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Discussion Starter · #1 ·
I'm posting this in a different thread from my electrical issues located here.

My bike has a solid leak when she's running (probably drips onto the ground every 5 seconds). Turned off and no leaks, so that means I'm leaking from either the crankcase/cylinder seam or the cylinder/head seam or both. Mind you, I sourced the jugs from a completely different bike, seeing as my pistons were standing in rusted water when I purchased it. It's a bit of a Frankenstein's monster bike.

I didn't measure to see how much oil I put in. Maybe slightly over two courts. I also bought and installed all brand new gaskets and scraped the mating surfaces clean. Does this sound like I've got warpage somewhere? Will jugs settle in once I run the bike a few hundred miles?
 

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You need to thoroughly clean everything and then identify specifically where the leak is. Sometimes coating the suspect area with baby powder or similar makes it easier to identify the source.
 

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Discussion Starter · #4 ·
This has been a long time coming for this response. I got the bike road ready and wasn't too worried about the leak, but it as since gotten worse. Pictured is the mating surface that is the main contributor to my leaks—oil seeps out of the surfaces between the crankcase and the cylinder jugs. As mentioned previously, the jugs were sourced from another bike. I plan on purchasing a new gasket kit and using plenty of hondabond to ensure a snug fit. Does anyone suspect any other problems? I also used marvel mystery oil in combination with my synthetic oil—is it possible that the oil is "diluted" and therefore leaking out of any small opening?

Auto part Automotive exterior Bumper Gear
 

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There is zero reason for using MMO in the engine, even when it is used it's a temporary addition to try solving a problem. It's never left in the engine since it's too thin.
The oil may contribute to the leak but I don't think it's the cause. Clean everything off and dry it. Throw a handful of baby powder on the suspect leak area and run the engine. The leak will be where there's a wet gooey mess. It looks like the cam chain tunnel is wet in the picture.
Oh, install that missing engine mount bolt.
 
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