UPDATED: the real question comes down to, is it cost-effective to mod a D-series?After new cams, valves, valves spring, I/E, (I am guessing it would cost less than 3k) would it be just as a good as a stock B16/B18 swap (which cost about the same right?) ?

hi, first post/question in honda-tech here:

are there any DOHC D-series, stock or aftermarket available???


edit: so the question I want to get to is, what are the things that can be done to a D motor? intake / exhaust, DOHC heads, cams?

I will also look into d-series.org too...


Modified by andylawcc at 8:37 PM 7/16/2005


Modified by andylawcc at 2:19 PM 7/23/2005

 

oh, this is to the person who IM-ed me:

"I can't use IM, I am a trial user. so here goes,
I am not looking for parts yet, I don't even have a Civic yet... I am just asking questions about it."

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by andylawcc &raquo;</TD></TR><TR><TD CLASS="quote">hi, first post/question in honda-tech here:

are there any DOHC D-series, stock or aftermarket available??? </TD></TR></TABLE>

yea, the d16a1 found in 86-89 integras in the US and the DOHC ZC motors ( I don't believe they are actually badged with a "d")

My knowledge of these motors doesnt extend any further than what I just posted, so I don't know anything else. try http://www.d-series.org

 

to the best of my knowledge: yes they're all sohc

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DC2-99 &raquo;</TD></TR><TR><TD CLASS="quote">to the best of my knowledge: yes they're all sohc</TD></TR></TABLE>

Maybe in the US, but DOHC D-series do exist yes, a friend of mine had one in his CRX, non-VTEC as well before swapping it out for a B18C. It's much more fun now

 

so the next question I want to get to is, what are the things that can be done to a D motor? intake / exhaust, DOHC heads, cams?

 

well you can start with the basics of Intake, Header, and Exhaust and I do believe some cams are made for some of the D motors as well.

Im pretty sure you cant just put a DOHC head on a SOHC motor

Also, some have built and boosted their D series into the 300 and 400 hp ranges but check out d-series.org for stuff like that.

one last thing you can do to the D is take it out and put something else in there

 

DOHC d-series such as D16A1, JDM Dohc ZC, etc.
D-series sohc are the most common.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by andylawcc &raquo;</TD></TR><TR><TD CLASS="quote">so the next question I want to get to is, what are the things that can be done to a D motor? intake / exhaust, DOHC heads, cams?</TD></TR></TABLE>
register on http://www.d-series.org
your questions will get a lot more attention. you can do basically all the same things you can do to any family of engines. raise compression, headwork, cam, various intake and exhaust tracts.

 

i was in the d series scene for over a year and i recommend exospeed performance. their all over d-series.org. some good mods are putting a y8 intake manifold and a LS throttle body along with an exospeed camshaft. you can raise the compression with a1 pistons i believe or also p29 pistons both oem and will raise the c/r significantly. also the bisi header pulls some good numbers and then just get your intake and exhaust and your good to go

 

there were twin cam D16s in europe in the CRX, and maybe the EF.

 

but in your option are these upgrades cost-effective? (say, compare to a regular B18 swap?)

 

Ok I have't read all the post but let me see if I can put in my 2 cent.......

There is a jdm motor called the zc. It is twin cam motor just a 1.6. It's like a destroked LS motor. Rated at 130hp and 130 lb/tq. There are things that you can do to d series...I have some zc pistons if you want. In the z6 if I'm not mistaking these will raise the compression to 12.5 to 1. I've heard of a lot all motor single cams using the zex stage 2 cam and they love it. Hope this helps answer your questions...

Shawn

 

86-89 integra d16a-dohc. only usdm dohc d-series i know of.

 

I was wondering...how much does it raise the compression if you use the usdm pistons?

 

well im in AUS and ive got a 88 integra with a motor badged as a D16A3 which is a twin cam 16 valve 1.6 motor. ive just finished a build on it and i was able to get afew things for it:

Cams
headers and exhaust
valves
springs
pistons
blah
blah
blah

sorry for not posting specifics as im just running out the door on the way to work but the point im making is, yes there are dohc heads for them and performance parts available. i live in australia and i can even get them here so there must be some laying around the place somewhere

 

4 sale !!!! sohc v-tec motor 95 motor with p-28 ecu and tranny mount axels much more

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by iakona &raquo;</TD></TR><TR><TD CLASS="quote">there were twin cam D16s in europe in the CRX, and maybe the EF.</TD></TR></TABLE> The crx is an EF and also there are DOHC d-series motors in the United States as well as Europe and Japan.

 

What USDM crx do you know has a twim cam that came from factory with it in there? I don't think you are right on that one. I'm sure your actually wrong.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rainmanef &raquo;</TD></TR><TR><TD CLASS="quote">What USDM crx do you know has a twim cam that came from factory with it in there? I don't think you are right on that one. I'm sure your actually wrong.</TD></TR></TABLE>

I believe he was refering to the DOHC d-series that came in the early integras. Just like the 4 other people before him.

 

yes, i can not emphasize proper punctuation enough.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rainmanef &raquo;</TD></TR><TR><TD CLASS="quote">What USDM crx do you know has a twim cam that came from factory with it in there? I don't think you are right on that one. I'm sure your actually wrong.</TD></TR></TABLE> I was talking about the first gen. integras that come with DOHC d-series.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EFcivicHB &raquo;</TD></TR><TR><TD CLASS="quote"> I was talking about the first gen. integras that come with DOHC d-series.</TD></TR></TABLE>

Sorry must have read it wrong.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rainmanef &raquo;</TD></TR><TR><TD CLASS="quote">There is a jdm motor called the zc. It is twin cam motor just a 1.6. It's like a destroked LS motor.</TD></TR></TABLE>

NOT TRUE!!!. The ZC/D16A1 is NOT a destroked LS motor. Such a motor would by definition be B-series. The ZC, in fact, has a longer stroke than the LS motor (90mm vs 89mm). It also shares the same 75mm bore diameter with other D-series motors. And no, the ZC head is NOT interchangeable with SOHC heads.

 

so the real question comes down to, is it cost-effective to mod a D-series?
After new cams, valves, valves spring, I/E, (I am guessing it would cost less than 3k ) would it be just as a good as a stock B16/B18 swap (which cost about the same right?) ?