29-09-2018, 10:43 PM
A properly fitted helicoil is stronger than the original thread - my big ends are helicoiled for example and are tough as old boots.
However, there isn't much depth of metal here and if the operation isn't all done nice and square and straight the results may fall short. I have two helicoils in my manifold and they tend to annoyingly wind themselves out in to the water jacket behind when you do the studs or bolts up. Also harder to seal than a stepped stud I'd venture.
However, there isn't much depth of metal here and if the operation isn't all done nice and square and straight the results may fall short. I have two helicoils in my manifold and they tend to annoyingly wind themselves out in to the water jacket behind when you do the studs or bolts up. Also harder to seal than a stepped stud I'd venture.