Brake booster

[BLACKpsiECLIPSE]

What is everyone doing about their brake booster gettin boost?

 

[Locke]

It won't unless the check valve is damaged.

 

[BLACKpsiECLIPSE]

hmm shit... yea so just change the check valve?... also how can it get damaged? car has 70,000 miles on the body and shit like that so its not uber old...

 

[Locke]

Dirt or grime can cause the valve to not close. If you cannot find the valve in the vac line, then your's would be integrated into the booster. You could then just add a check valve to the line.

 

[BLACKpsiECLIPSE]

Yeah mine must be in the booster. So jsut splicing a check valve in line should clear it up?

 

[Locke]

Yeah, just make sure the valve you use will crack easily under vacuum, and seal decently against the boost.

http://www.usplastic.com/catalog/va...ory_name=45&product_id=15641&variant_id=64175 would probably work well.

Obviously you will check that the booster functions correctly after the install. If not, the boost may have ruptured the diaphragm, requiring replacement of the booster. (Im sure you know this, I point it out to have complete information for people who have searched this.)

 

[VelocitàPaola]

Locke pretty much has this thread covered. I just wanted to add the obvious solution of replacing the brake booster line with the OEM part. It comes with a built-in check valve and everything...

 

[XMasta19]

Locke pretty much has this thread covered. I just wanted to add the obvious solution of replacing the brake booster line with the OEM part. It comes with a built-in check valve and everything...

+1 for just getting the OEM replacement brake booster hose.

 

[Locke]

The interesting part to that check valve is not all years had them. Basically your lucky to have one, turbo guys can benefit from one in the event you need to brake immediatly when in boost (emergency stop).

Terry

I am the judge, the jury, and the executioner.

Are we sure an OEM replacement hose would come with a check valve? (<-- not rhetorical) He says his '97 did not have a check valve in the hose. What years do?

 

[Defiant]

I'd thought they all do. I don't know why they thought hiding the check valve like that was a good idea.

 

[BLACKpsiECLIPSE]

I picked up an oem brake booster line with the check valve in it.. problem is that I had a tranny problem yesturday... so I really didnt drive it far at all, to see if it worked... thats in my other post... damnnn

 

[XMasta19]

I picked up an oem brake booster line with the check valve in it.. problem is that I had a tranny problem yesturday... so I really didnt drive it far at all, to see if it worked... thats in my other post... damnnn

for OEM replacement ... now to the next problem haha

 

[crensinivon]

This looked like the thread to reopen my new thought in. Why could you not connect your brake booster in front of the turbo so your car is only ever in vacuum? I was thinking one of the lines that fed the charcoal canister would be great for that since I'm still running the OEM hoses. Any thoughts about the relocation?

 

[Locke]

You mean into the intake before the compressor? The filter will likely not be enough of a restriction to create an acceptable level of vacuum - which means little or no power assistance for your brakes.

 

[crensinivon]

Not for a street car, but for Auto cross days when you spend most of your time under boost.
I guess the only way to know for sure would be to test vacuum at the intake and see what it looks like under boost conditions.

Never mind that dumb thought as soon as you take your foot off of the gas pedal you intake switches to vacuum state.

 

[Locke]

And vacuum is stored in the booster for later use. (Even while under boost - if you somehow used the brake without closing the throttle)

As long as the booster and valve are in good shape, you should have no problem, regardless of how you drive it.

 

[Defiant]

My '84 200SX Turbo has a vacuum pump to back up the manifold vacuum.