Mut A/C

[TLP_280ZX]

did some searching and came up dry. so here goes, prepare to be confused.

i have a auto to manual, SOHC to DOHC car. so originally the car was a SOHC auto but is now a DOHC manual. my question is, what are all the fittings, compressor, etc etc that i need to get A/C back. or is it even worth it?

[driven_]

A/C is for the weak.

[TLP_280ZX]

lol yeah, but sometimes its nice to have it. like i said, if its too pricey then fluck it. but if its decent why not have it?

[TimTurboZ]

pretty sure you need all the DOHC AC parts, compressor, lines, condenser, etc and they connect at the firewall. Then get the system filled and your done right...

[PapaSmurf2k3]

I don't see why not... you can even make your own lines if you wanted to.

[Rauland-S13]

what year were the engines being swapped? I just did an '89 SOHC auto to '92 DOHC Manual. Even have the 92 compressor, hoses and everything. My problem is the hoses from the compressor dont mate with the lines on the firewall (compressor hoses to big). I need to find a local shop to fabricate a fitting for me. Otherwise, should be good to go.

[TLP_280ZX]

ok. arent the lines run a different way between the SOHC and DOHC engine? would i need a different blower motor an all or is the SOHC cam one okay? i mean none of the lines and such are there anymore, so ill have to get new lines and everthing.

[Rauland-S13]

I'm not an expert, but the biggest difference that I can tell between the SOHC and DOHC AC systems is the SOHC system used the old Freon as a refridgerant, while the DOHC uses the newer non Freon system (can't remember the proper code for it). Based on my engine swap and conversion, the lines and placement of the compressor isnt a problem (you'll probably have to get a DOHC compressor as the SOHC doesn't bolt onto the factory location with out some fabrication) what was a problem was that the lines coming from the DOHC compressor are about an inch in diameter, while the lines that lead into the firewall and into the cabin of the car are only 3/4 of an inch in diameter so its not direct plug and play. Then again, my car had the AC system converted from the Freon setup to the newer Eco-friendly version before I bought the car. You shouldn't need a new blower motor as its the same for both engines (blower moter being what actually controls the rate of airflow, located behind the glove box).

[Fibre guy]

A/C is for the weak.

Unless you live in Florida...

[AZ89two4Tsx]

Unless you live in ARIZONA...

FIXED'D.

My car has no A/C btw.

[tEknoS13]

OR Chicago, so humid. Never seen anything else like it.

[JoseBronx]

south FL FTL with no a/c, especially in a black car

[jeff420]

I'm not an expert, but the biggest difference that I can tell between the SOHC and DOHC AC systems is the SOHC system used the old Freon as a refridgerant, while the DOHC uses the newer non Freon system (can't remember the proper code for it). Based on my engine swap and conversion, the lines and placement of the compressor isnt a problem (you'll probably have to get a DOHC compressor as the SOHC doesn't bolt onto the factory location with out some fabrication) what was a problem was that the lines coming from the DOHC compressor are about an inch in diameter, while the lines that lead into the firewall and into the cabin of the car are only 3/4 of an inch in diameter so its not direct plug and play. Then again, my car had the AC system converted from the Freon setup to the newer Eco-friendly version before I bought the car. You shouldn't need a new blower motor as its the same for both engines (blower moter being what actually controls the rate of airflow, located behind the glove box).

wish that were true but they diddnt switch to r134a until s14

[super240sx7185]

No some late model 92's have r134a and every 93 and up Ive seen has r134a from the factory. Both my 92 and 93 does. And its not r12 lines with r134a fittings.

[TLP_280ZX]

so it seems like, its gonna be pricey. and since im eventually gonna go SR20 and its basically gonna be my weekend/drift/racecar or whatever, i said screw A/C. too much work

[Fibre guy]

You don't have it too bad....I'm combining r33 rb25det AC compressor, lines, and condenser with the s13's. PITA...

