[ForeverDeath]

I have a 1991 Honda Civic std and id like to get so better performance out of it. The previous owner put installed D15B7 engine and 5spd transmission from a 5th gen DX but, didn't swap to mpfi, leaving the old std dpfi setup and its pm9 ecu.

I have reed many dpfi to mpfi swap forums but should i get the obd0 4th gen Si parts (will they even work with this engine?) or should i upgrade to obd1 and get what the D15B7 engine came with?

 

[ESD_DA9]

You will be fine with the OBD0 Si parts.

 

[psjones13]

You will be fine with the OBD0 Si parts.

It will work fine, but down the road if you decide to tune it, it will be easier to do with obd1. Much more support for obd1 than obd0

 

[ESD_DA9]

It will work fine, but down the road if you decide to tune it, it will be easier to do with obd1. Much more support for obd1 than obd0

:yes: This is true.

Also to the OP. If you want a little more out of the B7, throw in a A6 cam with a Y8 cam gear.

 

[ForeverDeath]

so i can install the Si cam into my D15B7 but where can i get(what car?) can i get the Y8 cam gear from? i was going to go to a junkyard to get the parts soon.

 

[ForeverDeath]

also how much would it cost to get these parts for the junkyard like the ecu, manifold with every thing on it, and the distribor.

 

[psjones13]

also how much would it cost to get these parts for the junkyard like the ecu, manifold with every thing on it, and the distribor.

That depends on the junk yard. Call and ask.

Good luck getting a good junk yard dizzy. Make sure it has the cap on it and the seal isn't dry or broken. If so the sensors in their are probably damaged, if cap is tight and well sealed its a good bet. I'd take the cap off and look at it before you buy it though.

 

[ForeverDeath]

Good luck getting a good junk yard dizzy. Make sure it has the cap on it and the seal isn't dry or broken. If so the sensors in their are probably damaged, if cap is tight and well sealed its a good bet. I'd take the cap off and look at it before you buy it though.

If the Si dizzy was bad could i use one from a 5th or 6th gen odb1 dizzy and still run obd0?
I don't want to spend to extra money to convert to obd1 untill i have to.

 

[psjones13]

If the Si dizzy was bad could i use one from a 5th or 6th gen odb1 dizzy and still run obd0?
I don't want to spend to extra money to convert to obd1 untill i have to.

No, the distributor you use has to be of the same obd as as the ecu

 

[ForeverDeath]

Alright thank you.

 

[99EJ6T]

where can i get(what car?) can i get the Y8 cam gear from?

96-00 single cam engines (y-series engines, d16y7/d16y8/etc).

edit: you can get a new one from honda for ~$10. in case you dont want to get one or cant find one from the yard.

 

[ForeverDeath]

ok so i when to the junk yard and all i found was a 91 ex automatic with a d16a6 eninge so i couldn't do the mpfi swap but i did get the cam but i couldn't find the y8 gear yall were talking abt so i just grabed the a6 gear y wont it work (or will it)? also if i do get an adjustable cam gear what will i have to set it to?

 

[loco.ef]

what u need is:
pm6 ecu (88-91 civic/crx si)
td-02u si distributor
u need a d16a6 intake manifold with injectors n resistor box. or u can use a d16z6 or d16y8 intake and swap the injectors from the d16a6.
si throtle cable.

here is a diy for the a6 cam in the b7
DIY D15b7 installing USDM D16a6 Cam for factory upgrade
and here's more info on the dpfi to mpfi swap
DX,STD (DPFI) -> Si,HX (MPFI) wiring

 

[tronsteezz]

Noobs helping noobs. It's a beautiful thing (no disrespect gentlemen).

 

[psjones13]

ok so i when to the junk yard and all i found was a 91 ex automatic with a d16a6 eninge so i couldn't do the mpfi swap but i did get the cam but i couldn't find the y8 gear yall were talking abt so i just grabed the a6 gear y wont it work (or will it)? also if i do get an adjustable cam gear what will i have to set it to?

The a6 cam gear won't work for thst mini me. You need to get the above mentioned gear for the "y-series engines, d16y7/d16y8/etc"

You should also degree the cam with a dial gauge and perfectly align your timing. There are a ton of good write ups on this. Honda Tuning did one just a couple months ago it should be on their web page. Everyone's setup is different so it is important to set you timing for your set up. After you figure out where to put your cam you can use that as a reference point to tune the cam timing from. Advancing to move your power band down the rpms, and retarding to move the power band up.

 

[si-hatch86]

The a6 cam gear won't work for thst mini me. You need to get the above mentioned gear for the "y-series engines, d16y7/d16y8/etc"

not all a6 cams need the y series gear. there is the 88 a6 cam that can use the stock gear.

 

[ForeverDeath]

what u need is:
pm6 ecu (88-91 civic/crx si)
td-02u si distributor
u need a d16a6 intake manifold with injectors n resistor box. or u can use a d16z6 or d16y8 intake and swap the injectors from the d16a6.
si throtle cable.

here is a diy for the a6 cam in the b7
DIY D15b7 installing USDM D16a6 Cam for factory upgrade
and here's more info on the dpfi to mpfi swap
DX,STD (DPFI) -> Si,HX (MPFI) wiring

im not swaping the engine to mpfi (ill be doing tat down the road tho) all im doings is swaping cams(just don't have the money right now :/ for the mpfi swap).

i should be getting an adjustable y8/y7 cam gear tomorrow to swap the cams.

 

[89s1]

If you are on a budget like you say, you don't need an adjustable y7/y8 gear.

the reason you use the y7/y8 gear is to correct an error in timing using the a6 cam on the b7 block (deck height differences) getting an oem y7/y8 gear for super cheap will do all you need it to do by getting the timing back to almost dead on 0.

$.02

 

[loco.ef]

im not swaping the engine to mpfi (ill be doing tat down the road tho) all im doings is swaping cams(just don't have the money right now :/ for the mpfi swap).

i should be getting an adjustable y8/y7 cam gear tomorrow to swap the cams.

well was jst trying to help... u should save some money and get the mpfi swap first thatz the first thing u have to do to an dpfi engine but thatz jst my opinion.
good luck.

 

[si-hatch86]

well was jst trying to help... u should save some money and get the mpfi swap first thatz the first thing u have to do to an dpfi engine but thatz jst my opinion.
good luck.

this.

the cam wont help with the dpfi choking the motor. IMO get the MPFI done first then a short geared trans, once you are done with those save up and get the cam, header,intake. possibly mill the head deck the block if you want all motor. again IMO id get the mpfi done first