Can You Shorten Spark Plug Thread Repair Inserts?

Can You Shorten Spark Plug Thread Repair Inserts? Measure from either the spark plug (washer) or (taper) to the last thread. (NOT to the end of the electrode). This will give you the correct length on insert. TIME-SERT® inserts cannot be shortened for length. Does the thread length on a spark plug matter? There are

How Strong Is A Helicoil Repair?

How Strong Is A Helicoil Repair? Thread Size Max Locking Torque Min. Locking Torque 15th Cycle 3/4(.7500)-10400 lb-in60.0 lb-in 7/8(.8750)-9 600 lb-in 82.0 lb-in 1(1.000)-8 800 lb-in 110.0 lb-in 1-1/8(1.1250)-7 900 lb-in 137.0 lb-in Is a helicoil as strong as original threads? Our frank advice based on experience of about 40 years is that there