exhaust nuts rusted to nubbs

"Never give up, never surrender"

 

this all sound too familliar!
and again - well done rob. That is obscene. i dunno how you managed......

 

thanks man, i noticed in the workshop manual, that replacing these nuts is meant to be part of the anual service.. a warning for us all i guess..

 

I'd replace them with brass M6 threaded nuts. They won't rust and they will always come off.

 

yep, they are in fact M7, but yes, ive ordered brass flange nuts.. they should be " the nuts"

 

i just saw this thread, have the same problem with scoots at work all the time, the quickest is to just grind them off and drill and tap them, sometimes you can hammer a socket on and wiggle them off. im guessing your bike is a leader engine? i remember my runner had m7 nuts, i tried using m8, but they hit on the downpipe weld and you need to have a spacer!

 

yes mate a leader engine, thing is, there was no way to get a grinder in there, barely space for a spanner lol..

 

yeah we have some pretty awesome tools at work for stuff like that, i always forget that other people dont have them

 

great job getting it sorted.
I usually try the following but not necessarily in this order...

see if the stud will turn out of the head with the remains of the nut in situ and then deal with nut afterwards
give it some heat,
soak with plus gas,
grind the sides off the nut with a dremmel to ease pressure on studs threads
nut splitter if theres room
or try a twist socket like this or see if a smaller size socket will hammer on the remains


If all this fails then burn it off with the cutting torch