Just finished a d16y7 into my sisters 91 Civic DX sedan. This is the motor found in the 96-00 Civic DX and LX. They can be found in junkyards with low mileage at a very reasonable price.

Intake and exhaust manifolds are sourced from the stock DPFI d15b2. The stock ecu and distributor are retained. The only wiring required is to lengthen the coolant temp sensor wires. The sensor is on the back of the block on the d15b2 and is on the thermostat housing on the d16y7. The power steering pump bracket is held on with only one bolt, but it doesn't seem to be a problem so far. We also took off the stock d16y7 motor mount bracket and replaced it with the motor mount bracket from the d15b2 so that the motor mount would line up properly. We used the d16y7 timing covers but had to cut off parts of the cover to fit over the d15b2 motor mount bracket. We also had to cut off a large part of the lower cover so that the d15b2 crank pulley would fit.

This swap is known to get upwards of 50 mpg in the summer according to rallymatt.

Piccies:














Modified by red civic standard at 1:10 PM 1/3/2006


Modified by red civic standard at 2:02 PM 1/5/2006

 

 

Cool. Think I'll put one into my currently dead hatch.

 

talk about extending the life of the car !

 

Good deal man. Sounds almost like my 88 CRX HF shell that I picked up for $300 and swapped in a 92 Civic DX motor that I got for $100 just for a daily driver. Extending life of a car ftw.

 

Isn't the y7 motor basically equivalent to the b2 motor anyway? I'm confused. Interesting swap though, I had thought about doing something like this until I realized if I was going to tune my car or do anything interesting at all with it I would need mpfi.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SVOboy &raquo;</TD></TR><TR><TD CLASS="quote">Isn't the y7 motor basically equivalent to the b2 motor anyway? I'm confused. Interesting swap though, I had thought about doing something like this until I realized if I was going to tune my car or do anything interesting at all with it I would need mpfi. </TD></TR></TABLE>

The Y7 is a 1.6 rather than a 1.5, and its a lot newer. Im sure there are subtle differences like cam profile and stuff like that, which all adds up to a slightly better motor.

 

Ah, 1.6, I suck, I totally forgot about that. How much are they? Definately a good swap then. I'm a little biased towards mpfi, but I realize I'm getting my swap a hell of a lot cheaper than most people, and my engine only had 116k so I've not had many high mileage worries either.

 

The d16y7 has 60,000 miles on it. Cost me $250 from a local junkyard. The Civic has 238,000 miles on it. Should be good for another 100k before the Michigan rust eats it up.

 

Damn, 250, nice nice, how;s the power feel?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SVOboy &raquo;</TD></TR><TR><TD CLASS="quote">Damn, 250, nice nice, how;s the power feel?</TD></TR></TABLE>

same as stock = slow

 

Haha, too bad.

 

Hey, I have the same motor (got it free!), in the same car (well, DX). I have only been able to get 42 mpg out of it, though. Its a good motor, although I think it runs a little lean. Been meaning to throw the wideband on it...



Oh, I did have problems with the angle of the driver motor mount bracket mount. It seems to be angled more toward the front of the car (the mount) and it was rubbing on the bracket on the body. I just shimmed the front bolt/stud on the mount like a cadillac and now it doesnt rub. Did you have similar problems?

Ben

 

What're you gonna do with the wideband and the dpfi, . I figure it must be running lean to get that kinda mileage cuz my d15b2 can only get that on a 60/40 city highway mix, and it's a 1.5 and not so peppy. Plus you gotta figure 1.5 ecu on a 1.6 engine, anyway, BRE is the ****.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ben Ogle &raquo;</TD></TR><TR><TD CLASS="quote">
Oh, I did have problems with the angle of the driver motor mount bracket mount. It seems to be angled more toward the front of the car (the mount) and it was rubbing on the bracket on the body. I just shimmed the front bolt/stud on the mount like a cadillac and now it doesnt rub. Did you have similar problems?

Ben</TD></TR></TABLE>

Forgot to mention that we used the drivers side motor mount bracket from the old d15b2.

 

ive known people to dyno 106whp on that motor with a obd1 p06 (using mpfi of course).. its actually an ok motor for the money and can be turned into a mini-me quite easily.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ben Ogle &raquo;</TD></TR><TR><TD CLASS="quote">Hey, I have the same motor (got it free!), in the same car (well, DX). I have only been able to get 42 mpg out of it, though. Its a good motor, although I think it runs a little lean. Been meaning to throw the wideband on it...
</TD></TR></TABLE>

that'd ****** own my gas guzzlin hatch! a tank a week or better.. ahh must be nice

 

Haha..

That's awesome!

Nice work. The combo sounds like it makes an awesome commuter car.

 

i truthfully dont think mpfi would cause your mpg to drop much,, especially not for the gains you can get from it. even with turbo d16z6, si tranny, custom pm6, etc.. and boosting regularly.. i can still pull 36-38mpg on a tank of gas!

 

^^ I would think mpfi would make mileage rise. If you can make more power out of the gas with a more efficient spray, then you'll use less of it. Let us not forget, the crx hf had mpfi and got 50+ mpg.

 

its so so slow though i cant stand it lol

 

I used the d15 bracket too. I had a bunch of stupid problems with the swap. I had to use the d16 crank pulley because I had to use the d16 timing belt cover. The d16 pulley is bigger and I didnt want to spin the alternator faster. Oh well. Also, I never got around to trimming the **** out of my timing belt top cover piece. I cant remember off hand exactly what the problem was, but the d15 bracket made it very difficult to fit the upper timing belt cover.

Anyway, I fill up ~ once a month, and thats nice.

Ben

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by shadycrx &raquo;</TD></TR><TR><TD CLASS="quote">its so so slow though i cant stand it lol</TD></TR></TABLE>

mpfi conversion with a si tranny and other bolt ons should easily get you into the 15s.. not blazingly fast but not to bad for your investment!

 

im running this same setup in my 90 dx hatch, got the motor for free and tossed it in. Great mpg, Ive got the tilted drivers side motor mount and the timing cover issues too.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by doubleA &raquo;</TD></TR><TR><TD CLASS="quote">im running this same setup in my 90 dx hatch, got the motor for free and tossed it in. Great mpg, Ive got the tilted drivers side motor mount and the timing cover issues too.</TD></TR></TABLE>

<FONT COLOR="orange">
Great job fella's..

I just had a few questions:


1) But can you guys elaborate more on what you mean by "driver side tilted" issues?
Does it make the car or motor rattle at all?

2) which fuel rail to use? b2 or y7


3) without converting to MPFI can you still use the y7 manifold?


4) would there be any difference (pros or cons) in using the b2 or y7 head?
a) If I used the b2 head on the y7 block... which headgasket to use?
b) "-----" what would my compression be ?


Thanks fellas
charlie neng moua
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