Rear brake line/fitting leaking , please help... - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

l8nightjay · 12-17-2009, 11:46 AM

I just finished doing my 300zx brake conversion f&r with ebrake. Everything so far has gone smooth, but where the rear passenger brake line bolts to the caliper is leaking. Calipers just got rebuilt and the rest all seem fine. I have the rear lines tightened down good, but both the lines still swivel around the hardware. I'm thinking maybe the washers are to small, or the hardware isn't screwing down far enough; bad nut or overspray I didn't notice from powdercoating...
Anything like this happen to someone else? Searched with no luck, really don't wanna have to buy new rear conversion lines again.

godrifttoday · 12-17-2009, 12:42 PM

Maybe u need new washers and does The bolt thread nicely in? Or did u force it in?

brian3676 · 12-17-2009, 12:52 PM

What lines did u use?

l8nightjay · 12-17-2009, 07:39 PM

gdtoday- They threaded in fine, I thought the bolts might be to long or clogged the threads on inside from the coating. leaks right where the lines bolt to the rear caliper.

brian3676- I bought the lines like 6-9 month ago and cant quite remember, I wanna so circuit sports, or project silvia... Both sound about right lol.

Devens240 · 12-17-2009, 08:51 PM

did you use Teflon tape on the fittings? and you dont have to screw them in very hard... remember the Z32 rears are aluminum.

Sileighty_85 · 12-17-2009, 09:08 PM

so your using Banjo Bolts???

the 300ZX use flaired fittings not banjo bolts

l8nightjay · 12-18-2009, 01:44 PM

No didn't use any Teflon tape, that might be my quick fix but still kinda worried on longevity. Yeah I didn't torque them very hard, just wrenched tight and left them like that, I've had a bad experience once with aluminum and cross-threading.... not fun.. wont be doing that anytime soon.lol

Sileighty- yeah the fronts are flared fittings but the rears have banjo bolts. Or at least that's the way these conversion lines came.

I'm thinking I'll just go pull the passenger rear bolt and washers off and head down to the local auto store and see if they have new 300zx bolts, or even shorter ones. I'll didn't tighten the rears very tight, but the rear washers might be no good for any further use, I thought about stacking two washers on the bottom instead of one, but don't really think that'll be the best decision.

Sileighty_85 · 12-18-2009, 09:56 PM

the rears are also flared fittings, you must have been sent a set of lines for the stock calipers,

l8nightjay · 12-20-2009, 03:59 PM

damn I guess there's no way around it, I received the wrong rears and gotta buy another set. At least I wont worry about leaks, I also kinda thought there wasn't much cable length either for the rears, seams like to much suspension movement and the cable would be taunt.
thanks for the help Sileighty

12-17-2009, 11:46 AM	#1
l8nightjay Leaky Injector Join Date: Aug 2006 Location: Eugene, Oregon Age: 41 Posts: 98 Trader Rating: (0) Feedback Score: 0 reviews	Rear brake line/fitting leaking , please help... I just finished doing my 300zx brake conversion f&r with ebrake. Everything so far has gone smooth, but where the rear passenger brake line bolts to the caliper is leaking. Calipers just got rebuilt and the rest all seem fine. I have the rear lines tightened down good, but both the lines still swivel around the hardware. I'm thinking maybe the washers are to small, or the hardware isn't screwing down far enough; bad nut or overspray I didn't notice from powdercoating... Anything like this happen to someone else? Searched with no luck, really don't wanna have to buy new rear conversion lines again.

12-17-2009, 09:08 PM	#6
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	so your using Banjo Bolts??? the 300ZX use flaired fittings not banjo bolts __________________ 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

12-18-2009, 09:56 PM	#8
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	the rears are also flared fittings, you must have been sent a set of lines for the stock calipers, __________________ 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

12-17-2009, 12:42 PM	#2
godrifttoday Post Whore! Join Date: Jan 2004 Location: los angeles Age: 40 Posts: 3,120 Trader Rating: (82) Feedback Score: 82 reviews	Maybe u need new washers and does The bolt thread nicely in? Or did u force it in?

12-17-2009, 12:52 PM	#3
brian3676 Zilvia Member Join Date: Oct 2006 Location: portland Age: 36 Posts: 205 Trader Rating: (3) Feedback Score: 3 reviews	What lines did u use?

12-17-2009, 07:39 PM	#4
l8nightjay Leaky Injector Join Date: Aug 2006 Location: Eugene, Oregon Age: 41 Posts: 98 Trader Rating: (0) Feedback Score: 0 reviews	gdtoday- They threaded in fine, I thought the bolts might be to long or clogged the threads on inside from the coating. leaks right where the lines bolt to the rear caliper. brian3676- I bought the lines like 6-9 month ago and cant quite remember, I wanna so circuit sports, or project silvia... Both sound about right lol.

12-17-2009, 08:51 PM	#5
Devens240 Zilvia Junkie Join Date: Dec 2007 Location: Washington Age: 35 Posts: 413 Trader Rating: (1) Feedback Score: 1 reviews	did you use Teflon tape on the fittings? and you dont have to screw them in very hard... remember the Z32 rears are aluminum.

12-18-2009, 01:44 PM	#7
l8nightjay Leaky Injector Join Date: Aug 2006 Location: Eugene, Oregon Age: 41 Posts: 98 Trader Rating: (0) Feedback Score: 0 reviews	No didn't use any Teflon tape, that might be my quick fix but still kinda worried on longevity. Yeah I didn't torque them very hard, just wrenched tight and left them like that, I've had a bad experience once with aluminum and cross-threading.... not fun.. wont be doing that anytime soon.lol Sileighty- yeah the fronts are flared fittings but the rears have banjo bolts. Or at least that's the way these conversion lines came. I'm thinking I'll just go pull the passenger rear bolt and washers off and head down to the local auto store and see if they have new 300zx bolts, or even shorter ones. I'll didn't tighten the rears very tight, but the rear washers might be no good for any further use, I thought about stacking two washers on the bottom instead of one, but don't really think that'll be the best decision.

12-20-2009, 03:59 PM	#9
l8nightjay Leaky Injector Join Date: Aug 2006 Location: Eugene, Oregon Age: 41 Posts: 98 Trader Rating: (0) Feedback Score: 0 reviews	damn I guess there's no way around it, I received the wrong rears and gotta buy another set. At least I wont worry about leaks, I also kinda thought there wasn't much cable length either for the rears, seams like to much suspension movement and the cable would be taunt. thanks for the help Sileighty