Topic: CB750 K0 Leak after rebuild - ***Solved! I think***

[Simpson]

So I just got my top end put together.
Without starting the engine, just turning the engine over getting oil back into the system I have this oil leak.

The only possible scenario I can think of is a problem with the puck seals.

Does that sound right?

[Simpson]

So finally I got the motivation to pull the engine out yesterday. Turns out the bolts that go though the center pucks under the cam towers were a shade under torque. The other end of the hole dumps into the cylinder center air cooling passage. I simply tightened them up and reassembled. So far no leak.

[Simpson]

Well, still no leak and I'm dancing! 

[andy750]

Well done! Its a great feeling when you think you have eliminated all the leaks  -I hope it lasts for you!

[Simpson]

Well done! Its a great feeling when you think you have eliminated all the leaks  -I hope it lasts for you!

I've been so excited, been furiously cleaning the engine since. Now that the oil residue is not attracting dirt it looks darn sparkly. Wife says I'm obsessing. i say sfter being haunted with leaks for a few years now, it's a well deserved choir I enjoy.

[andy750]

I can relate to that. I dream of a leak free bike!

[MRieck]

I can relate to that. I dream of a leak free bike!

Me too.

[Simpson]

I can relate to that. I dream of a leak free bike!

Me too.

BTW Mike, this head went to you last year after a port and valve job. Just like to report all is good!