2G Help!! Brake booster hose/line

[TheGreatGSX]

During the installation of my turbo/FIC/etc my brake booster hose was dry rotted and upon taking it off, the SOB broke. No big deal as I said since I was ordering some parts from the Mitsu dealership anyways.

As I went to pick up my parts yesterday, I find out that the part is "Obsolete" and they cannot order it. I checked at Advanced, Napa, Auto Zone, and even a custom parts store that make parts for you (Hoses, pipes, etc.) and they've all said the same thing "This hose is specially made and although we can make something for you, we'd be afraid it wouldn't be as durable as the OEM."

I don't have much options for a junkyard, I did call my local junkyard and they have said they "think" they have a couple of GSX's laying around, and as professional as they are I asked for there hours of operation and they said "I don't know, you'll have to call, sometimes we're here, sometimes we're not." And I hate doing business with unprofessional people and really don't want to wait for when "they'll be there".

I read on another thread that Pep Boys carry this part and wanted to confirm because Pep Boys is an hour and a half drive for me and I'm not sure they were talking about the same part, they had said the part from Mitsu was only like $8.00, the part I'm talking about is $80.00 from Mitsu. Any advice or direction would be greatly appreciated (Sorry for the book )

Edit:
The hose connects from the brake booster, it's a very thick hose with a plastic peice(s) inside that I am told controls the air pressure going through the hose.

 

[turbosax2]

The part number is MB895885, and is about $12 from JNZ. If the dealership quoted you at $80 for the hose then maybe there was a miscommunication about which part you needed. I would give JNZ a call just to have them verify the part is actually discontinued.

 

[TheGreatGSX]

The part number is MB895885, and is about $12 from JNZ. If the dealership quoted you at $80 for the hose then maybe there was a miscommunication about which part you needed. I would give JNZ a call just to have them verify the part is actually discontinued.

My whole experience at Mitsu was a big miscommunication, but you don't want to hear about my 2 hour visit to Mitsu ordering only 5 parts because the parts guy was a complete moron and didn't know what a turbo oil feed line was. WTF

I will check out JNZ, that was about the only other place I haven't checked yet, thanks!

Just to make sure we're talking about the same one, this is the one I am talking about. (Although I am thinking this is a different year, because mine is bent a little differently but the thickness is the same, and it also has "<- ENGINE" labeled on it so you know which way the hose goes)

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[toybreaker]

Please note that the brake booster check valve is installed inline inside that hose. (that's why it's 80 bucks from the dealer)

Simply running a hose over to the booster without finding a way to install the booster check valve inside your new hose will cause you some problems.

No vaccum will be retained in the booster, leading to lack of power assist under any conditions except trailing throttle.

It will also expose the booster diaphragm to boost, and that may damage the diaphragm, requiring you to replace the booster assembly.

If you can't get a new hose from the dealer (with the valve pre-installed) time/cost effectively, your best bet is to score a used one from your local salvage yard.

I would reccomend against driving the car untill you address this issue.

 

[turbosax2]

Yes, the hose in the picture above is what I gave you the part number for.

 

[Calan]

I made my own with one of the $1.49 US Plastics check valves and some 3/8" hose. It's working great for me but YMMV... and do it at your own risk.

http://www.dsmtuners.com/forums/blo...omplete-rebuild-firewall-forward-part-16.html (bottom of page)

 

[TheGreatGSX]

Please note that the brake booster check valve is installed inline inside that hose. (that's why it's 80 bucks from the dealer)

Simply running a hose over to the booster without finding a way to install the booster check valve inside your new hose will cause you some problems.

No vaccum will be retained in the booster, leading to lack of power assist under any conditions except trailing throttle.

It will also expose the booster diaphragm to boost, and that may damage the diaphragm, requiring you to replace the booster assembly.

If you can't get a new hose from the dealer (with the valve pre-installed) time/cost effectively, your best bet is to score a used one from your local salvage yard.

I would reccomend against driving the car untill you address this issue.

I am not driving the car, and the booster check valve also got damaged when removing the hose (A corner of it got chipped), does the one from JNZ include the check valve?

And thanks Calan, but I don't think I have the balls to make my own

Edit:
I just wanted to say again that I attempted to order the part from the dealer with the booster check valve and they had told me the part was "Obsolete" and they could not order it.

 

[turbosax2]

The OEM piece should have the check valve preinstalled in the hose.

 

[TheGreatGSX]

Ok, the part isn't manufactured by anyone anymore. I've called every junkyard within a 100 mile radius, nothing.

Can I use one from a 1g or a galant? Or what about from a 2g N/T?

 

[Calan]

Why are you starting another thread? Call Mitsu and have them cross reference the P/N that Eric gave you in your original thread.

