D15b VTEC FAQ

[EG_GSR_HB]

I think i read somewhere you have to drill your own holes for it.

Someone correct me if im wrong.

My D15B will be here by this friday so i need to know the correct way also.

Thanks

[byronl]

The map sensor is on top of the throttle body on my jdm d15b.

[EG_GSR_HB]

Originally Posted by byronl

The map sensor is on top of the throttle body on my jdm d15b.

Isnt that where it is on all the USDM motors??

If I member correctly mine is on the top of the TB also.

[INVALID]

D15b Iac Hoses?

[HondaSIR3621]

Need help with these sensors, I know they have to be why im idling at 1700.
Ok heres some pictures to the loose sensors i have.
Number 1-

Numer 2-

Number 3- Now this sensor is confusing, it is connected to that black rubber thing. Located on the bottom, of the right side on the IM. It has a sensor that comes off of it. Nothing looks like it will fit up with it.

Thanks

[EG_GSR_HB]

Isnt the first one the MAP if im not mistaken and that hose you have to make your own hole on the IM also i think cuz the JDM im doesnt have it. I think im just going to use a d16z6 manifold

[NeonPinHead]

exactly, I got my D15B and used everything off of it except i swapped out intake manifolds for the Purge control solenoid useage.

[EG_GSR_HB]

Im gonna use a d16z6 IM and I got a 4 wire o2 sensor connector today also to rewire my o2 since mine is a vx harness with 5 wire

[NeonPinHead]

damn i posted a thread about that once... it's pretty simple just run new wires right off the ECU. 3 wires you can cut and run new ones and the other you have to splice into i believe it's D22 the green/white wire. anyway you can figure it out.

*Edit* Getting the motor today huh??? nice let me know how it goes.

[EG_GSR_HB]

the 3 left over wires splice into the grn/whit. i wired up the 4 wire last night using a how-to from hybrid automotive. and i had like 3 wires left.

So you say splice them into the grn/whit then??

im using a p28 ECu

[My93Civic]

Hello guys,

Hopefully you can help me out. Will be out in the market looking for a replacement AUTOMATIC transmission for my JDM D15B VTEC. Now I am aware that the JDM version of the Civic came with both the manual with LSD transmission, AND an actual AUTOMATIC tranny for this motor.

Now this can bolt up fine correct because currently I have the USDM EG DX tranny. I mean are all wires, and stuff the same? Shouldnt have any problems?

AND How can I differentiate the JDM D15B VTEC AUTOMATIC TRANNY from the rest??

THANKS

[JaredKaragen]

well, not all JDM transmissions came with LSD...

I don't know of any distinguishing markings on the D15B auto trans....

you just gotta check the stamp by the driveaxle input on the passenger side to make sure it reads "B000" on the lower half of the stamp...

you shouldn't have any problems using either trans... you can really put any 92-98 SOHC trans in. they are the same thing except they have different gear ratios inside I think... ask transzex about that one..... I am speculating on the small knowledge of auto xmissions.

I would say save yourself the trouble and just get an Ex/Si trans from any US yard where you get a good deal. It would basically be the same thing.

[My93Civic]

Originally Posted by JaredKaragen

well, not all JDM transmissions came with LSD...

I don't know of any distinguishing markings on the D15B auto trans....

you just gotta check the stamp by the driveaxle input on the passenger side to make sure it reads "B000" on the lower half of the stamp...

you shouldn't have any problems using either trans... you can really put any 92-98 SOHC trans in. they are the same thing except they have different gear ratios inside I think... ask transzex about that one..... I am speculating on the small knowledge of auto xmissions.

I would say save yourself the trouble and just get an Ex/Si trans from any US yard where you get a good deal. It would basically be the same thing.

See this is why I was inquiring...

http://cgi.ebay.ca/JDM-92-95-HONDA-C...QQcmdZViewItem

Supposedly this is the JDM Automatic transmission that came from the JDM D15B VTEC engine. Obviously it doesnt have LSD because LSD's are only offered in the manual version.

Now the second point I want to raise is you said I can bolt up any d-tranny from the 92-00 model years. Now can I REALLY?? use the transmission from the 96-98 model year Civics??? If so I think that would be better because I read that they were much better than the 92-95 transmissions. Supposedly it doesnt hunt as much as before and is more smoother.

