RB25 in a S13 with KA AC coompressor - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Boostin240sx · 03-26-2011, 05:50 PM

I've seen multiple threads about keeping AC with an RB25 swap and they usually involve the skyline compressor and custom lines and such. I figured I'd offer up these pics to help someone make a cheaper decision that doesn't involve recharging the system. When removing the KA I left the lines hooked up and wired the compressor off to the side. I made these bracket adapters to use the KA bracket with a piece of 1" and 0.375" aluminum. I missed drilled one of the threaded holes but 3 bolts will be enough to hold the bracket on there. We'll see how much room we have between the frame rail and compressor tomorrow when I get the engine in.

Hope this helps someone...

marshallpre1 · 03-26-2011, 06:03 PM

Nice post. Will be looking to do this if I don't end up selling my car.

Jturbo · 03-26-2011, 06:24 PM

ac makes your engine weak.....

Sileighty_85 · 03-26-2011, 07:45 PM

So how are you gonna make the A/C lines reach since the RB positions the Compressor 6-8in forward?

Boostin240sx · 03-26-2011, 07:55 PM

Quote:

Originally Posted by Jturbo

ac makes your engine weak.....

You live in Minnesota, you don't have a clue what it is like to live in 90 to 100 degree days for two months a year.

As for the AC compressor placement 6 - 8 inches forward, that part may be slightly dicey but I'm going to cross that bridge tomorrow if it doesn't rain all day and I can get the engine in. My turbo is top mounted with a custom DP so I may have little wiggle room.

Worst case scenario here I save myself from trying to find the RB bracket and compressor since my engine didn't have one and I have to extend one maybe two lines. And of course get it recharged.

Sileighty_85 · 03-26-2011, 08:00 PM

I'll tell ya now the KA Lines wont reach (maybe if you stretch the shit out of it but I dont think it will reach still), Im in the process of putting the A/C back in mine,
I'm using the modded RB LP line and either a custom HP line or the Modified KA one. well see monday

tx240ss · 03-27-2011, 04:53 PM

That looks like it would work on my s13 with sr and using a ka compressor... how much to make me one??

codyace used to make these and he's disappeared... here's a picture of his

altalti · 03-27-2011, 06:10 PM

This man knows his stuff. If for some reason you have to recharge give me a shout. You have my number and I can probably bring the freon and gauges to do it. Thanks again you are a smart cookie when it comes to this stuff.

Boostin240sx · 03-28-2011, 05:57 AM

Quote:

Originally Posted by altalti

This man knows his stuff. If for some reason you have to recharge give me a shout. You have my number and I can probably bring the freon and gauges to do it. Thanks again you are a smart cookie when it comes to this stuff.

Thanks man, hopefully I got this thing licked.

I did some rearranging as the line comes out of the firewall and may have gained the extra length needed. The compressor can almost touch the condenser after messing with it, so it should be good. A hangover all day yesterday kept me from being productive maybe today after work I can get the engine in.

I may machine another set to get that 4th hole right, becuase I'm OCD and can't leave well enough alone. As far as making one for the SR I sold every bit of my SR stuff to altalti yesterday so I would need dimensions of that bracket or an SR block.

Boostin240sx · 04-08-2011, 11:19 AM

I left this a little open ended, everything fit with lots of bending on the AC lines but I wasn't happy with how well the lines looked so I'm getting lines extended and shortened. For all intensive purposes, it would have worked as is.

JaindlS13 · 06-07-2011, 05:04 PM

Quote:

Originally Posted by Boostin240sx

You live in Minnesota, you don't have a clue what it is like to live in 90 to 100 degree days for two months a year.

hahahahahahahaha, you should try living in South Carolina where it's 90-100 degrees more than half of the year, with 80%+ of humidity.

codyace · 06-07-2011, 11:19 PM

Quote:

Originally Posted by tx240ss

That looks like it would work on my s13 with sr and using a ka compressor... how much to make me one??

codyace used to make these and he's disappeared... here's a picture of his

I haven't vanished? I've been making SR brackets now forever! All of my kits use the KA compressor and lines to keep all things kosher and working well!

PM me if you're interested in getting the AC working in your SR20. I'm actually on the newest version for all setups, that offer the most sway bar clearance ever.

FWIW: I have always wanted a set of RB brackets as well...this way I could help adapt the USA KA compressors to those brackets...we all know how the JDM stuff requires custom lines and the compressors often do not work.

codyace · 06-07-2011, 11:20 PM

Quote:

Originally Posted by Boostin240sx

I may machine another set to get that 4th hole right, becuase I'm OCD and can't leave well enough alone. As far as making one for the SR I sold every bit of my SR stuff to altalti yesterday so I would need dimensions of that bracket or an SR block.

I've got all of the SR AC stuff sorted out and have now for years. Props on making the RB stuff man! I wish I had more RB cars around me, just dont' see them so much.

joeapple8 · 06-08-2011, 12:06 AM

Quote:

Originally Posted by Boostin240sx

You live in Minnesota, you don't have a clue what it is like to live in 90 to 100 degree days for two months a year.

You live in Virgina, you don't have a clue what it is like to live in 90 to 110 degree days for half the year.

