Posted: Thu Jul 24, 2008 9:58 am Post subject: Timing Chain Cover

I made a gasket for the timing chain cover from bulk gasket material. The cover has always leaked and I can't get it to seal properly. I have gotten it close but eventually seep, seep. I have gooped up all the suspect areas and I know it is not leaking from anywhere else.

Has anyone tried making a gasket and had it work?

I don't understand why BMW didn't make a seal for the cover. Gooping it up is so problematic.
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"Badges? We don't need no stinking badges"!

I like the social aspect of riding. Rally's, socializing, drinking beer, fartin' and carrying on. Smile

2004 R1150RS
1996 K1100RS (moved on to new home)

k1100rsr · Posted: Thu Jul 24, 2008 5:30 pm Post subject:

I have never had a leak from the timing cover after any repair on the engine.
Just remove all old silicone, rub the surfaces with a rubbing cloth, and wash with strong detergent.

Smear both surfaces with a heat and oil resistant gasket compound you buy at an auto repair workshop. Ask for the same stuff as they use when repairing transmissions and aluminium engines in new european cars (BMW)
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93 K1100RS TIC-8PSI ï¿½hlins rear,WP springs front, 2,62 final drive, K12RS 5" rear wheel
Toy on four wheels, supercharged -97 BMW 540
http://community.webshots.com/user/k1100rsr

duckbubbles · Posted: Thu Jul 24, 2008 7:55 pm Post subject:

Moondog · Posted: Thu Jul 24, 2008 9:18 pm Post subject:

Its fine that is working for others but it still doesn't make sense not to have a gasket. I guess I am just getting on my soap box about this. To me, gooping something up is just a messy way of doing something when there are better ways of doing it. Unless BMW in their infinite "wisdom" has a good reason? Who knows. I am going to try it this way. Since I have put the engine back together I have had the timing chain off three times. And that has been since April. Trying to put enough on but not too much. I have never had such a problem sealing something up. . I guess I am just trying to design a better mouse trap.
_________________
"Badges? We don't need no stinking badges"!

I like the social aspect of riding. Rally's, socializing, drinking beer, fartin' and carrying on. Smile

2004 R1150RS
1996 K1100RS (moved on to new home)

jarnbak · Posted: Thu Jul 24, 2008 9:32 pm Post subject:

The split between engineblok and the cyl.head is the place were it normaly leak due to lack of sealant in the gap.
Regards Palle.

Jim · Posted: Thu Jul 24, 2008 11:57 pm Post subject: gaskets

MD - are you allowing enough time after applying the gasket material and putting the bike back together for the material to cure properly? Not sure which gasket material you're using - there are a number of them on the market. Depending on the material and what you're sealing, the stuff may need to cure for 24 hours or so.

Gasket stuff is now commonly used in many applications - guess we'll just have to get used to it.

What Palle said, too - make sure you fill the gap.
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Jim
1997 K1100LTSE 94,000 - still has gremlins!
1995 R100RT Classic 16,650 crashed - repaired!
1992 K75RTP 46,000

"We shall not all die, but we shall all be changed."

k1100rsr · Posted: Fri Jul 25, 2008 12:03 pm Post subject:

Moondog, if you want to try something, looking at the timing cover you see a slot where it covers the block and the cylinder head.
Machine a long slot all the way on the cover and fill it with gasket compound.
This is often done on other leaking parts in the auto world.
_________________
93 K1100RS TIC-8PSI ï¿½hlins rear,WP springs front, 2,62 final drive, K12RS 5" rear wheel
Toy on four wheels, supercharged -97 BMW 540
http://community.webshots.com/user/k1100rsr

Moondog · Posted: Sat Jul 26, 2008 8:40 pm Post subject:

Well a twist of a different sort. The seal behind the hall effect sensor is leaking. The oil was dripping out of the HES cover and spreading all over the place. This seal is mounted in the timing chain cover and seals the crankshaft chamber from the HES. I let it run for a half hour today after installing the timing cover and nothing leaked. but when moving it is all over the place. Must be the rise in oil pressure pushing it by the seal. Back to the drawing board.
_________________
"Badges? We don't need no stinking badges"!

I like the social aspect of riding. Rally's, socializing, drinking beer, fartin' and carrying on. Smile

2004 R1150RS
1996 K1100RS (moved on to new home)

k1100rsr · Posted: Sun Jul 27, 2008 3:54 am Post subject:

I do not like the new style of front crankshaft seal, them without pressure spring.
They are a hell to mount whitout special tool, 90% chance to fail.
This is what you get if you order a new BMW seal nowdays, instead find the dimensions and rotation and go to a independent hardware store.
_________________
93 K1100RS TIC-8PSI ï¿½hlins rear,WP springs front, 2,62 final drive, K12RS 5" rear wheel
Toy on four wheels, supercharged -97 BMW 540
http://community.webshots.com/user/k1100rsr

Moondog · Posted: Sun Jul 27, 2008 6:23 am Post subject:

One can buy a seal like that at a hardware store?

