does autocrossing hurt reliability?
Results 1 to 15 of 15

This is a discussion on does autocrossing hurt reliability? within the Motorsports Talk forums, part of the Community - Meet other Enthusiasts category; my friend just got a 05 wrx and wants to start autoXing it. currently it is stock but besides suspension ...

  1. #1
    Registered User
    Join Date
    Apr 2010
    Posts
    143

    does autocrossing hurt reliability?

    my friend just got a 05 wrx and wants to start autoXing it. currently it is stock but besides suspension mods he wants EM, tbe, and 16g with supporting mods.

    that sounds like a pretty modest build but in our research we've found a lot of guys saying autoX and light mods are okay for a daily driver. other guys laugh and say hes ridiculous and will need another car.

    he cant afford another car and plans to keep the rex for 5 or 6 years. what do you guys think, bad idea or with new parts/proper installs and going easy on the tranny will it be alright? thanks

  2. Remove Advertisements
    ClubWRX.net
    Advertisements
     

  3. #2
    Registered User hunter20ga's Avatar
    Join Date
    Aug 2010
    Location
    North Dakota
    Posts
    96
    The harder you drive a car, the more often it will break down. Period.

    You add horsepower and torque, expect more things to break over time. You're exceeding the engineering original limits.

    I believe Subarus are very well built, and can take some abuse, but in the end, every machine wears out and breaks down.

    That's not to say your buddy can't autocross his car and still have it double as a DD, but he'll have to make some concessions and compromises, IMHO.

  4. #3
    Registered User MrBluerex's Avatar
    Join Date
    Nov 2009
    Location
    PA
    Posts
    78
    Quote Originally Posted by hunter20ga View Post
    The harder you drive a car, the more often it will break down. Period.

    You add horsepower and torque, expect more things to break over time. You're exceeding the engineering original limits.

    I believe Subarus are very well built, and can take some abuse, but in the end, every machine wears out and breaks down.

    That's not to say your buddy can't autocross his car and still have it double as a DD, but he'll have to make some concessions and compromises, IMHO.
    +1
    Never mess with a Sicillian when death is on the line!!! hahahahaha.....


    Bugeye Mafia #307

  5. #4
    Registered User
    Join Date
    Apr 2010
    Posts
    143
    do you think as far as power goes what I described is too much for the WRX to still be reliable? I know he loves his car so if its going to mess it up he'll leave it stock.

    I'm curious to myself though because I want an 07 wrx but I dont see the point in buying one if I cant build it up some and autoX. if thats the case I might just have to hold out with my accord until I can afford an sti.

    is the 16G with supporting mods reasonable on the transmission? we both have been sifting through clubdub and nasioc and keep getting mixed reviews. doesnt seem like insane power and anything bigger wouldnt be as good for autoX anyway but neither of has have worked on WRXs before so were not sure.

  6. #5
    Registered User 06scoobyrex's Avatar
    Join Date
    Feb 2010
    Location
    SL,UT
    Posts
    2,606
    You can do autox in pretty much any car.... they have different classes per car type and mods... so people telling you that you need a whole different car is complete bull****... a lot of people autox in $1000 honda's and do great... its more about driving skill and suspention mods more then power output...

    Yes the harder you drive and the more its modified will decrease the life of the car, but its really about how you maintain and treat your car (also the quality of the tune plays a major roll)... so don't let people discourge you if they have their heads stuck up their own ass...
    Hawk-Eye Alliance #801
    The Impreza "this was repaired/replaced at what mileage" database (Please Contribute)
    http://www.clubwrx.net/forums/showth...57#post2688257

  7. #6
    Registered User wrx wagone's Avatar
    Join Date
    May 2005
    Location
    Phillytown, PA
    Posts
    10,774
    I wouldn't go so far as to call autox abuse, but it definitely is use, hard use.

    If your friend is serious with autox, I would recommend selecting mods for whatever class you intend to compete.
    This message printed on 100% recycled electrons.

  8. #7
    Registered User JovicA's Avatar
    Join Date
    May 2010
    Location
    Denver CO
    Posts
    74
    i am getting a 1995 jetta from a guy i work with for 350$ and i will run it in autox
    ME: I am losing boost its only boosting 10 instead of 15psi
    DUMDUM: I think its your booster
    ME:*thinking* your a moron

  9. #8
    Registered User teflon_jones's Avatar
    Join Date
    Apr 2007
    Location
    8000' up in Colorado
    Posts
    6,753
    Quote Originally Posted by hunter20ga View Post
    The harder you drive a car, the more often it will break down. Period.
    That's all there is to say.
    Scott
    Past Subies - '11 STI Limited stage 1+ and '04 STi stage 2+
    '13 Wrangler Rubicon - custom front bumper w/12k lb winch & off-road lights, skid plates, diff guards, etc.
    '04 Porsche 911 Turbo GT2 clone 600 HP/TQ
    '77 F-150 heavily modded for off-roading

  10. #9
    Registered User ProRallyWannabe's Avatar
    Join Date
    Jan 2008
    Location
    Menifee, Ca
    Posts
    112
    "Rally"Cross FTMFW!

    i agree with that statement above, your car will brake sooner than grandmas even if she has a BMW
    Last edited by ProRallyWannabe; 11-30-2010 at 04:39 PM.
    "Strait roads are for fast cars... Turns are for fast drivers" -Colon Steele McRae (1968-2007)

  11. #10
    Registered User 22B05STI's Avatar
    Join Date
    Dec 2008
    Location
    Monterey California
    Posts
    393
    I think that the standard car would be a good start. Do some events get some advice and experience and go from there. The impreza is generally a reliable car but as the saying goes " you have to pay to play" and in autocrossing and racing it will cost in the end !

