I just bout a crx dirt track car and it has the crappie d15 motor in it. I searched and everyone seams to like the gsr motors but there twin cam. The track rules say that it has to be a stock car but noone actually listens to that because noone there knows the difference in engines but I would like it to at least look stock. Are there any cheap motors that have better HP or any hybrid motors that are posable. I might just put a F22A6 in it because im familiar with accord and prelude motors.

 

what about ZC ?

 

ill look into that

 

sence its a jdm motor that was never brought over here is there any aftermarket parts for them

 

nobody know?

 

plenty of aftermaket parts for them there is the sohc zc which is the same as the stock crx si motor with a little more pep supposdidly from a more aggressive cam.

Then you got the dohc, garbage imho who wants to pay more for a shitty dohc motor with 10 more horses and 2 more lbs of tq

 

what about sohc vtec?

 

Yea I had seen that there was a sohc and a dohc. I also seen that there where different kinds some with 129hp@6800 106ld-ft@5700 that where in the civics and crx's and there was a zc that was only 119hp@6300 105lb-ft@5500 in the 90-93 tegs. are the sohc zc 129 or 119 the paper I have with all the info doesn't show if there twin cam or not.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GetCaughtDead &raquo;</TD></TR><TR><TD CLASS="quote">what about sohc vtec?</TD></TR></TABLE>

Not sure yet im gong to the track today and tomorrow to see what people are getting away with. I here that there is a 91 lude with a vtec head. if vtec is allowed ill probably just try and find one myself.

Another question you guys might know is if I get a zc will a crx si tranny bolt to it because my friend has one and I here they have short gears.

 

OK im being a post whor I know but I just saw something that confused me. I was looking threw the forums and some guy had a pic of his d15b2 whitch is what is in my car. well his has the black thing on top while mine has the normal tube intake mani like my accord. Dose it have the mpfi upgrade that I keep reading about on this board or did some come like that. how much HP would it have if it dose have that upgrade.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ChaosUnbound &raquo;</TD></TR><TR><TD CLASS="quote">Another question you guys might know is if I get a zc will a crx si tranny bolt to it because my friend has one and I here they have short gears.</TD></TR></TABLE>

Yes it will. The Si tranny is a good decision. Also, make sure the Si transmission is not from an '88. You must use a 89-91 crx si tranny for your application. Might want to upgrade your clutch/pp/flywheel combo while you are at it (order all those parts for a 90-91 crx si).

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ChaosUnbound &raquo;</TD></TR><TR><TD CLASS="quote">OK im being a post whor I know but I just saw something that confused me. I was looking threw the forums and some guy had a pic of his d15b2 whitch is what is in my car. well his has the black thing on top while mine has the normal tube intake mani like my accord. Dose it have the mpfi upgrade that I keep reading about on this board or did some come like that. how much HP would it have if it dose have that upgrade.</TD></TR></TABLE>

If you have a d15b2 that probably means you have a Dx. That means that you will need to convert to MPFI. Its pretty easy, just search. If you keep the d15b2 and convert it to MPFI, expect about 10-15 hp.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ChaosUnbound &raquo;</TD></TR><TR><TD CLASS="quote">Not sure yet im gong to the track today and tomorrow to see what people are getting away with. I here that there is a 91 lude with a vtec head. if vtec is allowed ill probably just try and find one myself.</TD></TR></TABLE>

If you are allowed to use a SOHC vtec, I would either go with the d16y8 or the d16z6. (The crx si tranny will bolt up to both of those as well)

 

[QUOTE=If you have a d15b2 that probably means you have a Dx. That means that you will need to convert to MPFI. Its pretty easy, just search. If you keep the d15b2 and convert it to MPFI, expect about 10-15 hp.[/QUOTE]

Well its actually a 91 HF but the guy i bought it off of raced it with an integra motor (not sure what one) and for some reason he took it out and put a d15b2 in. i have the intake mani that has the black thing on top it was laying inside the car so i guess that means he already made it mpfi

 

The HF came with MPFI.
Are you sure its a D15b2? Not a b6?

