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320i Front Brakes


devo1

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I have the 320i disc and Girling calipers to upgrade (actually any brakes would be an improvement but that...) the front brakes. I have read that welding over the mounting holes on the calipers and re-drilling them in-board will give a bit more clamping surface on the disc and more clearance for 13" wheels. It would pick up about 1/8" extra surface on the pads which doesn't sound like much but it probably adds about 15% increase clamping area if I did the math correctly.

Anybody with this combo bothered to do this? NAy recommendations advice on the welding. My only concern is what the heat from welding will do to my nice new caliper pistons I just had pressed.

Thanks

76 Sahara 2002

73 CS Polaris

84 Tucker Snocat!!!

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Guest Anonymous

i believe ireland engineering does this with all of their calipers. they would probably tell you the best way to go about it or do it for you.

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Y'all hate this, but...

I just take a die grinder, ovalize the holes a bit,

and slide the calipers in that 3/16" that they need.

So far nothing's failed- and I track the car regularly...

It actually helps a lot with pad binding and cold lockup...

t

"I learn best through painful, expensive experience, so I feel like I've gotten my money's worth." MattL

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As an interesting follow up to my question, the local machine shop I took this question to said they are prohibited by law (it's Canada....) to making any alterations to a fabrication related to brakes, steering or suspension. Something about altering safety related items that are certified for use on public roadways.

That doesn't mean I can't do it myself or buy modified components (like Irelands calipers) and install them but no shop will touch it. To that end, he can produce machine plugs for me to press in and then find a drill press and rebore the holes with the offset.

Or not.

If we learn from our mistakes does that mean I have to make them all?

 

73 CS Polaris
76 2002a Sahara

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