Max hp on stock internals? - Page 2
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This is a discussion on Max hp on stock internals? within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; With a spot-on tuning like yours Dan, I'll bet 320-350whp is still pretty reliable on a stock motor, but what ...

  1. #16
    Registered User stilesg57's Avatar
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    With a spot-on tuning like yours Dan, I'll bet 320-350whp is still pretty reliable on a stock motor, but what about the tranny? That looks to be the limiting factor above 300whp as much as anything.

    Me want's an STi 6spd...
    <----- Finally found an avatar I like!

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  3. #17
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    Hi...

    I wanna say HI t o all first of all...and being a noob pls have a lot of pations...I am a fast learner but i have read so much that I don't know anything animore...

    I am trying to get in the subaru world...I want to get a subaru WRX...but I wanna hit 400 hp with it at least 350 whp...planing to invest 10.000 and to buy an 2002 WRX with 12.000
    If with 10.000 I can't hit 400 hp tell me what i need to do...But i want to be reliable...
    In evo u can put 500 hp .. u get to 550 at 25 psi with 15.000 that means 3.0 sec 0-60...subaru can't get there from what i have read(not even the STI)...I started to read 4 days ago...6 houres a day...
    I like the subaru...Pls give me a mod how i asked...than if u can i wanna hear some opinions regarding evo vs sti upgrade potential...

  4. #18
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    me again

    You will probably ask me if stok or not....I don't care how you will get to 400 hp or 350 whp ...do whatever u want to get to that power,but I want my car to stay in 1 piece

  5. #19
    Registered User Z3RO's Avatar
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    why did you bump a almost 3 yr old thread..lol
    " I got four doors to fit more wh0res !!!"


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  6. #20
    Registered User amukaoen's Avatar
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    Quote Originally Posted by Z3RO
    why did you bump a almost 3 yr old thread..lol

    cause its a damn good thread!! :-p
    they call STi's STDs because everyone is getting them.

  7. #21
    Registered User Michaelsrex's Avatar
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    I think the stock Ej20 6000WHP around there you might have some problems
    Fp18g, Txs RFL
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  8. #22
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    Quote Originally Posted by Z3RO
    why did you bump a almost 3 yr old thread..lol
    hey, at least he used the 'search' function....I'm proud of the n00b....

    72k miles on my car...currently over 400chp(~325whp)...stock block, stock tranny....(both will fail in time)

    you can easily get a WRX to 350whp w/ $10k....

    MODS (with reliabilty in mind):

    2.5L Sti Short block, $1800...$3000 installed w/ misc parts.
    STi RA Gearset $2000 installed
    Deadbolt Superzilla SZ49 turbo...$1650
    TurboXS FMIC...$900
    Modded Stock injectors...$120 for flow testing & cleaning
    255lph Fuel pump....$100
    Intake....$200
    Engine Management...cheapest...CobbAP +Protune(custom tuning)...$750
    1988 Celica Alltrac
    Hallman Pro, 15x7.5 +20mm Rota Slipstreams
    2005 LGT 315whp/340wtq@21psi - Sold
    VF52, Crucial P&P&C Manifolds, UP, DP, RP, Magnaflow CBE, Hallman PRO, ROMRaider
    2003 WRX 371whp/355wtq@24psi - Sold
    TD05H-20G-38mm Tial, Meth Injection, Hyperflow TMIC, ROMRaider
    Dyno Chart METH vs 93 oct

  9. #23
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    Quote Originally Posted by testes1010
    hey, at least he used the 'search' function....I'm proud of the n00b....

    72k miles on my car...currently over 400chp(~325whp)...stock block, stock tranny....(both will fail in time)

    you can easily get a WRX to 350whp w/ $10k....

    MODS (with reliabilty in mind):

    2.5L Sti Short block, $1800...$3000 installed w/ misc parts.
    STi RA Gearset $2000 installed
    Deadbolt Superzilla SZ49 turbo...$1650
    TurboXS FMIC...$900
    Modded Stock injectors...$120 for flow testing & cleaning
    255lph Fuel pump....$100
    Intake....$200
    Engine Management...cheapest...CobbAP +Protune(custom tuning)...$750
    Do you know how long will take from 0-60 (aprox) with that mode !? I was on www.Vishnuwrx.com...they will put 350 hp with 0-60 in 4.2sec ...will cost aprox 7500$...the thing is I am in chicago and they are in CA...as I have read...

  10. #24
    Registered User Cavadini's Avatar
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    i think the wrx blocks and trannys are fairly stout. I am 32k miles, stage IV for 26ish of them. I have run a best trap of 111mph, put honestly a couple hundred launches on the streets and many launches at the track and the stock gearbox and block are still doing rpetty good.

