Blown motor

No high-pressure cleaning. A tub and a brush soaked in white spirit or lighter fluid, and a little time. Looking at the photos, all the gaskets need replacing. While it's out of the frame, split it in two to inspect. If the bottom end doesn't look too bad, replace the timing chain, the primary chain, and the freewheel rubbers. You could also replace the clutch basket, but finding one in good condition is wishful thinking. Don't be afraid to get started; you just need to be meticulous. Do you have the service manual? It's essential. Nothing insurmountable. We still don't know what the symptoms are.

Picks show oil on barrel fins at #4 cylinder and look to originate from top side.

I don't know why any one would pull a engine to fix a blown head gasket. 

I am no "master" mechanic, but know enough if a engine can be rotated you do a compression test before proceeding with any engine work.

I suspect they will find nothing wrong with the crank or lower end bearings. Most likely the clutch rubbers are shot as that is a know issue, and effects 95% of +40 year old 650/750's.

Larry G wrote:

  I will post some pics and ask  about the damage. I am by means no professional bike mechanic but i really am broke money wise and need to fix this so if you guys and gals know a good european supplier for gaskets germany based please drop a coment. 

Larry I really hope you are going into this with your eyes open as to the cost of a "full motor rebuild" - by "diving in the deep end" rather than diagnosing what is actually going on. To put it in perspective I recently bought the consumables for my motor rebuild including gaskets, chain, guides, rings etc (I did splash out for APE studs) but that was approx $800 without boring etc. You will be surprised how fast it builds up when you start adding parts to your shopping cart !!!!!

wrote:

wrote:

  I will post some pics and ask  about the damage. I am by means no professional bike mechanic but i really am broke money wise and need to fix this so if you guys and gals know a good european supplier for gaskets germany based please drop a coment. 

Larry I really hope you are going into this with your eyes open as to the cost of a "full motor rebuild" - by "diving in the deep end" rather than diagnosing what is actually going on. To put it in perspective I recently bought the consumables for my motor rebuild including gaskets, chain, guides, rings etc (I did splash out for APE studs) but that was approx $800 without boring etc. You will be surprised how fast it builds up when you start adding parts to your shopping cart !!!!!
 

Good observation, I completely missed this part.

Yeah, not a wise idea to do a complete engine rebuild on a vintage motorcycle (or any motorcycle) if your cash strapped. This seems to be a common theme on here, and I have bought more than a couple of project bikes because of similar circumstances.

I know the head gasket needs replacement anyway but the problem is in the lower engine. We are cracking it open next tueday and i will post then .

Larry G wrote:

I know the head gasket needs replacement anyway but the problem is in the lower engine. We are cracking it open next tueday and i will post then .

What where the symptoms ??

I am cash strapped but its still going to be cheaper than a new bike. Looking to see the problem is only costing time. I still have no idea what the problem is but thank you. 

A loud knocking from the lower engine think its a bearing

Larry G wrote:

A loud knocking from the lower engine think its a bearing

I would suggest dropping the oil pan first and see if you can feel "play" in any of the conrods where they attach to the crank - also check if any of the con rod bolts have come loose

Its not the clutch its making the noise in neutral. So... i will keep you guys posted
 

I know this is going to cost abit . I just want to know i am building a soild bike i love the platform really but honestly this season I will hopefully buy a new KZ and put this into long term repair and refurbishment. This was my first motorbike . Honestly cost is Irellevent shit I just spent 400 euros rebuilding the forks before xmas. This is a project of love. But not stupidity

Larry G wrote:

Its not the clutch its making the noise in neutral. So... i will keep you guys posted

 

The clutch and starter clutch cush-drive will make a noise in neutral if worn - if it's the clutch basket the noise will stop when you pull the clutch leaver and load it up