4/2pot install problem

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Airgne
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4/2pot install problem

Post by Airgne » Thu Aug 20, 2009 2:55 pm

so i have bleed the car about 30 times. have vacuum bleed it 5 times. changed the booster and master cylinder. als have line bleed the master, abs pump and proportioning vavle. the car still will not hold pedal pressure.

did anyone have to change there master cylinder to the master to the wrx master or booster?


tonight be are goin to turn on the abs pump and bleed it to see.
1997 Nissan Laurel ClubS25t
2001 Legacy Gt Ltd(167awhp&165.7awtq)Best 00-04 Legacy at WCSS11(West Coast Subaru Show)
1992 Legacy SS(Sold)
1991 Legacy L Wagon(Sold)(400,000+miles and running strong!!)

n2x4
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Post by n2x4 » Thu Aug 20, 2009 3:37 pm

Did you install the brakes on the correct side? Easy way to tell - what way is the bleeder pointing, up or down?
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Airgne
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Post by Airgne » Thu Aug 20, 2009 3:40 pm

bleeders on the front are up.
1997 Nissan Laurel ClubS25t
2001 Legacy Gt Ltd(167awhp&165.7awtq)Best 00-04 Legacy at WCSS11(West Coast Subaru Show)
1992 Legacy SS(Sold)
1991 Legacy L Wagon(Sold)(400,000+miles and running strong!!)

n2x4
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Post by n2x4 » Thu Aug 20, 2009 4:13 pm

Well there goes that theory....
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PhyrraM
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Post by PhyrraM » Thu Aug 20, 2009 8:38 pm

Does it get hard and then "go away"? Or does it never pump up?

If you never get a firm pedal, then it may still be air in the system. It could also be something flexing, like lines, pads, brakets, etc. Make sure everything is straight, lined up and tight.

If you do get a firm pedal and then it softens up, it can really only be either a leak (that you woulde eventually see) or a bad master cylinder. Are you losing fluid after repeated pumps?
'93 Winestone SS Auto, '91 Pearl White SS.
'93 Pure White SS EJ20G slanty intercooled, SIDESWIPED! In stasis.
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Airgne
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Post by Airgne » Thu Aug 20, 2009 9:33 pm

gets firm then goes away. not loosing fluid at all. change masters and same thing.
1997 Nissan Laurel ClubS25t
2001 Legacy Gt Ltd(167awhp&165.7awtq)Best 00-04 Legacy at WCSS11(West Coast Subaru Show)
1992 Legacy SS(Sold)
1991 Legacy L Wagon(Sold)(400,000+miles and running strong!!)

Airgne
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Post by Airgne » Thu Aug 20, 2009 9:34 pm

do the rear bleeders have to be in the up the down postion?
1997 Nissan Laurel ClubS25t
2001 Legacy Gt Ltd(167awhp&165.7awtq)Best 00-04 Legacy at WCSS11(West Coast Subaru Show)
1992 Legacy SS(Sold)
1991 Legacy L Wagon(Sold)(400,000+miles and running strong!!)

PhyrraM
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Post by PhyrraM » Thu Aug 20, 2009 9:39 pm

Bleeders are always on the top of the caliper.

Pics inbound.....
'93 Winestone SS Auto, '91 Pearl White SS.
'93 Pure White SS EJ20G slanty intercooled, SIDESWIPED! In stasis.
'94 FWD and '95 AWD Laguna Blue SVXs.
2017 Pure Red BRZ Limited w/Performance pack

Airgne
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Post by Airgne » Thu Aug 20, 2009 9:47 pm

^^hmmm
1997 Nissan Laurel ClubS25t
2001 Legacy Gt Ltd(167awhp&165.7awtq)Best 00-04 Legacy at WCSS11(West Coast Subaru Show)
1992 Legacy SS(Sold)
1991 Legacy L Wagon(Sold)(400,000+miles and running strong!!)