 

[snowborder714]

According to CAPS, the part number is just the same for 2g GST, GSX, and Spyder models.

By "not manufactured by anyone" do you mean you tried to get it brand new from an OEM parts dealer? The part number is MB895885 if you didn't know so already.

 

[Red97Eclipseboy]

Or just go to the parts store and grab hose that's the proper diamter and length. That could be tough, though!

 

[snowborder714]

The OEM brake booster hose has a built in check valve, so you can't just use any regular vacuum hose.

Merged with original thread.

 

[Calan]

I just checked with a local Mitsu buddy and that part is indeed no longer available. But...

Here are a couple more that may work for you, from the 3000GT:

MB668251 - Shorter hose from the NT, but does apparently include the check valve
MB857312 - Longer hose with check valve that may be adaptable.

See if you can find someone with one of these in stock, or check the salvage yards. Get one in hand and compare yours to them.

**********

As long as the check valve has a high enough PSI rating and a low enough crack pressure, and can tolerate engine bay conditions (the $1.49 check valve from US Plastics meets all of these requirements)...it's really not that big a deal to make your own. Be sure to use good thick-walled FI hose and clamps, and orient the check valve the right way, and it should work as well or better than a factory replacement. I trust the one I made much more than I would one that is 15-20 years old from a junkyard.


EDIT:

That first number came from my Mitsu friend, but I can't verify it. WinCAPS is fighting with me, but I get MB857311 and 312.

Here is a pic of the two hoses. Maybe Brian can shed some more light on how compatible they would be, since I'm not a 2G guy. The hose labeled 54154D (which I think is MB857312) looks like it would be long enough to be modified and made to fit.

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[Shadow21]

You can go snag one off of the 7th generation galant. Its the same hose and it does have the check valve installed. The bends may be slightly different but im almost sure they are identical. I own a 7g and have built my gf's 2g. I actually had a problem with her brake booster hose because dirt dobbers got inside of the hose and made a damn nest when we had the motor out of the car to build it .. Anyways 94-98 is the year galant youre looking for.

 

[rich3389]

I pulled a few off 2g n/t's. Appears to be the same exact thing with the check valve and everything.

 

[Red97Eclipseboy]

The OEM brake booster hose has a built in check valve, so you can't just use any regular vacuum hose.

Merged with original thread.

Yeah, I know. I swapped it over. It works. So you can.

 

[TheGreatGSX]

Why are you starting another thread? Call Mitsu and have them cross reference the P/N that Eric gave you in your original thread.

Sorry, I was out running errands and made a new thread on my cell hoping I could get an answer while I was out. Mitsu has been trying to cross reference the P/N for 4 days now...I kind of need the part to get my car back on the road...Don't make me tell you about my 2 hour trip there ordering a whopping 3 parts because the guy didn't know the difference between a 97 GSX and a 94 GSX.

According to CAPS, the part number is just the same for 2g GST, GSX, and Spyder models.

By "not manufactured by anyone" do you mean you tried to get it brand new from an OEM parts dealer? The part number is MB895885 if you didn't know so already.

Yes, like I said before, the part is considered "OBSOLETE" and they do not manufacture it anymore and there is only one place that has 1 in stock but apparently they cannot find it.

I just checked with a local Mitsu buddy and that part is indeed no longer available. But...

Here are a couple more that may work for you, from the 3000GT:

MB668251 - Shorter hose from the NT, but does apparently include the check valve
MB857312 - Longer hose with check valve that may be adaptable.

See if you can find someone with one of these in stock, or check the salvage yards. Get one in hand and compare yours to them.

What do you mean exactly by "Adaptable"?

The problem with the salvage yards in this area, they only have fords or chevys. I've been to several in this area and saw no DSM's exept one 95 Eagle Talon N/T. I looked under the hood and saw what I thought was the brake booster hose but it was very short.

The guy at Mitsu is suppose to be checking to see what else would work for me but I've lost all my patience with him, he such a pain to deal with because he knows nothing.

Or just go to the parts store and grab hose that's the proper diamter and length. That could be tough, though!

I've already been to the parts store, and have nothing that is thick enough.

I pulled a few off 2g n/t's. Appears to be the same exact thing with the check valve and everything.

Could you possibly get me a pic, I had a hard time locating it in a n/t??

You can go snag one off of the 7th generation galant. Its the same hose and it does have the check valve installed. The bends may be slightly different but im almost sure they are identical. I own a 7g and have built my gf's 2g. I actually had a problem with her brake booster hose because dirt dobbers got inside of the hose and made a damn nest when we had the motor out of the car to build it .. Anyways 94-98 is the year galant youre looking for.

