B16 swap into 91 rex from 92 da

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Old Feb 9, 2010 | 10:07 AM
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Icon6 B16 swap into 91 rex from 92 da

Hey guys right now i own a 1992 ls integra with a b16a. My friend has a 1991 crx pretty sure its a HF model, that he blew the motor in and hes willing to sell it for cheap. So im just wondering what im going to have to do for the swap. Is it going to be a plug and play or am i going to have to get a jumper harness? I have a chipped p28 in the da currently, and im pretty sure its obd0 becuase i dont have a diognostic port under the dash. Any info or a link to another similar swap would be helpfull. Thanks alot
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Old Feb 9, 2010 | 10:10 AM
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Default Re: B16 swap into 91 rex from 92 da

1992 da is obd1. especially if you're running a p28 already without a jumper harness. it's plug and play with your car, though you will have to wire vtec in.
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Old Feb 9, 2010 | 10:16 AM
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Default Re: B16 swap into 91 rex from 92 da

Plug and play with the crx?
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Old Feb 9, 2010 | 02:49 PM
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Default Re: B16 swap into 91 rex from 92 da

to install the B16A engine and transmission into the CRX HF, you will need a mount kit and shift linkage - need to swap the HF knuckles/hubs out for ones from DX/Si and use the DA axles - to run it OBD1 you will need the ECU OBD0 to OBD1 jumper harness - need to use the HF engine harness and eliminate the injector resistor box (if the engine currently has OBD1 injectors), add wiring for VTEC and 4-wire O2 sensor and rewire the distributor (or get a distributor jumper) - going to need a complete exhaust system (the HF exhaust is tiny)
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Old Feb 9, 2010 | 06:34 PM
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Default Re: B16 swap into 91 rex from 92 da

Ok thanks for the info. Do you know of any shops that specialize in mount kits, jumper harness, or swap parts?
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Old Feb 10, 2010 | 02:02 AM
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Default Re: B16 swap into 91 rex from 92 da

search google or ebay, tons of options when it comes to mount kits, jumpers, and other swap related items
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Old Feb 12, 2010 | 07:16 AM
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Default Re: B16 swap into 91 rex from 92 da

Ok guys thanks.
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Old Feb 16, 2010 | 09:13 AM
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Default B16 swap into 91 rex from 92 da

Ok guys so i just picked up the car yesterday. The body only has 88xxx on it and its in great condition, and apparently there is a JDM non vtec motor in it. Theres four wires coming from the ecu, i think two go to the alarm and two to either to a coolant temp or something else. Im pretty sure on what i need for the swap, but im still unsure on the front hubs if i need to change them or not. I found a tech thread about the whole swap but the guy was using a gen2 b16 with a hydro clutch, so im not sure if the wiring is the same. He also doesnt say anything about changing out the front hubs he just says you have to take out the caps in the hubs. Here is the address to the thread. I also took some pics of the beast

http://crxcommunity.com/viewtopic.php?f=15&t=173
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Old Feb 16, 2010 | 09:26 AM
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Default Re: B16 swap into 91 rex from 92 da

the CRX appears to me to be a DX and not a HF

DX converted from DPFI to MPFI would have 4 wires added from the ECU to the engine bay - 2 for the 2 extra injectors and 2 to the distributor for the cylinder sensor

DX wouldn't need knuckles/hubs swapped for B-series swap
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Old Feb 16, 2010 | 09:45 AM
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Default Re: B16 swap into 91 rex from 92 da

I take a closer pic of where the wires go real quick.
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Old Feb 16, 2010 | 09:57 AM
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Default Re: B16 swap into 91 rex from 92 da

Ok theres some pics. There is deff two wires going from the ecu to that silver box. im prettty sure its the alarm. I also got a pic of th VIN cuz i was told it was an HF but he was most likely just guessing or something.
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Old Feb 16, 2010 | 10:46 AM
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Default Re: B16 swap into 91 rex from 92 da

the silver box in the second from the bottom picture is the fuel injector resistor box and is where 2 of the wires from the ECU would run to when converting the DX from DPFI to MPFI - the other 2 would go to the distributor - i can tell that it is a DX from the pictures of the wiring harness (round 14-wire connector at driver's side at firewall and only 2 connectors at passenger side) - the VIN does not distinguish between DX and HF - only indicates that the engine was 1.5L which is what both the DX and HF had
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Old Feb 16, 2010 | 10:48 AM
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Default Re: B16 swap into 91 rex from 92 da

