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Thread: I'm gonna turbo the A20 in my 88

  1. #1

    Bglad420's Avatar
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    I'm gonna turbo the A20 in my 88

    OK I looked around for a while found vaugne resultd for what i wanted so I'll post a new thread. I'm contemplating turboing my accord and I want to know some things first. My car is an 88 LXi hatch, JDM lights, dx front bumper, header, exhaust, intake etc.


    Questions I have
    1. What size turbos are the best for our cars
    2. How much boost can our cars handle stock?
    3. What mods will I need to do besides make my manifold and piping?
    4. What kind of power gain will I see?
    5. What kind of problems will arise, ecu, etc.

    Thanks
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  2. #2
    LX User paso100's Avatar
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    Re: I'm gonna turbo the A20 in my 88


  3. #3
    LX User ex1z7's Avatar
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    Re: I'm gonna turbo the A20 in my 88

    Quote Originally Posted by AccordEpicenter
    Well lets see...
    my oil lines were $80
    restrictor $10
    Apexi Safc and BTM $225
    450cc injectors $60
    DSM bov $50
    Turbo $160
    Flanges/manifold parts $90
    Charge pipe/Exhaust pipe U bends etc $135
    Silicone couplers/T bolt clamps (top notch stuff) $90
    big Clutchnet clutch: $385
    Custom Coach FMIC $235
    Walbro 255 lph intank $100
    Colder plugs $9

    What else am i forgetting? Thats $1600.
    You could do it for much less though...

    Used Intercooler $100
    Clutchnet Clutch $385
    Colder plugs $9
    Couplers/clamps $40
    Pipe/bends $90
    Manifold stuff $90
    Turbo $100
    Oil lines $75
    restrictor $10
    Apexi Safc $140
    450cc injectors $60

    Thats $1099 and a setup like that could do 7-8 psi easily and run in the 14s if you do it right. After that id reccomend a fuel pump, better managemant or add an MSD btm. Speed costs money, how fast do you want to go?
    Anybody with a pulse and eyesight can get excited looking at $250,000 supercars. It takes a special kind of gearhead to drool over an Accord, Sentra, Corolla or anything else made out of parts found in dumpsters, scrap yards, and along the side of the highway.

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    Re: I'm gonna turbo the A20 in my 88

    I have most the turbo stuff off my buddys SR20DET, but what I need to know is how much our cars can handle what are the specs for an 88 LXi? I need stock compression, fuelpump rate, injector size, any ecu mods needed? Thanks.
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  5. #5

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    Re: I'm gonna turbo the A20 in my 88

    88lxi has compression around 9.2:1
    injectors are probably not big enough. i think 240cc comes to mind, but dont quote me.

    u will need an SACF and something to pull timing and probably an adjustable fuel pressure regulator, at a BARE MINIMUM, for management. there is no such thing as ecu mods for this car, dont even try... u can go standalone or convert to odb1 and have lots of options.

    u can probably roll 8psi around 200whp if properly tuned, which SAFC and BTM wouldnt qualify as properly tuned.

    sean has proved these motors to hold a lot of power if tuned really well, but u will have a hard time replicating his EMS.

    there is 100,000 threads on turbo on this forum. do some research, and then come back and ask ur questions.

    but a SR-T25 is probably a good size of turbo for an a20 IMO

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    Question Re: I'm gonna turbo the A20 in my 88

    Quote Originally Posted by bobafett
    u will need an SACF and something to pull timing.

    u can probably roll 8psi around 200whp if properly tuned, which SAFC and BTM wouldnt qualify as properly tuned.
    Whats an SACF and BTM???? I don't want to tear down the motor for any of this, So my internals should be good enough to 200ish HP?? What Fuel pressure regulators are good for our cars, any direct bolt on kits?? I'm a real stickler when it comes to quality, I only buy Honda parts from Honda for my car, even the plugs. Know anyone with a turbo A20, that I can talk to? Another question, The cross member under our cars, is it hard to get in the O2 housing, or downpipe? And what about the dual O2's? Do they create a problem at all?
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  7. #7
    3Geez Veteran AccordEpicenter's Avatar
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    Re: I'm gonna turbo the A20 in my 88

    oh man... hmm what do you think guys, do i need to get involved in this thread?
    429whp 362wtq A20 TURBO. A20T>*

