So, here we are.....left stud seems ok in terms of location....right one i drilled out - no idea why its so "off".....unless its normal, as i cannot see the remains of the old stud as if i had missed lots of it....strange...it might be normal....but i think as well its widened to the right hand side due to the position i had the drill in.....

OK so i have contacted a local engineering firm and am awaiting a reply - will post some pictures of the current state the 2 snapped studs are in a little later....and hopefully at some point not too far off....the resolution!

I am going to take the head to an engineers shop local to me - ideas are...


1. Get the holes drilled and tapped with a larger diameter if there is enough tolerance to line up with the exhaust clamps, depends on if i made too much of an error....


2. Rotate the clamps 90 degrees and drill 2 new holes for studs i.e. studs move left at the top and right at the bottom, i have seen some posts on the old site where someone did this and it seemed to work fine


3. buy a new head.....depending on the costs of the above, but i know mine has only done 18,000 miles so would like to save it....if possible....


would it be a good idea to do the timing chain whilst i have the head off?

Update, so i had the cylinder head of last night, was not that difficult, just needed some methodical steps...i.e. follow the service manual.....


Biggest thing was the prep, which took me all day - but worth it, had to tap the head with a rubber mallet a few times, was concerned i would not have clearance, but had no issues


I plan to put together a full description of what i have done and update the FIRST post at some point, but for  now i need to asses what to do with the head and if i can save these exhaust studs, i had 2 to remove, one i did a good job with, the second as you will see when i post i drilled off center....so might just need to get a new head, OR i have seen someone rotate the clamp and drill into the opposite parts of the head...


one thing is for sure, putting it back together will be fun - have to make sure i get nothing wrong, do not fancy having to deal with broken valves/pistons....sure i shall have some more threads relating to any issues i encounter, or should i keep it all in here?

OK so - ignoring advice, the reason i wanted to try and get the studs out was that i intend to order a new set of down pipes, and did not fancy having to drill their clamps out - in hind sight it might have been easier.....but its always 20/20


regards getting the extension bar - good idea, but i already have the head off now....and its a lot easier with it on a bench then lying on the floor in a cramped space


 i have much less experience than most on here, only had the bike about 3 months.....had no idea how an engine really worked until i started learning a few months back, so for me i am pleased i have taken it off and am making progress 

thanks Paulfzs...


So its going ok, i have worked up to 5m diameter and 10mm depth...


I have stopped as i need to know


1. How deep do i go, i have no orignal studs to compare to
2. What diameter do i drill to, so i can then tap


I know the tap pitch i use depends on the rods i have, they are M6 from Screwfix but i need to measure the pitch etc


Thanks for your help ( all...)





 

OK so managed to wangle my way in with without the wheel having to come off, no luck with the stud extractor


SO im stuck now - either i mess around drilling it out and then tap it ( i have never done that, and have no kit i.w. tap and die )


Or i take the head off and take it to a shop to get sorted ( never taken the head off either but i can see disconnecting things might be easier than working on the bike as it is - on its center stand


Any other ideas or advice

yep i thought of that once i posted - so thats my next job ....what a nightmare!

What about using these, similar items mentioned earlier in the thread...


http://www.screwfix.com/p/joint-connector-nuts-m6-x-17mm-pack-of-50/83521


Still need to drill the clamps...


In your pictures, you seem to have a screw on stud extender....is that what they are called?

OK found them.....sleeve nuts.....


They look ok, do you need to drill the clamp holes?

YES

thanks all for the input - going to try the locked nuts method first, shall update soon...