I have a question about brake master cylinder size for my 1991 Honda Civic STD Hatch. I'm upgrading to the Wilwood 4 piston setup up front and to Si rear discs. Will a 15/16ths brake master cylinder be the right size for a good firm pedal. Currently, I have the 11" bigger rotors with EX calipers and the brake feel blows. There is a fat dead spot until it gets enough fluid in the calipers to do something (Yes, I've bled the brakes many times). Any help is much appreciated.

 

i would go with a 1" master cylinder from a 2nd gen integra... if you get an abs one then you will need the abs brake booster as well... abs and non abs master cylinders and boosters will not bolt up

 

Will a 1" non abs brake master cylinder bolt up to my current booster? Even if it does, is my booster adequate for the bigger BMC? Will the a non-abs or abs complete setup (BMC and booster) just bolt right up to my car? Sorry for all the questions, but I'm pretty sure Fastbrakes won't be open until Monday, so I can't get any definitive answers from them. Thanks for your help so far, and I guess I little searching of this board is in order.

 

You current brakes should be just fine for what you need them for, just get the 1" MC.

BTW how much do you want for the tripple carbs? We got a 240 Z racecar with 4brl, but we need the tripples.

 

I need to finish polishing them, but I was looking to get $1500 for them. They are 44mm, in good condition. It has the really short runner intake manifold (not the Canon), and I'll include all the custom K&N filter, plus the ITG mount and filter casing (the ITG has deteriorated, but it's my understanding that you can just replace the filter for cheap). I also have all the linkage to mount it up, which I'll also include.

 

When you said my current brakes will be adequate, did you mean the EX upgrade? I got a really good deal on the Wilwoods, plus I'm giving the bigger EX brakes to my brother. Is there any 1" MC and booster combination that will just bolt up?

 

To my knowledge most NON abs MC should work, But I have not done it myself.

And wow, the carbs are just a tad out of our price range But im sure they will make someone VERY happy. PM me a pic if you have one.

 

How much is in your price range? I think Webers may be more up your alley. Cheaper and don't have that old school Japan collectors thing. I really wanted to make them into more of a show piece for people, but if someone with a race car is interested then I'm game.

 

We would be willing to shell out about 500 for a set of carbs. Its not our priority right now, there are way too many things to get done on it.

 

I would upgrade to the 90-93 Integra non ABS 15/16'' MC AND booster. You can use the 1'' ABS MC and booster but one of the fittings is too big and you need to reflare your brake line with that fitting. Too much work for 1/16 more of an inch.

Also ABS and non-ABS MCs and boosters will all bolt up to each other but they won't work right. Search for my FAQ about it.

 

Thanks. If I'm going to go 15/16ths, then I will just pull one off of a similar year EX sedan. I felt the pedal pressure with an 89 Si MC on front Wilwoods with rear drums and it was excellent. I'm worried about the extra volume from the rear discs (Main reason is to later upgrade the rears, because I'm add more weight back there). I also need to get a new prop valve too, right?

 

I tried to look at your FAQ and your website, but your bandwidth has been exceeded. I'm guessing I should just contact Fastbrakes. What's the difference between Integra MS, prop valve, and booster vs. an EX MC, prop valve, and booster?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by moridin2004 &raquo;</TD></TR><TR><TD CLASS="quote">I tried to look at your FAQ and your website, but your bandwidth has been exceeded. I'm guessing I should just contact Fastbrakes. What's the difference between Integra MS, prop valve, and booster vs. an EX MC, prop valve, and booster?</TD></TR></TABLE>
The EX stuff all bolts up (the master is a direct bolt in) Not %100 sure of the difference in the prop valves, but I would suggest probably using an integra valve. I have been using this setup on my hatch with great sucess at the track. I have SiR front knuckles with 90 integra rear disc brakes, and an SiR master with stock booster. Pedal feel when I have good pads in is awesome. Also if you can I would consider using integra rear discs, you can usually get them easily and cheaply and would be an upgrade over the CRX units to help balance out the system a little.

 

I actually already have the rear discs from a newer Civic (yes, with the trailing arms and all required hardware). If 15/16ths is adequate for good feel, then I'm sure I'll be fine (I don't want to spend any more money than needed). Anyone else out there have Wilwood 4 piston front brakes and rear discs?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by moridin2004 &raquo;</TD></TR><TR><TD CLASS="quote">I actually already have the rear discs from a newer Civic (yes, with the trailing arms and all required hardware).</TD></TR></TABLE>
what year civic? unless they are 99-00 Si they will be smaller units than an integra setup, you'll also need the e-brake cables off of an integra to make them fit onto a hatchback. I'm sure you could easily sell the CRX discs and pick up the teg units for around $100. Also when doing the swap, the rear trailing arms are not required, and if you use integra parts, can not be used. You only need the hub/brake assembly, cable, and brake hose. I can tell you from experience this was the way to go on a fastbrakes 11" setup (used SiR rear), and can only imagine that it will be required on the 4 piston setup. If you consider the force that will be applied with the front brakes vs the rear, the only way I'd see around this problem would be to use an adjustable prop valve, otherwise you have such a large difference that no stock prop valve will be able to balance your system out properly.

 

They're from a 99 Si. I know I need to get a Wilwood adjustable prop. valve eventually, but on CRX that the Wilwoods came off of, he was running stock everything else - including the drums (except for lines and the Wilwoods). He ran it hard at the track and did not have any problems, but he may not have been making as much use of his rear tires for braking as he could have.

 

Cool then, I just assumed you meant CRX SI, being in this forum. I'm fairly certain those E-brake cable will work for you, may have to move around the tabs a little though. Do not use the trailing arms, put the hub/brake assembly onto the Civic trailing arm.

 

I have brand new e-brake cables along with everything else. That's a bonus, because one of mine snapped.

 

I just recently upgraded to te 90-93 Integra 15/16ths master cylinder. I got all remanned stuff from parts stores, and the whole project cost me about $180. The hardest part was finding the brake reservoir cap, the dealer has them for $40. I pulled one off a parts car.

This upgrade is definately worth the money, pedal feel is greatly improved.

 

Thanks for the info. I sent a message to Fastbrakes to see what he would recommend. I want to make sure I can fill the Wilwoods and rear discs with fluid w/o having to put the pedal to the floor.

 

I went ahead and purchased a brake master cylinder from Brian at Fastbrakes (15/16ths). I didn't want to have to deal with a used or remanufactured piece that may not work (or trying to get the right part from the idiots at Autozone or Pepboys). He said it should be fine with the front Wilwoods and rear Si discs. I'll let you guys know how it goes.

for Fastbrakes. Brian has done more for the Honda community in the braking deparment than anyone. He runs an awesome company and is definitely a stand up businessman.