BlacknboostedS13 · 11-29-2012, 11:16 AM

Apologies for raising this thread from the dead... I just made a set of conversion brackets like you did, but my compressor hits the tension rod bracket. In order for it to fit right ill have to cut that bracket and there's no way the PS hardline will mount on the bracket. Did you see these same problems?

supersayianjim · 07-07-2017, 07:42 PM

bump, what about the wiring for this stuff?

feito · 07-08-2017, 11:34 AM

Good old thread.
What about wiring? Isn't it pretty straigh forward on the s13?
Im installing the ac on the rb 13 Im working on right now, and seems pretty straight forward.
Now, on the s14, that's a whole different story since the ECU is part of the ac system, and when replaced with an rb ECU, that part is no longer there.
I found the electrical part to be the most difficult part when working on the ac on my rb25 s14. For the compressor I kept the rb one, lines where just welded together, no biggie. What I did with the ecu electrical part was to bypass it by bridging a few wires, but if im not mistaken, the compressor wouldn't cut out when the evaporator was cold enough, so I would have to turn it off manually before it would freeze.
I had my ac working before I threw all the upgrades on the rb, now I got a new harness and havent got around to bridging those wires, which I probably will have to do very soon 'cause things are starting to get serious hot here in TX...

03-26-2011, 05:50 PM	#1
Boostin240sx Leaky Injector Join Date: Jan 2006 Location: VA - 757 Posts: 134 Trader Rating: (2) Feedback Score: 2 reviews	RB25 in a S13 with KA AC coompressor I've seen multiple threads about keeping AC with an RB25 swap and they usually involve the skyline compressor and custom lines and such. I figured I'd offer up these pics to help someone make a cheaper decision that doesn't involve recharging the system. When removing the KA I left the lines hooked up and wired the compressor off to the side. I made these bracket adapters to use the KA bracket with a piece of 1" and 0.375" aluminum. I missed drilled one of the threaded holes but 3 bolts will be enough to hold the bracket on there. We'll see how much room we have between the frame rail and compressor tomorrow when I get the engine in. Hope this helps someone...

03-26-2011, 06:03 PM	#2
marshallpre1 Leaky Injector Join Date: Dec 2008 Location: Hudson Valley NY Age: 36 Posts: 61 Trader Rating: (0) Feedback Score: 0 reviews	Nice post. Will be looking to do this if I don't end up selling my car. __________________ 97 Supra TT/94 SC300 NA-T/04 G35C/10 G37 Sedan

03-26-2011, 07:45 PM	#4
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	So how are you gonna make the A/C lines reach since the RB positions the Compressor 6-8in forward? __________________ 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

03-26-2011, 08:00 PM	#6
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	I'll tell ya now the KA Lines wont reach (maybe if you stretch the shit out of it but I dont think it will reach still), Im in the process of putting the A/C back in mine, I'm using the modded RB LP line and either a custom HP line or the Modified KA one. well see monday __________________ 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

07-07-2017, 07:42 PM	#16
supersayianjim Nissanaholic! Join Date: Jan 2010 Location: location X Posts: 1,807 Trader Rating: (10) Feedback Score: 10 reviews	bump, what about the wiring for this stuff? __________________ http://www.240sxforums.com/forums/rb...ject-s-rb.html

03-26-2011, 06:24 PM	#3
Jturbo Leaky Injector Join Date: Feb 2009 Location: mn Age: 79 Posts: 102 Trader Rating: (4) Feedback Score: 4 reviews	ac makes your engine weak.....

03-27-2011, 06:10 PM	#8
altalti Zilvia Junkie Join Date: Jul 2005 Location: va beach virginia Posts: 597 Trader Rating: (15) Feedback Score: 15 reviews	This man knows his stuff. If for some reason you have to recharge give me a shout. You have my number and I can probably bring the freon and gauges to do it. Thanks again you are a smart cookie when it comes to this stuff.

04-08-2011, 11:19 AM	#10
Boostin240sx Leaky Injector Join Date: Jan 2006 Location: VA - 757 Posts: 134 Trader Rating: (2) Feedback Score: 2 reviews	I left this a little open ended, everything fit with lots of bending on the AC lines but I wasn't happy with how well the lines looked so I'm getting lines extended and shortened. For all intensive purposes, it would have worked as is.

11-29-2012, 11:16 AM	#15
BlacknboostedS13 Leaky Injector Join Date: Oct 2010 Location: Titusville, FL Posts: 74 Trader Rating: (2) Feedback Score: 2 reviews	Apologies for raising this thread from the dead... I just made a set of conversion brackets like you did, but my compressor hits the tension rod bracket. In order for it to fit right ill have to cut that bracket and there's no way the PS hardline will mount on the bracket. Did you see these same problems?

07-08-2017, 11:34 AM	#17
feito Nissanaholic! Join Date: May 2007 Location: Texas Posts: 1,948 Trader Rating: (1) Feedback Score: 1 reviews	Good old thread. What about wiring? Isn't it pretty straigh forward on the s13? Im installing the ac on the rb 13 Im working on right now, and seems pretty straight forward. Now, on the s14, that's a whole different story since the ECU is part of the ac system, and when replaced with an rb ECU, that part is no longer there. I found the electrical part to be the most difficult part when working on the ac on my rb25 s14. For the compressor I kept the rb one, lines where just welded together, no biggie. What I did with the ecu electrical part was to bypass it by bridging a few wires, but if im not mistaken, the compressor wouldn't cut out when the evaporator was cold enough, so I would have to turn it off manually before it would freeze. I had my ac working before I threw all the upgrades on the rb, now I got a new harness and havent got around to bridging those wires, which I probably will have to do very soon 'cause things are starting to get serious hot here in TX... __________________ Tuners are big bullies

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode