TOPIC:

To what length should the new ZX11 tensioner spring be shortened to? I went through the FAQ section and found cam tensioner references but I must be missing the full writeup on the swap??

I just bought my 1980 KZ1300 and that is my 1st order of Business.

The amount usually mentioned is 10mm reduction.
You might want to consider the alternatives of either modifying the original cam chain tensioner to stop it backing out, or fitting a manual tensioner. I know some folks have their concerns about just hacking off a length of the ZX11 spring.
Best wishes.

I'm not seeing anything on how to modify my existing tensioner in FAQ. I would prefer something that adjusts automatically, plus my tensioner is new. Is there a link I can use. It might be because I'm using my smartphone and I need to use the desktop version?

www.kz1300.com/index.php/forum/engines/1...nsioner?start=6#6524


www.kz1300.com/index.php/forum/engines/1...nsioner?limitstart=0

Maybe these links will help. Or you can do a search in the forum for Cam Chain tensioner , ZX11 CCT etc...

Personally, I'm going to modify my existing original tensioner, as Lauri's illustration shows in one of the above links. However, a lot of owners have fitted the ZX11 tensioner with good results. But bear in mind that you need to check for wear in the cam chain idler gears / rollers, and a possible way to do that is by counting the number of tensioner "clicks" as described in the FAQ section on ZX11 cam chain tensioners.

Hope you can find the answers you need.

In my opinion, the best thing to do is get a stock tensioner (which you KNOW is the correct tension), then eliminate the only uncertainty about it (accidentally backing out) by drilling and tapping the backside, then running a bolt and locknut into it.

Basically, back the bolt out, set the tensioner per manual, turn the motor over a few times so you know you're good, run the bolt in by hand until it's JUST touching the tensioner plunger, then lock it down with the locknut. Re-check every time you change the oil, and you're good. Probably the easiest, AND most accurate way to get the proper cam tension.

Thank you!