Needed an M9 x 1.25 Bolt for header
Thread Starter
Joined: May 2005
Posts: 1,410
Likes: 11
From: Port St. Lucie, Fl
Needed an M9 x 1.25 Bolt for header I just wanted to share my experience to help someone else out. I had cross stripped a header bolt hole on an LS6 C5 a few days ago using M8 x1.25 well I re tapped it and for a while it had a hold, but the threads started to get weak again and would not hold the 18lbs tq.
Instead of removing the pass heads, the only option was to go up the next tap size on my craftsman set using the M9 x 1.25. I did not know at the time that basically the M9 bolt hardly exists. Well I had to make my own then.
By using an M10 bolt very (common) grinding it down to an M9 using a file and re threading it, with an M9 thread tap, Guess what, it worked.
Also make sure you clean out the stripped hole using some oil on the tap and slowly insert and remove.
Hope this helps.
Instead of removing the pass heads, the only option was to go up the next tap size on my craftsman set using the M9 x 1.25. I did not know at the time that basically the M9 bolt hardly exists. Well I had to make my own then.
By using an M10 bolt very (common) grinding it down to an M9 using a file and re threading it, with an M9 thread tap, Guess what, it worked.
Also make sure you clean out the stripped hole using some oil on the tap and slowly insert and remove.
Hope this helps.
Thread Starter
Joined: May 2005
Posts: 1,410
Likes: 11
From: Port St. Lucie, Fl
Thread Starter
Joined: May 2005
Posts: 1,410
Likes: 11
From: Port St. Lucie, Fl
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Thread Starter
Joined: May 2005
Posts: 1,410
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From: Port St. Lucie, Fl
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