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installing new proportioning valve
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Xophertony
Rodeo Queen


Joined: 13 Oct 2005
Posts: 5306
Location: Portland, Oregon.

1988 Pontiac GTA

PostPosted: Tue Oct 10, 2006 12:56 am    Post subject: installing new proportioning valve Reply with quote

or trying too. once again i undertake somthing, think i have everything under control and then it all goes horibly wrong Laughing Shocked Sad

http://www.thirdgen.org/propvalve <--THIS is what i tried to do. atfirst i was going to leave my stock combo valve and gut it, and then install the willwood in line. this way i could retain my low pressure warning light. yay good idea right? well it all worked mostly. i gutted the valve and had it all sealed up. then i went to put in the willwood.

problem number one.
our cars use BUBLE fittings stock. these are "only found on german cars" says the old guy at napa. who assurs my that the site on TGO must be wrong. since the guy makes refference to turning your old combo valve into a bong i assume he is right. he was wrong, we have buble fittings.

so i take the line going to the rear of the car from the combo vlave and cut the end off and make it double flare to mate with the willwood valve. ok. no problem. then i take the small lenght of hrdline i bought, slice off one of it's doubleflares and put the other end on the willwood. no biggie. then i take the open end and prepare to re-use the bublefittng on it and place it in the stock combo valve.

problem number two.
it's hardline is too big to go into the fitting. bummer, i head to nappa for a new fitting. they don't sell buble fittings in that size. i buy a smaller one, a different size line and an adapter, i get home and the napa sold me the wrong adapter, i go back, they don't have the right one. so i decide "screw it" and buy all the stuff from the tech article and figure i will replace the combo valve with the "T" fitting like they show.

problem number three.
on all the 1/4" line i can make (what atleast seem like) perfect double flares. but on the "3/16" (in quotes because i think it is some odd size that is slightly larger)i can not make a double flare to save my life. is there some trick to this? they come out lopsided. WTF? i think it is because the brake line on the car is slightly larger. all the other flare fittings fit snugly inside the line, this one is loose. but the next size up is far to large. i am thouroughly confused. but by this time it is dark so i pack it in for the day. i'll get back to it on wednesday. hopefully it will not be raining.

here are some fun photos from my day of brake line hell.

this first shot is of the two fitings on the bottom of the master cylinder. notice the awsome one for the front brakes. and the sucktastic one for the rear (larger hose).


this one is of the buble flare that normally goes to the rear axle from the stock combo valve. it is shown here bent into the position it needs to be in for the new willwood valve. this is before i cut it off. this is mostly here in case anyone says somthing like "they DON'T have bubble falers, you must be wrong.



so if anyone has done somthing like this before and has any additional insight that would help i am all ears. Smile

_________________
86' firebird (Junked in 2015). 88' GTA (sold in 2020).
aaron_sK wrote:
Hell, Tony drove his GTA to Cows a few years back with the pickup coil that came out in pieces.


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iansane
Member


Joined: 16 Jan 2004
Posts: 5742
Location: Bothell

1991 Pontiac Trans Am

PostPosted: Tue Oct 10, 2006 1:08 am    Post subject: Reply with quote

If you use an MC from a 98+ fbody you get the warning light built into the resevoir. I had what you are trying to do with adapters and 90's and random crap for quite awhile and HATED the look of it. I finally just picked up a new MC and it looks a million times better. Plus, it comes with a screw on cap like most new cars.

Only downside I see is that it makes vacuum bleeding from the MC side difficult.


Oh shat, didn't see your PMs. I'm going to hold on to the wheels for now. I don't know what they're worth at all.

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Sometimes I actually think I'm slightly retarded in the mouth.
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Xophertony
Rodeo Queen


Joined: 13 Oct 2005
Posts: 5306
Location: Portland, Oregon.

1988 Pontiac GTA

PostPosted: Tue Oct 10, 2006 8:50 am    Post subject: Reply with quote

RE wheels: cool. keep me updated

RE this stuff:
yeah, i remember you saying somthing about the newer style MC. i am thinking of going that route. a few questions for you.
did you use a new or used MC?
what is "bleeding from the MC side"?
did you have to run all new hardlines?
were you able to doubleflare the existing hardline to the back of the car?
do you have any pictures of how yours is set up? i would love to see it.
does the 98+ MC use DoubleFlares or Bubbleflares ?
did you notice increased braking pressure with the newer style MC?
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iansane
Member


Joined: 16 Jan 2004
Posts: 5742
Location: Bothell

1991 Pontiac Trans Am

PostPosted: Tue Oct 10, 2006 10:19 am    Post subject: Reply with quote

Xophertony wrote:
did you use a new or used MC?
A new one even with my pricing was still $80. I went with a $20 ebay special.

