As some know, and other might have read, i had a breakdown on the Fest at lunchtime. It seems that the number 2 spark plug decided it wanted to leave for pastures new and unwound itself from its threaded hole, but couldn't quite escape as planned and got battered around a bit. I have found the Back-Tap, a tapping tool that you insert, expand and wind outwards instead of inwards, which means the head should not need to come off, and no metal falls into the chamber. Could only order this size from US though, so might be a couple of weeks before i can try it. Will let you know how it goes, in case anyone else finds themselves in similar position https://www.amazon.co.uk/Powerbuilt-640811-Back-Tap-Thread-Repair/dp/B0014FGVVW?th=1
So, it's like a Helicoil that is designed to be used without dismantling.? -Sounds like an excellent idea Craig. I'll (patiently) look forward to hearing how you get on with it.
Not a helicoil StM, its just a re-tap and thread clean, but from inside out, rather than push all the swarf in it pushes it out. Heli coil needs to remove old thread first. Didn’t find anything to do that from inside yet, but will have a google
Ooooo that sounds like a tool that every garage should have for no other reason than it sounds good Sent from my Nokia X20 using Tapatalk
I think this will work well. Likely it's only the first few threads (from the top) that are chewed up so if you can cleanly get into the thread from the bottom you should be able to clean the thread up well enough to run a plug in tight. Failing that....head off! Or risk helicoil and careful cleaning after? With an air line and a bore scope I reckon you could likely do that too with patience Good luck
The AA guy tried that, but it wouldn't start to screw in, just got tight immediately. Luck is more that i have another bike i can use while i wait for it, otherwise, i would be more impatient as well
never seen them before great idea hope it works right think id spin motor over a few times on starter with plug out just in case any swarf gets in
Cannot get the fuel clamp off, so have had to order the tool for that now. Tried everything else i could find that i thought might have worked
Those fuel fittings are horrible. I've had quite a few Daytonas now and they're always troublesome. There's a special tool??? Having done a lot of work on race cars I keep considering some sort of 'dry break' connector on the fuel line.
Managed others previously with fingers, or a screwdriver etc, but just cannot do this one especiallly in the space available. I thought the AA guy had left it disconnected but obviously not :/ ordered one of these https://www.ebay.co.uk/itm/155619391452
Thanks for the special tool tip for the fuel lines,they are a massive pain to get off. Good luck with the reverse tapping mate.
Ok, quick update on my next annoyance the back-tap tool is about 50/60mm too short, so when you put into the hole, it goes too deep to be able to wind the cam out Unless you have twiddy little fingers to reach down there with. can use a plug spanner or long nose socket to tease it out again, as you need them to tap it with anyway, but the knurled ring is too far down to turn by hand. maybe try removing the cam cover next, that might help, as i am sure i can do that in situ? one forward two back :facepalm:
Grrrr,,, I can visualise precisely what you mean Craig... VERY frustrating. Hope you manage to figure a "work around", watching with interest.
What a massive pain in the cajones. I’m a bit of an amateur mechanic myself but with a Haynes manual and a helping hand(getting the engine out) I was able to replace my ruined cylinder head for a good used one without that much head scratching. The only special tool I needed was for the engine positioning thingys(am I getting to technical??) If your not confident you could take the engine out and bring it to a man/woman who knows there stuff. Have to admit the first time I set things up with crank position and valve position I was very nervous when starting for the first time. If I can,then so can you.If you feel inclined of course. Have performed similar operations a few times since and every time is easier and with more and more confidence.
