After pondering and pondering I think I have found what I'd like to do....

I am new to the honda scene still and want to do a motor swap on my 91 hatch STD.

I figured the best way to learn more is to get hands on.

The Vtec d15b seems to be a fairly easy entry level swap. It is definite increase in HP from the 70HP I have now.

If I were to get an engine, 5 speed tranny, and switch to mpfi would I be fine? Or would I need more?

Mounts are the same right?

I think this is a swap I can handle.

Would bolt ons for the normal d15 fit?

Anyone running this same setup?

Anyone think I'd be wasting my time, or it wouldn't be worth it?

Right now, I'm just looking for a bit more HP for my DD that would have low miles.

Any and all input would be greatly appreciated.


Thanks in advance,
-DenzComp

 

Is your car auto right now?

You will need to convert to obd1 also.

Mounts are the same unless your car is auto now.

Bolt ons will work still.

Will be a night and day difference over your stock motor but won't be super fast still.

 

I currently have the 4 speed. I need a 5 speed tranny correct?

I'm not looking for a racer or anything, just want to make it a little more fun to drive.

 

D15B can be purchased from http://www.hmotorsonline.com

Swap is a straight bolt on deal. You keep your stock 5spd tranny, if you are 5speed, unless you have extra cash. If so, spring for an Si tranny, much shorter gearing will give the car a quick jump in acceleration, put will limit top speed and have high rpm on the highway (stock Si engines live a long time, so don't be fussy).

Wiring, unless your know your stuff, http://www.rywire.com .

If your auto, it's a bit more work, but it's only a few more hours of work (litterally that easy).

 

Is there an easy way to switch to obd1? Like just buying a harness?

I really don't even know what that is....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DenzComp &raquo;</TD></TR><TR><TD CLASS="quote">I currently have the 4 speed. I need a 5 speed tranny correct?

I'm not looking for a racer or anything, just want to make it a little more fun to drive. </TD></TR></TABLE>well then if that's the case it will make everything easier. Yes the monts are the same it will just bolt right up, but as mentioned before I would spend the $100 and get a used si trans.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DenzComp &raquo;</TD></TR><TR><TD CLASS="quote">Is there an easy way to switch to obd1? Like just buying a harness?

I really don't even know what that is.... </TD></TR></TABLE>why yes there is, an obd0 to obd1 conversion harness

 

http://rywire.com/store/obd0-o...48b07

 

So from rywire I need a obd0 to obd1 and dpfi to mpfi harnesses?

 

hmotorsonline is listing a hydro tranny for 175....do I have to go hydro? Im pretty sure I have a cable now.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DenzComp &raquo;</TD></TR><TR><TD CLASS="quote">So from rywire I need a obd0 to obd1 and dpfi to mpfi harnesses?</TD></TR></TABLE>you will need to wire up the mpfi yourself unless you want to send your engine harness to them to do it. It isn't that hard really and there are a bunch of write-ups online.

Even with an obd0-obd1 harness you will still have to wire some stuff like vtec and the distributor plugs. If you use a p08 ecu like you are supposed to you won't need to buy a 4 wire 02 sensor.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DenzComp &raquo;</TD></TR><TR><TD CLASS="quote">hmotorsonline is listing a hydro tranny for 175....do I have to go hydro? Im pretty sure I have a cable now.</TD></TR></TABLE>no don't buy that trans. It would be nice because it has a lsd, but you are better off staying with a cable si trans.

edit: prices went up on that motor, it used to be $450

 

When looking for the SI trans...what is the year range?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DenzComp &raquo;</TD></TR><TR><TD CLASS="quote">When looking for the SI trans...what is the year range?</TD></TR></TABLE>88-91. make sure you get a clutch/flywheel that matches

edit: 88 is different 89-91 all use the same stuff pretty much(talking about the clutch)

 

I was looking on eBay for a swap and one offers a P28 ECU...would that be better?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DenzComp &raquo;</TD></TR><TR><TD CLASS="quote">I was looking on eBay for a swap and one offers a P28 ECU...would that be better?</TD></TR></TABLE>it will work but the p08 is better. with the p28 you will also need to buy a 4 wire 02 sensor. Ebay motors can be very shady too, beware

 

I'm gonna stick with hmotorsonline. Just checking on price. I cant find an SI trans on ebay...does hmotorsonline get them ever?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DenzComp &raquo;</TD></TR><TR><TD CLASS="quote">I'm gonna stick with hmotorsonline. Just checking on price. I cant find an SI trans on ebay...does hmotorsonline get them ever?</TD></TR></TABLE>try the honda-tech marketplace

 

Thanks everyone, mainly ILcrxsi1.

If I just want to get the motor in, and cannot get an SI trans right away...what are my options for tranny? Any 5 speed?