Sorry i looked, but i could not find anything on this to help me

wanted to know what do i need to change as far as master cylinder, brake booster when i change drums to disc brakes, because on hot days my brakes kinda sink in! i know that i am suppose to change the master cylinder for a gsr or itr one, but i think i heard i can run a da MC not sure. but i want to keep the fitting on it 10x1.0 mm

 

u needa change ur prop valve to a non abs 40.40 pv. .n if u wanna swap mc.s the gsr n itr r both 1in.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jdmsoles &raquo;</TD></TR><TR><TD CLASS="quote">wanted to know what do i need to change when i change drums to disc brakes </TD></TR></TABLE>
on your 92 civic cx, since you are swapping out the drums for discs, you'll need a non-abs valve proprotioner from a rear disc. it's not a sin if you don't swap out your proportioner (works fine with drum prop), since most of your braking is handled by your front brakes. you'll also need to source brake hoses from a rear disc since your drum brake hoses won't work

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jdmsoles &raquo;</TD></TR><TR><TD CLASS="quote">wanted to know what do i need to change as far as master cylinder, brake booster because on hot days my brakes kinda sink in!</TD></TR></TABLE>
sounds like your master cylinder is toast, definately replace it and install 13/16 master cylinder. have plenty of rags ready (brake fluid eats paint) and a flare wrench so you don't strip the fitting. bench bleed the m/c before you install it or you'll go through 2-3 bottles of brake fluid

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jdmsoles &raquo;</TD></TR><TR><TD CLASS="quote">i know that i am suppose to change the master cylinder for a gsr or itr one, but i think i heard i can run a da MC not sure. but i want to keep the fitting on it 10x1.0 mm</TD></TR></TABLE>
since you are only upgrading your rear drum brakes to rear disc brakes, it is not necessary to upgrade your stock 13/16 master cylinder unless you have upgraded your front brakes to a larger 10.3" or 11" rotor set-up.

When you upgrade to bigger front calipers (that use a larger pistons), you are pushing more fluid through the brake lines. Therefore, you should want a larger master cylinder to push this more fluid. in your case, general rule is…with your stock civic, with the stock front calipers & 9.4" rotor, keep your 13/16” MC. Any bigger and your pedal will be too stiff.

keep in mind, since you are ONLY upgrading your rear discs...it is not necessary to modify your m/c. use the appropriate master cylinder...big master cylinders (such as the 15/16" or 1" m/c) are meant for big front brakes (10.3" or 11" front rotor) & 13/16" for stock civic calipers (9.4" front rotors).

*** for example, on the 92-95 civic si & del sol si, it has a 13/16 master cylinder, civic calipers w/ 9.4" front rotors and rear disc brakes on a disc proportioner.

swap out your drums for disc brakes...worry about the prop later. replace & install a new 13/16" m/c in there since you're using civic calipers (w/ 9.4" front rotors).

 

I will tell you right now that a 30/40 prop valve from an SI hatchback will work just fine; you don't need a 40/40.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jdmsoles &raquo;</TD></TR><TR><TD CLASS="quote">because on hot days my brakes kinda sink in</TD></TR></TABLE>
Too much generated heat is causing your shitty pedal. You should upgrade to a quality pad and rotor and that should take care of your problems there.

Personally, I love my 15/16" MC on my Civic. I still have Civic brakes on the front, too. Much more "responsive" feel and tons of braking power now that it's combined with the rear discs. I have a 40/40, though, couldn't tell you how big a difference it makes...

 

is there a direct bolt in master cylinder for upgraded fronts? from the faq's section they were talking about a master cylinder from a 91 4dr..

any other ones i can use? that bolt directly or do they have to be modified?