Testing a Proportioning Valve?

Mattax

Just the facts, ma'am
FABO Gold Member
Joined
Feb 7, 2013
Messages
14,831
Reaction score
10,635
Location
Phila. Pa
But if the surfacing is too smooth, or has contamination, or with some linings hasn't had proper transfer of lining material, then that would explain poor front disk performance.
 

72bluNblu

FABO Gold Member
FABO Gold Member
Joined
Nov 28, 2008
Messages
13,416
Reaction score
5,871
Location
NorCal
Ok, so thin rotors are probably not the issue.

Probably not. Although if they're under spec they should be changed regardless.

But if the surfacing is too smooth, or has contamination, or with some linings hasn't had proper transfer of lining material, then that would explain poor front disk performance.

Exactly. The rotors being thinner than spec probably isn't the issue, but if the rotors are worn out they could have other problems with surfacing and contamination that could be causing at least some of the issue. If they've been overheated, glazed, contaminated etc it can cause issues. And if they were really overheated at some point it could even have changed the heat treat on the metal which can change the wear characteristics. Usually they have to glow red for that to happen so it isn't super common, but it does happen. People do dumb stuff, so if you don't know the full history of the rotors almost anything is possible.
 
Top