Im so confused all the info im looking up about b16a first gens, say they have two one wire 02 sensors the valve cover has dohc bigger than vtec ect ect. That all matches my motor but its in my 1992 integra. Which is obd1. Why the hell would someone put a obd0 in an obd1 car? And yea i didnt do the first swap into my integra.
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Old Feb 16, 2010 | 10:55 AM
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Default Re: B16 swap into 91 rex from 92 da

Originally Posted by 90AWDeclipse
Im so confused all the info im looking up about b16a first gens, say they have two one wire 02 sensors the valve cover has dohc bigger than vtec ect ect. That all matches my motor but its in my 1992 integra. Which is obd1. Why the hell would someone put a obd0 in an obd1 car? And yea i didnt do the first swap into my integra.
a lot of swaps to OBD1 cars are made using OBD0 engines - they just change to the OBD1 distributor, OBD1 fuel injectors (usually) and 4-wire O2 sensor so that it is compatible with the OBD1 USDM ECU if that is what they are using - using OBD1 JDM ECU would need the 2 O2 sensors
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Old Feb 16, 2010 | 11:06 AM
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Default Re: B16 swap into 91 rex from 92 da

Is there any way i can tell if the injectors and distributor are obd1?
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Old Feb 16, 2010 | 11:17 AM
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Default Re: B16 swap into 91 rex from 92 da

Originally Posted by 90AWDeclipse
Is there any way i can tell if the injectors and distributor are obd1?
if the B16A runs with the OBD1 ECU, the distributor should be OBD1 - if there is no injector resistor box in the fuel injector circuit, it should have OBD1 injectors
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Old Feb 17, 2010 | 04:46 AM
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Default Re: B16 swap into 91 rex from 92 da

Ok man thanks alot. My b16 is about ready to pull, and be re-gasketed. Ill keep you posted. Pics will be up.
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Old Feb 18, 2010 | 06:28 AM
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Default Re: B16 swap into 91 rex from 92 da

Hey guys im buying all my swap parts and im wondering, when it comes to motor mounts, has anyone had problems with ebay ones. I mean im about to buy hasport mounts. But if i can save myself some cash Im not going to complain. Im only planing for a moderate build, maybe 300whp but alot of track use. So let me know what you guys think.
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Old Feb 18, 2010 | 08:20 AM
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Default Re: B16 swap into 91 rex from 92 da

just a quick look at my build thread.( in my sig)

I swapped a b16 into my DX and it should give you some tips and things to look for.
its converted obd1. so that'll help you out.




that looks like speaker wire to me! that such an epic fail. I suggest you change that wiring fast.
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Old Feb 18, 2010 | 08:54 AM
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Default Re: B16 swap into 91 rex from 92 da

OK so i just got these parts

Full gasket kit
Cometic head gasket .051"
Gates timing belt
ARP head studs
Hasport mount kit (extreme race)
Hasport linkage
Obd-obd1 jumper
Obd-obd1 distributor jumper

Since im pulling the b16a out of my integra I already have the axles and throttle cable. So im pretty sure I have everything to get the motor into the car. Hopefully ill have my parts sometime next week, and will be ready to swap in two.
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Old Feb 20, 2010 | 08:04 PM
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Default **UPDATE** on swap

Hey guys got my motor out today. Seperated the tranny and got the engine on a stand. Tommorow im going to really clean the bad boy up. Mic the output shaft on the tranny so i know what year i got, take the head off check to see if it needs to be decked, and maybe start preping the rex Heres some pics.
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Old Feb 21, 2010 | 08:36 AM
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Default Re: B16 swap into 91 rex from 92 da

Ok so today i pulled the head and started cleaning everything. I needed to mic the output shaft on the tranny to find out what year it was out of. I mic it a bunch of times and im getting 25.68. I know that 90-91 is 25mm and 92-93 is 26mm. So should im assuming its just worn. But anyway heres some more pics
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Old Feb 21, 2010 | 02:49 PM
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Default Re: B16 swap into 91 rex from 92 da

Hey guys I'm trying to figure out what the tolerences are for the block and head when it comes to being warped. I have a strait edge and feeler gauges I just can't find the spec. Please help me out.
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