  12. #11
    Registered User irish44j's Avatar
    Join Date
    Feb 2009
    Location
    Burke, VA
    Posts
    153
    Quote Originally Posted by 22B05STI View Post
    I think that the standard car would be a good start. Do some events get some advice and experience and go from there. The impreza is generally a reliable car but as the saying goes " you have to pay to play" and in autocrossing and racing it will cost in the end !
    let's put it this way:

    the wrx has some amount of motorsports heritage, and is built as a "performance" car to some extent.

    now think about this:

    I ran a 2000 Nissan Maxima in (just a guess) about 80-90 autocrosses, without any kind of breakage whatsoever. And that is not a car made for motorsports or particular performance driving. It's just a heavy FWD "semi-sports" sedan....

    -

    In short, there's no real way to know, but in my experience the only ways that autocross will hurt the car are:

    1. your tires will be hurt, lol.
    2. you run into a lightpost or curb (unlikely)
    3. you really suck at clutch/shift and break something in the tranny during the 1 or 2 shifts you have to make each run.

    The forces exerted on your car during autocross (using street tires) are well within anything that would be exerted on the car during an emergency maneuver on the street, or going down a bumpy road. In short...the car can handle it just fine.

    I have about 15 autocrosses now on my WRX with no issues.

  13. #12
    Registered User 2.0Rs's Avatar
    Join Date
    Jul 2007
    Location
    King of Prussia, Pa
    Posts
    1,168
    My recommendation to him would not to be trying to go bigger turbo. The Td04 is a great quick spooling turbo. Go with some bolt on mods and a tune. I think cobb even had an autocross map that had some great low and mid power. Not sure on the results of it I just know they had one. I'm sure there are plenty of those kinds of maps around. Other then that do some suspension mods. Do some reading up on what to change out and what they do. Don't just go make a thread asking everyone what to buy, do some research and learn.

    Also as stated before you should read up on the autocrossing rules and classes to see what best fits your car or projections.

  14. #13
    Administrator RayfieldsWRX's Avatar
    Join Date
    Oct 2002
    Location
    The Old Folks Home
    Posts
    47,004
    I Support ClubWRX
    Quote Originally Posted by irish44j View Post
    The forces exerted on your car during autocross (using street tires) are well within anything that would be exerted on the car during an emergency maneuver on the street, or going down a bumpy road. In short...the car can handle it just fine.
    I don't know that I agree with the idea that our cars were engineered to do autocross every weekend for many years with zero breakage. Sooner or later you'll hit the MCBF (mean cycles between failure) number that goes with the weakest component and the harshness of the cycle.
    --Ray
    Grandfather of the Bugeye Mafia
    2013 Subaru BRZ Limited
    2002 Subaru WRX Bugeyebrid Wagon

  15. #14
    Registered User
    Join Date
    Apr 2010
    Posts
    143
    2.0rs how come you dont think the 16g is a good idea? isn't it comparable to the vf39 because I always thought that turbo had for the most part reasonable gains. by the way your car
    is awesome.

    seems like we've got guys on both sides of the fence, I suppose it's a judgement call. but damn this is why I havent sprung on a wrx yet. I saved up six grand to drop on a 2007 wrx limited but all the threads about guys grenading their trannies or blowing their motors up modding has got me hesitant to make the plunge.

    I guess Im just hesitant to stray away from NA power and FWD transmissions. theyre not as fun but its nice not worrying

  16. #15
    Registered User 2.0Rs's Avatar
    Join Date
    Jul 2007
    Location
    King of Prussia, Pa
    Posts
    1,168
    Quote Originally Posted by Cmaj7th View Post
    2.0rs how come you dont think the 16g is a good idea? isn't it comparable to the vf39 because I always thought that turbo had for the most part reasonable gains. by the way your car
    is awesome.
    Thanks man.

    Depending on the kind of 16g you get it generally makes a little more hp then a vf-39 and might spool the same or just a tad higher then a vf. If it were up to me and I was going to seriously autocross my car a lot I'd go with a td04. On a 2.5 it's basically instant spool. Makes for a better autocross turbo. Most of the time you'll just be stuck in second gear. You want to be able to hit the throttle and pull when needed not wait for spool and by then it's usually to late. Some people feel different but that's just how I'd do it.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •