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Hi folks,

Putting on a set of f50s with an adapter for the front.  I need to enlarge or reduce the holes depending on what way I go.

 

What is the best way to do this and ensure strength as car will be driven hard at track days etc. 

- drill out mount hole to 14mm

- Helicoil or insert in adapter 

- some special bolts I have heard about. Not sure what they are or where I would get them but a couple of ppl mentioned these in old threads I read.

 

Many thanks :) 

Or, option C. Get or make some replacements for the inserts with the threads you need. That's what I did when I put R34 calipers on R32.

But if you want the quick, easy and perfectly fine option, just bang a drill through the mount hole. if you even need to go back, you can just sleeve it with a short piece of 14mm OD 1mm wall tube.

On 23/08/2020 at 12:27 AM, boo5td_6 said:

 

Also, how strong will the drill need to be to get through the spindle?

 

Go to Sydney/total tools, get a high quality cobalt drill bit and use a low speed on the drill. 

  • Thanks 1

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