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    LX User Swap_File's Avatar
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    Re: I'm gonna turbo the A20 in my 88

    When going the turbo route, proper fuel and ignition timing management is very important. You will probably want to do the OBD-1 upgrade first, before installing the turbo. This is covered in this thread: https://www.3geez.com/showthread.php?t=18160

    Then chip the ECU, install bigger injectors, and start working on your turbo setup.

  9. #9

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    Re: I'm gonna turbo the A20 in my 88

    man just forget about going turbo for now...

    u will blow ur motor for sure.

  10. #10
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    Re: I'm gonna turbo the A20 in my 88

    IMO i really dont think YOU should be turboing this car at all?? what do you guys think?? sorry if im coming out as an ass but i just think you need to do some more research on here first....
    -Gio
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    Re: I'm gonna turbo the A20 in my 88

    Sorry for asking the same questions, but the search just leaves me confused. I'm not looking at anything radical, I'm just looking for a little more umph. I have all the stuff to do it as far as turbo, intercooler, piping, BOV, etc, all I'd have to make is the manifold, o2 housing and downpipe. What mods were done to your turbo cars before you turboed them, I read on a couple threads that people had turboed an A20 stock and its been fine...How long will it last with 8psi of boost?
    What about 4g map and trottle bodies are their 2 kinds.

    What is all needed for obd-1 swap, what will need to be done to tune it in? Thanks
    Last edited by Bglad420; 12-20-2005 at 10:22 PM.
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    Re: I'm gonna turbo the A20 in my 88

    I don't mean to be a jerk but...there is a thing called an FAQ listed on 3geez home page.
    https://www.3geez.com/showthread.php?t=37169
    that's where that link came from. It should honestly answer all questions pertaining to turbocharging the accord. Also, look at other peoples projects if there are still some unanswered questions. For the OBD-1 swap the link was given up above and for tuning information go to PGMFI.org and just start reading. If there are still unanswered questions about turbo-ing check out homemadeturbo.com. That should help quite a bit in regards to home-brew things seeing as though there isn't a "kit" for the 3g. Again, not meaning to sound like a pompous jerk but, please take my advice and search just a tic before posting because it'll honestly save you alot of trouble.
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  13. #13

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    Re: I'm gonna turbo the A20 in my 88

    I look at those pages, but sometimes I have questions that I cant find the answers to, and I just need a bit more, or specific info sorry for asking questions bud.
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    Re: I'm gonna turbo the A20 in my 88

    the problem is, your asking questions that cant really be answered.

    with a perfect tune, im willing to bet that a stock a20 could hold 400 whp. with a PERFECT TUNE. u could blow your motor to hell with 4 psi if you do it wrong. it could last longer than you do, it could last 300 miles.

    we dont know the condition of your current motor, we dont know how u maintained it. we dont know if it has been jbwelded together and boost will destroy it instantly, or if its a 50,000 mile replacement motor.

    questions that we can, and have answered, are about the parts we reccomend to use. but honestly, how the hell could we tell u how long a stock unknown condition a20 will last at 8psi. is that 8psi un interecooled? do u have 94 octane, 92, 91? how do u drive the car? do you road road, auto-x, drag race? is it your daily driver? how good are u with maintenence? turbo cars as a rule should be kept a much closer eye on.... u cant skimp on routine maintenance.

    i will say for the sake of answering your question, that when you 'bolt on' your buddies 240 parts, that your motor lasts 2 weeks at 8psi. if u assume its gonna last 50,000 miles ur crazy... we have no idea...

