engine swaps for ef?
Hey i have about $2700 for a nice engine, i was thinking of droping in a b16 engine in a ef hatch, would b16 be reliable? ? Or should i save up and get a gsr? Just want to knoe witch motor has a good amount of power and is reliable, right now i have a d15b2 non-v
My wife and I both have b16s in our efs. Mine is my daily, drive to work and back, run errands and the usual stuff an old married guy does. I find the engine to be reliable and reasonably fuel efficient. BUT most of all the most fun I have had since my 500 hp Mustang from the 70s. Mine is in a crx, my wifes is a hatch. Both are great fun and a suprise for the younger crowd in the area(white haired guy)
regards
dave
regards
dave
For a nice budget friendly daily driver I would go B20Z.
If you want fast NA B18C5/R.
If you see boost in your future B16/B18C1.
B16 is easier to swap in if you get the 1st generation JDM B16a as it is obd0 wiring like your ef, but still needs some mods. But if you bump up to a newer b16 or b18 gsr stuff, then you are looking to spend well over $2700 just to get it in the car and running
$2700 for a NA engine swap is plenty. I can tell you what I spent on my swap:
"Full" Swap from HT: $1000
B16A OBD0 SiR I motor, 80k miles
SiR Cable trans
90-93 integra Axles and half shaft
Starter
distributor
alternator
HASport Mounts
ACT Clutch
Flywheel
B16A OBD0 headers
Shift linkage: $60 for DA or $130 for innovative B-series into EF, I did the $60.
OBD1 distributor: $30 on HT
P28 ECU: $75 on HT
Jumper: $40 eBay
DA integra spindles: $30 a side+shipping and $15 for new pads
Intake: can use stock but I got a new filter for $35 (K&N filter)
Resister box: $20
Total: ~$1500 because I did replace the headgasket and put ARP head studs in and a couple other things.
Shopping List
This is everything that I had to purchase for my swap, most of this can be packaged if you go through a company such as Hmotors or a for sale ad in the marketplace.
1. Motor – Deciding on the motor is a key point in your swap. The B series motors ranged from the B16A, the original JDM DOHC VTEC, to the B18A1, Non-VTEC, to the B18C series swaps and even the B20 motor. The price ranged on all the swaps. Generally, higher displacement is better for boost and VTEC is good for staying NA. Your budget will decide which motor you should buy.


2. Transmission – Most of the B series transmissions are fine. The GSR and B16A transmissions have shorter gears, which is great for the drag strip and NA set ups. While the LS transmission has longer gears which can help build boost for longer durations and offers much more comfortable highway cruising. Note that you can build your own transmission and change final drives, gear ratios, ect. Note that many of these transmissions are cable driven, but some are hydraulic. The hydraulic transmissions will need custom work or the purchase of a conversion kit to work with the cable clutch of the EF Civic.

3. Basic Bolt ons – I am talking about the starter, alternator, Power steering, air conditioning, intake manifold and the distributor. These should all be easy to come by. They should be included with the motor most times and are easy to find at the junk yard if they aren’t.

4. Motor Mounts – The EF generation came with a D series motor. If you want the B series motor to fit you must buy custom mounts. eBay offers many choices, from Hasport to off brand. Used mounts are also a good choice. You will also need the rear mount bracket from a B series transmission if yours does not come with one.
5. Accelerator Cable – You need an accelerator cable out of an Integra. 90-93 should work. Automatic and manual accelerator cables are the same.
6. Clutch Cable – stock clutch cable will work just fine. You will have to loosen the mount on the B series transmission and push up on the pull arm to get the cable to fit, but it fits none the less. If you have a hydraulic transmission, you will need to fabricate or buy a conversion since the EF civic is cable driven.
7. Clutch and Flywheel – The stock flywheel and OEM clutch components will work fine. But replace the clutch, pressure plate, and throw out bearing while you have the motor out.

8. Water Pump and timing belt – Both of these are easier to replace with the motor out and are items that wear with time. Cheap insurance for a lasting motor

9. Radiator – The stock radiator will work perfectly for the B series.
10. Shift linkage – The shift linkage will have to be custom made. You can buy a premade shift linkage, but I would suggest buying the same brand motor mounts since they were designed together. eBay motor mounts and a hasport shift linkage may or may not line up.
11. Injectors and resister box – If the injectors are peak/hold, you need an injector resister box. If they are saturated, you do not.
12. ECU – It goes without saying that you need a new engine control unit. The ECUs for each motor are different and often you can buy ECUs chipped to run your motor. The P28 is a common ECU choice for the OBD1 motors. Note that the ECU and distributor need to share the same OBD code to be compatible.
13. ECU Pins – I suggest getting some spare plugs and/or a conversion harness. For anyone running a VTEC motor, regardless of OBD, you will need extra wires put into the ECU. And if you are running a DPFI model, you will need to add the extra wires to convert to MPFI for any B series swap.
This is everything that I had to purchase for my swap, most of this can be packaged if you go through a company such as Hmotors or a for sale ad in the marketplace.
1. Motor – Deciding on the motor is a key point in your swap. The B series motors ranged from the B16A, the original JDM DOHC VTEC, to the B18A1, Non-VTEC, to the B18C series swaps and even the B20 motor. The price ranged on all the swaps. Generally, higher displacement is better for boost and VTEC is good for staying NA. Your budget will decide which motor you should buy.


