91 Accord looking to swap f22b or f23a.
#1
Honda-Tech Member
Thread Starter
91 Accord looking to swap f22b or f23a.
I recently swapped what I thought was a good engine into my car... (alittle over 200 miles ago) At least until it randomly decided to blow up on me so I am looking at buying one or the other from hmotorsonline and would like to know other than the complete engine what will I need to do to get this car running. I know I will need an ECU and harness or adapter. Will my auto trans work with it? I know it will bolt up but my trans has a separate TCU. Inform me or at least point me in the right direction.
#2
Re: 91 Accord looking to swap f22b or f23a.
I recently swapped what I thought was a good engine into my car... (alittle over 200 miles ago) At least until it randomly decided to blow up on me so I am looking at buying one or the other from hmotorsonline and would like to know other than the complete engine what will I need to do to get this car running. I know I will need an ECU and harness or adapter. Will my auto trans work with it? I know it will bolt up but my trans has a separate TCU. Inform me or at least point me in the right direction.
I've got a 91' Accord with a 95' Accord AT in it and it works perfectly, no need for new TCU.
If the F22B is Vtec you probably will need to hook that up and get another ECU, other than that I hear its easy. Have you considered maybe rebuilding the engine you blew out or another one? I rebuilt mine for the first time and got it running good, takes time and commitment though. Not that hard if you know what you're doing.
#3
Honda-Tech Member
Thread Starter
Re: 91 Accord looking to swap f22b or f23a.
First off thank you for the response.
I got the engine from a salvage yard in my area and the thing ran great while it did run. I was driving home and it made a funny noise (sounded like a belt breaking off and it stopped running). Upon further inspection the spark plug in cylinder 1 is smashed, cylinder 3 shoots coolant out of it while turning it over (plugs removed of course) and none of the cylinders we tested (we didnt test 3 because of the coolant) come back with no compression. I am returning this engine to the salvage yard and getting my money back.
Now, the reason I am asking about the f22b is I need to get the car running asap to take my mom to doctor appointments and such, and with taking care of her (recent leg amputee needing help around the house)I don't feel like and more importantly don't have time to tear down and rebuilding an engine. I have been doing some research and am leaning more towards the f22b. The only reason I am looking for this is because the newer engines are the 'cheaper alternative' (the f22b sohc 94-97 being $545 + shipping, and the f22a 90-93 being 795 + shipping). I'm trying to figure out what all I will need to do this swap to calculate if it will be cheaper once everything is done. I figured I would need an ECU and to wire up for V-tec, I know the trans will bolt up, I just didnt know if there would be an issue with the TCU and the OBD2 ECU.
I am not a complete 'n00b' when it comes to repairing these things, it's when you start frankensteining things I like to make sure that everything will still function properly.
I got the engine from a salvage yard in my area and the thing ran great while it did run. I was driving home and it made a funny noise (sounded like a belt breaking off and it stopped running). Upon further inspection the spark plug in cylinder 1 is smashed, cylinder 3 shoots coolant out of it while turning it over (plugs removed of course) and none of the cylinders we tested (we didnt test 3 because of the coolant) come back with no compression. I am returning this engine to the salvage yard and getting my money back.
Now, the reason I am asking about the f22b is I need to get the car running asap to take my mom to doctor appointments and such, and with taking care of her (recent leg amputee needing help around the house)I don't feel like and more importantly don't have time to tear down and rebuilding an engine. I have been doing some research and am leaning more towards the f22b. The only reason I am looking for this is because the newer engines are the 'cheaper alternative' (the f22b sohc 94-97 being $545 + shipping, and the f22a 90-93 being 795 + shipping). I'm trying to figure out what all I will need to do this swap to calculate if it will be cheaper once everything is done. I figured I would need an ECU and to wire up for V-tec, I know the trans will bolt up, I just didnt know if there would be an issue with the TCU and the OBD2 ECU.
I am not a complete 'n00b' when it comes to repairing these things, it's when you start frankensteining things I like to make sure that everything will still function properly.
#4
Honda-Tech Member
Thread Starter
Re: 91 Accord looking to swap f22b or f23a.
Also I think I read somewhere the flexplate is different? (although I might have read that about the f23 :/) will the flexplate on the f22b work?
#5
Re: 91 Accord looking to swap f22b or f23a.
When it's all said and done it's going to be cheaper to keep just get the same engine...considering you're on a budget and time is an issue. To go another route you will need another ecu and to wire in some stuff....some things that you simply need time to prepare for. I'm just giving my opinion tho. If it was me, I'd go h22a again but it took me a lot of time to work out the kinks.
#6
Re: 91 Accord looking to swap f22b or f23a.
See if the yard will take it back. I heard if you snapped the timing belt you likely just bent some valves. If that's the case then I would just pull the head and replace them. If all else is well with the bottom end, no cylinder wall scoring or piston breakage, I would do that. Take it to a machinist and resourface it and replace the valves. Also get a new head gasket.
I believe a leak down test can tell you if you broke valves or if you broke a piston, try and have one of those done before you go on buying another engine. If during the test you hear air coming out of the oil fill up cap then it means the pistons are shot. If air is coming out of the intake manifold then it is the intake valves that are bent, and if its coming out of the exhaust then its the exhaust valves.
EDIT:
Did you check to see if the timing belt was actually snapped or fell off?
Last edited by Mishako129; 01-30-2013 at 11:45 PM.
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