d16a6 swap questions!!!

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Old Nov 24, 2007 | 02:49 PM
  #1  
kryptproductions's Avatar
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Default d16a6 swap questions!!!

i was wondering my wife is getting a 91 civic si with a d16a6 in it, i have a 89 civic dx and i was wondering she wants the d15b2 i have in mine and i want the d16a6 in hers they are both 5spd's i was wondering if i could do a complete switch "the engine, tranny, wiring harness and gauge cluster" u know everything or is it not inter changable????

and would it be hard???
please help
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Old Nov 25, 2007 | 06:29 AM
  #2  
JOE BD-0's Avatar
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Default Re: d16a6 swap questions!!! (kryptproductions)

It will be very easy to do if you only swap the longblock and trans. Keep all wiring and sensors ON each car. You don't even need to unplug the wires from the intake on each car, just let it hang there until you get the other motor swapped in. You will not even need an engine hoist if you remove / replace the engine and trans out from under the car....you may need a new intake gasket, but you don't need to remove the exhaust....
No need to swap wire harness unless you need the tach, or maybe it's just way easier to add a tach to the DPFI system. Good Luck
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Old Nov 25, 2007 | 08:23 AM
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Default Re: d16a6 swap questions!!! (JOE BD-0)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JOE BD-0 &raquo;</TD></TR><TR><TD CLASS="quote">It will be very easy to do if you only swap the longblock and trans. Keep all wiring and sensors ON each car. You don't even need to unplug the wires from the intake on each car, just let it hang there until you get the other motor swapped in. You will not even need an engine hoist if you remove / replace the engine and trans out from under the car....you may need a new intake gasket, but you don't need to remove the exhaust....
No need to swap wire harness unless you need the tach, or maybe it's just way easier to add a tach to the DPFI system. Good Luck</TD></TR></TABLE>

WOW! This is a great example of somebody posting absolute BS about something they are not very informed about, so you say swap the Si block into the DX keeping the same DPFI???? that would do absolutlely NOTHING except waste a crap load of time (no power increase will be felt). The D15 has 90hp and the Si has 106 and it's not just in the motors, you need the Si tranny, ECU and MPFI to make it worth it. I assume your girl cares nothing about power where as you do and thats the motivation for the swaps?

You ask me the best thing to do is just switch cars, no labor involved and the chassis are pretty close in weight so you'll get all the Si stuff you want and your girl still has point a to point b transportation so she should be happy?

If your insistent on this swap you need to convert your DX to MPFI and swap out the whole motor, tranny and ECU from the Si. the tach will go right in w/o any wiring cause the tach wire is already in your DX harness. putting your D15 in your girls car willl be much easier if you convert it to Mutilpoint which is pretty easy cause all you have to do is get any SOHC manifold (88-91 Si is the easiest) with 4 injectors and that way the motor/tranny will bolt/plug right in. you'll just need another Si ECU for your girls car since I DO NOT recommend converting hers to DPFI which would just lower the value and make the car suck.
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Old Nov 25, 2007 | 09:29 AM
  #4  
JOE BD-0's Avatar
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Default Re: d16a6 swap questions!!! (VtecSyndrome)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VtecSyndrome &raquo;</TD></TR><TR><TD CLASS="quote">

WOW! This is a great example of somebody posting absolute BS about something they are not very informed about</TD></TR></TABLE>

For OP info, I just did this exact swap in order to register and pass cali smog earlier this year......

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VtecSyndrome &raquo;</TD></TR><TR><TD CLASS="quote"> I assume..... </TD></TR></TABLE>

"I assume" is never a good place to start....

The OP said nothing about wanting an increase in performance, only that the swap is what his wife wanted.....he only wanted to know if it would work, not your opinion on efficiency of effort and performance of MPFI vs DPFI

btw, my first Honda was a built 1977, I bet you weren't even born in 1977.....
These 20 something know-it-alls on Honda-Tech usually don't know it ALL......


With all due respect mr vtecsyndrome, you might be right about the hp, value and car sucking, blah blah, but that wasn't what he was asking and the longblock swap WILL work albiet not ideal.......BTW, what does the motor / tranny "bolting right in" have to do with which intake system he uses? Just curious.......Let's keep arguing.....ha ha

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Old Nov 25, 2007 | 09:42 AM
  #5  
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Default Re: d16a6 swap questions!!! (VtecSyndrome)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VtecSyndrome &raquo;</TD></TR><TR><TD CLASS="quote">

If your insistent on this swap you need to convert your DX to MPFI and swap out the whole motor, tranny and ECU from the Si. the tach will go right in w/o any wiring cause the tach wire is already in your DX harness. putting your D15 in your girls car willl be much easier if you convert it to Mutilpoint which is pretty easy cause all you have to do is get any SOHC manifold (88-91 Si is the easiest) with 4 injectors and that way the motor/tranny will bolt/plug right in. you'll just need another Si ECU for your girls car since I DO NOT recommend converting hers to DPFI which would just lower the value and make the car suck.</TD></TR></TABLE>
This is the best option. Not the only option mind you, but if your going to swap engines this is the best bet.
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Old Nov 25, 2007 | 09:48 AM
  #6  
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Default Re: d16a6 swap questions!!! (LIMITLESS22)

Why not just trade cars and save yourself a lot of trouble. You get what you want, she gets what she wants.
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Old Nov 25, 2007 | 10:21 AM
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Default Re: d16a6 swap questions!!! (LIMITLESS22)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LIMITLESS22 &raquo;</TD></TR><TR><TD CLASS="quote">
This is the best option. Not the only option mind you, but if your going to swap engines this is the best bet.</TD></TR></TABLE>

That's all I was saying. knowing these motors and the issues surrounding DPFI to MPFI is a must to understand why I posted what I did.


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by esteen2 &raquo;</TD></TR><TR><TD CLASS="quote">Why not just trade cars and save yourself a lot of trouble. You get what you want, she gets what she wants.</TD></TR></TABLE>

Still the simplest solution imo, this is the way I would go.


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JOE BD-0 &raquo;</TD></TR><TR><TD CLASS="quote">

"I assume" is never a good place to start....

The OP said nothing about wanting an increase in performance, only that the swap is what his wife wanted.....he only wanted to know if it would work, not your opinion on efficiency of effort and performance of MPFI vs DPFI

btw, my first Honda was a built 1977, I bet you weren't even born in 1977.....
These 20 something know-it-alls on Honda-Tech usually don't know it ALL......


With all due respect mr vtecsyndrome, you might be right about the hp, value and car sucking, blah blah, but that wasn't what he was asking and the longblock swap WILL work albiet not ideal.......BTW, what does the motor / tranny "bolting right in" have to do with which intake system he uses? Just curious.......Let's keep arguing.....ha ha</TD></TR></TABLE>

Oh man, or should I say "old man" , he said "HE" wanted his wifes motor also and vice versa, it was not just about his wife. with that said, yes I did "assume" his intentions were at least somewhat performance based since that is what this forum caters to mostly. but your right I guess, I'm a dumbass for "assuming" such a ludicrous notion.

Again you apparently have no grasp for the fact the DPFI intake is nothing like the MPFI manifold therefore making a HUGE difference in power output due to the 2 injectors vs. 4... wait that must not matter either cause I'm a 20 something "Know it all"

weather or not he mentioned it the op, the obvious issues involved with this swap is what I posted about because this subject happens to be something I "DO" know about so thst is why I posted. there is a WHOLE lot I don't know and thats why I don't post in every thread but in this case we really could have done w/o your pointless opinion on the matter at hand....POPS (since age is apparently an issue with you)

