S15 BMC, Will it work? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

DreamN · 05-13-2008, 06:15 PM

Well, I've got a 5 lug conversion and front brakes off an S15 Spec R including the BMC. The brakes are iron 30 mm pretty much identical to the Z32 ones, but the rear brakes as I understood were the same for s13, s14, and the S15.

I wanted to get the S15 BMC because I figured it would be a step up from stock and would help out when swapping to the bigger brakes. Now I'm wondering if installing the thing is even possible. The lines connect on the opposite side and I only see fittings for two lines rather than 3 like on the stock s13 BMC.

Anyone have any idea if I can actually run it or not? Any help will be greatly appreciated. Thanks.

Sileighty_85 · 05-13-2008, 07:05 PM

stock S13 is fine, if you have an S13 Auto BMC works great
If not get one off a Z31

DreamN · 05-13-2008, 07:12 PM

Yeah, my car used to be auto before. Are there actually differences between the auto and manual BMCs?

I'd still like to know if I'd be able to run the S15 one though.

Sileighty_85 · 05-13-2008, 07:15 PM

Auto has a bigger bore size close to the Z32 BMC but with a better Bias for the S13.

Im running a Manual BMC with my R-33 calipers stops on a dime

Char · 05-14-2008, 12:17 PM

What would be the next step up from the Auto BMC? Or would it be best to stay with the Auto one because of the bias? Just curious.

Sileighty_85 · 05-14-2008, 12:37 PM

the Auto BMC is pretty much the best/easiest choice,
You can use the 300ZX BMC but you have to modify it.

Dousan_PG · 05-14-2008, 12:53 PM

its RHD
you have to modify or make new lines to make it work
unless your car is already RHD.

id get a new Z32 and be done
life is easy.

DreamN · 05-14-2008, 03:53 PM

^ Pretty much what I'm thinking of doing and just throwing the S15 one on eBay.

For the moment I'll just stick to the stock auto one seeing that's it's pretty beefy according to Sileighy_85. Then I'll just buy the Z32 one.

g6civcx · 05-14-2008, 03:55 PM

Make custom braided lines. 2 ports = ABS. I'm not sure if you can mod the S15 BMC to insert a 3rd port.

I would sell and do Z32 as well.

DreamN · 05-14-2008, 03:58 PM

yeah, sounds like to much of a hassle. thanks for all the replies.

05-13-2008, 06:15 PM	#1
DreamN Post Whore! Join Date: Nov 2006 Location: SoCal - 818 Age: 36 Posts: 10,691 Trader Rating: (54) Rides Gallery: DreamN Feedback Score: 54 reviews	S15 BMC, Will it work? Well, I've got a 5 lug conversion and front brakes off an S15 Spec R including the BMC. The brakes are iron 30 mm pretty much identical to the Z32 ones, but the rear brakes as I understood were the same for s13, s14, and the S15. I wanted to get the S15 BMC because I figured it would be a step up from stock and would help out when swapping to the bigger brakes. Now I'm wondering if installing the thing is even possible. The lines connect on the opposite side and I only see fittings for two lines rather than 3 like on the stock s13 BMC. Anyone have any idea if I can actually run it or not? Any help will be greatly appreciated. Thanks. __________________ - Jimmy Wanted: TBD For Sale: TBD

05-13-2008, 07:05 PM	#2
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	stock S13 is fine, if you have an S13 Auto BMC works great If not get one off a Z31 __________________ 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

05-13-2008, 07:12 PM	#3
DreamN Post Whore! Join Date: Nov 2006 Location: SoCal - 818 Age: 36 Posts: 10,691 Trader Rating: (54) Rides Gallery: DreamN Feedback Score: 54 reviews	Yeah, my car used to be auto before. Are there actually differences between the auto and manual BMCs? I'd still like to know if I'd be able to run the S15 one though. __________________ - Jimmy Wanted: TBD For Sale: TBD

05-13-2008, 07:15 PM	#4
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	Auto has a bigger bore size close to the Z32 BMC but with a better Bias for the S13. Im running a Manual BMC with my R-33 calipers stops on a dime __________________ 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

05-14-2008, 12:37 PM	#6
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	the Auto BMC is pretty much the best/easiest choice, You can use the 300ZX BMC but you have to modify 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

05-14-2008, 12:17 PM	#5
Char Leaky Injector Join Date: May 2008 Location: PA Age: 37 Posts: 53 Trader Rating: (0) Feedback Score: 0 reviews	What would be the next step up from the Auto BMC? Or would it be best to stay with the Auto one because of the bias? Just curious.

05-14-2008, 12:53 PM	#7
Dousan_PG Post Whore! Join Date: May 2002 Location: Orange County, California Age: 42 Posts: 16,640 Trader Rating: (23) Rides Gallery: Dousan_PG Feedback Score: 23 reviews	its RHD you have to modify or make new lines to make it work unless your car is already RHD. id get a new Z32 and be done life is easy. __________________ Aaron Pink GodziRa www.geocities.com/pink_godzira

05-14-2008, 03:53 PM	#8
DreamN Post Whore! Join Date: Nov 2006 Location: SoCal - 818 Age: 36 Posts: 10,691 Trader Rating: (54) Rides Gallery: DreamN Feedback Score: 54 reviews	^ Pretty much what I'm thinking of doing and just throwing the S15 one on eBay. For the moment I'll just stick to the stock auto one seeing that's it's pretty beefy according to Sileighy_85. Then I'll just buy the Z32 one. __________________ - Jimmy Wanted: TBD For Sale: TBD

05-14-2008, 03:55 PM	#9
g6civcx Post Whore! Join Date: Apr 2004 Location: Virginia, USA Posts: 5,764 Trader Rating: (5) Feedback Score: 5 reviews	Make custom braided lines. 2 ports = ABS. I'm not sure if you can mod the S15 BMC to insert a 3rd port. I would sell and do Z32 as well.

05-14-2008, 03:58 PM	#10
DreamN Post Whore! Join Date: Nov 2006 Location: SoCal - 818 Age: 36 Posts: 10,691 Trader Rating: (54) Rides Gallery: DreamN Feedback Score: 54 reviews	yeah, sounds like to much of a hassle. thanks for all the replies. __________________ - Jimmy Wanted: TBD For Sale: TBD

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