B20b into a 99 ex
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Joined: Apr 2004
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From: Somewhere in the Dirty Dirty, GA
B20b into a 99 ex
I'm about to do an b20 swap into my civic....is there any problems I'm going to run into with the swap
Heres my part list:
JDM B20B
LS Tranny
99-00 Si motor and tranny mounts
P30 ecu
GSR Axles
GSR Half shaft
Should I have any problems using any of this....If you can help that would be great
Heres my part list:
JDM B20B
LS Tranny
99-00 Si motor and tranny mounts
P30 ecu
GSR Axles
GSR Half shaft
Should I have any problems using any of this....If you can help that would be great
Joined: May 2005
Posts: 10
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From: jacksonville, FL, usa
Re: B20b into a 99 ex (Supa_Slow_Civic)
I have a b20 vtec teg. It was an easy swap because I didn't have to change much of anything around. b18 to b20 , its all the same. You will need to add a wiring harness to your list also. keep us posted on the project
Junior Member
Joined: Sep 2002
Posts: 644
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From: Roy, UT, USA
Re: B20b into a 99 ex (rev2nine)
Why P30 ECU? Why not run a P75? Also i thought the IM was to tall on B20, do you need an LS intake manifold? Your Harness should be ok, you may need to extend wires.
GSR Axles will be fine I run them on my LS swap GSR trans. I would recomend either doing the 3M window weld trick or gettign the ES/prothane tourqe Mount bushings. I hate breaking that drivers side upper mount. It realyl is an easy swap. I would recomend it over a B16 for sure.
Yes it is covered under search but I thought i would be helpfull as much as i can.
GSR Axles will be fine I run them on my LS swap GSR trans. I would recomend either doing the 3M window weld trick or gettign the ES/prothane tourqe Mount bushings. I hate breaking that drivers side upper mount. It realyl is an easy swap. I would recomend it over a B16 for sure.
Yes it is covered under search but I thought i would be helpfull as much as i can.
Thread Starter
Joined: Apr 2004
Posts: 197
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From: Somewhere in the Dirty Dirty, GA
Re: B20b into a 99 ex (B18C1 '96 Coupe)
Well I have the p30 right now so i can go vtec but im going to get a ls ecu.....I'm also going to be using an ls wire warness.....I will keep you posted on it...should have some pics for you soon
Junior Member
Joined: Sep 2002
Posts: 644
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From: Roy, UT, USA
Re: B20b into a 99 ex (Supa_Slow_Civic)
Your using a LS Harness in an EK/EJ chasis? It wont mount to the ECU. The EK/EJ harness goes from the motor to the ECU, the DC Harness goes to Other Harnesses.
Your wiring Harness will work fine you will jsut need to extend some wires and possibley for ease of use switch some plugs.
Your wiring Harness will work fine you will jsut need to extend some wires and possibley for ease of use switch some plugs.
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Joined: Jul 2005
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From: chocolate factory
Re: B20b into a 99 ex (Supa_Slow_Civic)
if your gonna do a CRVtec setup in the future.. might as well get a 99-00 civic si engine harness.. just don't plug the vtec line.. and then get a P75 ecu.. OBD2B to OBD1 ecu harness... LS intake manifold... I would also upgrade your driverside mount... to a PLace racing one if you find one.. or a Hasport...
Honda-Tech Member
Joined: Mar 2018
Posts: 38
Likes: 0
Re: B20b into a 99 ex (rev2nine)
Why P30 ECU? Why not run a P75? Also i thought the IM was to tall on B20, do you need an LS intake manifold? Your Harness should be ok, you may need to extend wires.
GSR Axles will be fine I run them on my LS swap GSR trans. I would recomend either doing the 3M window weld trick or gettign the ES/prothane tourqe Mount bushings. I hate breaking that drivers side upper mount. It realyl is an easy swap. I would recomend it over a B16 for sure.
Yes it is covered under search but I thought i would be helpfull as much as i can.
GSR Axles will be fine I run them on my LS swap GSR trans. I would recomend either doing the 3M window weld trick or gettign the ES/prothane tourqe Mount bushings. I hate breaking that drivers side upper mount. It realyl is an easy swap. I would recomend it over a B16 for sure.
Yes it is covered under search but I thought i would be helpfull as much as i can.
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Joined: Jan 2013
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From: The South - Roll Tide !!!
Re: B20b into a 99 ex (rev2nine)
Honda-Tech Member
Joined: Mar 2018
Posts: 38
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Re: B20b into a 99 ex
But when I make my own threads , you say negative things ? Or some will say find a thread about it already. Which I did so I wouldn’t make anymore threads and now you’re complaining?
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