I have 93 civic 1.5B7 , manual trans trying to figure out what engines from what years is compatible, just plug n play. Don’t wanna change the harness or change mounts.

 

The D15B7 came in 92-95 Honda Civics, so for the most direct/easy replacement, you'd need to get a D15B7 from those years. It doesn't matter if the engine is from an auto or a manual. If from an auto, you'll just need to take your original flywheel and flywheel bolts and move them over to the new engine.

You could also swap in a D15 (non-VTEC) from either a 88-91 Civic or 99-00 Civic. You'd need to move over your original intake manifold and distributor, and maybe the engine post mount that's under the timing belt cover.

 

As DaX mentioned, only the B7, B2 or the JDM non vtec D15B fits your criteria. The 92-95 came with D15B7, D15Z1, D16Z6 (CDM D series) and in the US D15B8. Their was an SiR and USDM Si that came with a B16 dual over head cam but it's expensive to this day.

Mounts are engine specific and they go into the frame rails without issue. There is only 2 different mount styles and it doesn't affect you at all for engine swaps when it comes to the D's.

Where you limit yourself is the harness bit. To do Vtec or Vtec-E you have to run a a touch more wire and swap the ECU. Other than that, it's plug and play. The D15B8 uses a one wire O2 sensor if I recall and the D15Z5 uses a 5 wire unless it's California spec. All other 92-95 used a 4 wire O2 on the D's. Not sure what the B16 used, I would hazard a guess it was also 4 wire.

 

I was told by a JDM distributor that a 1.5 or 1.6 would work as long as it was a non vtec. My problem at hand is I can’t find a 1.5B7 that I know is good, everyone I’ve found is from a private party w/ no warranty of course & can’t hear it run due to not being installed , trying to find an alternate @ the cheapest route. So I’m looking for something that has same mounts & harness plugs into w/ using current ECU. Is the engine from a 99 to 00 1.5? Will it matter it’s OBD2 when i have OBD1?

 

Yes, I was giving advice for the easiest / most direct plug 'n play option.

The JDM distributor is correct - any SOHC D-series long block from 88-00 will bolt right up. To keep from having to do any wiring, you should do as they say and stay away from VTEC engines. If you go with a 1.6L engine, it is possible for it to run on the original 1.5L ECU, though it may not be ideal. OBD0 vs OBD1 vs OBD2 will not matter, so long as you swap over your original intake manifold (with all the sensors), your original distributor, exhaust manifold, and alternator to the new engine. FIn some instances you may have to either extend wires for the radiator fan switch, or you may have to swap over the thermostat housing to maintain your original fan switch location. There may be other minor differences / things you'll need to address. Crank pulleys may be different.

 

Only the del sol vtec came with a b16 in the US market, no 92-95 si had them. All 92 and 93 US Civics come pre-wired for vtec from the engine harness connector to the ecu so no need to run additional wire into the car, just for the engine harness. Changes in o2 wiring needed for cx and vx models.

For 92/93 you could install a complete d15b7, d16z6 or b16a3 if you had the matching ecu and run 3 wires to the shock tower connectors.

 

Im looking for the easiest plug n play & didn’t plan on going to a vtec. I hate to drill the same question over n over just wanna make sure before I go buy one. I’ve had few issues with this civic already n pissed away more $$ than I like to. So any 88 to 00 1.5 or 1.6 non vtec will plug/bolt up. I’ve noticed the 1.5 from the early 90’s is hard to come by n my area n don’t wanna order one unless I have to.

 

No worries - I understand you want to be clear.

I also want to be clear - If you don't go with another D15B7, there will likely be some parts you'll have to swap over from your existing engine onto the new one to make it work. You may end up with extra sensors on the engine that are not used. "Easiest" would be another D15B7 - that isn't necessarily the easiest to find nor will it necessarily be the cheapest option that will work.

 

I know for sure that all '92 Civic chassis were pre-wired for VTEC whether it was used or not... I wasn't aware that the '93's had it as well. I was thinking that Honda decided to save a few pennies on chassis harnesses in the '93-95 model years and only included the VTEC wires on the EX and Si versions.

 

Engine sensors such as?? Nothing that’ll effect the engine functioning normally? I’m thinking going to the 1.6 from 93 to 95 cause they’re plentiful compared to the 1.5B7. N one of the previous threads it was said a 88 to 00 would work w/ my intake n distributor maybe couple other things I would assume. I figured going OBD1 to OBD2 would require more than sticking to OBD1 or does it not matter? I was guessing you’d have to change ECU or harness to make that happen which if I was going do all that I’d K swap it or something

 

OBD0 D-series has the radiator fan switch on the back of the block. If you used one of these, you'd have to swap over your thermostat housing to use the OBD1 fan switch, or you could extend wires.

Some OBD2 D-series have a knock sensor, which wouldn't be used with your OBD1 ECU.

 

Another question man before I go spending any $$. Will my trans bolt up to all engines mentioned above or would I need to get the trans too.

 

Yes, your transmission should work fine.

 

What should the compression b per cylinder on a 1.5B7

 

Read the service manual

 

This is the information I was searching for. Thank you big time!
I just bought this 92 DX hatchback. It has a "jdm" D15B motor and am trying to figure out all the nuances. It runs but not perfect so I'm researching what to look for to get it proper.
D15B block, non vtec head. Need to figure out what distributor is installed and timing belt. It's got terrible gas mileage for a 1.5L. 😆 runs strong until I hit a incline then it bogs a little and have to drop into 4th gear to keep speed