Z2 750 crank (Bossie the Kaw)

I hate jumping in mid stream but are you going to pull the rest, split the cases and pop the stock 1015cc crank in?
Wish I was closer, I'd stop by and insist we do it.... I bet we'd get it done in a long day-evening.....

Did I understand you are missing a new set of rings for the 1015 bores anyhow or?

By the way, I ran on old 650cc Bonneville for almost a whole summer at around 85psi per cylinder and I didn't even know it or notice there was really anything wrong.... until it started using too much oil.
I rebuilt the top end in the Fall and ran it hard a few weeks later. WHoa...
It felt like +30% horsepower and torque boost.
But amazingly, I was happy with it 24 hours before that rebuild so.... go figure.

And don't be so concerned with ring gaps unless they are really crazy large.... like .040"-.060"!!
Of course if they are large at the top and tight at the bottom, then you have really worn sleeves.
But I have not seen that very much at all with decently maintained Z1-KZ1000 motors.
In a pinch I also put used rings back in my old KZ900LTD and with a quick blast with a ball hone, they all sealed up well with good compression.
Confession:
I owned it for only a few months after that but sold it to good friend who put thousands of miles on it by merely following my casual recommendations to change the oil and filter every 2000-2500 miles.

I'm putting in my 903 crank with my Wiseco 1015 10.25/1 pistons. Last time I bought rings from Z1E they were around $12 a set. Now they are $29 and out of stock. I have one full set but now I may have to reuse the rest of them or all. Wiseco's are different and the ones I've found on eBay won't work. I hope to have this thing done in one weekend. Got the truck running well so I won't be hurried or stranded. Like most I'm on a tight budget and have been collecting the parts I need. A couple more parts and I can dive into this thing. :woohoo:
It'd be nice to have the company, but I'm use to doing things on my own. I appreciate the thought though and it's encouraging Hell, I put in my new tranny two years ago and only had a extra set of hands to pull the motor and put it back in. This time it will be headless so I can manage the block by myself. I'll be installing a gate in the pan so if it takes a little longer it won't matter. I'll even clean up my exhaust too.
No paying projects this month and it will be getting hot soon so now's the time to do it.
Steve

I'll match each piston to the bores. I've got all kinds of rings to work with including a new set. I'm shooting for this next weekend to tear this thing down.
Steve

Found a good place for shims.
Steve

I changed the title. A better one anyway. I've learned a lot about these cranks the hard way. Seems like that's the only way I do sometimes.:blush: Anyway, it's been a fun ride even with low compression. Goes to show how durable and quick these machines can be.:woohoo:
While getting ready for the teardown I picked up some hinges for my oil pan gate. I like this idea the best.

I'm behind schedule a little but hope to start on it Monday or Tuesday. That is unless a paying job comes up. While the engine is out, I plan on putting in some gussets I couldn't get to with it in the frame.
We'll see how it goes.:whistle:
Steve

Got my parts from Z1E. Quick delivery and seemed to come from Florida.
Steve

SWest wrote: seemed to come from Florida.

Steve when Mikes XS bought Z1E it all moved to FLA.

I thought Jeff was still in NY. Oh well, quick service anyway.
Steve

Couldn't find Three Bond for the cases.
Steve

SWest wrote: I changed the title. A better one anyway. I've learned a lot about these cranks the hard way. Seems like that's the only way I do sometimes.:blush: Anyway, it's been a fun ride even with low compression. Goes to show how durable and quick these machines can be.:woohoo:
While getting ready for the teardown I picked up some hinges for my oil pan gate. I like this idea the best.

I'm behind schedule a little but hope to start on it Monday or Tuesday. That is unless a paying job comes up. While the engine is out, I plan on putting in some gussets I couldn't get to with it in the frame.
We'll see how it goes.:whistle:
Steve

Steve
I have to wonder if the gate will open to far as is and not reliable close on hard acceleration :S

Dave

Working on that. If the hinge is turned the other way, it can only open to a little over 90*. With that one a stop could be made to keep it from opening too much.
Steve

It's time.:whistle:
Steve