PhyrraM
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Post by PhyrraM » Thu Aug 20, 2009 10:06 pm

Image

When I did my 4pot/2pot conversion I didn't think the brakes felt that good either. They DID get to the point of not going to the floor, but they felt mushy. Like there was still air in the system.

I used the ATE blue fluid so I could tell when the old stuff was flushed out. I used the hand-pump vaccuum bleeder kits and sucked it out for a long time. I was confident there was no air in the system, but I still didn't like the feel.

I very cautiously took it out for a spin and the car stopped fine. Still felt a little off, but stopped fine. Just for reassurance, took it to a local garage and asked them to bleed the brakes. They used the 'one guy on the pedal-one guy open the bleeder' method. They said they got a little more air out, but I'm not convinced....whatever. Brakes felt the same.

As I drove it around more over the next few days, the pads set in and the pedal developed a bit more feedback, but I still felt unhappy with my "upgrade".

BUT.....

A few days later I took my (stock) WRX out. When the Legacy had the stock brakes, the WRX was noticably better. Both in performance and feel. But after a few days with the 4pot/2pots in the Legacy, going back to the WRX was a noticable downgrade! I must have been expecting in my mind this "big improvement" and gotten so focused on the apparently soft pedal, that I didn't realize the overall improvement until I had a back-to-back comparision.

I'm not saying that is the problem you are having, but it's something to keep in mind. If your pedal gets hard and then "bleeds off" to the floor, something is wrong. Mine never went to the floor, just 'felt' mushy.
'93 Winestone SS Auto, '91 Pearl White SS.
'93 Pure White SS EJ20G slanty intercooled, SIDESWIPED! In stasis.
'94 FWD and '95 AWD Laguna Blue SVXs.
2017 Pure Red BRZ Limited w/Performance pack

Airgne
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Post by Airgne » Fri Aug 21, 2009 4:33 am

well it was the rear bleeders were on the bottom and not the top. so note all bleeders go up.
1997 Nissan Laurel ClubS25t
2001 Legacy Gt Ltd(167awhp&165.7awtq)Best 00-04 Legacy at WCSS11(West Coast Subaru Show)
1992 Legacy SS(Sold)
1991 Legacy L Wagon(Sold)(400,000+miles and running strong!!)

SILINC3R
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Post by SILINC3R » Fri Aug 21, 2009 5:51 am

so is it all good?
Tony
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Post by ericem » Fri Aug 21, 2009 6:30 am

yup!
1993 Subaru Legacy L AWD Wagon R.I.P
1994 Subaru Legacy SS R.I.P :(
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2007 Subaru Legacy GT :)

Airgne
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Post by Airgne » Fri Aug 21, 2009 2:42 pm

car stops like a dream. pedal moves maybe 1/2in and the car is almost complete stopped.
1997 Nissan Laurel ClubS25t
2001 Legacy Gt Ltd(167awhp&165.7awtq)Best 00-04 Legacy at WCSS11(West Coast Subaru Show)
1992 Legacy SS(Sold)
1991 Legacy L Wagon(Sold)(400,000+miles and running strong!!)

n2x4
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Post by n2x4 » Fri Aug 21, 2009 5:19 pm

Yey!
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BXSS
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Post by BXSS » Fri Aug 21, 2009 7:14 pm

n2x4 wrote:Yey!
Your theory was correct!
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Airgne
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Post by Airgne » Fri Aug 21, 2009 7:46 pm

n2x4 wrote:Yey!
he didnt ask about the rear. :-D
1997 Nissan Laurel ClubS25t
2001 Legacy Gt Ltd(167awhp&165.7awtq)Best 00-04 Legacy at WCSS11(West Coast Subaru Show)
1992 Legacy SS(Sold)
1991 Legacy L Wagon(Sold)(400,000+miles and running strong!!)

n2x4
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Post by n2x4 » Fri Aug 21, 2009 9:17 pm

Airgne wrote:
n2x4 wrote:Yey!
he didnt ask about the rear. :-D
Yeah, I lose :(
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