My friend bought an 89 CRX that is listed as a DX. But, this thing will whoop Si CRX's all day long. He's also had it to at or above 130mph so were thinking something is wrong with this thing. When he bought it it didn't run and the only thing wrong was electrical. Wires were connected in wrong places, weren't connected, etc.(tell tale signs of a swap gone wrong). While surfing for Si sites I found a pic of an Si engine bay and the engine looks exactly like my friends. How can you tell the difference between a DX and an Si engine? Any certain thing I should look for? Any pics? Please help me out here because I know nothing about CRX's, only about EG's. Thanks for any help.

Chris

 

If it looks exactly the same, he's done the MPFI swap. So the only diff would be the displacement (1.5L DX) (1.6L Si). But the block should say: 'D15' and then somen after that. But its not impossible to make one beat a Civic Si.

 

The 88-91 civic/crx si comes with the d16a6 and the 88-91 civic/crx dx has the d15b2. This code is stamped on a flat spot in the front right near where the block and transmission housing meet.

 

Exactly, check that out and get back to us...

 

ok, we looked at the car and found where it says d15b2. Now, the question is, why is it so quick? He's beating early 90's camaros, Si CRX's, Si hatches, Gti Golfs, etc. Also, he can hit 130 no problem, and it is still pulling like there's no tomorrow. Any ideas as to what is going on?

Chris

 

Does he have a turbo on it or somen?

 

Look at the intake manifold behind the engine. If there is a black box that says dual point fuel injection on it then it is a straight d15b2...if it is a long silver manifold with the throttle body located to the fat left of the engine then the d15b2 has been swapped to mpfi. Who knows it could be a VTEC head with a hot cam swapped on the d15 block

 

Head swap - my guess.

Is the throttle body on top of the intake manifold, or on the passenger side of the intake mainfold?



[Modified by gtcali, 1:04 PM 2/7/2003]

 

Ok, it's DPFI, not MPFI. Checked that. Now, the cam thing might be a possibility. He's been eating distributors like they're on the $1 menu at McDonalds and to get his car running right he's adjusted his timing so it's nowhere near stock right now. And all his power comes well after 4K. I've got a 92 CX hatch and I can take him out of the hole due to the CX having more low end torque, but after first gear I might as well stop. How could I tell if there is a VTEC head with a cam in it? He's looking to possibly sell this thing soon so he really wants to know what is done to it. Thanks a ton for all your help.

chris

 

as in all hondas! hahaha.

But i dont think he's got vtec. And, that DPFI is like a bottle neck. So restrictive. I'm surprised that he is making all the power that you're talking about. And, I'm beginning to think it's BS.

 

The question that comes up is the people that he is "beating" are they even really trying?

 

I'd be thinking it was complete BS too if I didn't drive it and ride in it nearly every day. And the other people racing are really trying. They're set up races, some from a 20 punch, some from a dead dig. And I personally have taken the car to 130, he says he's taken it past that. How true is that? Not sure, but I can verify all those races and it going to at least 130. This car is confusing. It's too damn fast to be stock(I've driven other numerous rex's) but everything points to it being stock. Damn hondas.......


Chris

 

It's fawking stock?

 

factory freak...just leave it at that

 

what the $@*&! my CRX Si doesnt go past 115mph with vafc/cai/4-2-1 header/open exhaust and 93 octane.

i can get to 110-115mph in a heart beat but then i'm there at a flat spot in powerband. I think my timing is at 12 degrees. wish i could do 130mph.

mind you i got the stock "SUPER" pm6 with no governor and 7,300 rev limit.

 

factory freaks are good for awhile but break alot and then just die earlier than normal production motors

i prolly got the 1 out of 6 bullshit motor, thats crap.
1 freak 4 norms 1 dud or 2 3 1. isnt that just a theory?

my DX hatch ran a 15.9.. so i'm expecting low 15s with this bitch.


[Modified by PaImportTuner, 10:23 PM 2/7/2003]

 

OK my D15B2 DPFI Civic DX was incredibly slow... I find it hard to believe that a stock CRX DX is fast. There has to be some reason why... because there is NO way a stock 92 hp CRX is gonna wail on early 90's camaros (v8 ones, anyways)

 

yeh cause them early 90 v8 camaros ran flat 15s with just filter and exhuast. stayed with me in my Talon til end of second than i was getting traction and fullboost.. then i was ghost. 13sec DSM(RiP)

 

i find it hard to believe.. with dx gearin with a d16a or mpfi swap it could maybe reach 130mph. My si has seen 125mph a few times when it had under 130,000 miles. I wont try now (still on same timing belt) I seriously doubt he could take a 88+tpi z28...maybe a 85-86 5.slo but damn its still dpfi. I can barely beat a 87-93 5.o gt stang and there bone stock. must be a freak like everone says.

 

i have taken my Z6 to about 127 mph... and just having 5300 on the tach... Z6, DX tranny, etc.. but its kinda dies bc i got stock mid exhaust.. and doesnt flow any more.. but i bet once i get my full 2.25 catback... i will pass 130 without trouble,, and i am using a PM6 only...

 

Please take out the Fast and the Furious out of the DVD player and take it to the closest trash can.

 

Is your friend hiding a little blue bottle in the trunk?

 

my d15b1 has seen 130 mph with the 4 speed in it but thats a loonng story i do have mpfi swap with alot of improvements done and it can woop a crx si easy si hatches easy camaros easy can u take a picture of the engine?

 

Thanks for all the helpful replies....and to the jack *** with the F&TF comment....this is honda-tech, I come here for answer to stuff I don't know. I don't come here for your retarded ****** comments.

And no, I can't take pics of the engine bay. My digicam is out of commission now. I think we're gonna chalk this one up to being a factory freak. Maybe when this thing broke down the guy did some massive **** up in the wiring/ECU area that got rid of the limiter or something. I have no clue. It's got D15 on the block, DPFI, stock as can be from what I can tell. Still, is there anyway I could tell if he does have a different head on there or a different cam? This is the only possible thing I can think of other than factory freak.

And about the giggle gas.....we only use that stuff inside the car

Again, thanks for all the serious help. Any other suggestions/ideas out there?

Chris

 

No, that wouldn't be it. The air resistance becomes too much at those speeds for the little 1.5 to push it through. Unless there's some modification done.