[jeff420]

No some late model 92's have r134a and every 93 and up Ive seen has r134a from the factory. Both my 92 and 93 does. And its not r12 lines with r134a fittings.

well i got 9 240's in my back yard not includin mine. ill have to go look and see if this is true. coulda sworn all had r12 fittings. hmmmmm....if what you say is true i have a few 93 240's

[super240sx7185]

I can get you some pics of my factory setup if you'd like just hit me up. Maybe it had something to do with where they were sold? And to op its pretty cheap theres a r134a setup complete on my local forums for 125 plus shipping. I personally know it works great because it was my old car lol.

[super240sx7185]

Heres a pic of the r134a setup out of a 93 se coupe.

[jeff420]

i call shenanigans. id like to see the sticker on the hood of a s13 240 that says its a r134a car. i just find it extremely hard to believe that out of 9 240's i have (not including my 92 hatch or my girls 93 vert) and none of them have r134 connections. none of my late 92 or 93's have it. none of the hoods i have here say r134 either, all of them say r12. im gonna start checking out at the junkyard as well. hell i could be wrong. couldnt you use the s14 lines and have r134 connections?

[super240sx7185]

i really wish i had the original hoods so i could see.. But i asssure you mine are infact made together with r134a not screw on fittings. Maybe they were converted professionally? Just weird i had two setups.

[Fibre guy]

Not to butt in but the lines I salvaged from a 92' 240 have r134a nissan logo stickers on most of the lines...

[jeff420]

yes but what im saying is maybe someone had their ac converted and diddnt just use screw in adaptors. who knows.

i mean technically couldnt people just use s14 ac lines and what not? couldnt imagine them being too different

[Rauland-S13]

i call shenanigans. id like to see the sticker on the hood of a s13 240 that says its a r134a car.

I'll take a pic tomorrow and post it.... I have an 89 that has that sticker (though I believe it was an insurance retro-fit).

[Wc240]

lots of cars were retro fitted. many companies used r134 before the official ban on r12 in 94.ive retrofitted over 30 cars with 0 problems. there is no part that will transfer between the single and dual. and you can keep ac with an sr. many ways to do it

[initial_jc]

I managed to use all my old stuff i just needed a bracket for the sohc compressor to fit on the dohc block

[TLP_280ZX]

lots of cars were retro fitted. many companies used r134 before the official ban on r12 in 94.ive retrofitted over 30 cars with 0 problems. there is no part that will transfer between the single and dual. and you can keep ac with an sr. many ways to do it

so with an SR, its still the KA A/C? after looking at the photo super240sx7185 posted up, the A/C system doesnt look overly complicated. and the DOHC motor and SOHC lines basically ran in the same direction and mounting points for the compressor and all were the same? oh and to access the blower motor do i have to remove the dash or just glove box?

[maryjane]

ugg, im regreting taking my a/c out

no a/c=fail in fla (unless its winter)

[im_looking_for_a_240sx]

I managed to use all my old stuff i just needed a bracket for the sohc compressor to fit on the dohc block

yeah i was gonna say the dual and single cam brackets are different also. thats part of the reason i didnt keep a/c on mine when i did dual cam swap. also, the bay has alot more space making it look better and the condenser and bracket just make for big seat sinks on the engine. and you lose need for a a/c belt so there's less power being taken from the engine.(although its not that much being taken away to begin with.)

[Alonso]

Ok you ready....

DOHC AC system in SOHC....

You need......................S14 lines!

The lines use the same size fittings in the firewall as the lines in 89-90 models.

The S14 condenser would work too just removing the lower mounts and notching the radiator support. It is a much better design and the lines are easier to work with.They dont run in front of it like the S13 condensers do.Looks cleaner too and is already setup for R134a...

Also the S14 is slightly wider then the S13,so the lines dont hug the engine as much as the Stock lines do.This gives you more clearance for turbo components

Some pics of what Im working with-

I hope I was of any help!