    however, props for being a noob who wants to turbo instead of get the new raging body kit on there... ur headed in the right direction, and theres no reason u cant pull off a sweet turbo setup, but it takes time and a hell of a lot of research.

    good luck to you

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    Re: I'm gonna turbo the A20 in my 88

    I know quite abit out turbos and such I understand all this stuff on what I need, I plan to build another motor for the car, for when and if it blows up the car has 120K all maintence records, it was a grandma car, and the motor hasn't ever been replaced. I just am curious is all and the search really doesn't help me cuz everyone gets off topic, and you cant find any information with out hours, and hours of searching. (I must admit 3g search works the best though)
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    Re: I'm gonna turbo the A20 in my 88

    Quote Originally Posted by w00tw00t111
    Horrible....no help, Just tell me what I need for the OBD1 conversion....I'll start here and then move to the fuel system...So for now what is the best ECU to use for 200-220hp turbocharged on an A20, and easiest to wire in? what about dizzy does this need to be changed? or can I keep the same one with obd1? do I need a 4g or something??? Thanks
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    Re: I'm gonna turbo the A20 in my 88

    Hey thanks for the info...I wasn't trying to be a jerk... So no recomemnded ecu's. What ecu's are the easiest to tune. Would you recomend the LS ecu? What intake manifold works best? Can I just use 4g T.B. and 4g map? Sorry but this is alot more helpful to me, because I plan on doing this project real soon, like in a couple months once I make sureI have everything I need. I just want to make sureI am taking the right steps is all. Thanks again. Is your car turboed Bobafett, what are you using if it is, what problems did you run into...and whats VSS?
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  18. #18

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    Re: I'm gonna turbo the A20 in my 88

    my is not turboed. but if u read the threads, i have been researching and planning a build since like 2002....

    i have a fully built motor that is ready for boost, that i should be finishing up in the next couple weeks. over the course of the next year i will be gathering parts to boost it. and im hoping by this time next year to be turbod.

    an 'ecu' isnt easier to tune than another ecu, it depends on the software u use. and realistically, we shouldnt be tuning our own. your (and my) best bet is getting a well supported management program, like crome or uberdata and take it to a shop and have them help you dyno tune it.

    as for which intake manifold works best, it depends what u are doing. if u are building an all out high rpm race motor, i would go with a victor-x manifold, but if u are just sticking with a mostly stock setup, i would go with oem b16 and just port and polish work on it. if you use b series intake, you will either need to redrill or get a differently throttle body. my aftermarket b16 manifold will not fit a a20 throttle body. i bought an aftermarket b-series throttle body to go along with it.

    4g map sensor will probably not help you with an obd1 swap, i am not 100% sure. from what i have gathered u need a map sensor out of an obd1 car that mounts to the tb, but this might be because of the IM and TB that i have.

    even though my car is not turboed, i can tell u what it IS going to use.

    GT28RS disco potato turbo (or use my t3/t4, not sure which)
    custom built log manifold
    custom built 3" downpipe
    custom built 3" mandrel bent exhuast
    TiAL 38mm External wastegate
    HKS SSQV BOV
    custom coach 31x6x2.5in FMIC
    stealthmode oil line kit
    DSM 450CC or RX7 460CC injectors
    AEM 300c fuel pressure regulator
    Megasquirt engine management (havent done my homework on this yet)

    i already have about half of this stuff, but i need some of it still...

    the rest of the stuff, done to my motor and whatnot is already documented, so i wont go into it in this thread. basically built motor with built head and valvetrain, with reaaally big TB and aftermarket intake manifold.

    shooting for 160+ whp NA, and as much as my tranny wants to take while boosted.

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    Re: I'm gonna turbo the A20 in my 88

    Why can't I go to the second page on this thread? wtf? I just clicked on it like 5 times and it won't do it! damn it..I just wanted to get into how little I knew when I started to turbo my car several years ago..Man, I wish someone could have told me what I know now, they would have saved me so much money and engine damage..lol..

