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Old 01-25-2004, 12:49 AM   #1
turboICE
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Member#: 33979
Join Date: Mar 2003
Chapter/Region: Tri-State
Location: N.NJ
Vehicle:
2006 STi,'11 OBS
WRB & Black/Silver

Default OEM brakelines vs. aftermarket Stainless Steel

As seen in the picture below the OEM brakelines have a little protrusion that sticks out and fits into the Brembo brake calipers.



Some have commented that its purpose is to prevent the line end at the caliper from twisting, binding and unintentionally locking the caliper and that stainless steel lines that don't have this protrusion will cause problems.

I would have to disagree:

First if the banjo bolt is properly torqued the line is not going to twist or spin at the caliper.

Second the OEM line has a strut mount that is fixed in the hose both with regards to its orientation (in degrees) to the banjo fitting and distance from the caliper - it is on the OEM line to provide proper installation alignment not to keep it in place.

Third the stainless steel lines have strut mounts that float - i.e. they allow the line to spin within the mount and slide to maintain proper position to the caliper, therefore they do not need the alignment guide.

Just my views on the matter after having studied more closely the components - added to that discussions with Goodridge USA engineers both directly and along with another vendor. Goodridge USA can get the fittings but they are not necessary in this application as a specific alignment is not required due to the floating strut mount. Goodridge USA only lists one part for the USDM STi - and it is their brake line without the alignment stub.

Ed.
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Last edited by turboICE; 01-25-2004 at 12:55 AM.
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Old 01-25-2004, 08:19 AM   #2
ellisnc
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Did someone say track day

Default

Be careful about how much play you give the stainless lines. Stoptech had an issue a while ago where the lines were rubbing against suspension components because they were sliding around in the mid-line support bracket. The countermeasure is to put two zip ties on either end of the bracket to control the line movement.
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Old 01-25-2004, 11:10 AM   #3
turboICE
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Default

I have not found there to be that much play - enough to permit the line to be positioned properly in the mid line support both with regards to length and orientation to the two end mounts but not so much that it was freely moving to cause friction on the lines. Also the proposed use of the SS lines with the alignment nub would not address this issue unless the midline mount is fixed on that type similar to the OEM hose - is it?
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Old 01-25-2004, 01:09 PM   #4
ellisnc
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Did someone say track day

Default

I wasn't saying anything in regard to the banjo bolt issue.

From my experience the Goodridge lines are different from the ones that Stoptech sell. (I have Goodridge on the rear and Stoptech on the front) But I also noticed that you said your lines would freely spin and slide in those mounts. My Goodridge lines don't freely move in the mounts, the Stoptech lines however do.

Hopefully that'll clarify my comment.
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