RHochreuter Posted December 27, 2011 Share Posted December 27, 2011 Hi guys, I recently upgraded my jap-spec brakes to uk-spec brakes. I replaced the following: * Calipers * Disks * Pads * brake fluid * brake lines After the upgrade i have bleed the system a couple of times. For some reason i need to floors the brake-pedal before anything happends. It's really bad. Did i miss something for this upgrade? Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted December 27, 2011 Share Posted December 27, 2011 Are the calipers on the correct sides? All the bleed nipples should be at the top, if not they wont bleed properly and still be full of air. Id say have a look at that first. Quote Link to comment Share on other sites More sharing options...
RHochreuter Posted December 27, 2011 Author Share Posted December 27, 2011 Yeah the calipers are installed correctly with the bleed nipples on the top. Quote Link to comment Share on other sites More sharing options...
Dnk Posted December 27, 2011 Share Posted December 27, 2011 How much fluid have you bled through ? Is the master cylinder okay ? Quote Link to comment Share on other sites More sharing options...
Havard Posted December 27, 2011 Share Posted December 27, 2011 Sounds like there is still air in there to me. Is the warning triangle on? H. Quote Link to comment Share on other sites More sharing options...
RHochreuter Posted December 27, 2011 Author Share Posted December 27, 2011 I guess i've bled somewhere around ½ liter. I have bled 4 times. I have of couse filled up meanwhile. I don't know if the master cylinder is ok. I assume that it is working as intended. The car did not have any problems braking prior to the upgrade. I don't know if my assumption is correct? Quote Link to comment Share on other sites More sharing options...
RHochreuter Posted December 27, 2011 Author Share Posted December 27, 2011 No warning triangle. Quote Link to comment Share on other sites More sharing options...
adnanshah247 Posted December 27, 2011 Share Posted December 27, 2011 Sounds like there is still air in there to me. Is the warning triangle on? H. agreed. happened to me when i upgraded, hand to spend ages bleeding it and lots of brake fluid was used to get it right Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted December 27, 2011 Share Posted December 27, 2011 Did you bleed the ABS unit?? Quote Link to comment Share on other sites More sharing options...
Dnk Posted December 27, 2011 Share Posted December 27, 2011 agreed. happened to me when i upgraded, hand to spend ages bleeding it and lots of brake fluid was used to get it right You shouldnt have to spend ages, we did my car after fitting new hoses and calipers and it took under 1 hr and approx 1 litre of brake fluid, we bled through all the old fluid and replaced with new. We did use a vaccum bleeder though and the brakes were 100% spot on first time and still are a couple of years later Quote Link to comment Share on other sites More sharing options...
RHochreuter Posted December 27, 2011 Author Share Posted December 27, 2011 Tricky-Ricky: I only bleeded the 4 calipers - should i bleed the ABS-unit seperately? DnK: I used a vacuum bleeder as well. I think i bled it 4 times so far Quote Link to comment Share on other sites More sharing options...
Dnk Posted December 27, 2011 Share Posted December 27, 2011 (edited) Have a look in the WSM in the brakes system section BR66 covers the abs unit I didn't have to bleed my abs and just bled the whole system via each caliper and the brakes were spot on. Worth doing the checks though incase thats the problem but i'd be inclined to bleed it once more. http://www.turbosupras.com/pages/en/pages/technical/a80tsrm.htm Edited December 27, 2011 by Dnk (see edit history) Quote Link to comment Share on other sites More sharing options...
RHochreuter Posted December 27, 2011 Author Share Posted December 27, 2011 I will try that out tomorrow thanks. Quote Link to comment Share on other sites More sharing options...
Dnk Posted December 27, 2011 Share Posted December 27, 2011 No problem Good luck Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted December 27, 2011 Share Posted December 27, 2011 Tricky-Ricky: I only bleeded the 4 calipers - should i bleed the ABS-unit seperately? DnK: I used a vacuum bleeder as well. I think i bled it 4 times so far When i changed my brake lines, i had a very spongy peddle until i bled the ABS unit. Quote Link to comment Share on other sites More sharing options...
Guest Rsand85 Posted December 27, 2011 Share Posted December 27, 2011 When i changed my brake lines, i had a very spongy peddle until i bled the ABS unit. same here and it was a pain to bleed to!! Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted December 28, 2011 Share Posted December 28, 2011 Push all the caliper pistons fully back home into all the calipers with the bleed nipples open, then bleed the syatem again. How are you bleeding it? I have seen some very "odd" methods used that plain just do not work. Quote Link to comment Share on other sites More sharing options...
little num Posted December 28, 2011 Share Posted December 28, 2011 To make sure you are getting new fluids into the calipers add 3 drops of food dye to your new fluid ( I used red) then when the fluid comes out the calipers pinky then your sure you have new fluid in all the pipes and calipers, in all the supra's ive had i have never bled the ABS unit and have always had megga brakes using UK calipers - stock disc's - porterfield R4 race pads. And i always use an easy bleed kit, push's the fluid into the system using your car tyre valve to pressure the system up. Quote Link to comment Share on other sites More sharing options...
RHochreuter Posted December 29, 2011 Author Share Posted December 29, 2011 Chris: I will try to push back the pistons. The way i bleed: I start with the brake furthest away from the master brake cylinder and then work my way to the closest brake (Left rear -> Right rear -> Left front - Right front). I have tried the other way around as well - starting with the closest wheel. Little num: i will try with the food dye Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted December 29, 2011 Share Posted December 29, 2011 If you still have the stock type rubber brake hoses clamp them off one at a time, or both fronts and both rears, if you have two hose clamps, and you can narrow down where the air might be in the system. Be careful using anything other than proper brake hose clamps as you can easily damage the hose and leave it liable to a burst if you are brutal with things like Mole grips. Quote Link to comment Share on other sites More sharing options...
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