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SiR rear brake question

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Old Jun 10, 2005 | 01:13 PM
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Default SiR rear brake question

I just ordered a set of SIR rear discs to do a rear disc conversion and I have a question. Does anyone know what pads and rotors I will need to order for these? Are they the same as an 92-95 ex/si or are they different? Also does anyone know if the SiR front brake setup is larger than the 95 dx hatch brakes?
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Old Jun 10, 2005 | 02:05 PM
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Default Re: SiR rear brake question (Blazin Civic)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Blazin Civic &raquo;</TD></TR><TR><TD CLASS="quote">I just ordered a set of SIR rear discs to do a rear disc conversion and I have a question. Does anyone know what pads and rotors I will need to order for these? Are they the same as an 92-95 ex/si or are they different? Also does anyone know if the SiR front brake setup is larger than the 95 dx hatch brakes?</TD></TR></TABLE>

you can either use 92-95 ex/si pads or 90-01 integras which are the same. the difference between the sir front brake setup and 95 dx hatch is the caliper brand name: nissin and the size of the rotor.
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Old Jun 10, 2005 | 02:09 PM
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Default Re: SiR rear brake question (Blazin Civic)

All 88-00 integras, civics, CRXs and del sols (except Integra/Civic Type R) use the same rear disc brakes. It doesn't matter which rotors or pads you get...

The SIR NON ABS front brakes are identicle to the 93-94 EX 2dr, 99-00 Si 2dr, 94 Del Sol VTEC (all NON ABS of course). Both the calipers and rotors are larger (10.2") than the regular (9.4") civic front brakes. The larger SIR calipers require a larger 7/8" master cylinder to match (regular civic is 13/16"). If you have a 92-95 civic, you can get that MC from any Non ABS 93-95 EX 2dr, or a 94 only Del Sol VTEC (it bolts right onto your existing booster).

Something worth noting is that you will pay a premium for SIR/EX front brake pads. Even though they are smaller than Integra brake pads, they cost about $20 more. I suggest you get Integra front brakes, and a 15/16" master cylinder from a 91 civic EX 4dr (it will bolt directly on too). The integra brakes have a slightly larger piston, but are externally identical to the SIR brakes....

Good luck.
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Old Jun 10, 2005 | 02:12 PM
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Default Re: SiR rear brake question (94eg!)

PS: All ABS civics/sols already have the larger 10.2" front brakes that are identicle to the integra...
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Old Jun 10, 2005 | 02:47 PM
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Default Re: SiR rear brake question (94eg!)

If I keep the stock brakes up front and just run the SiRs in the rear what master cylinder and prop valve will I need? 15/16 and 40/40?
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Old Jun 10, 2005 | 02:54 PM
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Default Re: SiR rear brake question (Blazin Civic)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Blazin Civic &raquo;</TD></TR><TR><TD CLASS="quote"> If I keep the stock brakes up front and just run the SiRs in the rear what master cylinder and prop valve will I need? 15/16 and 40/40?</TD></TR></TABLE>

you can either use the 15/16 or 7/8. Also you can keep the 40/30 prop valve but it is not required but recommend to get at least the 40/40 prop valve.

I have the 7/8 MC w/ 40/30 prop valve and rear disc for almost 4 yrs now and no issues.
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Old Jun 10, 2005 | 05:36 PM
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Default Re: SiR rear brake question (Lord Helmet)

IF YOU KEEP YOUR STOCK FRONT BRAKES, YOU DON'T NEED TO CHANGE YOUR MASTER CYLINDER.

The 92-95 Si has a small 13/16" master cylinder with rear disc brakes (and so do I), and you don't hear anybody complaining about that. If you hear people talk about a mushy pedal after a rear disc swap, it is because they failed to bleed all the air out of their brake system. When you do a rear disc swap, the only thing you need to change out is your proportioning valve (and even that isn't absoloutly necissary according to some).
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Old Jun 10, 2005 | 06:00 PM
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Default Re: SiR rear brake question (94eg!)

So the stock 96 dx hatch MC is a 13/16?
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Old Jun 10, 2005 | 11:43 PM
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Default Re: SiR rear brake question (Blazin Civic)

All 88-00 civics with 9.4" front discs have a 13/16" MC...
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