The b2 came with DPFI and the intake manifold had the bowl shaped intake.

If the previous owner was changing engines, he might have used a DX block/head.
But which MPFi intake did he use? The old HF stuff or the larger Si intake?
A D15b2 with a MPFI setup from a Si will make roughly 100-102hp.

If you're looking to keep a stock look, get a sohc ZC. The make 118hp and look identical to the other 88-91 D-series. The only way they would know what it is would be to find the engine ID stamp(very easy to grind off) or measure the camshaft.
The 92+ D-series with vtec can be made to look pretty stock but there are some dead giveaways. Like the valve covers that say "vtec" and the spark plug angle/orientation.
A dohc zc looks like a stock installation but the extra cam is pretty easy to spot.
Bswaps are pretty much out because they require a very obvious engine mount kit.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by davens &raquo;</TD></TR><TR><TD CLASS="quote">Are you sure its a D15b2? Not a b6?</TD></TR></TABLE>

yea once the search server comes back online ill find that picture or ill get off my *** and go to work where the car is and take a picture of it.

The intake is one of those intakes that look like they where cast with a 50 cent piece it looks like the intake I saw off a newer civic hatch. That is once you pulled the mcdonalds cup off it that he had on it so that he could slide his 3in intake into it.

I was reading that if I put a a6 or zc cam in it with a y8 mani, si trannie and a pm6 ECU it would beat an si motor. Also read that if I can get ahold of zc gears and put them with the si final drive I would have crazy short gears.

 

will a d16y8 bolt up out of a 97 civic ex? if its 130hp like this guy selling is saying that seams like a good motor to put in. he has the wire harnes ecu and tranny so everything would be good and i wouldnt have to **** with the integra wireing harness thats in the car now

 

a lot of engine swap possibilities for your CRX but just depend on your budget and what kind of power you are aiming for....

there a lot of swaps readily available for your CRX, so why put that F22a6, you will have to get custom mounts for that or make them yourself... not saying it cant be done.. but its not cost effiencent in my book...

there is a EF ENGINE SWAP GUIDE by BEN OGLE just read up on that one and that should help you alot...

as far for the d16y8 its all bolt on to the crx... you wont need to get the wire harnes for that too..not unless you want to take the whole harness out of the car... if you said in your first post that you got a stock d15 in your crx how did you end up with a integra harness?

*edit : well read thru the whole thing and swap that your car is an 91 HF wid a d15b2 MPFI i am quessing... i dont think you got a integra wiring harness tho... cuz the HF had MPFI too... so lets say you can use your current HF harness for that d16y8.....

 

btw stay obd-0 and use either the pm-6 or pg-7 obd-o ecu .... also use the obd-0 mpfi si or hf dizzy.. for that d16y8 swap your thinking about...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92integra_gs &raquo;</TD></TR><TR><TD CLASS="quote">btw stay obd-0 and use either the pm-6 or pg-7 obd-o ecu .... also use the obd-0 mpfi si or hf dizzy.. for that d16y8 swap your thinking about...</TD></TR></TABLE>

That's one opinion for a D16y8 or D16z6.
Another would be that you convert to obd-1 and run a P28 ecu

 

The car had an integra motor in it before he put the current motor in, so the wiring harness is just laying in the car.

As far as running the harness through the car its completely gutted so it would take like 2 min to run the harness.

I talked to some people at the track today and basically the rules say stock but as long as it has an H on it its good to go. im not wanting to spend like 4000 on a motor. its a dirt track car just want something to beat the talon that's winning all the races. the d16y8 is selling for cheap so thats why i asked about it. i figured with a good cam and headers i could get some good numbers.

another thing i wanted to ask is since my exhaust consists of just the heads would it be a good idea to put like a glass pack or something on it to create some backpressure? im not sure how open headers would affect the cars power. the car will be at full throttle almost the whole time so low end torque isn't a big thing i need to worry about.

