1985 XJ750XN bolt specs.

I need to know the torque specs on the top end of my motor. Does anyone know the setting for those 10mm bolts that hold the cams in place? Other head bolt info welcomed as well. Thanks.

 

Hope these are not too big if you don't have hi-speed, but figure you would be able to see them better at this size.
As you can see these are scans taken right out of the factory service manual.

 

Almost forgot, head bolt values and tightening sequence.

 

Thankyou for this information. I ordered my parts and will be assembling the bike in the next few months....no rush here, lots of snow and -20 right now.....

 

I have ordered my parts. Could you give me one more piece of information? I'd like to know the possitioning of the piston rings. Thanks.

 

Hey Forgiven
I've been through the manual a couple of times and I can't find any info in there regarding the ring orientation.
The only thing I can think of and not 100% positive is that the gaps on the rings should be 90 degrees from each other when on the piston.
For instance, one ring has the gap at 12 o'clock, then the next ring gap should be at either 3 or 9 o'clock. Neither gap should be in line with intake or exhaust opening.
The only *NOTE* in the manual refers to the correct position of the piston when putting it back together. There should be a couple of letters "EX", make sure they are facing towards the front of the engine.
Here's a pic: (sorry the pic is so big, but I tried a smaller image and it was hard to read)

Hope this helps and if someone else knows more about the end gap position, then feel free to jump in.

 

The end gap positions are right there on the page its step 4, goes with the diagram next to the black square with the 3 in it

 

Thank you for taking the time to do this, it is much appreciated.

 

Ummm, I guess I've been partaking of the grape too much, I didn't even notice it waldo.

Note to self, work on motorcycles in a state of total sobriety! :roll:
:twisted: :twisted: :twisted:

Glad to have been of help, with a nod to waldo for the assist!

 

Maxim-X No need for the I couldnt even begin to count the number of times I have looked right through what I have been searching for. As for total sobriety if you were to go back and read some of my posts I would bet you might be able to detect I too partake a touch now and then :wink:

 

Would rather have a bottle in font of me.....Than a frontal lobotomy!!

 

Sometimes it's easy after a few drinks to leave things unfin

 

Ok, for any who may be following this thread I have started a new one telling of the process I went through with main emphasis on setting the valves. Thanks again Maxim-x for your very helpful information.

 

Well the rings are almost broken in, the bike runs quite well. Some minor carb. issues upon warming up. Other than that I am so glad I decided to revive my bike. Now if only summer would really arrive here.....I threw together a short video of some of the rebuild process. And how the bike looks today.

http://www.youtube.com/watch?v=UWgUlZPRGug

 

Here I am back 2 years later.....did the whole procedure again, this time redid the head completely, valves ground, new springs, etc. This time it will not fire. I do have spark, fuel, compression. I can only think of one thing that I may have gotten wrong. When cleaning the carbon from the pistons I may have gotten the #1 cyl. off by one rotation....that could make the sparkplug fire on the exhaust stroke on all cylinders. So I have tried switching the 2 input leads to the coils, that did not work. I put them back then tried swaping spark plug leads....I tried switching from 1-2-3-4 to 2-1-4-3...no luck with that either. Any of you have suggestions on how to get the ignition timing to work without taking the whole thing apart and setting the cams again? It seems to me that I should be able to swap leads and get it to run. Do any of you know the firing order on the Maxim X? I was thinking it may be 1&3, 2&4 at the same time, but now I am unsure...Thanks to any who know this stuff.