thread size on manifold

[mike-evans]

removed the manifold on my 172 to get at the plugs and noticed that 1 of the back 2 threads has stripped so i want to helicoil it. Does anyone know the thread size of the this thread? I think its M8 but aint 100% sure and need to grab helicoils to do it later..

 

[sideways danny]

M6x1 if it's the ones i think you mean

 

[mike-evans]

M6x1 if it's the ones i think you mean

it might be, theres 5 on the front and 2 on the back holding the manifold on..

 

[sideways danny]

in that case, yes