odd engine or already swapped/converted?

[Vector]

a buddy of mine is giving me a 86 prelude that looks to have a 2.0L PGFI 12Valve SOHC engine in it(maybe a20a1 or a3 block?).
Did these cars come with this engine with EFI or was it converted/swapped away from carbs, maybe even a special edition or somthing?

frame and body is rusted so bad that it doesnt pass inspections, there for hes willing to give it to me. He did a pretty massive burn out with it and pretty much burned the front tires off of it. Seems like it has alot of power. Idles good and runs smooth.

I own a 88 Accord DX, so i was hoping i could swap the EFI engine into my car using the guide that is provided here.
if it is a a20 ... i would like to keep my tranny as it is new and have new cv's aswell, if posible

[gfrg88]

dude man i would suggest you get ready to be flamed...

[Vector]

lol... i may have been looking in the wrong spots, but i couldnt find much on the prelude it was mfg'd on 01/86 so i guess it was a possibility that it did come like that. i am somewhat new to this since i used to own 3 escort LX's.

[2drSE-i]

yes its the same engine, a20a3. yours is an a20a1. yes you can swap using hte guide, its the same engine components. use the search function, it is your friend

[Vector]

wicked ... thanks, thats all i needed to know pretty much, i havent seen to many preludes like that around where i am or just dont know the right people.

[2drSE-i]

yeah those preludes are pretty rare. most of them are carbeurated. as long as it has a throttle body and it says PGM-FI on it, your good

[Strugglebucket]

i think it's probably a BT. isn't that what the si had?

[Vector]

yea PGM-FI is what i meant and 12valve writen on the valve cover. the guy siad that it was aparently swapped, but it didnt look like it to me. i will see it again tomorow during the day i hope this time ... i will try to take some pics and see if i can find a number off the engine to. i thought the SI was DOHC

[b8er]

oo buddy, was this from a white lude? im from kelowna if it is i know the car and the guy who swapped it and the motor, if it is the car defiantly let me know, add me to msn [email protected] or PM me

[2drSE-i]

BT's were a3's werent they? just different codes?

[Strugglebucket]

yeah.

[2drSE-i]

thot so, yeah ur swap is no prob, use the how to

[b8er]

just keeping you guys up dated, i was talking to the man yesturday, he lives near me and i was looking at some pics he sent me, definatly looks a20, i never new the BT's were a20's just a different code, i think he said hes getting the car pretty soon, il get him to find the actually staped code and we will all know for sure

[Vector]

horray.... its a BT1 had a closer look today.

[racerx]

that's an A20A3 engine then. I'd get to swappin that.

[carotman]

Unless the engine has less milleage than yours, I would't use it. The wiring harness is a bit different than the Accord, the fuel lines and fuel pump is different.

You can swap the manifolds and parton on your current engine and use 86-87 Accord stuff to complete the conversion (I would use 88-89 stuff IMO tough).

One thing for sure, use that Prelude tranny on your Accord!

[b8er]

so is there anything different between the engines? just the staped code? compresion ratio? if you were to just swap the heads would you incounter any problems, ie. pistons hitting vales, that kinda stuff, just curios

[speedpenguin]

you'd be fine, i think

[Vector]

the engine in the lude has less 7000k less than the accord. either way i will be probably looking at at rebuild soon since both cars are around 300,000k.

[b8er]

ok so i went down to my buddys dads machine shop and checked the gasket books, and just to clarify the a20a1/a2/a3/a4/BS/BT1 all share the same gaskets so that pretty much means they are all the same motor i would asume anyways, so yes i just wanted to tell you all and put the info on the site just incase it wasnt already

[Vector]

ok so if i swap just the manifold and the throttle body and i going to get the same power gain as the preludes bt engine? or should swap everything including tranny... the prelude engine does have about 7000ks less than my accord. when i drove the prelude to my house from the lot it feels like it has alot more power. could be also that my accords carb royaly untuned ... i dont know.

[carotman]

Tha A20A1 has a higher compression ration than the BT1

[2drSE-i]

its a horrible tune, other than that the prelude has a better tranny. but yes you will have the same power because basically you are converting your engine into the same engine.

[Vector]

so if the a20 has higher compression than the BT.... then i would be better off just to convert mine to efi rather than just swaping it.

thanks i now go make plans.

[Ichiban]

my honda builders book gives me a CR of 9.3:1 for the 88 and 89 A20A3. i would assume the 87 A20A3 and the 86 BT1 would be the same, the only performance change coming in 89 with a new exhaust manifold, yes no?
correct me if i am wrong.

Kelowna eh? im about 4 hours east in castlegar...building my bt1 powered 2g hatch.