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View Full Version : 85 SEI a20 swap.



Christofur
03-26-2011, 07:29 PM
so i bought a a20a3 from the yard today
Pics:

http://christofurmay.me/IMG/a20a3/DSC03336.JPG
http://christofurmay.me/IMG/a20a3/DSC03337.JPG
http://christofurmay.me/IMG/a20a3/DSC03338.JPG

it came with no throttle body or a distributor. no flywheel but when i have been reading on here im going to want to use my on my ES3(right:confused:)


so now what different types of throttle body's can i or should i use since i have to but one anyways.

as far as the distributor well 2genguy you might have to help me out with the megajolt set up.

also i have a question about manual steering. is the only thing i need is the manual steering rack or is there more to it then just that.

2drSE-i
03-26-2011, 07:39 PM
so i bought a a20a3 from the yard today
Pics:

[IMG]http://christofurmay.me/IMG/a20a3/DSC03336.JPG[/IMG-]
[IMG]http://christofurmay.me/IMG/a20a3/DSC03337.JPG[/IMG-]
[IMG]http://christofurmay.me/IMG/a20a3/DSC03338.JPG[/IMG-]

it came with no throttle body or a distributor. no flywheel but when i have been reading on here im going to want to use my on my ES3(right:confused:)


so now what different types of throttle body's can i or should i use since i have to but one anyways.

as far as the distributor well 2genguy you might have to help me out with the megajolt set up.

also i have a question about manual steering. is the only thing i need is the manual steering rack or is there more to it then just that.

LOTS of throttle bodies work. Pretty much any B series and a few D-series throttles will fit on that manifold no problem.

2ndGenGuy
03-28-2011, 09:25 AM
Since you're keeping the ES wiring harness, you should be just fine bolting your ES distributor right onto it. Use your ES flywheel/clutch/transmission, all should bolt onto the A20.

If you're using all the stock components, don't bother with the MegaJolt. I'm not sure if the stock ECU would freak out not having a distributor there... There's probably going to be a bunch of little things that won't connect up right. Be prepared to do a little wiring. Might pick up an 88 Prelude service manual, and the 85 Accord manual in case you run into an unknown component and need to figure out where it goes or connects. If you want some help again, I can come up.

Also, really random running into you up in Auburn, but I guess you live just right there. So, it's probably not that weird. Just good timing. :)

carotman
03-28-2011, 10:03 AM
Could you use your current intake manifold?

Christofur
03-28-2011, 10:12 AM
Since you're keeping the ES wiring harness, you should be just fine bolting your ES distributor right onto it. Use your ES flywheel/clutch/transmission, all should bolt onto the A20.

If you're using all the stock components, don't bother with the MegaJolt. I'm not sure if the stock ECU would freak out not having a distributor there... There's probably going to be a bunch of little things that won't connect up right. Be prepared to do a little wiring. Might pick up an 88 Prelude service manual, and the 85 Accord manual in case you run into an unknown component and need to figure out where it goes or connects. If you want some help again, I can come up.

Also, really random running into you up in Auburn, but I guess you live just right there. So, it's probably not that weird. Just good timing. :)

ok i was hoping my distributor would work.

then only thing i might have trouble is the getting it running part.

when i say the lotus i was like i wonder if thats john.....nnnaaahh then bam you pull up. :eek:

Christofur
03-28-2011, 10:12 AM
Could you use your current intake manifold?

im hoping to use it and just put on a new throttle body.

i just don't know how big to go.

2ndGenGuy
03-28-2011, 12:03 PM
The ES intake manifold will not swap to the A20. The ES head uses circular ports, while the A20 uses the oval ports. This is the only caveat with this engine swap. The oval ports are way bigger and can flow more to the valves, hence the extra 20hp.

carotman
03-28-2011, 12:27 PM
The ES intake manifold will not swap to the A20. The ES head uses circular ports, while the A20 uses the oval ports. This is the only caveat with this engine swap. The oval ports are way bigger and can flow more to the valves, hence the extra 20hp.

Ah this sucks. I just checked the parts diagram and the ports are indeed rounder :(

I was asking this because the easiest route would be to use the ES wiring harness and use an 86-87 EFI computer. It can still be done tough but I'd use an 86-87 Intake mani.

Christofur
03-28-2011, 07:43 PM
i thought you meant on the a20.

I might just buy this throttle body off this guy
http://www.3geez.com/forum/showpost.php?p=962653&postcount=5


Ah this sucks. I just checked the parts diagram and the ports are indeed rounder :(

I was asking this because the easiest route would be to use the ES wiring harness and use an 86-87 EFI computer. It can still be done tough but I'd use an 86-87 Intake mani.

i was looking at my ES wiring harness and the one on the a20 and they are almost the identical.


so does anyone know about power steering to manual steering? is it just buy a manual rack and install?

Christofur
03-31-2011, 09:54 AM
well today i took off the bottom pulley and where the pulley slides on its cracked. so going back tomorrow to get another motor. :crying:

carotman
03-31-2011, 12:11 PM
The crankshaft is cracked?

Christofur
03-31-2011, 07:08 PM
where the bottom pulley slides on the motor. right next to the woodruff key its broke

they glued the pulled on so it would stay....

AF_H1VLTG3
04-01-2011, 05:20 AM
where the bottom pulley slides on the motor. right next to the woodruff key its broke

they glued the pulled on so it would stay....

I'm sorry to hear that. Do you want me to send Tony over to break somebody’s legs?

carotman
04-01-2011, 05:50 AM
Do you have any pictures of this? It's probably repairable

Christofur
04-01-2011, 06:44 AM
well its still under warranty so ill let them deal with it and get another one.