what is "bleeding from the MC side"?
Well whenever I had the stock MC I could just shove a mityvac tube into the orifice at the bottom of the MC and just suck a huge portion of the air out without even pulling the tires off. Made bleeding a lot easier

did you have to run all new hardlines?
No, I trimmed the one to the rear so I could run a wilwood prop valve And a friends broke the front line on the kmember before that so I had that remade in braided as well as the connecting lines from the MC to both the line lock and MC to the prop valve, but that was just because I hate flaring tubing Laughing

were you able to doubleflare the existing hardline to the back of the car?
see previous, didn't even try. But someone with more patience definately could

do you have any pictures of how yours is set up? i would love to see it.
I looked around a bit, thought I had taken some when doing the brake swap but I guess I didn't. I'd say I'll take some when I get the car back but I'm leaving town in a week and won't be back til nearly the end of september.

does the 98+ MC use DoubleFlares or Bubbleflares ?
My stock MC-to-combo-valve short tubes threaded right in so whatever my car used stock. I know they changed thread pattern but did they chang from bubble/double? No idea.

did you notice increased braking pressure with the newer style MC?
I did it the same time I did the 13" swap so anything I felt different about that I would've have noticed. Sorry. I think the only difference is something about a stepped bore to keep pressure up in the rears on 3rdgens? There's some info about it on tgo in a thread about a newer MC swap.
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blue89
Member


Joined: 23 May 2006
Posts: 3482
Location: Bellingham/Eugene

1986 Chevrolet Camaro RS

PostPosted: Tue Oct 10, 2006 11:34 am    Post subject: Reply with quote

Hey Tone, look at my cardomain site, I already did this and went through it all. The easy part is getting the fittings for the MC, the hard part is getting everything for the tee and Prop valve. Want me to explain further what I did?
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86 RS - 7.4L V8 SOLD
89 RS - 3.25L V6 REMOVED
89 RS - 5.7L LT1 SOLD
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Xophertony
Rodeo Queen


Joined: 13 Oct 2005
Posts: 5306
Location: Portland, Oregon.

1988 Pontiac GTA

PostPosted: Tue Oct 10, 2006 10:23 pm    Post subject: Reply with quote

would love more explanation. i am back at it tomorow
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blue89
Member


Joined: 23 May 2006
Posts: 3482
Location: Bellingham/Eugene

1986 Chevrolet Camaro RS

PostPosted: Wed Oct 11, 2006 6:58 am    Post subject: Reply with quote

Once I figured it all out, it was easy.

tee the front lines using adapters and whatever tee you want. They don't get the prop valve at all, so just run it up to the MC. Since you can bring the tee and MC to the store, just ask to run through the fittings bin and get everything you need.



The hard part is getting the PropValve in. Mine had weird metric thread on the valve itself. But I found adapters. I had to cut off the stock 14mm fitting from the line that goes to the rear. Noone has an adapter for this. NOONE! Evil or Very Mad Get the stock rear line setup with the new fitting, use the adapter to the PV. Use the stock little piece to get from the MC down.

So, examine the pic very well, you can see all of the adapters I used. From the top down....

Front
Stock Pipe from MC
3/8 fitting, double flare
Adapters
Tee
Adapters to stock front lines

Rear
Stock Pipe from MC
3/8 fitting, double flare
adapter
Wilwood prop valve
adapter
3/8 fitting, double flare on stock pipe

Done!

_________________
E30
86 RS - 7.4L V8 SOLD
89 RS - 3.25L V6 REMOVED
89 RS - 5.7L LT1 SOLD
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Xophertony
Rodeo Queen


Joined: 13 Oct 2005
Posts: 5306
Location: Portland, Oregon.

1988 Pontiac GTA

PostPosted: Wed Oct 11, 2006 10:37 am    Post subject: Reply with quote

cool. i am gonna try baxters for the adapters. my napa has verry little.
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83Z28BlackBetty
Bam-Ba-Lam


Joined: 13 Mar 2006
Posts: 2083
Location: Aloha

1983 Chevrolet Camaro Z/28

PostPosted: Wed Oct 11, 2006 6:32 pm    Post subject: Reply with quote

GOOD LUCK! let me know what you think, I'll probebly do this if I swap out my rear end.
~JAKE
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Xophertony
Rodeo Queen


Joined: 13 Oct 2005
Posts: 5306
Location: Portland, Oregon.

1988 Pontiac GTA

PostPosted: Wed Oct 11, 2006 7:02 pm    Post subject: Reply with quote

so, i spent from 1PM to 5:20PM in my car driving today. looking for brake line fittings.

knects: "ace has all this stuff"
ACE: "we don't carry brake line fittings, did you try autozone?"
Autozone: "wow... european style to american.. no, good luck, NO one has that"
schucks: "there is no such thing as 'doubleflare', it's called 'standard flare'. you should try Oil Filter Services"
NAPA: yeah.. we don't have that. try Oil filter Services
OILK FILTER SERVICE on 6th and market in portland :
oh, yeah no problem, i'll be right back. 4 minutes and $22 i was on my way. then i get home and descover they forgot to give me / i forgot to get the 10MM bubble female/female adapters, so i turn right around and go back. they gave those to me free since i had to drive all the way back

then i bent all the lines and put it all together. so far only ONE spot leaks. and that is the double flare i did on the line that comes from the willwood and goes to the rear end. gor i hope it is not a bad flare. hopefully it just needs to be tightened down some more.

