Brakes not stopping... - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

silentstyle1 · 05-07-2010, 06:23 PM

I checked and couldnt seem to find this problem, i've found other similar problems, but nothing exactly the same as this, so I figured I'd ask.

Ok so the s14 im going to buy just had a z32 brake conversion done on the front. brand new rotors calipers and pads, stock s14 BMC and agency power SS lines. now the problem is that the car has absolutely no braking force... the pedal goes straight to the floor, but if I pump it before coming to a stop it get firm, but then it goes right back to going to the floor. We bled all four brakes for about an hour and there was no change, clear fluid and there are no leaks anywhere.

can somebody help, cause i'm really confused.

I LUV MY S13 · 05-07-2010, 06:24 PM

booster?..

ILL S13 · 05-07-2010, 06:32 PM

Quote:

Originally Posted by I LUV MY S13

booster?..

just like he said same thing happened to me 4 months ago first the booster took a crap then the bmc.

silentstyle1 · 05-07-2010, 06:38 PM

I was thinking that, but the kid im getting the car from put a stock s14 booster and bmc on, why he choose that instead of just going for the z32 idk...

Sileighty_85 · 05-07-2010, 07:01 PM

Booster will make the Pedal STIFF

OP make sure the bleeder valve are on the tops of the calipers, Its a common mistake

silentstyle1 · 05-07-2010, 07:04 PM

I thought that too, but they are all on the top.

Sileighty_85 · 05-07-2010, 07:08 PM

did you bench bleed the master cylinder?

silentstyle1 · 05-07-2010, 07:11 PM

I dont know if he did that yet. Probably not. And I really dont know whats involved in doing that, but I will search to find out how.

If there are any more possible reasons, please continue to post them.

Thanks for everything so far. I knew there was a reason i loved this site.

Sileighty_85 · 05-07-2010, 07:17 PM

if he didnt bench bleed it then thats his problem

silentstyle1 · 05-07-2010, 07:23 PM

Ok I will look into that, when I get the car home tomorrow.

So it wouldn't be the fact that it doesn't have a Z32 bmc?

Sileighty_85 · 05-07-2010, 08:05 PM

Quote:

Originally Posted by silentstyle1

Ok I will look into that, when I get the car home tomorrow.

So it wouldn't be the fact that it doesn't have a Z32 bmc?

Nope I have a Full Z32 Setup on my S13 using the Z31 BMC (S13 Auto BMC)

silentstyle1 · 05-07-2010, 08:07 PM

Ok, thanks for the help. I will bench bleed it when I get it home

lazysk8er2 · 05-07-2010, 08:14 PM

yea also check the seals on the calipers they could be leaking as well front and rear...had that problem couldnt tell my driver side rear caliper was leaking until i took the brakes off and pushed on the seal.

silentstyle1 · 05-07-2010, 08:58 PM

I'll check those as well, if anything it would be the rears, cause the fronts are brand new

silentstyle1 · 05-08-2010, 04:48 PM

Ok, so I picked the car up today. and as soon as I got it home I bled the brakes and booster and the car now stops, pedals a little spongy but it stops good. i guess the kid didn't bleed it right or something. Thanks to everybody who gave me some input, I appreciate it.

Sileighty_85 · 05-08-2010, 05:32 PM

Booster? or Master Cylinder?

Did you remove the MC to bench bleed it?

*fliprayzin240sx* · 05-09-2010, 07:03 AM

Bleed that shit some more, all 4 corners. Start wit the furthest corner from the mastercylinder and work your way to the closest one up front.

Times like this, I love the Hobby Shop for having a vacuum pump...makes bleeding brakelines a 1 man job that takes no more than 10 mins to do all for if its on a car lift.

silentstyle1 · 05-11-2010, 06:35 AM

No it wasnt the MC or the booster. He just didnt bleed them correctly, I bled it a little when I was at his house before i picked it up, and then I went to autozone and bled all four corners, the way that fliprayzin just said, car stopped just fine.

pedal is still a bit spongy but nothing horrible, I have a new mc coming in anyway just to be safe.

05-07-2010, 06:24 PM	#2
I LUV MY S13 Post Whore! Join Date: Dec 2008 Location: Norwalk, Los Angeles Age: 32 Posts: 3,349 Trader Rating: (35) Rides Gallery: I LUV MY S13 Feedback Score: 35 reviews	booster?.. __________________ -Jorge

05-07-2010, 07:01 PM	#5
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	Booster will make the Pedal STIFF OP make sure the bleeder valve are on the tops of the calipers, Its a common mistake __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

05-07-2010, 07:08 PM	#7
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	did you bench bleed the master cylinder? __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

05-07-2010, 07:17 PM	#9
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	if he didnt bench bleed it then thats his problem __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

05-08-2010, 05:32 PM	#16
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	Booster? or Master Cylinder? Did you remove the MC to bench bleed it? __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

05-09-2010, 07:03 AM	#17
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	Bleed that shit some more, all 4 corners. Start wit the furthest corner from the mastercylinder and work your way to the closest one up front. Times like this, I love the Hobby Shop for having a vacuum pump...makes bleeding brakelines a 1 man job that takes no more than 10 mins to do all for if its on a car lift. __________________ If you think Zilvia has too many assholes... CLICK HERE!!!

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