# brake master cylinder???
**URL:** https://forums.speedlife.net/t/brake-master-cylinder/128926
**Category:** SON240sx Automotive
**Created:** [October 18, 2009, 8:33pm UTC](https://forums.speedlife.net/t/brake-master-cylinder/128926 "2009-10-18T20:33:05Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@pledge-master](https://forums.speedlife.net/u/pledge-master)
#### Post date: [October 18, 2009, 8:33pm UTC](https://forums.speedlife.net/t/brake-master-cylinder/128926/1 "2009-10-18T20:33:05Z")
my question is : i am installing r32 gtr brakes on my 89 240 front and rear. my car does have ABS , will my brakes be shit/feel shitty if i dont change the brake master cylinder to one of the skyline/and or 300zx? or will i be ok running my existing master cylinder ? any help/advice would be greatly appreciated thanks.
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### Author:  [@dp-ped](https://forums.speedlife.net/u/dp-ped)
#### Post date: [October 18, 2009, 8:58pm UTC](https://forums.speedlife.net/t/brake-master-cylinder/128926/2 "2009-10-18T20:58:55Z")
If your going to install the rear brakes as well might as well do it all.
1. Remove the abs.
2. pick up a 1 1/16 bmc from Napa … will run you around $130 + core
3. go to Nissan and buy a new reservior, or use the existing one from your bmc (they might fit)
4. Enjoy your new brakes
-Ped
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### Author:  [@pledge-master](https://forums.speedlife.net/u/pledge-master)
#### Post date: [October 18, 2009, 9:06pm UTC](https://forums.speedlife.net/t/brake-master-cylinder/128926/3 "2009-10-18T21:06:25Z")
ok thanks… what if i left the abs in ? the skyline that i got the brakes off of had abs…or am i just better off without it all together?
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### Author:  [@Singh](https://forums.speedlife.net/u/Singh)
#### Post date: [October 18, 2009, 10:04pm UTC](https://forums.speedlife.net/t/brake-master-cylinder/128926/4 "2009-10-18T22:04:34Z")
abs is gay. Remove it, its not that hard to do. But its not necessary to remove make your brake swap work, just a added plus i guess.
You can keep your stock brake master cylinder but brakes won’t be used to there 100% potential and pedal will still feel gay.
Go to NAPA get one and exchange your stock 240 as a core.
and install that one. It makes a huge difference.
When i did my brake swap, my brakes felt like shit. Once i swapped the BMC, the brakes were completely different.
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### Author:  [@pledge-master](https://forums.speedlife.net/u/pledge-master)
#### Post date: [March 29, 2010, 11:43am UTC](https://forums.speedlife.net/t/brake-master-cylinder/128926/5 "2010-03-29T11:43:08Z")
so i went to napa today and the guy didnt know what i was talking about when i said i needed a 1 1/16 bmc. do i just need to buy a bmc that is for a 300zx?
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### Author:  [@kapetajr](https://forums.speedlife.net/u/kapetajr)
#### Post date: [March 29, 2010, 11:49am UTC](https://forums.speedlife.net/t/brake-master-cylinder/128926/6 "2010-03-29T11:49:27Z")
Yea Man, there is a guide to all the 300zx BMC :
Master Cylinders:
46010-30P01 Manufacture date 2/89 – 7/90 (17/16" NA Tokico)
46010-30P02 Manufacture date 7/89 – 7/90 (17/16" TT Tokico)
46010-30P02 Manufacture date 7/90 – 2/91 (17/16" NA & TT Tokico)
46010-30P10 Manufacture date 2/89 – 7/90 (15/16" NA Nabco non-ABS)
46010-30P21 Manufacture date 2/89 – 7/90 (17/16" NA Nabco)
46010-30P22 Manufacture date 7/89 – 7/90 (17/16" TT Nabco)
46010-30P22 Manufacture date 7/90 – 2/91 (17/16" NA & TT Nabco)
46010-45P00 Manufacture date 9/91 – 9/93 (1" NA TT Tokico)
46010-45P00 Manufacture date 2/91 – 9/91 (1" NA & TT Tokico)
46010-45P20 Manufacture date 9/91 – 9/93 (1" NA & TT Nabco)
46010-45P20 Manufacture date 9/93 – Up (1" NA & TT Nabco)
i got that from here: [http://importnut.net/300zxbrakeswap.htm#MC](http://importnut.net/300zxbrakeswap.htm#MC)