Stock sti 2005
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This is a discussion on Stock sti 2005 within the New Member Hangout forums, part of the Community - Meet other Enthusiasts category; hey guys, just saying a hello from aus. was wondering if anyone could steer me one the right path with ...

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    Stock sti 2005

    hey guys, just saying a hello from aus.

    was wondering if anyone could steer me one the right path with what regulations i need to follow in doing a track day in regards to fire extinguisher etc..

    also i have coolant leaks on the top of my radiator across the whole length but my coolant is showing that its at the right level? ive been keeping an eye on it and its not changing the level? where would it be leaking from??

    cheers

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    He simply abides. SD_GR's Avatar
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    Hello,

    Welcome.

    Any track will have some sort of stewarding set up; ask tech and they will tell you exactly what you need, what you can do, and what you can't. In fact, the more organized and by-the-book those guys are, the more comfortable you should feel using that track.

    The radiator top seam tends to fail where it meets the metal. Also, in rarer cases, the top hose leaks where the clamp holds it onto the rad, and sometimes this only happens when the system is pressurized and the top hose is moving (as in, when the motor pitches as the car is driven). It is most likely the rad itself though, at the top seam.
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    ^^

    I couldn't have answered it any better. And I agree with the radiator comments.
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    ah nice thanks for that..

    so is this seam pretty basic to replace? considering its a consistent amount around the whole top of the rad it sounds like thats the issue.

    i havnt had the car for long so just getting use to it. i had a dyno run not long ago and it showed a boost spike around 4000 rpm it peaked at about 22psi then slowly dropped. would there car have been tuned like this? its standard apart from 3" turbo back zorst

    cheers

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    Quote Originally Posted by 05 sti View Post
    ah nice thanks for that..

    so is this seam pretty basic to replace? considering its a consistent amount around the whole top of the rad it sounds like thats the issue.

    i havnt had the car for long so just getting use to it. i had a dyno run not long ago and it showed a boost spike around 4000 rpm it peaked at about 22psi then slowly dropped. would there car have been tuned like this? its standard apart from 3" turbo back zorst

    cheers
    where are you located? the peak boost pressure is much higher than a stage 2 (3" turboback + tune) USDM EJ257 motor. That being said, I won't throw out the possibility that you have the EJ207 2.0L motor.

    What were the results of the dyno run?
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    Quote Originally Posted by 05 sti View Post
    so is this seam pretty basic to replace? considering its a consistent amount around the whole top of the rad it sounds like thats the issue.
    Once you are sure that's the issue, replace the radiator. The seam::metal interface isn't really reparable, so you just replace the whole thing.
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    ok then ill find out what the problem is this week..

    im in tasmania australia its freezing down here

    dyno run was 175kw atw 636nm so i thought that was pretty decent whats EJ207? its stamped on top of motor just EJ20t i believe

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    Quote Originally Posted by 05 sti View Post
    ok then ill find out what the problem is this week..

    im in tasmania australia its freezing down here

    dyno run was 175kw atw 636nm so i thought that was pretty decent whats EJ207? its stamped on top of motor just EJ20t i believe
    that can't be right, can it? equivalent units are 235 whp and 470 wtq (in ft-lbs). You would have to make peak torque at MAXIMUM 2627 RPM to have this make sense. 235 whp seems stockish, however
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    yea thats what it came out as. a bloke that has an 08 rally car with 200kw atw got 750nm on same dyno. mainline chassis dyno

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    rally cars are usually limited on horsepower, but not on torque... So that's why the rally car had such high torque numbers and low horsepower.
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    yeah but despite being akin, the STi is not a rally car. My guess is the car isn't close to stock if you are seeing 470 wtq
    2015 CWP WRX STi ... But how did I get roped back into an EJ motor?!
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    oh so you reckon the ecu could have been reflashed or do you reckon there are more major mods?

    what causes a boost spike? it needs to be retuned i think it near knocks your head off when it hits boost but then falls away through the rest of the rev range?

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