how to swap a b18b1 (obd1 Ls) in a 91 CRX Si

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Old Aug 20, 2006 | 11:42 PM
  #1  
px_R's Avatar
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From: Fresno, CA, fresno
Default how to swap a b18b1 (obd1 Ls) in a 91 CRX Si

do anyone have any link on how to do this....
any help on the wiring,
can I get the harness from the Ls and put it in the crx?
I need to ref it with the Ls motor any help plz....
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Old Aug 21, 2006 | 05:34 AM
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From: Spring City, PA, US of A
Default Re: how to swap a b18b1 (obd1 Ls) in a 91 CRX Si (px_R)

I have same car and motor as you, he swap is pretty straight forward and easy to do, i stayed OBD0 so if you do you will need a dizzy and ecu, use the stock harness everyhing plugs in fine you only have to extend the wire for the fan switch since the a6 has it on the back of the block and OBD1 motors have them on the thermo houseing
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Old Aug 21, 2006 | 09:30 AM
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Default Re: how to swap a b18b1 (obd1 Ls) in a 91 CRX Si (px_R)

go obd1...if u dont you limit your tuning options. get an mpfi jumper harness, ls ecu, i think i used an si harness and changed the injector plugs when i did it. .... wire in a resistor box...b-motor into ef mounts,b motor into ef linkage teg axels... ull need teg hubs also if u have an hf. i think im right... someone chime in if im not. i have this swap so pm me if u get hung up on something.
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Old Aug 21, 2006 | 10:02 AM
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From: Spring City, PA, US of A
Default Re: how to swap a b18b1 (saikouEF8)

It says 91 Si in the title, you won't need to do much to make it work, and OBD0 is fine, if its just a stock motor just run a PR4...if you want to do anything down the road, just chip it and use turboedit, OBD1 conversion isn't needed and cn be more of a hassle
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Old Aug 21, 2006 | 01:44 PM
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From: Fresno, CA, fresno
Default

thanks but need to ref the car with the LS,
and the Motor is complete with axle, motor mount, ecu, shift linkage, and everything eles,

do i have to use differnet axle, or anything from other motor?
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Old Aug 21, 2006 | 01:52 PM
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From: Weatherford, TX, USA
Default Re: (px_R)

you need different mounts. stock integra mounts won't work. go to http://www.hasport.com. they make a very reputable mount kit. you will also need their shift linkage. you can use the axles from an integra. it's also a good idea to get a computer from a 90 or 91 integra. you can use your SI ecu but it doesn't run as well. you will have to extend the fan switch wire as stated before. and possibly the o2 sensor wire if you plan on getting a header. you will also need to use obd0 injectors and distributor. other than that, your si wiring harness is plug and play.
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Old Aug 21, 2006 | 02:07 PM
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px_R's Avatar
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From: Fresno, CA, fresno
Default Re: (EFRue57)

will i be able to state ref like with ur setup
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