wait, scratch everything I just said because I was not born until 1978 and I have just been informed that only people born in or before 1977 have opinions and knowledge that are actually valid ......oh well, I guess you'll have to listen to Pops after all.
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Old Nov 25, 2007 | 10:48 AM
  #8  
gursh d's Avatar
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Default Re: d16a6 swap questions!!! (kryptproductions)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kryptproductions &raquo;</TD></TR><TR><TD CLASS="quote">i was wondering my wife is getting a 91 civic si with a d16a6 in it, i have a 89 civic dx and i was wondering she wants the d15b2 i have in mine and i want the d16a6 in hers they are both 5spd's i was wondering if i could do a complete switch "the engine, tranny, wiring harness and gauge cluster" u know everything or is it not inter changable????

and would it be hard???
please help</TD></TR></TABLE>

your dx is DPFI. Your wife's si is MPFI. For you to run her d16a6 you need to convert your dx to MPFI. There are write-up's in the FAQ on how to do this.

Your wifes SI is wired for MPFI, and your trying to put your DX DPFI motor in there. Doesn't make to much sense.

Here's what I would do. Leave your wifes car alone, and get a full d-series MPFI swap for a couple hundred bucks. DOHC ZC's are pretty cheap these days. Or just convert your DX to MPFI, add some bolt-ons, and you got more power than a stock d16a6.

/thread
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Old Nov 25, 2007 | 11:07 AM
  #9  
loudandlow's Avatar
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Default Re: d16a6 swap questions!!! (gursh d)

JOEBD-0 is right, you could just swap long blocks

vtecsyndrome however has a much better point with the why swap longblocks only? there would hardly be a difference in mpg/power for either of you.

It makes no sense at all unless you are doing what joe said he did, just swap it in for emissions or if it's your last resort for a dd. If your going to swap at all, swap the whole thing, tranny, motor and all. read the faq, and do the complete swap. It won't be as hard as you think and that's the way for her to get the best mpg and you the best bang for the buck. good luck

and you want that Si transmission!!!

I'd still just trade cars though or not trade at all..... not enough change in gas mileage for her or performance for you to warrant all the labor you will be doing!!!

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Old Nov 25, 2007 | 11:10 AM
  #10  
VtecSyndrome's Avatar
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Default Re: d16a6 swap questions!!! (loudandlow)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by loudandlow &raquo;</TD></TR><TR><TD CLASS="quote">JOEBD-0 is right, you could just swap long blocks

vtecsyndrome however has a much better point with the why swap an a6 longblock only

It makes no sense at all unless you are doing what joe said he did, just swap it in for emissions or if it's your last resort for a dd. gursh is dead on, read the faq, and do the complete swap. It won't be as hard as you think and that's the way for her to get the best mpg and you the best bang for the buck. good luck


and you want that Si transmission!!!</TD></TR></TABLE>


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Old Nov 25, 2007 | 11:22 AM
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Default Re: d16a6 swap questions!!! (VtecSyndrome)

got caught editing
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Old Nov 25, 2007 | 11:28 AM
  #12  
gursh d's Avatar
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Default Re: d16a6 swap questions!!! (loudandlow)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by loudandlow &raquo;</TD></TR><TR><TD CLASS="quote"> got caught editing </TD></TR></TABLE>

lolz...you got something against me?
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Old Nov 25, 2007 | 11:30 AM
  #13  
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Default Re: d16a6 swap questions!!! (gursh d)

hahaha, no, i thought you had said to swap the whole thing, not to swap MPFI and do bolt on's... maybe i was just seeing what i wanted to see. gursh FTW
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Old Nov 25, 2007 | 01:41 PM
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kryptproductions's Avatar
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Default Re: d16a6 swap questions!!!

the reason why we dont just switch is cuz i like the dx body style better than the si style and ive got a crx hf gauge cluster in my dx hatch and an exhaust on it thats why we didnt wanna switch and she likes the si style better but i think ima do it for performance on my part so prolly have to swap the ECU longblock tranny know what im sayin anyway thx for the help ill let u know how it turns out!!!

peace love and honda grease
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