i have a 91 crx d15b2 dpfi. i cant get it running so im just gonna swap it. my question is will a d16y7 drop in? and can i use my dpfi set up or i have to converet to mpfi? also will my stock tranny bolt up? id love to just unbolt my intake mani and bolt it to the y7. im sry if the answer is somewer already i just suck at using the search (i just spent a hour searching and couldnt find anything helpful). i guess what im wanting to do is unbolt everything from the b2 and just swap block and head, nothing else. is this possiball?

 

you could just drop it right in and it would fit. i suppose you could just bolt the dpfi manifold and everything on the intake side and make it run. you wouldnt have the vtec working though. better to either put the b2 head on the y7, or do a mpfi swap and make the car run its best.

 

the reason i want to do it this way is to avoid wiring headaches. it'll stay obd0 right? and the b2 and y7 aren't vtec so no matter what i do vtec wont work, lol.

 

Im doing the same swap but d15b1 bottom y7 head.The y7 will drop in but the driver side mount is a lil diff.It will still bolt up but you have to cut back some of the plastic from the timing belt cover.The obd0 dizzy will bolt right in you can you have to run the pm6 (si ecu).You also have to wire up for mpfi seeing that you have a dpfi motor.And no the crx/ef si harness will not swap over.Also the fan switch is in the coolant neck not on the back of the block like on the b1-b2-a6 so you have to wire that up.Im doing a y7 head on a d15b2 bottom with some upgrade's.Good luck you can PM any questions you have on this swap.I wouldnt swap the dpfi manifold over,the b1 has a restrictor plate in it plus dpfi is not ment for Hp gain's.If you did this it's like covering a horse's nose and trying to make it run faster. The y7 has the bigist intake valves of all the D's but doesnt flow as well as a z6 but with a lil pnp it can do geat.

 

^^^ what he said

 

he doesn't want to do wiring. he said hes swapping it because the other motor wont run. he never said anything about performance boosting. the b2 doesnt have the restrictor plate, the b1 does. considering the y7 is not vtec ( im a dumass ) that motor should run well in this car as a dpfi.

 

Dpfi is trash i got the b2 mixed with the 1 my bad.If you are going to swap the motor over why not do the mpfi swap it is ez should only take 3 hour's max!The car will feel so much better.Fixed my post aswell trust me if you want to go up a hill stay with traffic mpfi will help alot.Also the four speed tranny im sure you have will bolt up.So if you had a intake/ header/exhaust on your old motor it most likly really didnt do **** for hp just make you louder.DPFI was ment for fuel economy big time not HP so keep that in mind if you want to make the D a lil faster.

 

so if i make the y7 dpfi there will b a couple of sensors on the block/head that will need rewired? and i have to use the si ecu? what would b easyer, doing the whole swap or keepin dp? i have a d16y7 with a y8 intake mani with the wiring harness and ecu. got it all for $80 and i heard it run! i dont care bout mpg's or performance right now, just need a running car for the winter.

 

Slap the motor in take your dpfi manifold off the b2 slap in on the y7 head.All you have to do is relocate the fan switch.Use your stock ecu then and drive the car lol.The y7 with a dpfi manifold might run funny to tell the truth im not shure how it will run.It might run to lean to rich might not run right at all but since you dont want to wire.You are taking a shot in the dark hoping it will run good.

 

ok i have a simple question for you all...
i just got a 89 crx si. i filled the tank and topped it off.
its sitting at half a tank with only 100mpg
why is it getting so bad og gas mileage.

 

1. i dont know

2. no need to thread jack

 

Tune-up.

 

gonna drop the y7 this weekend. will let yall know how it works out

 

i have same problem in my dx hatch with d15b nonvtec

 

You jdm d15b should be vtec did you buy it used?Some one must have took the head off.

 

im not sure. i bought my ef with it. its d15b non-vtec

 

If it is not dual carb from what i got was it's obd2
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The D15B is a JDM engine that came in several different variations in several different cars from 1988 to 2005 – This is a partial list (there are more) of the various D15B configurations and the cars they came from in Japan:

OBD0 - Single Carb – Compression Ratio 9.2:1 – 91ps – Found In:
88-91 Civic 4 door Sedan – Models 35M and 35U
88-91 Civic 3 door Hatch – Model 25R

OBD0 – Dual Carb – Compression Ratio 9.2:1 – 100ps – Found In:
88-91 Civic 4 door Sedan – Model 35X
88-91 Civic 5 door Shuttle – Model 55X
88-91 Civic 3 door Hatch – Model 25X (105ps in 5 speed – 100ps in automatic)
88-91 CRX – Model 1.5X (105ps in 5 speed – 100 ps in automatic)

OBD1 – Dual Carb – Compression Ratio 9.2:1 – 100ps – Found In:
92-95 Civic and Civic Ferio – Model MX

OBD1 – VTEC – Compression Ratio 9.3:1 – 130ps – Found In:
92-95 Civic and Civic Ferio – Model VTi
93-95 CRX Del Sol – Model VXi

OBD1 – VTEC-E – Compression Ratio 9.3:1 – 94ps – Found In:
92-95 Civic and Civic Ferio – Model ETi

OBD2 – Non-VTEC – Compression Ratio 9.4:1 – 105ps – Found In:
96-2000 Civic 4 door Sedan – Model Ri
96-2000 Civic Ferio Sedan – Model Mi
97-2000 Integra SJ (Joyful Sedan) – Models LXi and EXi

OBD2 – VTEC – Compression Ratio 9.3:1 – 130ps – Found In:
96-97 CRX Del Sol – Model VXi

OBD2 – VTEC (3 Stage) – Compression Ratio 9.6:1 – 130ps – Found In:
96-2000 Civic 4 door Sedan – Model VTi
96-2000 Civic Ferio Sedan – Model Vi
97-2000 Integra SJ (Joyful Sedan) – Model VXi

OBD2 – Non-VTEC – Compression Ratio 9.4:1 – 105ps – Found In:
2001-2005 Civic Type B
2001-2005 Civic Ferio Type C and Type C4 (4wd)

OBD2 – VTEC – Compression Ratio 9.9:1 – 115ps – Found In:
2001-2005 Civic Type G and Type G4 (4wd)

OBD2 – VTEC Lean Burn – Compression Ratio – 10.2:1 – 105ps – Found In:
2001-2005 Civic Type Ie

 

yo bro if u need wiring pm me i do it cheap to save u a headache

 

If you where in NM you would be making money off me sir i fkin hate doing mpfi swaps lol.

 

blah blah blah... your answer.... it will work... it will run.. it doesnt run that bad.. great gas mileage... alot easier and quicker... other options above will work too.. question is what do you want??

edit...anyone remember back in the day running fmu..lmao...

 

Im taking care of him through PM.He now has a obd1 jdm d15b vtec that he want's to drop in.