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    Re: I'm gonna turbo the A20 in my 88

    Quote Originally Posted by bobafett
    realistically, we shouldnt be tuning our own.
    Hey, no need for that negativity! Why not learn how to tune yourself?

    obd-1 LS TB, IM, ecu, dsm 450s, stock internals+ 12 psi=220 or so whp. I think the t-25 is way too small though. It will fall off in the upper rpm ranges. An evo turbo would be a much better choice.

    p.s. investigate the j&s safeguard

  21. #21
    3Geez Veteran AccordEpicenter's Avatar
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    Re: I'm gonna turbo the A20 in my 88

    you need a BIG turbo with BIG BOOST...none of this t25/GT28 stuff, go BIG. Big turbos= HUGE Top End. There is nothing wrong with tuning it yourself
    429whp 362wtq A20 TURBO. A20T>*

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    Re: I'm gonna turbo the A20 in my 88

    i totally agree you guys.. and i plan to tune my own... but im not about to make my own baseline. the reason i am getting a programmable system is so that i can play with it. but i spent thousands of dollars on this setup, and im not prepared to blow it up just cause its my first time trying to set up a turbo car with software i have never used before.

    after i get a baseline setup, i plan on tweaking it and getting it perfect, but i want a solid platform to tune off of. its not like i would be blowing up a stock a20

    a t25 works for dsm guys with a 2.0L revving to 6500-7000. i think that for people running less than 10psi, a t25 is an economical turbo to use, and will flow well up to 6000 on an a20 head.

    do u really think that a GT28RS potato is too small? its the perfect 350-400whp turbo for 2.0L SR20 motors, so i figure it will be close to the same on our a20.

    GT28RS Specs:
    DUAL GT STEEL BALL BEARING CENTER SECTION

    TURBINE SPECS: T25
    .86 A/R HOUSING
    76 TRIM 54mm GT SERIES WHEEL

    COMPRESSOR SPECS: TO4b HOUSING
    .60 A/R HOUSING
    62 TRIM

    COMPRESSOR FLOW: 35 LBS/MIN


    -------------------------------------------

    T3/T04E 57 Trim .60/.63

    COMPRESSOR SPECS:
    flow: 53 lbs/min 678cfm
    .60 A/R HOUSING
    60 TRIM WHEEL

    TURBINE SPECS:
    .63 A/R HOUSING
    STAGE 3 WHEEL

    oil lubricated centersection.
    supportable of 500whp!

    -------------------------------------------

    what turbo do u suggest to perform reasonable in both 12psi street to 20psi track range? keeping in mind the motor will rev to 8000. too bad i didnt have the head flow benched to see what it could do.

    im beginning to think more and more that my t3/t4 that i already own would be a good choice.

  23. #23
    3Geez Veteran AccordEpicenter's Avatar
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    Re: I'm gonna turbo the A20 in my 88

    That GT28RS will work just fine but i think its gonna pull WAY harder top end with a T3/T4 due to a bigger turbine at the expense of a little lag. That GT28RS doesnt lag. Ever
    429whp 362wtq A20 TURBO. A20T>*

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    Re: I'm gonna turbo the A20 in my 88

    yeah we will see... i got plenty of time to get my other stuff together, i will just save the turbo/manifold/downpipe for very last. it'll give me plenty of time to think about it. the hard pull of a t3/t4 seems a heck of a lot more fun... i like drag racing better than other types of racing, but a disco potato would keep lag down, which would make autox a lot more practical. meh, i will take it one step at a time.

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    Bglad420's Avatar
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    Re: I'm gonna turbo the A20 in my 88

    OK heres the scenerio, I put a turbo, BOV, intercooler, 2" charge pipes on my car, no other mods, no ecu, injectors, or anything else. Whats gonna happen?
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