I changed it this last winter thinking I was doing a good thing. I had the panel off and had it powder coated so it would have melted anyway. AND I did hear some scuttlebutt about the new seal. I wonder if the old seal can be bought still?
_________________
"Badges? We don't need no stinking badges"!

I like the social aspect of riding. Rally's, socializing, drinking beer, fartin' and carrying on. Smile

2004 R1150RS
1996 K1100RS (moved on to new home)

k1100rsr · Posted: Sun Jul 27, 2008 3:39 pm Post subject:

At a good hardware store that stoc oil seals and bearings. Search the net.

You do not get the old style from BMW anymore, at least not here in Europe.

Ask for a oli seal with the measures: 36 inner, 52 outer and 7 mm deep.
If possible with anti clockvise rotation.
One like this : http://www.afmusa.com/doc_generator.asp?doc_id=979&attr_index_id=8413
_________________
93 K1100RS TIC-8PSI ï¿½hlins rear,WP springs front, 2,62 final drive, K12RS 5" rear wheel
Toy on four wheels, supercharged -97 BMW 540
http://community.webshots.com/user/k1100rsr

Moondog · Posted: Sun Jul 27, 2008 4:10 pm Post subject:

k1100rsr · Posted: Sun Jul 27, 2008 4:43 pm Post subject:

I found the numbers on an old seal, and checked on a blown engine..
Do not push the seal to far in, the shaft gets thinner and you get more oil leak.
If you bought the seal last winter, I bet you have the new style. They are almost impossible to mount perfect whitout a special tool. I know from the hard way.. Sad

_________________
93 K1100RS TIC-8PSI ï¿½hlins rear,WP springs front, 2,62 final drive, K12RS 5" rear wheel
Toy on four wheels, supercharged -97 BMW 540
http://community.webshots.com/user/k1100rsr

Moondog · Posted: Sun Jul 27, 2008 4:55 pm Post subject:

k1100rsr · Posted: Sun Jul 27, 2008 5:20 pm Post subject:

What way are the sealings lip pointing? It can be mounted wrong. The correct way are the writings on the sealing against you, and the lip pointed towards the engine.
This is why it is a hell to mount, it is hard to get the lip to slide on the shaft,and at the same time try to knock it in place without the lip get damaged/wrapped
_________________
93 K1100RS TIC-8PSI ï¿½hlins rear,WP springs front, 2,62 final drive, K12RS 5" rear wheel
Toy on four wheels, supercharged -97 BMW 540
http://community.webshots.com/user/k1100rsr

Moondog · Posted: Sun Jul 27, 2008 5:38 pm Post subject:

k1100rsr · Posted: Sun Jul 27, 2008 5:45 pm Post subject:

Pull out the shit and get you an universal oldfashion sealing with steel spring on the lip. Smile

(Spring on the inside to the engine Wink

)
_________________
93 K1100RS TIC-8PSI ï¿½hlins rear,WP springs front, 2,62 final drive, K12RS 5" rear wheel
Toy on four wheels, supercharged -97 BMW 540
http://community.webshots.com/user/k1100rsr

Moondog · Posted: Sun Jul 27, 2008 5:59 pm Post subject:

Aye, aye captain. as I think of when I installed it there was a 6 month break between removing old and putting in new with a broken leg in between. Guess my memory ain't what it use to be. Thanks for your help. Is everyone taking notes?
_________________
"Badges? We don't need no stinking badges"!

I like the social aspect of riding. Rally's, socializing, drinking beer, fartin' and carrying on. Smile

2004 R1150RS
1996 K1100RS (moved on to new home)

Moondog · Posted: Sat Aug 02, 2008 1:23 pm Post subject:

Well for all of those who are on the edge of your seat waiting to hear what happened.....well I'm not going to tell you..................

I managed to seal the panel up but come to find out, the crankshaft seal for the HES was in backwards. So out it came turned it around and it is holding like a champ. I also used some paper type gasket on the face of the cover which I probably didn't need but I wanted to see how it works. It actually helped with installing the cover. Trying to get the seal over the crankshaft and having the cover all gooped up would have been a terrific mess. If I had gotten my hands in the goop and pulled some off and then put the cover on there might have been a leak...again. Success.. Very Happy

_________________
"Badges? We don't need no stinking badges"!

I like the social aspect of riding. Rally's, socializing, drinking beer, fartin' and carrying on. Smile

2004 R1150RS
1996 K1100RS (moved on to new home)