nick'sturboz Posted September 27, 2009 Share Posted September 27, 2009 I have a 1973 240zt. I have just recently turbocharged my z and the charge pipe come unglued. when the pipe come off the brake booster quit working. i realize that the booster could have just been old but the check valve is new. is there a different check valve or booster that i need to use? i have been reading treads and they say to use the 15/16 booster out of a 79, will this booster work with turbocharging? mods to z 83 280zxt engine (p90a) t3t4 turbo (cheap) 0280150400 injectors 45lb npr intercooler ngk wideband megasqiurt ecu stag 1 centerforce turbo clutch r180 4.11 rear end (at its limit) toyo proxies tires (fun) to list a few. and any help would be great. Quote Link to comment Share on other sites More sharing options...
RB26powered74zcar Posted September 27, 2009 Share Posted September 27, 2009 Did you make sure everything got re connected after you blew the charge pipe? You must get vacuum with out it bleeding off for your booster to work. The 15/16 is the master cyl size to upgrade to, not booster size. Your booster should work fine for you long as there are no vacuum leaks Quote Link to comment Share on other sites More sharing options...
nick'sturboz Posted September 27, 2009 Author Share Posted September 27, 2009 the booster never lost vacuum, the charge pipe came off the turbo. i have already put in a new booster, i just want it to be reliable.(brakes are important). i just don't understand why the booster broke if the check valve was in working order. now when it broke the car went from 11psi(160kpa) to vacuum in a split second, was that to much for the check valve or was the booster just old? sorry i miss read the tread i thought it was the booster not the master for the upgrade. i do fleet maintenance and i am a full time student (i work during the day and for free at night in school, so when i have time to read about upgrades i am half asleep) thank you for the response! Quote Link to comment Share on other sites More sharing options...
WizardBlack Posted October 7, 2009 Share Posted October 7, 2009 The booster doesn't see boost if the check valve is installed right. Quote Link to comment Share on other sites More sharing options...
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