91 Civic HB smoking.

[stanlam]

I have a 91 Civic HB that was smoking(D15B1). Did a compression check and numbers were very low. Pulled apart and done a ring job. Head was cleaned up at the local machine shop(replaced a valve ) New head gasket also. Reinstalled and was smoking even more.Looks like white smoke.Changed out lower end with a D15b7 using the D15b1 head and the DPFI intake. New head gasket and intake manifold gasket. Running smooth and good compression numbers but still smoking. I let it run for 20 minutes and brought RPMs up.( smoking like a freight train) Finally got a fault code #1 for O2 sensor and engine started surging. I dont know the capatibility between a B1 and a B7. Can I put the B7 top back on the bottom and run DPFI left over from the b1 that was in there with the b1 ECU ? I would like to get my little car back up & running. Any help or insight would be greatly appreciated.

[Tony]

Should be able to swap the intake manifold over to keep the DPFI.