man i dont know what to get? well i do i want a b16 vtec but money is low low low
so i dont know where to start i have a 1990 crx with a stock d15b2 but it blew so i dont know whether to get the zc or the d15b vtec what would be the better choice there and in the long run how much horsepower will i pull out of that

 

It all depends what kind of goals you want, and the money. Both dont have a great deal of aftermarket support, but the D15B is a good motor and will give you more power out of the box...130 i think. As for the ZC i was never a fan of it really but that is all opinion. i say find a y7 or y8 and boost it 5-7 PSI, tune it and call it a day.

 

Both are relatively the same HP wise but the D15B will give you VTEC (which is overrated IMO)

You will be able to drop the DOHC ZC in with very minor wiring modifications, with the D15B you will either need to convert to OBD1 or downgrade the motor to OBD0, as well as running wires for the knock sensor and VTEC solenoid.

Aftermarket support is OK for both, usually you have to do a little research (something people never seem to like to do) to see what parts are compatible.

All in all, it does boil down to what you're going to use the vehicle for. I'm going to assume that you, like most other people here are using it for a DD and have a budget so I say get the DOHC ZC with some mild upgrades (IHE), it'll give you a nice little zippy car for not a lot of money.

 

listen whats boost! im a rookie at this but in the car im a master but whats under the hood i need to learn more to call myself a race car driver
how would you go by tuning a d15

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by smokez187 &raquo;</TD></TR><TR><TD CLASS="quote">listen whats boost! im a rookie at this but in the car im a master but whats under the hood i need to learn more to call myself a race car driver
how would you go by tuning a d15</TD></TR></TABLE>

Boost refers to turbocharging or supercharging an engine. If you are serious about tuning or forced induction, ask in the forced induction forum, 'tuning' is such a broad term and you need to explain what your plans for the car are before anybody can give you any advice.

 

but the thing is i had a d15b2 motor in it so all the parts are for the d15
will that be compatiable for the zc
will the tranny be strong enough for it

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by smokez187 &raquo;</TD></TR><TR><TD CLASS="quote">
but the thing is i had a d15b2 motor in it so all the parts are for the d15
will that be compatiable for the zc
will the tranny be strong enough for it</TD></TR></TABLE>

Regardless of which two motors you use you're going to have to get new parts for them. I also forgot to mention that you will need to convert your wiring to MPFI to accomodate either engine's fuel delivery system.

Your tranny will work just fine on either motor (assuming you have a DX) but will be slower than an Si or ZC transmission slightly.

 

i have a 90 si with the zc and its very reliable and its a little cheaper to install because u dont have to change all the wiring unlike the d15b2 for obd-1 conversion but like i say its up too u and its a good start for a dd car and good on gas

 

alright i want to be fast at drag racing but even faster at long runs
like on the freeways but will i be able to do that with the zc or the d15b vtec

here is what the prices are due to the fact that i dont know how to swap out a engine(need to learn so if you know ill pay to learn if you live near los angeles)
if i get the d15b vtec it will cost me $650 plus a stage 1 clutch $350 plus labor $450
$1450 plus tax $1500

but the zc i could get for $500 with clutch $350 plus labor $450 $1300

after that i was going basic headers intake intake and exhaust modifolds etc but in time

if you got a better idea for my crx due tell plus tuning a car

 

Neither motor will be "fast" at drag racing without forced induction. Both motors with IHE will run in the low 15s to high 14s at most. The ZC will cost you less in the long run, trust me. I bet the person that gave you those quotes will end up tacking a lot more onto that D15B swap. BTW, a header is an exhaust manifold.

Please excuse me if I sound rude, but I think you should do some more research before jumping into this.

 

he's right thats why its better i think to go with a b series motor but in the future because to make either one of these to have some good et's thats going to be alot more mula to spend,believe me i know!! thats why i dont spend money on this because theres not alot of parts around..

 

offense none taken
i need to know this stuff i love this stuff but my research has gone from knowing nothing to knowing a zip of the auto world

header is exhaust manifold check thanks

so look into it more how
well from the looks of you opinions ZC is the cheapest but god damn new things keep poping out

ok so here what i get so far the zc will be cheaper and perhaps better but whats this about the fuel injection i have to change that too how much will that cost and how do i look for it

 

zc, keep demand down on my motor

I don't think a d15b has a knock sensor as was previously stated

 

as far as fuel injection problems i have herd non on them just the distributor but i have none

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rocketrex &raquo;</TD></TR><TR><TD CLASS="quote">as far as fuel injection problems i have herd non on them just the distributor but i have none</TD></TR></TABLE>

Yeah, you will need to convert the wiring for your fuel system. You currently are running Dual Point Fuel Injection, both of those motors use a Multi Point Fuel Injection system.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rocketrex &raquo;</TD></TR><TR><TD CLASS="quote">he's right thats why its better i think to go with a b series motor but in the future because to make either one of these to have some good et's thats going to be alot more mula to spend,believe me i know!! thats why i dont spend money on this because theres not alot of parts around..</TD></TR></TABLE>

A B-Series swap will cost waaaaaay more than either of these setups.

 

i have an si and i did it myself and i had no problems for that...and yes i know its more expensive but yet i said over time so he can save up for it if he chooses too if not boost what you got

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rocketrex &raquo;</TD></TR><TR><TD CLASS="quote">i have an si and i did it myself and i had no problems for that...and yes i know its more expensive but yet i said over time so he can save up for it if he chooses too if not boost what you got</TD></TR></TABLE>

Yeah, I know the B-swaps can be done for a fair price, but if he's paying someone to do it it will cost more

Don't mind me, I'm a B-series hater anyways

 

also another thing to keep in mind is Dual cam ZC motors are "illegal" in CA, in the aspect that if you have one there is no way around smog and making it legal becuase there is no US equavalant. the d15b vtec is the USDM spec d16z6 vtec from 92-95 civic ex and si's

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbodcivic510 &raquo;</TD></TR><TR><TD CLASS="quote">also another thing to keep in mind is Dual cam ZC motors are "illegal" in CA, in the aspect that if you have one there is no way around smog and making it legal becuase there is no US equavalant. the d15b vtec is the USDM spec d16z6 vtec from 92-95 civic ex and si's</TD></TR></TABLE>

Very good to know for you CA people, damn you have some strict laws out there. Although I think it may be possible to pass the ZC off as a D16A1... but not likely

 

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

Very good to know for you CA people, damn you have some strict laws out there. Although I think it may be possible to pass the ZC off as a D16A1... but not likely </TD></TR></TABLE>

I don't really know that much about CA swap stuff or ZCs (to try and pass them off as D16A1s) but if ZCs aren't legal in CA then thats a pretty good reason to get somthing else IMO.


Modified by Bob_760 at 2:18 PM 4/26/2007

 

are the dohc zc legal in wa

 

go with the zc. i am more than happy with mine. definately and cheap motor but with reasonable power. so zc ftw.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by justin_allmotor &raquo;</TD></TR><TR><TD CLASS="quote">are the dohc zc legal in wa</TD></TR></TABLE>

Yes, very much so.

 

As far as CA legality goes, it's definitely better to go with the Dseries or any USDM motor instead of the ZC. I read an article that said the state govt has spent MILLIONS in the last year in just TRAINING CHP/law enforcement to identify aftermarket and racing parts (i would suspect JDM engines as well)

you will probably have a better chance of getting sent to the ref if you get pulled over and the cop sees a twin cam in your car.

 

how much horse paower cn you get out if a dohc zc with cams cam gears pistons and lightflywheel and a good racingclutch maybe even with itbs/h/e