Hmmm I will definitely check into this.

And thanks to everyone attempting to help a desperate noob out!

 

[Calan]

What do you mean exactly by "Adaptable"?

As in... buy that part from Mitsu (if you insist on going the expensive route), and cut it to fit.

I've already been to the parts store, and have nothing that is thick enough.

Ehhh...I think you need to find a new parts store.

All you need is the check valve (which you can remove from your existing rotted hose if you must), and a piece of quality hose that is approximately 3/8" ID with about a 1/8" wall thickness, that can hold your max boost +20 psi or so for a safety factor. A piece of good heater hose or large fuel injection hose should work just fine.

If you go with a check valve like the US Plastics one (which I would recommend over an old factory one), you'll also need a couple of decent hose clamps to hold the check valve in place of course.

****

I think you're a bit paranoid and over-analyzing this. It is important that it is done correctly for safety's sake, but it's still just a hose with a simple check valve (to keep from pressurizing the booster when you press the go pedal).

 

[snowborder714]

IHere are a couple more that may work for you, from the 3000GT:

MB668251 - Shorter hose from the NT, but does apparently include the check valve
MB857312 - Longer hose with check valve that may be adaptable.

According to CAPS, they both only came on the 3KGT platform. The first one does not have a note of having a valve, while the second one does.


If you go the "make your own" route, ask for fuel line instead of vacuum tubing. It'd be more along the lines of what Craig is referring to.

 

[rich3389]

I have also just cut the check valve out of the stock hose, and pushed it into a hose bought at the part store...

 

[97gst_spyder]

I used 3/8ths blue pushlock and a usplastics check valve...No issues

 

[Calan]

According to CAPS, they both only came on the 3KGT platform. The first one does not have a note of having a valve, while the second one does.

Yeah I noticed that too...my Mitsu guy said that the N/T hose did actually have the check valve also, but he could be mistaken.

If you go the "make your own" route, ask for fuel line instead of vacuum tubing. It'd be more along the lines of what Craig is referring to.

Good point...I probably should have spelled it out. "Large FI hose" = large fuel injection hose.

Fixed

To expand on what Brian and I meant for those that don't know this....fuel injection hose has some of the highest pressure ratings of any automotive hose. So if you ever need stiff high-pressure hose for other uses, "FI" hose is usually a good choice.

 

[TheGreatGSX]

As in... buy that part from Mitsu (if you insist on going the expensive route), and cut it to fit.




Ehhh...I think you need to find a new parts store.

I don't insist on going the expensive route, but I'd rather be safe than sorry, when it comes to making things and "rigging" things I've never had good luck.

yeah, unfortunately I only have 2 options in this area, Advanced Auto and Napa, but like I said this is a heavy Confederate area where most people have Fords, Chevys, or Harleys. I did goto a custom store though and even they were afraid to attempt to make me one to replace the stock one.

All you need is the check valve (which you can remove from your existing rotted hose if you must), and a piece of quality hose that is approximately 3/8" ID with about a 1/8" wall thickness, that can hold your max boost +20 psi or so for a safety factor. A piece of good heater hose or large fuel injection hose should work just fine. And a couple of decent hose clamps to hold the check valve in place of course.

The hose snapped right where the check valve was at, we cut the remaining hose off which sliced the check valve pretty much in half

I think you're a bit paranoid and over-analyzing this. It is important that it is done correctly for safety's sake, but it's still just a hose with a simple check valve (to keep from pressurizing the booster when you press the go pedal).

I may be, but it's my baby damn it and after dropping down a grand on her I want her to run right and not have to put more money into her
And the "go pedal" was uncalled for.

And I will keep the Large FI hose in mind in case I do decide to make my own which I have a feeling I will. Hell Calan, if you want make me one and tell me how much I owe you At least someone experienced with these things that go Vroooom will be putting it together instead of a newb

 

[Calan]

I don't insist on going the expensive route, but I'd rather be safe than sorry....I may be, but it's my baby damn it and after dropping down a grand on her I want her to run right and not have to put more money into her

I can totally respect that... and wish a grand was even a tenth of what I've spent on mine (so far).

And the "go pedal" was uncalled for.

Ehhh... not sure what that means. "Go pedal" is just a goofy old slang term for accelerator.

Hell Calan, if you want make me one and tell me how much I owe you At least someone experienced with these things that go Vroooom will be putting it together instead of a newb

Ain't gonna happen man. I would totally trust it, but for all I know you might get all liquored up and sideways when you install it and end up killing someone. I don't need that kind of liability.

If you can push a hose on a barb nipple, you can make one. It's only marginally more difficult than walking and chewing gum at the same time.