Vehicle Specs: â€¢ 1987 Honda Civic STD Hatchback â€¢ 4 Speed Manual Transmission â€¢ Stock aside from clutch, intake and exhaust, and Engine Specs: D13A2 Found in 1984-1987 USDM Honda Civic/CRX 1.3 â€¢ Displacement: 1342 cc â€¢ Power: 60 hp @ 5500 rpm â€¢ Torque: 73 lb*ft @ 3500 rpm â€¢ Bore: 75 mm â€¢ Stroke: 76 mm â€¢ Fuel Control: Carburetor â€¢ Valve train: 12v I have been driving my ol 1987 Honda Civic for nearly 10 years now and have noticed some troubling symptoms starting to develop over the last year or so. The motor runs like crap when its cold out and acceleration is getting more and more jumpy. I have started to see more and more oil on the #3 spark plug and I am betting that its compression is shot although I haven't tested it yet. The valve train on the motor is getting damned noisy as well so I am betting my valve guides and seals are worn out. I guess after 20 years of stalwart performance, the motor has every right to be a little worn... :worthyp: Anyway I have a couple thousand bucks to play with and I have been considering 2 options: 1. Find a used head (maybe a 16v head from a D15A2?) and give it a good rebuild and PnP and put it on when I've got it just right (and hope the bottom end is ok). 2. Find a used motor that will mount up with minimal modification and rebuild it over time. New pistons, seals, bearings, balanced crankshaft etc.. If you have the motor in hand before the vehicle needs it, theres a lot you can do to add performance. I am sure I could find another D13 to put in but if I am going to go to the trouble of pulling the motor, I would really prefer to put in something a little beefier. After some research, my first thought is the following motor: D15A2 Found in: â€¢ 1987 USDM Honda Civic/CRX 1.5,â€¢ 1987 USDM Honda Civic/CRX HF â€¢ Displacement: 1488 cc â€¢ Compression: 9.6:1 â€¢ Power: 76 @ 6000 rpm â€¢ Torque: 84 lb-ft @ 3500 rpm â€¢ Bore: 74 mm â€¢ Stroke: 86.5 mm â€¢ Fuel Control: Carbureted, CVCC It is carbureted like my existing motor so I wont have to do an overhaul of the fuel system. Since it came in the same year and body style of civics, I cant imagine the mounts could be all that different. As far as the wiring and vacuum systems go tho, I really have no idea. Its like Medusa's head under my hood with all these emission controls and stupid vacuum lines. Anyway, will this D15A2 mount into my D13A2 shell? Is there a better motor that will mount easily? If the swap is going to be a nightmare, will the D15 16-valve head mount to my D13A2? Is there a superior head I could choose? Much thanks for reading all this. If theres any more information I can provide just let me know. I love my Honda like a member of the family and would love to have it around at least a couple more decades.