a20a3

[1987AccordLx-i]

ok.. wikipedia says theres two versions of the a20a3. one being the 114hp version and the other being 122hp.. how do you know which one you have? wiki says that the 88-89 accords have the 12-valve 122hp engine and the 86-87 have 114hp but doesnt say the valves

i have an 87 and it says 12 valve on the intake manifold.. do i have the 122hp engine or the 114hp one?!?!:wtf:

[ghettogeddy]

ok.. wikipedia says theres two versions of the a20a3. one being the 114hp version and the other being 122hp.. how do you know which one you have? wiki says that the 88-89 accords have the 12-valve 122hp engine and the 86-87 have 114hp but doesnt say the valves

i have an 87 and it says 12 valve on the intake manifold.. do i have the 122hp engine or the 114hp one?!?!:wtf:

114
motors are almost identical just the 88-89 was tuned different

[1987AccordLx-i]

114
motors are almost identical just the 88-89 was tuned different

how would i tune mine to get 122hp? if its possible...

[A18A]

theres a few differences (manifolds etc..) pays to search

[Civic Accord Honda]

the intake manidolf and exhuast manifolds were diffrent and mayby ECU

[1987AccordLx-i]

the intake manidolf and exhuast manifolds were diffrent and mayby ECU

so manifold swaps would do the trick? awesome.. thanks guys ill look into it

[Demon1024]

it'll be more than just that if you do the intake mani to. it has a couple extra pieces/sensors on it. Iacv dual, stage intake. hell maybee it's just those two things. but to control them you'll need the ecu/black box as well. but with just the exhaust mani you'd just have to plug up an extra o2 hole

[MessyHonda]

if you want something better i would just upgrade all together.

http://www.3geez.com/forum/showthread.php?t=49453

[1987AccordLx-i]

if you want something better i would just upgrade all together.

http://www.3geez.com/forum/showthread.php?t=49453

alright.. intake mani is out of the question haha.. so what do you guys think of this?

head port/polish and exhaust mani? worth it?

[forrest89sei]

Port & Polish and a Header make the most sense

[1987AccordLx-i]

Port & Polish and a Header make the most sense

awesome.. thats what ill most likely do.. any ideas of hp gain?

[MessyHonda]

awesome.. thats what ill most likely do.. any ideas of hp gain?

3 whp gain and 30 butt dyno gain

[1987AccordLx-i]

3 whp gain and 30 butt dyno gain

so am i looking at a 33hp gain?

[Bass Man]

I thought one of the bigger differences was the cam...

That's why i specifically asked for an 88-89 EFI engine.

[1987AccordLx-i]

I thought one of the bigger differences was the cam...

That's why i specifically asked for an 88-89 EFI engine.

i could swap the engine for one from an 88-89 year accord but then ill have to change the black box and/or ecu... right?

[Dr_Snooz]

An engine swap for 8 hp? Surely there are easier ways.

[Demon1024]

i could swap the engine for one from an 88-89 year accord but then ill have to change the black box and/or ecu... right?
you'll have to rewire the main harness on the drivers side of the engine to take the new plug and run wires for the iacv. i just got done doing this, unless you need a new engine it's not really going to be worth it. go for a better cam or an air filter if you havent yet.new plugs a ground kit a header can make that much difference, 8hp
ya the cam is different too i forgot that not much but it is.little more aggressive.

[1987AccordLx-i]

you'll have to rewire the main harness on the drivers side of the engine to take the new plug and run wires for the iacv. i just got done doing this, unless you need a new engine it's not really going to be worth it. go for a better cam or an air filter if you havent yet.new plugs a ground kit a header can make that much difference, 8hp
ya the cam is different too i forgot that not much but it is.little more aggressive.

well camming i dont really like because of the rougher unpredictable outcome.. but the headwork and exhaust manifold i want to do

but back to my original statement.. will i be looking at 33+/- hp gain with headwork and exhaust mani swap??




An engine swap for 8 hp? Surely there are easier ways.

now you know what i mean

[Demon1024]

possibly if you do enough head work. port/polish, valves maybee even bigger valves, shave the head. with all that i'm sure you'd gain at least 30hp, only a dyno could tell for sure what the real outcome would be tho. if you've got an 88/89 parts car i'd say go for the intake too. the dual stage runners make a difference in the upper rpm's

[1987AccordLx-i]

possibly if you do enough head work. port/polish, valves maybee even bigger valves, shave the head. with all that i'm sure you'd gain at least 30hp, only a dyno could tell for sure what the real outcome would be tho. if you've got an 88/89 parts car i'd say go for the intake too. the dual stage runners make a difference in the upper rpm's

would i be able to dyno an automatic? ugh i hate auto but i have to wait for the trans swap..

as far as the intake swap.. what would i have to hook up for the runners to function at max capacity? sounds stupid but i want it to work good if i get it

[Hauntd ca3]

the dual intake runners on the b20a black top make quite a diff in the top end pul eh
think the secondaries open at 5k rpm and gives a wee vtec feeling i reacon
i got a k&n pod filter and it gives that vtec intake sound once the secondaries open
sounds cool at the very least and does give a nice smooth bottom end and mid range due to the long primaries and that xtra bit of top end once they open

[MessyHonda]

tha a20a3 has 9.3:1 compression

[1987AccordLx-i]

tha a20a3 has 9.3:1 compression

would changing the compression mess with the motor?

