Brake Booster

[DarkAccord600]

I plan on doing a rear drum to disk conversion on my Accord. I need to know if the brake booster for my rear drum accord can be used when I switch over to disk.

[jcrx]

Depends on if you swap out master cylinders. If not then you don't need too. If you do switch to a bigger one, then you may need to, to move the fluid through the MC.

[Tofuboy]

do you know if your accord's brake system use combination valve, metering valve, porportion valve or none at all?

[DarkAccord600]

Originally Posted by Tofuboy

do you know if your accord's brake system use combination valve, metering valve, porportion valve or none at all?

Explain?

[jcrx]

What he is saying is, which of these systems does your Accord employ? But since they are built into what is called the proportioning valve it's irrelevent.

[Tofuboy]

What he is saying is, which of these systems does your Accord employ? But since they are built into what is called the proportioning valve it's irrelevent.

Actually it is being build into what is called "combination valve" not propertioning valve, which includes metering valve, proportioning valve and pressure differential switch for most cars of today.

I don't know if your year and model accord offers "option" for 4 wheel disc brake or has an aftermarket kit to switch over, but if you think you can just slap on a disc and caliper for the rear and have better braking then you are totally wrong.

In the event of converting a rear drum to disc, you will most likely need a new combination valve that has been calibrated to prevent rear wheel lock up and even braking so whenever you step on the brake your car will not "fish tail" (you may think this is fun, wait til you're trying to brake on the free way during high speed).

Anyway, your question is regarding the brake booster and the answer is most likely not. The brake booster is not the real answer to your project.

[jcrx]

Originally Posted by Tofuboy

Actually it is being build into what is called "combination valve" not propertioning valve, which includes metering valve, proportioning valve and pressure differential switch for most cars of today.

He has a 96, and it's called a dual proportionoing valve, at least according to the Honda service manual. The metering valve and prop valve are built into what is called the proportioning valve. Technicaly it is a combination, as it contains both parts, but it isn't called a combination valve.

[eckoman_pdx]

JCRX is correct as to the name Honda has given the part...it may well be a combination valve of sorts in design, but the Part's name by Honda is a propertioning valve. That beng said, if he has a 96, is he swapping on the disc brakes from an EX? If that's the case, can't he use the EX master cylinder and propertioning valve. That should give him the correct brake balence, since it was designed for the 4 wheel disc system, which he is switching to.

[DarkAccord600]

I do plan on using all Ex parts to switch over but all I really needed to know was what parts to get.

[jcrx]

Going from drum to disc in the rear you need, brakelines, and cables, maybe the complete trailing arms, I know the civics are the same, but the Accords may differ. Booster and master cylinder are optional if you're just doing the rears and not upgrading the fronts too. Your pedal will feel softer if you don't, but stop decent. The prop vavle is what you need to worry about, as Tofu said the rear brakes displace different amounts of fluid and it needs to be metered out correctly.

[DarkAccord600]

Do you know the exact proportion each wheel gets in the Ex.?