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#2035343 - 11/15/07 02:09 AM saving up for a JDM B18C... here's the question...
Pinoytoy Offline
Post Master Sr


Registered: 06/29/00
Posts: 5035
Loc: Issaquah, Washington
What is the difference between the 96 spec and the 98 spec JDM ITR engines? On websites they have a $600 difference.

I'm planning to put this into my ej8 coupe and would like some insight on which would be easier to install into my car.

Is it worth saving up the extra cash and get the 98 spec or not? Jus trying to do some research on this engine. Thanks
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#2037264 - 11/15/07 04:39 PM Re: saving up for a JDM B18C... here's the question... [Re: Pinoytoy]
Slurp56 Moderator Online   happy
Post Master Sr


Registered: 05/28/00
Posts: 9574
Loc: S21
There are only a couple of major differences but the parts differences do add up to quite a bit. In '98 Honda started putting the JDM ITR 4-1 Header with 2.5" Collector onto the TypeR motors. The '96-'97 motors got a regular cast manifold. The header by istelf is not uncommon to sell for around $400 if you wanted to upgrade from a cast manifold.

The other major difference is that the '98+ ITR's got the 4.7 Final Drive in the transmission vs. the standard 4.4 that the '96-'97 ITR's got. Again, the price of the parts is alsmot $350 for the Final Drive kit if you wanted to upgrade a standard transmission.

Neither motor will be harder to install that the other. If you do get the 4-1 Header, plan to go to an exhaust shop or roll your own, since the standard size inlet on honda catalytic convertors is 2.25".

Other than that, just match the correct year ECU with your car, or you may need to get a jumper harness. 96-97 Honda's = OBD2a, 98+ = OBD2b. The 2 OBD systems are interchangeable, just the plugs that go to the ECU are difference, hence the need for the jumper harness.


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#2037604 - 11/15/07 06:25 PM Re: saving up for a JDM B18C... here's the question... [Re: Slurp56]
Pinoytoy Offline
Post Master Sr


Registered: 06/29/00
Posts: 5035
Loc: Issaquah, Washington
 Originally Posted By: Slurp56
There are only a couple of major differences but the parts differences do add up to quite a bit. In '98 Honda started putting the JDM ITR 4-1 Header with 2.5" Collector onto the TypeR motors. The '96-'97 motors got a regular cast manifold. The header by istelf is not uncommon to sell for around $400 if you wanted to upgrade from a cast manifold.

The other major difference is that the '98+ ITR's got the 4.7 Final Drive in the transmission vs. the standard 4.4 that the '96-'97 ITR's got. Again, the price of the parts is alsmot $350 for the Final Drive kit if you wanted to upgrade a standard transmission.

Neither motor will be harder to install that the other. If you do get the 4-1 Header, plan to go to an exhaust shop or roll your own, since the standard size inlet on honda catalytic convertors is 2.25".

Other than that, just match the correct year ECU with your car, or you may need to get a jumper harness. 96-97 Honda's = OBD2a, 98+ = OBD2b. The 2 OBD systems are interchangeable, just the plugs that go to the ECU are difference, hence the need for the jumper harness.



my car is a 99-00 ej8 so will i need the jumper harness for it to work?
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#2038887 - 11/16/07 01:22 AM Re: saving up for a JDM B18C... here's the question... [Re: Pinoytoy]
Import Tuner Offline
Gold Member
Post Master Sr


Registered: 03/04/00
Posts: 8185
Loc: Tacoma, Wash..
 Originally Posted By: Pinoytoy
 Originally Posted By: Slurp56
There are only a couple of major differences but the parts differences do add up to quite a bit. In '98 Honda started putting the JDM ITR 4-1 Header with 2.5" Collector onto the TypeR motors. The '96-'97 motors got a regular cast manifold. The header by istelf is not uncommon to sell for around $400 if you wanted to upgrade from a cast manifold.

The other major difference is that the '98+ ITR's got the 4.7 Final Drive in the transmission vs. the standard 4.4 that the '96-'97 ITR's got. Again, the price of the parts is alsmot $350 for the Final Drive kit if you wanted to upgrade a standard transmission.

Neither motor will be harder to install that the other. If you do get the 4-1 Header, plan to go to an exhaust shop or roll your own, since the standard size inlet on honda catalytic convertors is 2.25".

