durring my header installation, i think i might have cross threaded a bolt that goes through the exhaust manifold into the head,,what would happen if i did? is that repairable?
-Jason

 

You might be able to tap that, depends on what cylinder and clearance for the tap.

 

its the 2nd bolt from the front on the passenger side...fairly easy access,,,,what is tapping?

 

Tapping is using a special drill bit almost that when slowly turned in, it will either fix the threads that were messed up or create new ones. You'll have to find out what size threads are used in the cylinder heads. I have one that is cross threaded right now and I just left it, so far so good.

Aaron

 

If you can't tap it you can helicoil it. Either way you aren't screwed.

Joe

 

Dude if you don't even know what tapping is then I would take it to a shop and let them figure it out. The reason I say that is you don't wanna experiment and mess it up.

 

I AGREE, You don't wanna get yourself into a mess if you don't even know what it mean's

 

I ran into the same prolem tonight with mt SLP install, However it was only the first threas or two. I chased them but chasing a cross threaded hole takes a lot of experience and practice to not further damade the thread. The size is 3/8-16 and they are only about 1/2 in deep so use a bottom tap