christianc5692

If you were doing this would you swap out the entire engine or just swap heads? What would be the best thing to do? Also im not 100% sure but its just the head that is vtec right? That is why I am asking this question.

I am gonna be converting my DX to an SI. Id rather not buy a new car just work on this one. Its my first car and I dont wanna get rid of it. Just build it.

Dkober101

You have to swap the entire engine and trans, assuming you are going from d16y7 to B16a2. What year is your car?

D16SiHatch

i assume you want to go from your dx engine (d16y7) to a em1 99-00 si engine (b16a2). if that's the case then those are two completely different engines, you cannot swap the heads. you need the whole engine, linkages, mounts, axles, etc. maybe you're just wanting to swap to a sohc vtec head though, in which case just find a z6,y8, or d15b head and drop it on to your d16 bottom end. get yourself the correct ecu, run wires for vtec, and you'll be good to go. search for mini-me swap to find more info on this

christianc5692

yea i have a 99 dx. I was figuring I would of had to swap the entire engine. I might just save up and put a b18c in there because im gonna be converting the car to manual when I do this.

I like the idea of having a car like a civic were everyone thinks its just a ricer but can smack a 350z or a something alone those lines.

D16SiHatch

just cause you have a civic doesn't mean people will think it's a ricer (although some people are ignorant and no matter what your car looks like, it's a ricer if its a honda). i would reword that and say most people think civic,integras,etc are slow, and it's a good feeling when you can show somebody that is not the case.

bsmith100

As others have said here. You need to do a complete engine swap to a B16 engine. Then you basically have your conversion. If you want the conversion to be more complete you might want to consider doing a rear disc brake swap.

EventsCo21XL

Wait, so you want to take an 99-00 DX and convert it to Si specs? You could get the body almost to SI status, but you'd need to also cut a hole in the roof for a sunroof. Also color wise, it would need to be Black, Red, or Electron Blue in paint. SI specific grill and front lip would be needed. Wheels would have to be SI wheels as well. Rear disc brake conversion would be needed as well. Decals would be the final touch on the outside.

In terms of the interior, you'd need to get all 4 seats and reskin the door panels to match the seats. Power windows mirrors and locks would need to be wired in, meaning you'd also have to find the door panels that accept the power switches. Cruise control steering wheel and button would be needed, as well as a Si gauge cluster.

I personally would just go B18C or K20 in terms of the swap since you are gonna have to do a tranny swap as well with new motor mounts and ECU swap. Body wise, I'd go with some SiR front and rear bumpers with a Si grill. Brakes, I'd probably do a GSR conversion or go aftermarket. Then you can pick out your own suspension and wheel setup

Then on the interior, get either a Si gauge cluster/ a CTR/ or a Spoon sports cluster. Seat wise, I'd get some CTR Recaros or even some Sparco seats and leave the rear alone. Leave the manual windows = Less weight and less to deal with in terms of window problems. I think this would be a more cost effective way to spend your money, rather than just a full Si conversion IMO

Good luck on your choice of what to do. I just wanted to suggest a different route of how to spend your money =D

B18CivicEJ8

You forgot front and rear LCAs, front and rear sway bars, front shock forks, and red strut bar if you want to get all technical.

EventsCo21XL

Haha, I did miss those LOL. My bad. The point of my post was that it just seems a lot better to improve on pieces than just to redo a a car from a low end DX to an Si. I know people grow attachments to their cars and hence why I didn't say just sell the car and save for an Si. Plus for me, I might even skip the body and build up a sleeper, DX badge and all. Although I'd run some HX wheels on it hehe.

christianc5692

I wont need any of that stuff. I already have skunk2 shocks and idk what type of brakes but I have after market brakes. I adjustable coilovers on it. A camber kit. Sway bars. I have a body kit with 17 inch rims. Interior wise I dont have stock gauges either and I have racing seats. And the car is already painted electron blue.

