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Old 04-11-2013, 05:37 PM   #63
mif73
CNC fixer guy
 
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Join Date: Sep 2006
Location: Melbourne Vic
Posts: 609
Default Re: Definitive au2-au3 brake upgrade thread

Quote:
Originally Posted by mad2 View Post
Hi, very informative - hava a AU3 here so will keep parts for a later swap


just one question re swaybar bolts thru chassis ... does there not need ta be a 'crush tube' ??
Funny about that. I am just about to fit the calipers on my s1 to s2 upgrade.
The other problem is drilling the holes square so the exit hole lines up with the bracket holes.

If fitting a crush tube you would also need to drill the outside holes a bit larger for the tube to fit through and then weld it to the outside of the rail.

I used m8 x100 high tensile bolts and nylocs with loctite for now.
If it loosens i will install crush tubes 8.8mm id x 12mm od.

If you dont weld it then you would make the nut tight and bottom out but it probably wont clamp the rail tight enough.

The other issue is clearance for headers with a v8.

Mine has pacemaker tri y's and i have less than 10mm clearance to the bolt end spacing it with 2 washers on the outer side of rails.

Bunnings sell a long 8mm bit which can drill through the rail but use cutting oil and not too much speed as it is high strength steel.

Measure the rail width and space the bit with a socket etc so you dont drill into your exhaust etc.

Cheers.
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