[Bass Man]

You would have to mess with the motor to change the compression...

[1987AccordLx-i]

You would have to mess with the motor to change the compression...

ya i know that but i was asking if it would alter the hp numbers or anything like it

[Bass Man]

Like MessyHonda always says; Higher Compression is always HP gain.

But the difference between 9.1 and 9.3 is only like 1-3 HP.
I need to find someone who does head work around me so I can get my spare A1 head worked on. That's about a 30 HP gain if it is done right.

[1987AccordLx-i]

Like MessyHonda always says; Higher Compression is always HP gain.

But the difference between 9.1 and 9.3 is only like 1-3 HP.
I need to find someone who does head work around me so I can get my spare A1 head worked on. That's about a 30 HP gain if it is done right.

so shaving the head would benefit me in a small way? i want to get my a3's head worked on also cuz im gunna be needing a new head gasket soon so might as well get it all done together..


hey btw.. did you guys know that the a3's can outrun a 98-2000 ford ranger v6? i raced one and i beat it :confused: got me there.. AND my cars auto.. wierd

[oscwrestler]

can you use the FI internals on a carb'd car?

[1987AccordLx-i]

can you use the FI internals on a carb'd car?

i thought the internals were the same?

[Bass Man]

A20's share the same internals. The only difference between the A1 and the A3 is a shallower piston dish. That is where the compression comes from.

Yes, the gain probably wont be noticable if you just shave the head, but if you Port and Polish the head, do a 3 angle valve job, Portmatch intake and exhaust, drop in a Delta 272 and replace the valve springs, you should see a very nice increase in power.

[1987AccordLx-i]

A20's share the same internals. The only difference between the A1 and the A3 is a shallower piston dish. That is where the compression comes from.

Yes, the gain probably wont be noticable if you just shave the head, but if you Port and Polish the head, do a 3 angle valve job, Portmatch intake and exhaust, drop in a Delta 272 and replace the valve springs, you should see a very nice increase in power.

hmm very nice.. would you agree on say 25-30hp gain?

[MessyHonda]

hmm very nice.. would you agree on say 25-30hp gain?



i would say maybe like 15 hp gain and that is if you have the head really done and install some headers with a nice 2.25 inch exhaust

[1987AccordLx-i]

i would say maybe like 15 hp gain and that is if you have the head really done and install some headers with a nice 2.25 inch exhaust

hmm.. bass man said it would be more of a 30hp gain

[MessyHonda]

hmm.. bass man said it would be more of a 30hp gain



ha...you are talking to a guy that has never done it....you should talk to rjudgey here is his link to his bad ass head http://www.3geez.com/forum/showthread.php?t=62046

[Bass Man]

That's who I meant. If you do all the work to your head you can imagine, you will see a 30hp gain... But if you build the bottom end just as well, you can utilize the built head.

I said a very nice gain. I kinda like the low HP engines, cuz you can feel every couple horses you gain. You build you 100hp engine to 150 and it's gonna be night and day. I add 50hp to my 327 and it's like a .2 second gain, haha...

[1987AccordLx-i]

ha...you are talking to a guy that has never done it....you should talk to rjudgey here is his link to his bad ass head http://www.3geez.com/forum/showthread.php?t=62046

see.. i want to build my head like his.. but i know it aint going to be cheap but i want to try to get it as close as i can to his.. my goal is around 150-200hp but thats going to take some real work and time


ok gentlemen... i hear this word going around and i dont know what it means.. whats OPENLOOP?

[Bass Man]

Something Carb'd guys have no business with... My best guess is that is has to do with an O2 sensor, cuz I've heard of "Limp mode" and "Openloop" used in the same sentence before.

FAIL!!@@!!!

I guess OpenLoop is some company or guy who built a sick 88 hatch.

[1987AccordLx-i]

Something Carb'd guys have no business with... My best guess is that is has to do with an O2 sensor, cuz I've heard of "Limp mode" and "Openloop" used in the same sentence before.

FAIL!!@@!!!

I guess OpenLoop is some company or guy who built a sick 88 hatch.

ill find out soon haha...


well guys.. i changed my ECT sensor and the car has a new personality! got a little sensor does alot for these cars.. my idle is so much better and it takes off as smooth as can be.. i thank all of you who helped me find this out if you read my other threads.. but thanks guys