crazyoctopus Posted July 10, 2010 Share Posted July 10, 2010 I swapped in a junkyard 15/16th BMC a monthish ago, and have completely bled the BMC a few times now and the sound still persists.Let me preface by saying that I have yet to find a leak, the rod (cant remember what it is called) has been adjusted correctly to ensure proper clearance, and the disc (again forgot the name) in the brake booster was in good condition and placement when I switched over to the 15/16th.The car does slow down when i push the pedal, however the pedal feel is not linear. It is normalish at the first 3/4th of travel and the last quarter is gets stiff. I can lock up the brakes, but only after i get into the stiff part of the pedal travel. For the brake mods: I have removed the stock proportioning valve and brake switch and replaced them with a wilwood proportioning valve and a union-t. The front calipers are stock, the rears are the 240sx disc conversion; the lines running to those calipers are SS. Do i need to get a new one, or is this sound normal? Quote Link to comment Share on other sites More sharing options...
Tyler Posted July 10, 2010 Share Posted July 10, 2010 I'm not sure if it is the mc or anything, but you can buy a rebuilt one from autozone for fairly cheap and turn that one in for the core. Quote Link to comment Share on other sites More sharing options...
hoov100 Posted July 10, 2010 Share Posted July 10, 2010 Sounds like the booster more then the M/C. Every z I've owned except for two made that noise whenever I would hit the brake pedal. Quote Link to comment Share on other sites More sharing options...
crazyoctopus Posted July 10, 2010 Author Share Posted July 10, 2010 any issue with brake pedal feel, or braking force because of it? Quote Link to comment Share on other sites More sharing options...
Steveoen Posted October 13, 2010 Share Posted October 13, 2010 did you figure this out because i have the same problem now with the pedal feel and the noise Quote Link to comment Share on other sites More sharing options...
crazyoctopus Posted October 14, 2010 Author Share Posted October 14, 2010 nope, car has been on jack-stands for a couple months now and it never really went away. the only way I can see getting rid of this is by either getting a new one or rebuilding the current one. Still though, I don't know if it would solve the problem. Thanks for reminding me, it will be significantly easier to remove and fix it with the engine out. Quote Link to comment Share on other sites More sharing options...
Steveoen Posted October 14, 2010 Share Posted October 14, 2010 ha no problem i think one of my caps might be bad i ordered a new cap to replace the one that is on teh bad side so ill see if thats it and let you know otherwise time for a rebuild i suppose Quote Link to comment Share on other sites More sharing options...
JMortensen Posted October 14, 2010 Share Posted October 14, 2010 Sounds like the reaction disk to me. Maybe it isn't sealing in it's spot in the booster. Regardless, I think swapping the booster would solve the problem, but I think the problem is the disk. Quote Link to comment Share on other sites More sharing options...
Steveoen Posted October 14, 2010 Share Posted October 14, 2010 do you know if that disk comes with the master cyln rebuild kit? Quote Link to comment Share on other sites More sharing options...
JMortensen Posted October 14, 2010 Share Posted October 14, 2010 If you buy a rebuilt master it's already in there, you don't have to mess with it. Quote Link to comment Share on other sites More sharing options...
JMortensen Posted October 14, 2010 Share Posted October 14, 2010 If you buy a rebuilt master it's already in there, you don't have to mess with it. Quote Link to comment Share on other sites More sharing options...
Steveoen Posted October 16, 2010 Share Posted October 16, 2010 ok jsut ordered one from autozone hopefully that works i dont have money for a brake booster at the moment Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.