i would have bled the brakes and driven her home, but i had run out of daylight. so tomorow. took some pictures.

in this first picture you can see the bottom line on the propvalve, this goes back to the rearend. this is where the leak is.


this next one shows the propvalve from the otherside, and realy allows yo to experiance the convoluted mess that is my engine bay Rolling Eyes
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iansane
Member


Joined: 16 Jan 2004
Posts: 5742
Location: Bothell

1991 Pontiac Trans Am

PostPosted: Wed Oct 11, 2006 9:49 pm    Post subject: Reply with quote

Wow.



I thought you were doing all this to keep the idiot light?
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Xophertony
Rodeo Queen


Joined: 13 Oct 2005
Posts: 5306
Location: Portland, Oregon.

1988 Pontiac GTA

PostPosted: Wed Oct 11, 2006 9:56 pm    Post subject: Reply with quote

originally i was gutting th eprop valve to keep the idiot. light. that did not work out so i romoved the whole thing instead. the only way i could get my idiot light back would be to buy a 98+ MC. and that is just not cost effective. i will just have to make sure i never run out of fluid.

had i known about this "oil filter service" place beforehand i could have gutted the prop valve no problem. would not have had to make a single flare either. could have done it all with premade lines. Doh!
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aaron_sK
Member


Joined: 23 Jan 2006
Posts: 8834
Location: Back in beautiful Tacompton

1987 Chevrolet Camaro IROC-Z

PostPosted: Wed Oct 11, 2006 10:01 pm    Post subject: Reply with quote

Oil Filter Service -------------------------> everybody else.

Can't beat them. Wink
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Xophertony
Rodeo Queen


Joined: 13 Oct 2005
Posts: 5306
Location: Portland, Oregon.

1988 Pontiac GTA

PostPosted: Wed Oct 11, 2006 10:03 pm    Post subject: Reply with quote

yeah they kick the ass allright. they can MAKE braided steel lines while you wait.

www.oilfilterserviceco.com
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Dewey316
The Lama


Joined: 08 Jan 2004
Posts: 7295
Location: Bringing the tech

1990 Chevrolet Camaro RS

PostPosted: Wed Oct 11, 2006 10:15 pm    Post subject: Reply with quote

Yup they rock. I had them make some crazy audi high pressure lines for me. I think we got some -AN tee's from them also. Mike may have gotten a few Aeroquip things that summit was going to have to order.
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Twilightoptics
Hardcore (12sec Club)


Joined: 13 Jan 2004
Posts: 9191
Location: Auburn , WA

1987 Chevrolet Camaro IROC-Z

PostPosted: Wed Oct 11, 2006 10:19 pm    Post subject: Reply with quote

I got a few pieces from them too.
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Quasi-Traction
"I have petals"


Joined: 24 Oct 2005
Posts: 3873
Location: stumptown

1986 Chevrolet Camaro Berlinetta

PostPosted: Wed Oct 11, 2006 10:21 pm    Post subject: Reply with quote

huh..........never knew about em...........very handy, I'll have to keep them in mind.
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blue89
Member


Joined: 23 May 2006
Posts: 3482
Location: Bellingham/Eugene

1986 Chevrolet Camaro RS

PostPosted: Thu Oct 12, 2006 7:05 am    Post subject: Reply with quote

yeay! Go tony go! They are fun to play with. I kept turning mine up and down until I got the rear to just barely lock up before the front. It helps with autocross because I can get the car to brake drift. Not exactly good for highway panic stops, but it helps turn the pig in a tight miata course.
_________________
E30
86 RS - 7.4L V8 SOLD
89 RS - 3.25L V6 REMOVED
89 RS - 5.7L LT1 SOLD
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Schultzy89GTA
M.R.A. (11sec Club)


Joined: 08 Jan 2004
Posts: 4417
Location: Gresham, OR

1989 Pontiac GTA

PostPosted: Thu Oct 12, 2006 9:23 am    Post subject: Reply with quote

Didn't even think about them for brake line stuff. Great company though. They have stuff in stock that others can't even order. Good resource for the local folks and they were very professional/courteous as well.

-Schultzy
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Quasi-Traction
"I have petals"


Joined: 24 Oct 2005
Posts: 3873
Location: stumptown

1986 Chevrolet Camaro Berlinetta

PostPosted: Thu Oct 12, 2006 2:23 pm    Post subject: Reply with quote

Glad to hear you got the GTA back Prop Valve in and dialed.

Did you ever get those pictures I asked for of the Third Brake light delete?

paul--if you're going to be at the swap meet on Sat, I can give you that trim piece for the back side of the hatch....

anybody intrested in a power hatch pull down unit? I'm selling it for cheap, since I'm turning the berlinetta into a "slammer" hatch.

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