Cracked head, but not what you think

Jhortz said:

From what I can make out from the manual, parts book, and pictures on the internet there looks to be a single gallery sending oil to the head. From the look of it the gallery sits at the rear on the left hand side of the engine and my crack is on the rear at the right so hopefully the crack doesn't go to a gallery. Hopefully someone who has had an engine apart can chime in with a definite answer on this one.

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Oil pressure sender is at back of the block, about in the middle, trying to remember how cams get their oil.

i am going to take a guess
if it starts to leak in the first two minutes then it is probably an oil circuit
if it takes an hour probably not

Give these guys a call. I was actually considering using them when I was thinking of repairing the head. Then fourth gear went, and I just swapped engines.

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https://www.ultraseal-inc.xn--com-9o0a

TURBO200R4 said:

i am going to take a guess
if it starts to leak in the first two minutes then it is probably an oil circuit
if it takes an hour probably not

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1 million percent correct. I've given it a clean and rode it, and ended up with a pool of oil in the corner which is a bit concerning. But I do need to properly clean the whole area and run the bike while watching the crack to see exactly what I am dealing with here.

I've dealt with similar issues in my work hundreds of times before, but I wasn't paying for the repair so the solution looked different . When I say that I mean I was dealing with engines with ready to go rebuilt components so it is completely unnecessary to repair cracks (for example the head would come off, a rebuilt one would be fitted, and the cracked used as a core for the next rebuild), not to mention the cost of lost time in industry which isn't really a problem I face (other than going nuts because I want to ride my bike). I imagine worst case will be head off and send it to a head shop, but the bike also has a questionable transmission which I will be looking at. It might ultimately be better to buy a second hand engine.