Engine wise I have a full cat back exhaust with headers and a cold air intake. Idk if this is a stupid question or not because im not to familiar with swaps. Would those headers and the exhuast fit on a b18c swap or would I need to buy new parts.

bsmith100

If you are deciding between a B16 and B18C swap, definitely go with the GSR engine.

Do you have the exhaust and headers for a B series engine, or for the original engine?

If you have the exhaust and headers for a B series engine I am fairly sure it will work for a B16 or a B18C, but I am not positive.

I think the air intake will probably also work as long as it is for a B series engine.

christianc5692

The exhauats and headers are for a d series engine. Its the stock engine on the car right now. So I would most likely need to replace those?

98civdx

a body kit and 17's? i smell a ricer.
and i dont think you will be smacking a 350z with a b16.

get a full b16 swap, ecu, linkage,axles, dont forget you will need to add the wires for the vtec crap, and change throttle cable,

EventsCo21XL

The header will need to be replaced, as well as the CAI if they are on the stock DX motor. The catback should still be useable I believe though. Like the other member said, if it's between a B16 and B18C, B18 for sure is the motor you should go for.

For your aftermarket brakes, did you do just the front and leave the drums in the rear. Too much front bias braking actually decreases performance.

I didn't mean to come off all crazy, but I just wanted to list what was needed for an actual stock to stock Si conversion.

I personally would lose the 17 inch wheels and body kit unless it was JDM or OEM optional, but that's just my personal preference. 17 inch wheels are just too much in unsprung weight. Body kits are also usually not aerodynamically friendly unless its from a reputable company like Mugen (Wind tests all their kits) or OEM, which can also affect performance. This is just my opinion, so feel free to disregard it if you want to.

Good luck though on your choices.

D16SiHatch

agreed. i retract my previous statement above :/

bsmith100

You will definitely need a B series header. A D series will not work. If you buy a B series swap, it will probably include the factory exhaust manifold. That will work.

The exhaust should probably work. You might need to get a different cat converter that will bolt up to the B series header. Once you get that, the exhaust should bolt right up.

You will also need a new air intake for a B series engine.

If you get a B series swap, it will probably come with the stock air intake. I would use that (the factory Honda intake) rather than buying another cold air or short ram intake.

roque-pr

the d series aftermarket intake would on it if not mistaking.... but as the bsmith100 said i would go with stock.IMO

98civdx

i think your missing a few words, and no a dx intake wont fit a b series, d16y7s have totaly different intake manifold desgin.

roque-pr

ooooo yeah if forgot it was d y7 because on my car y have the B series intake but mine is a z6 and yes my spelling is bad... ajajajajja

bsmith100

If you get a whole engine and gearbox swap it will usually come with the factory intake and factory exhaust manifold, so you should be all set. You might need a different cat converter, and then you will be all set.

Once you switch to rear disc brakes and add a front sway bar you basically have completed the conversion. The other differences are fairly small.

Vindicator9000

what years are we talking here?

Are you talking about just cosmetic, performance, or both?

If you truly want to do a FULL Si conversion on a 99-00 DX, you'll need the following from an Si:
engine/transmission swap
front and rear lower control arms
front and rear swaybar/endlinks/mounting brackets
shocks and springs
front upper strut bar
front calipers and rotors
possible proportioning valve upgrade
leather shift ****
rear trailing arms/knuckles/calipers/rotors/brake cables/etc
front and rear seats
gauge cluster
climate control
front grille
wheels
paint: either nighthawk black pearl, milano red, or electron blue pearl
bodycolor painted sidemoldings, mirrors, rear plate mount, skirts

Possibly more, this was just off the top of my head.

Or, you can just upgrade as needed. Fake Si's are kinda lame in my opinion. You can make an EX/DX/Whatever better than an Si with a swap and a few thought-out aftermarket mods in the right places.

92 vtec

have any of you guys seen a ek hatch with a sunroof ?

98civdx

^^ yea theres a few around me, i think some candian 96-00s came with them or you could always put one in.