Are the gears longer on the d16 motor? if so could i still use an SI tranny.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by davens &raquo;</TD></TR><TR><TD CLASS="quote">That's one opinion for a D16y8 or D16z6.
Another would be that you convert to obd-1 and run a P28 ecu</TD></TR></TABLE>

what would be the advantages of keeping it obd 0 or putting a p28 ecu in

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 2kTeg &raquo;</TD></TR><TR><TD CLASS="quote">

Then you got the dohc, garbage imho who wants to pay more for a shitty dohc motor with 10 more horses and 2 more lbs of tq</TD></TR></TABLE>

I would....and i would beat you......Dual cam is a better investment

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mach69 &raquo;</TD></TR><TR><TD CLASS="quote">

Yes it will. The Si tranny is a good decision. Also, make sure the Si transmission is not from an '88. You must use a 89-91 crx si tranny for your application. Might want to upgrade your clutch/pp/flywheel combo while you are at it (order all those parts for a 90-91 crx si).

If you have a d15b2 that probably means you have a Dx. That means that you will need to convert to MPFI. Its pretty easy, just search. If you keep the d15b2 and convert it to MPFI, expect about 10-15 hp.

If you are allowed to use a SOHC vtec, I would either go with the d16y8 or the d16z6. (The crx si tranny will bolt up to both of those as well)</TD></TR></TABLE>

WRONG i have a 88 si tranny on my ZC

 

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

what would be the advantages of keeping it obd 0 or putting a p28 ecu in</TD></TR></TABLE>

obd-0 is cheaper and you got to use a vtec controller to use the vtec
obd-1 is more efficient from what i heard...

and yes the SI tranny would be your best bet...
SI tranny came from 88-91... the only difference between those SI tranny is that 88 had a different spline count than the 89 -91 ....the reason why they say stay away from the 88 is because most stock clutch kit upgrade can be interchanged between the 89-00 (but that is another story....)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92integra_gs &raquo;</TD></TR><TR><TD CLASS="quote">obd-0 is cheaper and you got to use a vtec controller to use the vtec
obd-1 is more efficient from what i heard...</TD></TR></TABLE>

Price depends on what you find in the used market.
obd0 isn't necessarily the least expensive, especially whe you look at the big picture.
obd-0...you've got to buy the ecu and then the vtec controller.
obd-1...you need the ecu, dizzy, conversion harness and 4 wire o2 sensor.

When you've finished with the swap...
The obd-1 is going to run exactly like a factory setup...it has all the proper fuel/timing maps for that engine. Vtec activates under the right variables (speed, temp, rpm). And yes, the obd-1 system is marginally better for fuel economy.

The obd-0 will have fuel and timing maps meant for an engine without vtec.
So you'll need to tune the vtec controller. Which isn't easy to do correctly. Sure it will probably run, but the chances of running rich(wasting fuel and less power) or running lean(less power and dangerous for engine internals) are greater. A lot of times, a trip to the dyno for tuning is what it takes to get things perfected. So consider that an additional expense. Vtec activation is based solely on an RPM trigger.

When you eventually get around to considering programmable ecus, there are alot more choices and cheaper prices for someone with an obd-1 setup.
That's not to say there aren't options for the obd-0, but they are generally harder to do/more expensive and the features available are not as sophisticated or even numerous.

 

yeah theres alot of stuff for zcs

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by davens &raquo;</TD></TR><TR><TD CLASS="quote">
When you eventually get around to considering programmable ecus, there are alot more choices and cheaper prices for someone with an obd-1 setup.</TD></TR></TABLE>

well since i'm planning on running uberdata on my g22 i think it would be better if i went with obd1. That why i can just take the o2 off my accord put it on the crx and take it up to the drag strip on test and tune night and do some tunning on it.

is the d16y8 obd-2? if so what car would i get the ecu, dizzy, conversion harness and 4 wire o2 sensor from?