Obd1 to Obd2
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From: Dallas texas
Obd1 to Obd2
ok i got a 1996 accord (OBD2) 5speed f22b2 with a rod knock coming from my engine, however i just so happen to have a 1995 accord (OBD1) automatic f22b2 the body is shot so i should be able to just swap the engines correct? Both non vtec. Any positive input is appreciated....
Honda-Tech Member
Joined: May 2018
Posts: 1,194
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Re: Obd1 to Obd2
If they are the same, then yes, just switch, but make sure when you pull the old one you put those engines side by side and move over all the non-block items: intake manifold, exhaust manifold, o2 sensor (if attached), sensors, etc. To make sure. This way it will work flawlessly on startup. It's all the lttle things that get you.
Other thoughts, just suggestions, not requirements: go over the engine while out, replace any gaskets that could be annoying later: oil pan gasket, intake gaskets, etc. Also, while it's out, get into the engine bay and see if anything else looks like it might be easier to replace with no engine in the way: for example, possibly steering rack, boots, heater core hoses, motor mounts.
Other thoughts, just suggestions, not requirements: go over the engine while out, replace any gaskets that could be annoying later: oil pan gasket, intake gaskets, etc. Also, while it's out, get into the engine bay and see if anything else looks like it might be easier to replace with no engine in the way: for example, possibly steering rack, boots, heater core hoses, motor mounts.
MM Gruppe B
Joined: Feb 2009
Posts: 7,025
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From: 94577/Gaillimh
Re: Obd1 to Obd2
94/95 and 96/97 do have some minor differences with regards to ignition.
94/95 has the TDC, CKP and CYP sensors in the distributor.
96/97 has only the CYP sensor in the distributor, the other two sensors are moved down to the front of the crank on the oil pump housing.
If you put a 94/95 engine into a 96/97, you will need to transfer the later OBD2 Oil pump hosing and sensors to the older engine, as well as changing the distributor from the early to the later model.
I believe the crank sprocket for the timing belt is also different and will need to be reused from the OBD2 engine to the OBD1 engine as it has the provisions for the relocated cranks sensors to work.
I don't recall if there are any other differences, but to keep it simple later, verify the 96/97 components are the same as the earlier model, if not change them out.
AT Throttle bodies have a different bell crank assembly than MT Throttle bodies. I would opt to simply use the cars original intake on the 'new' engine to keep things simple.
Exhaust manifolds are the same through out the run. IMO if you don't have to remove the exhaust manifold, dont. The B2s don't seem to suffer the same cracking issues as found on the B1s, but I would not tempt fate. If you don't have to remove it. Leave it alone.
94/95 has the TDC, CKP and CYP sensors in the distributor.
96/97 has only the CYP sensor in the distributor, the other two sensors are moved down to the front of the crank on the oil pump housing.
If you put a 94/95 engine into a 96/97, you will need to transfer the later OBD2 Oil pump hosing and sensors to the older engine, as well as changing the distributor from the early to the later model.
I believe the crank sprocket for the timing belt is also different and will need to be reused from the OBD2 engine to the OBD1 engine as it has the provisions for the relocated cranks sensors to work.
I don't recall if there are any other differences, but to keep it simple later, verify the 96/97 components are the same as the earlier model, if not change them out.
AT Throttle bodies have a different bell crank assembly than MT Throttle bodies. I would opt to simply use the cars original intake on the 'new' engine to keep things simple.
Exhaust manifolds are the same through out the run. IMO if you don't have to remove the exhaust manifold, dont. The B2s don't seem to suffer the same cracking issues as found on the B1s, but I would not tempt fate. If you don't have to remove it. Leave it alone.