Ichiban
04-02-2011, 07:26 PM
I've got a sweetheart motor with 160KM on it, it's a BT that I got years ago when I was gonna A20 swap my car. It came with the entire wiring harness and computer. Shame you had to deal with this, I woulda given you that motor for what I paid for it.

http://i82.photobucket.com/albums/j263/guyhatesmycar/100_0843.jpg

It's in Castlegar BC, inside a garage. Covered in dust and likely beer cans, but otherwise should be flawless.

Christofur
04-02-2011, 07:58 PM
I've got a sweetheart motor with 160KM on it, it's a BT that I got years ago when I was gonna A20 swap my car. It came with the entire wiring harness and computer. Shame you had to deal with this, I woulda given you that motor for what I paid for it.

http://i82.photobucket.com/albums/j263/guyhatesmycar/100_0843.jpg

It's in Castlegar BC, inside a garage. Covered in dust and likely beer cans, but otherwise should be flawless.

they ended up by giving me a BT. only thing i need is the throttle body. i bought one off an 89 accord but its doesn't match up to the BT intake. so i might just go get the intake mani off the 89 at the yard.

Ichiban
04-03-2011, 08:38 PM
they ended up by giving me a BT. only thing i need is the throttle body. i bought one off an 89 accord but its doesn't match up to the BT intake. so i might just go get the intake mani off the 89 at the yard.

I've also got both a BT intake manifold complete as well as a complete dual runner intake. Just so you know, see what the junkyard says. I'd prefer to get rid of the A20A3 dual runner intake. Has injectors, everything.

Christofur
04-05-2011, 11:46 AM
I was at pick n pull and found a TB.
I changed the water pump, oil pump seal, oil pan seal, timing belt, valve cover seal and i still need to clean it before it goes in =>.
so its pretty much ready to be put in. I'm planing on taking my ES motor out on Saturday hopefully Washington weather is nice to me.


http://christofurmay.me/IMG/a20a3/DSC03486.JPG
http://christofurmay.me/IMG/a20a3/DSC03489.JPG

Christofur
04-13-2011, 12:03 PM
well i got it in a running just one Major issue.

when i go to drive it, it sputters and back fires some.
im using my SEI dist. and ECu idk if that would have anything to do with it.

Fixed Running good Just cant get it to idle right. does the idle bounce

Christofur
04-17-2011, 09:26 AM
ok so have completed the swap. :thumbup::lol::rofl::bowrofl:;):o:flash::D
http://christofurmay.me/IMG/3geez/A201.JPG
http://christofurmay.me/IMG/3geez/A20.JPG

Things i had to use off my ES3 were...Alternator and alt. Mount. Power steering/mount, thermostat housing, the tube from the water pump?(dont know what its called) distributor, Engine wiring harness,Flywheel and clutch, all the motor mounts even then one under the timing belt cover.

SZfiftyfour
04-17-2011, 09:40 AM
Sweet :thumbup:! Now you just need obd1 and turbo :)

Dr_Snooz
04-17-2011, 10:50 AM
Nice work! How fast is it now?

Looks like you have some fun cars sitting around there in addition to the Accord.

Christofur
04-17-2011, 08:29 PM
Nice work! How fast is it now?

Looks like you have some fun cars sitting around there in addition to the Accord.


It has alot more power i don't feel like I'm giving it alot of throttle like my es3

MessyHonda
04-17-2011, 10:38 PM
nice to see that you got a hp increase

Christofur
04-18-2011, 08:19 PM
Sweet :thumbup:! Now you just need obd1 and turbo :)

i think turbo is going to be next winter project.


one thing i didnt do way have my heater on when i first started the motor so now i have not heat.

is there a way to get it to work? or maybe i hooked something up wrong idk.

2ndGenGuy
04-19-2011, 07:40 AM
Glad you got it running man! So what did you have to do to fix the sputtering?

Also as far as the heater goes, just turn the heat on in the car, leave the radiator cap off, let the car warm up and just top up the radiator. You can also bleed it out via the bleeder valve once you get some coolant circulation.

Christofur
04-19-2011, 10:02 AM
Glad you got it running man! So what did you have to do to fix the sputtering?

Also as far as the heater goes, just turn the heat on in the car, leave the radiator cap off, let the car warm up and just top up the radiator. You can also bleed it out via the bleeder valve once you get some coolant circulation.

the sputtering was some bad plugs i used a pair i have laying around so they were bad i put new ones in and it worked..


ill try that today.

Christofur
06-02-2011, 02:53 PM
so my idle still bounced since the swap.. so made a block off plate.

http://christofurmay.me/IMG/DSC03873.JPG

Ichiban
06-02-2011, 04:05 PM
what the hell was that stupid thing on the back of the manifold? the one with all the coolant lines running to it?

2ndGenGuy
06-02-2011, 11:17 PM
Wasn't that an IACV of some sort? So I take it you have no high idle when cold? You just adjust the cable and you're good to go? Pretty sweet! Does it throw a code though?

Christofur
06-03-2011, 01:39 AM
Yes it was an IACV it never really worked right always had an idle bounce when its warming up or even when i was driving for awhile. i tried to bleed the coolant system so many times and still did it. i really didn't feel like buy a new IACV for 80 bucks so i was like fuck it its getting deleted. idk about the code parts since my EGR valve doesn't have vacuum to it so that is throwing a code.
i haven't checked yet to see if there's a different one.

i don't have a high idle on cold start just have to hold my foot on the gas for a min. or two doesn't bother me really i didn't have to change the cable any. i was more annoyed with the idle always changing.

maybe once winter hits again ill go buy a new IACV.