I have a 91 Civic LX with bad engine (D15B2), just purchased a wrecked 91 with a D16A6 engine both are 5 - speed. Can I swap these engines out with no major problems or wiring issues. Please help.

 

that swap is real easy, everything is pretty much the same and interchangeable,

 

the motor swap is a direct bolt in affair. but wiring is different.

you will have to do a 'dpfi to mpfi" swap. you will also need to get a pm6 ecu to run the d16a6 properly

 

if you're just swapping this in as a replacement motor,then re-use everything from the old motor,,distributor,wiring,intake manifold,injectors,etc,etc........

If you want to swap in the complelet motor how it is in the si ,you'll have to convert to multi point fuel injection