    Here is a pic of my collection of 12.6-12.9 passes i've made with my car.




    i plan on upgrading the tranny this winter and then maybe go with a V7 sti motor
    07 Mercedes-Benz E350
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    04 WRX VF34+TMIC SOLD
    12.62@108 1.7 60'
    295whp & 302tq on Mustang Dyno
    MODS

  11. #25
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    Thumbs down

    Quote Originally Posted by testes1010
    hey, at least he used the 'search' function....I'm proud of the n00b....

    72k miles on my car...currently over 400chp(~325whp)...stock block, stock tranny....(both will fail in time)

    you can easily get a WRX to 350whp w/ $10k....

    MODS (with reliabilty in mind):

    2.5L Sti Short block, $1800...$3000 installed w/ misc parts.
    STi RA Gearset $2000 installed
    Deadbolt Superzilla SZ49 turbo...$1650
    TurboXS FMIC...$900
    Modded Stock injectors...$120 for flow testing & cleaning
    255lph Fuel pump....$100
    Intake....$200
    Engine Management...cheapest...CobbAP +Protune(custom tuning)...$750
    HAHA..I used search...DUDE... this car upgrades are not easy to understand...and takes a lot of time to learn about them...I just started 1 weak ago...and I think everybody was a noob...If u are a noob after years of experience is a different story...For now i want to know how much can I upgrade my car:my wish is 400whp/350 whp...if is posible i will begin questioning about parts... cose is a mess in my had now
    In 6 months I will know how most of this people with big mouth that screaming at me learned in 3 years...Thanks to all that are willing to give me an advice instead swearing at me cose I'm a noob...Is like they've never been...

  12. #26
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    Quote Originally Posted by pepenele
    the thing is I am in chicago and they are in CA...as I have read...
    I'll be in Chicago Nov 18th for a retune w/ Jorge on alky injection at P&L motorsports....
    1988 Celica Alltrac
    Hallman Pro, 15x7.5 +20mm Rota Slipstreams
    2005 LGT 315whp/340wtq@21psi - Sold
    VF52, Crucial P&P&C Manifolds, UP, DP, RP, Magnaflow CBE, Hallman PRO, ROMRaider
    2003 WRX 371whp/355wtq@24psi - Sold
    TD05H-20G-38mm Tial, Meth Injection, Hyperflow TMIC, ROMRaider
    Dyno Chart METH vs 93 oct

  13. #27
    Registered User subaman81's Avatar
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    I have been reading this thread and have found a lot of this prett interesting. I can currently run strong 12.6's on Turbo Blue race gas. With a handfull of mods. Since winter is on its way here in cincinnati I am plotting plans for next spring. I was wondering if you guys think these new upgrades would shred my 40k stock WRX motor? I currently have:
    VF30 Turbo
    TXS FMIC
    STI RA Gears
    TBE
    Up-Pipe
    STi injectors
    TXS Utec
    Perrin Wide Mouth Intake.
    And I would like to sell the Monster ported VF30, and STi injectors and purchase either an FP18G, or a PE1818, I was also thinking on a new manifold possibly Gruppe-S V2 Manifold - 02+ WRX and go with an alcohol injection kit. If you guys have any recommendations I WILL actually listen and ponder them as oppossed to just saying F it and putting on my choices anyway I really appreciate your help and I am really posting this to see if the internals can hold up on my young EJ20 motor.
    Last edited by subaman81; 10-31-2005 at 07:52 AM. Reason: I'm retarded
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  14. #28
    Registered User amukaoen's Avatar
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    Quote Originally Posted by Michaelsrex
    I think the stock Ej20 6000WHP around there you might have some problems
    Really???

    I do too..... I dont know too many WRXs with SIX THOUSAND wheel horsepower..
    they call STi's STDs because everyone is getting them.

  15. #29
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    a few years ago, I think it was the by at turboxs that tuned a stock block out, and got to around 42xwhp before a rod let go due to the energy involved in teh compression stroke.

    Tuning and setup are the key to getting there reliably. This means a big enough turbo (not a small one running mega boost) and tuning by an excellent tuner that understands the engine as well.

    When I asked Ultimate Racing, they felt that the limit was somwhere around 400whp.

    Section 8 Motorsport told me that the limit was around 400whp since this is where the heads choke.

    This leads me to believe that the limits are actually higher than we think.

    People have been busting at or around the 300whp mark because they are running setups that are not designed to efficiently put out that sort of power. Rotated setups I think will be needed to reach the upper limits while retaining a modicum of reliabilty, since they can produce the power while pushing well under 20psi of boost (a good thing for the stock block).
    02 WRX WRBP sedan..
    Upgrades??? stock...

  16. #30
    Registered User subaman81's Avatar
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    what you are saying makes great sense. I think that is why I am considering to increase the turbo and exhaust flow before I go messing with the engine for more power. With a bigger turbo I can stay away from the 20psi boost and still be fast, although probably not much faster than I am now, just safer I would say.
    2003 WRX For Sale! PM for details

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