Aftermarket control arm mount-stupid question

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12-22-2014, 03:32 PM

ghunt

3rd Gear Member

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Join Date: Oct 2011

Location: WV

Posts: 750

Aftermarket control arm mount-stupid question

I bought a J&M upper control arm mount from a guy and it didn't come with any paperwork.

Which mounting hole is considered the "stock" mounting hole and which one should I use for a car that is lowered 1"?

12-26-2014, 04:15 PM

ghunt

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Join Date: Oct 2011

Location: WV

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Seriously, nobody can tell me???

12-26-2014, 04:23 PM

13V6coupe

I drive a V6 because I'm a giant wimp

Join Date: Nov 2012

Location: MN

Posts: 101

It is Christmas week.

But I don't know.... you could contact J&M

12-26-2014, 09:18 PM

CMcNam

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Join Date: Apr 2012

Location: Massachusetts

Posts: 874

This was something I was wondering as well, hope you get an answer!

12-27-2014, 05:55 AM

Scott2

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Join Date: Sep 2009

Location: Ontario, Canada

Posts: 355

I don't know the answer but have a suggestion. Put them side by side (OEM and J&M) flat on a table and pass a bolt through the OEM, the hole in the J&M that matches the OEM the closest I would consider the "stock" location.

12-27-2014, 08:17 PM

darksky1984

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Join Date: May 2011

Location: Elgin, OK

Posts: 297

The bottom hole should be the stock setting. But as scott2 said, measure the stock hole on the OEM unit and compare it to the J&M part. But the bottom hole looks like the right position.

12-28-2014, 06:47 PM

Norm Peterson

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Join Date: Feb 2007

Location: state of confusion

Posts: 7,635

The way the advertising copy reads,

Quote:

allowing changes in your instant center for better tire bite during acceleration

it suggests that the upper hole is in approximately the OE location and the lower one provides for the increase in anti-squat (anti-squat is part of what moving the IC accomplishes).

Norm