In this video I check the valves by doing a fluid test in the head , I also do a test with some JB weld putty in a 6mm thread, it is very strong and did not strip the thread, most impressive. Thump nail is "My late mum on the Z1"
I reviewed the previous 2 videos and saw what happened, you look to still have some threads remaining in half the hole, and it's just a case cover bolt, as long as it passes torque you should be good, max oil psi I get on my tired z1000 when it's cold is 90 psi, then it settles down to 30, and that looked (cursory look)like a section without oil. I wouldn't worry about using your solution at all, if you want to be sure, fill it with jb weld, dress it drill it insert a heli-coil and call it a day. I'm sure someone will disagree or call me out as most kz comments I make end up going south, but you're on the right track.
Hi Andrew , I am going to keep your good idea in mind, as I say in the last video , mainly for an insurance , if the JB job strips , I can then open it out for a 6 mm helicoil, good idea though, Cheers Gary
@@garyspracticalworkshop357 supposedly helicoil doubles the thread grip surface making the hole and fastener a magnitude stronger. I found the problem hole on my 77 kz1000 and I bet the jb will hold just fine, hope it all works out. By the way, why was your welder going to have you have to strip it bare to weld up a new boss? I can only assume to get it clean enough to tig?
Hey Gary, just watched your video, and am really happy to see anything with a Z. I have some experience with the grey epoxy you're using to remake your hole, you should take a torque wrench and see if the bolt will take the torque required to fasten something to whatever hole is stripped (even just a stack of washers if you want to use the same bolt you filmed). If it passes, increase it by a few increments and retorque till failure. The pull test won't put the same stress on the threads that torque will. Just going out on a limb here as Ive been there before and had it fail. Also, again I don't know what bolt or insert failed, but if it's one of the exhaust manifold bolts, the heat cycles will cook most of the commonly available epoxies. A Heli-coil kit (or knock off) is the best as it's easy and relatively cheap and you can do it in your garage. Again, awesome work and please disregard if you're an ex machinist or something and I'm stepping on your toes. Awesome video!
Hi Andrew Yes, that is a good idea about using a helicoil, there will be another video soon showing the work with the JB weld, I did use it on the hole in question, the hole is on the casing just behind the starter motor , it has about 5 inch long bolt that hold the chain gard on to the casing, you will see all this in the next video . Thanks for help - Cheers Gary