Can anyone confirm? Because if it can bolt up fine, I will probably get the 96-98 version.

THANKS :bravo:

[My93Civic]

See this was in a 1996-2000 Honda Civic Review

"If you find a used '96 or newer model with an automatic transmission note the difference in shift quality versus older Civics. Civics from '92-95 had a hard-shifting autobox that tended to hunt badly when driving up and down rolling hills. For '96, Honda gave the autoshifter a bigger electronic brain (16-bit processor) capable of monitoring throttle position, road speed, brake activation and rate of acceleration or deceleration. Much better."

[INVALID]

Anyone with a gangle of posts want to post up my p08 ecu in the classifieds?

Nope, but i'll give you a gangle of ban time, howzat?

<3 Foo

[NeonPinHead]

Originally Posted by EG_GSR_HB

the 3 left over wires splice into the grn/whit. i wired up the 4 wire last night using a how-to from hybrid automotive. and i had like 3 wires left.

So you say splice them into the grn/whit then??

im using a p28 ECu

ok, after digging up some old info this is what you're going to need to do...
I don't know what o2 you're using but I used a universal o2 i bought from autozone.

cut and run a new wire from D14(orange/blue) to the signal wire on the o2 sensor(could be black, white, green, blue, etc... check the instructions it came with)

splice a wire into D22(green/white) to the ground wire on the o2 sensor(the wire that's a different color than the signal wire and the 2 same colored wires)

cut and run a new wire from A6(yellow/black) to the heater control wire on the o2 sensor(doesn't matter which one. one of 2 wires with the same color)

splice a wire into A25(yellow/black) or B1(yellow/black) to the heater voltage wire on the o2 sensor(the last remaining wire. one of 2 wires with the same color)

hope that helps, if it's difficult to understand I'll break it down...
(using bosch universal o2 as example)

function - o2 sensor wire color - ECU pin#(color) *note#(see bottom)

o2 signal - Black - D14(orange/blue) *1
02 ground - Gray - D22(green/white) *2
o2 heater control - White - A6(yellow/black) *1
o2 heater voltage - White - B1(yellow/black) *2

*1 - cut away from ECU to have enough wire to solder new wire into.
*2 - cut wire to make it easy to splice onto or cut just some insulation off of the wire leaving it intact to solder new wire onto.

[NeonPinHead]

Originally Posted by My93Civic

See this was in a 1996-2000 Honda Civic Review

"If you find a used '96 or newer model with an automatic transmission note the difference in shift quality versus older Civics. Civics from '92-95 had a hard-shifting autobox that tended to hunt badly when driving up and down rolling hills. For '96, Honda gave the autoshifter a bigger electronic brain (16-bit processor) capable of monitoring throttle position, road speed, brake activation and rate of acceleration or deceleration. Much better."

I know nothing about automatic transmissions. But I do know that all D-series transmissions bolt onto any D-series motors, which means any tranny that came off of a motor that started with D in it's block code will fit on any motor with a block code starting with D. and that quote sugguests that the ECU on an automatic car controls the tranny being that the 96+ups are OBD-II it probably will not work in your car. Like someone here said find a good used EX transmission and buy it Si's didn't come in auto so you have to find a EX with auto. the manuel transmission from the D15B and the Si are the same so I would assume the autos are also.

[JaredKaragen]

bout the LSD in an auto... I never heard of an auto coming with LSD from the factory.... but I could be wrong.

the best way to see if your transmission is somewhat close to what you want the stamp by the diff on the casing will have a B000 on it... like the manuals are S20/B000. do a search... info on that everywhere.

as for the LSD.... look through the driveaxle holes on the diff, and if there is nothing in the center (you can see straight through) it's LSD... not to mention it will have an LSD stamp on the casing.

[BlueCrxNC]

Originally Posted by EG_GSR_HB

...that hose you have to make your own hole on the IM also i think cuz the JDM im doesnt have it. I think im just going to use a d16z6 manifold

You don't have to drill any holes. You would if your REALLY want to have a seperate connection to the manifold. Easier to just use a "tee" to share with the Fuel Pressure Regulator vacuum line.

[NeonPinHead]

Does anyone know the Valve clearances on the D15B? or should I just use the D16Z6 specs?