How I can up horsepower my d15 dualcarb motor? Replacement of the motor to not offer

Sorry for my bad English

 

But a holley carb system on it. hehehe 4BBL on a Crx....P.s I'm joking....You have the motor that people don't really fix up. But you can redo all the components and make it one sweet *** running STOCK motor.

Take it out....
...steam clean
...new sparks and plugs
...Gaskets
...All Things that can be replaced at your local store.
Like you said, motor-swap not an option, so you're only option is to CLEAN CLEAN CLEAN CLEAN....oh yeah and CLEAN... your motor. Take pride in your Motor. good luck

 

I'm guessing that you mean "Dual Point Fuel Injection" instead of dual carbs? If thats the case, the first thing you need to do is an MPFI (Multipoint fuel injection) conversion.

You can't do much with the DPFI, because the throttle body is about the size of a golf ball and you have 2 injectors. MPFI is the first thing you need to do. Then I suggest you knock out the Intake / Header / Exhaust.. and than an Si camshaft and some tuning. Get an Si transmission too, the DX/STD transmissions suck.

You can also consider doing a Mini-Me conversion. There is a pretty long write up here on it, and there is a lot of mini-me information in the archives. The Mini-Me build, is your D15 block, with an SOHC VTEC cylinder head.

If you search the archives you'll come up with a lot of useful info, just click "Search" in the upper right hand corner of the screen.

 

No I mean DUALCARB! twin carburator. You don't know about this intake system?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MAD-racer &raquo;</TD></TR><TR><TD CLASS="quote">No I mean DUALCARB! twin carburator. You don't know about this intake system? </TD></TR></TABLE>

What year is your car??

 

Honda Civic EF2 89 year. D15b dualcarb

 

Are you really located in Vladivostok? That must be an engine that most countries (namely, the United States) does not get, so it is not familiar to most of us. It might be like the dual carb JDM sohc zc, but we really wouldn't know without pictures or specs or more info on what you've got.

 

Yes post pictures of your duel carb setup, it would be neat to see it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Blaze45 &raquo;</TD></TR><TR><TD CLASS="quote">Yes post pictures of your duel carb setup, it would be neat to see it.</TD></TR></TABLE>

 

Check out this thread on d-series.org http://www.d-series.org/forums...=1416 &lt;--- lots of info on carbs, hope it helps in some way.

 

Yes I live in Vladivostok, Russia. The city of japan cars.

Unfortunately I don't have photos of my dualcarb. May be I'll make fotos later.

This is foto's my civic -
http://auto.vl.ru/gtclub/pictu...4.jpg
http://auto.vl.ru/gtclub/pictu...6.jpg
http://auto.vl.ru/gtclub/pictu...3.jpg

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MAD-racer &raquo;</TD></TR><TR><TD CLASS="quote">Yes I live in Vladivostok, Russia. The city of japan cars.

Unfortunately I don't have photos of my dualcarb. May be I'll make fotos later.

This is foto's my civic -
http://auto.vl.ru/gtclub/pictu...4.jpg
http://auto.vl.ru/gtclub/pictu...6.jpg
http://auto.vl.ru/gtclub/pictu...3.jpg</TD></TR></TABLE>

Nice!

 

why when I write instant message there is a message " You do not have permission to use instant messaging" ?
What I need to make?

 

i think you have to be a member for 20 days, it should say for sure in the trial user info at the top of the topics.

for more power, try header, port and polish, differen't carb, different camshaft, et cetera.

good luck.

 

I think your best bet is to replace the stock carb(s) with a set of Weber sidedrafts. It won't be cheap but it is a definite improvement in power.

 

Hi
This is fotos my dualcarb -
http://ibi1.photofile.ru/mad-racer/6793409YSD.jpg
http://ibi1.photofile.ru/mad-racer/6793417DVJ.jpg

 

Like the guy above said, find a set of performance carbs for it, then go ahead and knock out Intake, Header, Exhaust... and throw an Si camshaft in there. You'll be able to squeeze a little bit of power out of it.

If you could find an Civic/CRX Si Transmission you would probably be happier with that also.

 

He's not in the US. A North American only car, or rather it's transmission, isn't going to do him squat...although the advice is sound. A performance geared transmission will, frequently, offer you more performance then standard bolt-ons.

It's hard to say what exactly he has, but the jdm dual carb came in the 1.5x and had 105ps. The tranny ratio on some of the 1.5x is the same as the usdm Si, or at least according to http://www.honda.co.jp/factboo....html

 

you should ditch the engine and get a D16A8/9 and put weber sidedraughts on it
you can pick the engine and trans for dirt cheap, thats you best bet

 

Yummy.....