Other than that, just match the correct year ECU with your car, or you may need to get a jumper harness. 96-97 Honda's = OBD2a, 98+ = OBD2b. The 2 OBD systems are interchangeable, just the plugs that go to the ECU are difference, hence the need for the jumper harness.



my car is a 99-00 ej8 so will i need the jumper harness for it to work?

That Slurp guy is pretty knowledgeable...
But yeah, just get an OBDIIb ECU and you'll be fine (without an adapter harness) ...
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Import Specialty Automotive

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#2066628 - 11/25/07 05:30 PM Re: saving up for a JDM B18C... here's the question... [Re: Import Tuner]
A_DuB Offline
Newbie


Registered: 09/26/07
Posts: 4
Loc: Louisiana, Shreveport
whether you need a jumper harness or not depends on the ecu/motor....if your going to stick with obd2 then you wont need one but odb1 you will...obd1 ecu's are the more popular and in my opinion the better choice
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#2068220 - 11/26/07 12:58 AM Re: saving up for a JDM B18C... here's the question... [Re: A_DuB]
Import Tuner Offline
Gold Member
Post Master Sr


Registered: 03/04/00
Posts: 8185
Loc: Tacoma, Wash..
 Originally Posted By: A_DuB
whether you need a jumper harness or not depends on the ecu/motor....if your going to stick with obd2 then you wont need one but odb1 you will...obd1 ecu's are the more popular and in my opinion the better choice

I'm kinda new here!, are you saying he can use a '96/'98 OBD2 ECU in his car without an adapter harness?...
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Import Specialty Automotive

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#2070000 - 11/26/07 02:48 PM Re: saving up for a JDM B18C... here's the question... [Re: A_DuB]
Slurp56 Moderator Online   happy
Post Master Sr


Registered: 05/28/00
Posts: 9574
Loc: S21
 Originally Posted By: A_DuB
whether you need a jumper harness or not depends on the ecu/motor....if your going to stick with obd2 then you wont need one but odb1 you will...obd1 ecu's are the more popular and in my opinion the better choice


I'm confused, are you saying that OBD1 JDM ITR ECU's are more popular?

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#2101406 - 12/05/07 12:11 PM Re: saving up for a JDM B18C... here's the question... [Re: Import Tuner]
slowpoke Offline
Post Master Supreme


Registered: 11/23/99
Posts: 27266
Loc: Tx
 Originally Posted By: Import Tuner
 Originally Posted By: A_DuB
whether you need a jumper harness or not depends on the ecu/motor....if your going to stick with obd2 then you wont need one but odb1 you will...obd1 ecu's are the more popular and in my opinion the better choice

I'm kinda new here!, are you saying he can use a '96/'98 OBD2 ECU in his car without an adapter harness?...


No you cannot.

96-98 obd2 ecu is obd2a
99-00 obd2 ecu is obd2b

you cannot use a obd2a ecu in a 99-00 civic if you are using the 99-00 civic wiring harness the adapter plugs are different and will not plug into the ecu.

You will need an obd2b to obd2a adapter.





Edited by slowpoke (12/05/07 12:15 PM)

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#2105392 - 12/06/07 03:13 PM Re: saving up for a JDM B18C... here's the question... [Re: slowpoke]
Import Tuner Offline
Gold Member
Post Master Sr


Registered: 03/04/00
Posts: 8185
Loc: Tacoma, Wash..
 Originally Posted By: slowpoke
 Originally Posted By: Import Tuner
 Originally Posted By: A_DuB
whether you need a jumper harness or not depends on the ecu/motor....if your going to stick with obd2 then you wont need one but odb1 you will...obd1 ecu's are the more popular and in my opinion the better choice

I'm kinda new here!, are you saying he can use a '96/'98 OBD2 ECU in his car without an adapter harness?...


No you cannot.

96-98 obd2 ecu is obd2a
99-00 obd2 ecu is obd2b

you cannot use a obd2a ecu in a 99-00 civic if you are using the 99-00 civic wiring harness the adapter plugs are different and will not plug into the ecu.

You will need an obd2b to obd2a adapter.

Your sarcacm detector apparently needs new batteries... \:\)
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Import Specialty Automotive

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#2951595 - 08/25/08 04:27 PM Re: saving up for a JDM B18C... here's the question... [Re: Import Tuner]
jime4871 Offline
Jr Poster


Registered: 12/07/02
Posts: 96
Loc: Portland, OR.
Also if the JDM B18C motor is a 01, then it's an OBD2B. Probably not.
Just run the stock JDM ECU. Get yourself a jumper harness OBD2B - OBD2A.
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