2. Transmission – Most of the B series transmissions are fine. The GSR and B16A transmissions have shorter gears, which is great for the drag strip and NA set ups. While the LS transmission has longer gears which can help build boost for longer durations and offers much more comfortable highway cruising. Note that you can build your own transmission and change final drives, gear ratios, ect. Note that many of these transmissions are cable driven, but some are hydraulic. The hydraulic transmissions will need custom work or the purchase of a conversion kit to work with the cable clutch of the EF Civic.

3. Basic Bolt ons – I am talking about the starter, alternator, Power steering, air conditioning, intake manifold and the distributor. These should all be easy to come by. They should be included with the motor most times and are easy to find at the junk yard if they aren’t.

4. Motor Mounts – The EF generation came with a D series motor. If you want the B series motor to fit you must buy custom mounts. eBay offers many choices, from Hasport to off brand. Used mounts are also a good choice. You will also need the rear mount bracket from a B series transmission if yours does not come with one.
5. Accelerator Cable – You need an accelerator cable out of an Integra. 90-93 should work. Automatic and manual accelerator cables are the same.
6. Clutch Cable – stock clutch cable will work just fine. You will have to loosen the mount on the B series transmission and push up on the pull arm to get the cable to fit, but it fits none the less. If you have a hydraulic transmission, you will need to fabricate or buy a conversion since the EF civic is cable driven.
7. Clutch and Flywheel – The stock flywheel and OEM clutch components will work fine. But replace the clutch, pressure plate, and throw out bearing while you have the motor out.

8. Water Pump and timing belt – Both of these are easier to replace with the motor out and are items that wear with time. Cheap insurance for a lasting motor

9. Radiator – The stock radiator will work perfectly for the B series.
10. Shift linkage – The shift linkage will have to be custom made. You can buy a premade shift linkage, but I would suggest buying the same brand motor mounts since they were designed together. eBay motor mounts and a hasport shift linkage may or may not line up.
11. Injectors and resister box – If the injectors are peak/hold, you need an injector resister box. If they are saturated, you do not.
12. ECU – It goes without saying that you need a new engine control unit. The ECUs for each motor are different and often you can buy ECUs chipped to run your motor. The P28 is a common ECU choice for the OBD1 motors. Note that the ECU and distributor need to share the same OBD code to be compatible.
13. ECU Pins – I suggest getting some spare plugs and/or a conversion harness. For anyone running a VTEC motor, regardless of OBD, you will need extra wires put into the ECU. And if you are running a DPFI model, you will need to add the extra wires to convert to MPFI for any B series swap.
Light flywheel and short ratio tranny is key here. If you are keeping the engine stock and reliable, you will enjoy the B20Z much more than the b16.
Definitely agree. Well sort of. I love VTEC. I'm a fanboy. I'd rather drive my B16A around then any non-VTEC motor. Anyways. The B20Z with some half decent headers/exhaust and the B16/GSR trans would be very nice for a daily. Don't do anything to the motor aside from that and it will be very very nice. I believe they only rev to 6500 RPM or so though. But they make more torque than a B16. And that's just about all that matters when you're driving in the city.
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Save some money and keep it sohc. www.d-series.org for more info...
OP, if you need OBD0 parts for your B16 send me a PM. I have a distributor and 2 ECUs from my OBD0 B16A I am trying to sell.
both are reliable, if you don't mind a slight drop in fuel economy i'd go with the b16 and convert to obd1, because parts are easier to find for obd1/2 b series swaps, and most shops wont tune obd0
b16's, while it is true the don't make much more power than their sohc counter part, are more boost friendly and respond better to NA bolt on mods. you can reliably make 300whp all day on a stock healthy b16, and in our cars that's WAY more than enough power for street
b16's, while it is true the don't make much more power than their sohc counter part, are more boost friendly and respond better to NA bolt on mods. you can reliably make 300whp all day on a stock healthy b16, and in our cars that's WAY more than enough power for street
both are reliable, if you don't mind a slight drop in fuel economy i'd go with the b16 and convert to obd1, because parts are easier to find for obd1/2 b series swaps, and most shops wont tune obd0
b16's, while it is true the don't make much more power than their sohc counter part, are more boost friendly and respond better to NA bolt on mods. you can reliably make 300whp all day on a stock healthy b16, and in our cars that's WAY more than enough power for street
b16's, while it is true the don't make much more power than their sohc counter part, are more boost friendly and respond better to NA bolt on mods. you can reliably make 300whp all day on a stock healthy b16, and in our cars that's WAY more than enough power for street
I definitely agree with the second part. They have more room to expand in the future than the D-series does. And the DOHC is definitely a break through as far as the engineering is concerned. For about $5,000 you can put a B16 in your EF and boost it to 300 whp. That's what I did and that included the orginal cost of the car ($1500).
I currently have a 89 civic dx sedan and I have the original D15b and I was wondering if doing an H series swap or B18c but leaning more towards the H23a just want to know what do I got to do to make it possible for that swap
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Red_Si
Honda CRX / EF Civic (1988 - 1991)
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Jul 17, 2004 10:54 PM



