i threaded one of the bolts for the idler in my 94 wrx i put in a bit of 12 mm threded bar with a load of loctite and reduced the other end to ten mm to get the idker over it and put two locjnuts on it i know its dodgy but would it last and woul a 'helix' do (i think its called that)

 

Difficult to say if it will be ok. It all depends on how well you did it.

Its a bit iffy though to say the least. On something as critical, i would not even use a helicoil. A time-sert would be much safer and more secure. I have used these for repairing cylinder head stud holes in bike engines and an M10 will take 50 N/m no problem.

 

well it says in the work shop manual to torque it 30lbs i think and i did it to that whats a 'time-sert'

 

which idler? The bottom one doesn't have much load and ought to be fine. Given then you've already gone to M12 you don't have many options in terms of thread repair. Both Helicoils and Time-serts are a sort of thread repair systems. They both involve drilling out the original thread, tapping a new slightly larger thread, in the case of the helicoil, threading in a spring type insert, while the Time Sert uses a solid insert with both external and internal threads.

 

its the top left one can i repair it anyway

 

If you've already put the m12 thread in, I would leave it as is. You may be able to get an EZ-lock insert to fit straight in, that's another solid style thread repair insert, and it uses normal thread sizes rather than a proprietry thread. There might be an m12 to m10 repair insert from EZ-lock.

 

ok cheers any website for this i havent seen it antwhere before