430 Kline Exhaust - Cat to Header Clicker Bolt Help

On the oem setup you have to get the flange in the right place, then use a 1/4 drive socket and an open ender, bring the bolt threads to the end of the nut only

 

You may be overtightening the bottom 2

I found I was not able to tighten anywhere near the 75Nm of the OEM brackets due to the flat plate flange vs knurled OEM type

They are not nearly as strong and if you tighten the bottom ones, it will angle the flange so the top one won't go in

Hand thread them all first, then tighten in succession just until the fast flange starts to give

Mentioned it here

https://www.ferrarichat.com/forum/posts/148921316/

Good luck let us know how it goes

 

These were a little bit of a pain when I put test pipes on with my brother around a month ago.

Having two people helped with angling the exit side up or down to take pressure off the third bolt. I got a single thread or two on the first two bolts and then did the same with the third while having my brother angle the pipe to help close the gap between the flanges. It’s a pain, but doable. Good luck.

 

Just put my 100cell cats on a few months ago. No need to tighten those bolts up too tight. Just enough to seal on those donut gaskets.

you can always go back and tighten them some more if you have a leak. If you tighten them too tightly they will deform the mounting plate.

I put all 3 nuts in and then would spin the mounting plates around until I got them in a spot where I could access all the nuts and bolts. Hand tools are all you need!

 

You need a box end wrench on one side and then both a deep welled and a standard socket with several different extension lengths for the other side.

It's tricky but you can get to all 3 - usually 1 from below and 2 from above.