K11 Owners Group

Sidmariner · Posted: Sun Jul 13, 2008 12:23 pm Post subject: Oil Leak on Timing Chain Cover

I noticed a few drops of oil on the garage floor and discovered oil weeping from the bottom of the timing chain cover of my '93 LT.

I pulled off the lower fairing head and valve covers, which have rubber seals, and then pulled off the cover. It has no gasket or seal; it's just a metal to metal fit, so I cleaned it up and put it back on ensuring the bolts were well tightened (not over-torqued).

It looked good for a day, but this morning there are two little puddles on the floor again.

Is this a sign of something bad, or should I just pull off the cover again, brush on some instant gasket, and put it back on?
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Thunderbird 1: '93 K1100LT
Thunderbird 2: '86 K100RS
Thunderbird 3: '02 R1150RT
Thunderbird 4: '77 R100/7
Thunderbird 5: '86 K75C

duckbubbles · Posted: Sun Jul 13, 2008 1:10 pm Post subject:

It might be easy to thoroughly clean the area and run it or ride it minimally until it shows up to see exactly where it is coming from.

I always put a small dab of sealer into the cam half moon cutouts and on the split line where the cam chain cover and head meet. Make sure the seal around the spark plug area is in the right spot. That ought to fix it up, unless the leak is originating somewhere else.

Frank
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85 K100/1100RS, 321,000 miles, 25 years
96 Ducati 900SS/SP, sold it
05 R1200ST, 35,000 miles, 5 years
400,000 BMW miles

jarnbak · Posted: Sun Jul 13, 2008 1:37 pm Post subject:

A leak from the timing chain cover is normaly coming from the gab between engine blok and cyl.head.Clean and use some 3-bond sealing.Put a litle extra at the two gabs at the end of the cyl.head gasket.

regards Palle.