stmotorsports
Senior Member
1" ITR/GSR booster/master cylinder swap info
just dropping this in for search purposes...
Just finished doing this swap in my 2000 Civic Si. I did some research before starting this project only to find a lot of write-ups don't specify the one fitting you need to change when going from standard teg/civic size mc is the rear (closest to firewall). You need to get a 12mm x 1.0 to 3/16" line inverted flare fitting which apparently is somewhat uncommon. I called and drove around for half a day to all different parts stores in my area only to find that noone had one of these. Not by itself or on a section of repair line, nothing. Your best bet is to just go straight to a hydraulics supplier, I ended up getting one right away and it cost me just shy of $2.
btw fwiw, going from my stock Si 15/16"/270V mc & booster to the 1"/290V made bearly any difference at all. If you're considering this swap to improve your lackluster EM1 brakes don't bother. The good news is now you have an excuse to do the full 5-lug swap
just dropping this in for search purposes...
Just finished doing this swap in my 2000 Civic Si. I did some research before starting this project only to find a lot of write-ups don't specify the one fitting you need to change when going from standard teg/civic size mc is the rear (closest to firewall). You need to get a 12mm x 1.0 to 3/16" line inverted flare fitting which apparently is somewhat uncommon. I called and drove around for half a day to all different parts stores in my area only to find that noone had one of these. Not by itself or on a section of repair line, nothing. Your best bet is to just go straight to a hydraulics supplier, I ended up getting one right away and it cost me just shy of $2.
btw fwiw, going from my stock Si 15/16"/270V mc & booster to the 1"/290V made bearly any difference at all. If you're considering this swap to improve your lackluster EM1 brakes don't bother. The good news is now you have an excuse to do the full 5-lug swap