Project Hatch (aka project grocery getter part II) - Page 56
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This is a discussion on Project Hatch (aka project grocery getter part II) within the Everyday Impreza Talk forums, part of the Community - Meet other Enthusiasts category; Originally Posted by AgentH Oh. Would you guys say that 24mm is perfect for daily driven duties? I noticed with ...

  1. #826
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    Quote Originally Posted by AgentH View Post
    Oh. Would you guys say that 24mm is perfect for daily driven duties? I noticed with my 29mm front bar (GD mind you), things got noticibly harsher over most surfaces. But with a mild spring rate, it's not too bad.

    Do you plan on getting anything like this so it doesn't slide around? http://www.poltec.us/misc.htm
    I have a 25mm perrin on full stiff. No harshness on daily driving, but not enough bar for autox unfortunately (even on street tires: RS3s) .

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    Moderating on the run! Big Sky WRX's Avatar
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    24mm is plenty for daily driving IMO

    the WL bars come w/ collars of their own (if they didn't I'd install something like the Poltec pieces)
    "Simplify and add lightness." - Colin Chapman

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    Quote Originally Posted by 09rexwagon View Post
    I have a 25mm perrin on full stiff. No harshness on daily driving, but not enough bar for autox unfortunately (even on street tires: RS3s) .
    That really surprises me considering the increased spring rate of the 09. Do you not get the bite up front or are you lifting a rear wheel or something? Or is there just too much body roll?

    By the way, how do you like the RS3's? Bigsky, use any street tires at any autox events this summer? My XS's are on their way out and I'm curious what you guys are running.
    Last edited by AgentH; 07-30-2010 at 07:14 AM.
    2nd WRX...
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  5. #829
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    Quote Originally Posted by AgentH View Post
    That really surprises me considering the increased spring rate of the 09. Do you not get the bite up front or are you lifting a rear wheel or something? Or is there just too much body roll?

    By the way, how do you like the RS3's? Bigsky, use any street tires at any autox events this summer? My XS's are on their way out and I'm curious what you guys are running.
    No, I'm able to pull enough G's that I'm still rolling onto the edge of the tire (ie compressing enough that I'm getting into positive camber. Plus a big bar makes the car handle much better in fast transitions/slaloms even if you give up a bit in sweeper exit (where you plow if you get on the throttle too much, too early).

    Sorry, I mistyped, I have RS2s...which are not great...very sloppy sidewalls. I've heard a lot of good things about the RS3s though....much much stiffer sidewalls....better cool performance (the RS2s love to be really hot). Haven't heard about wet performance though. They may be my next tire as many thing they are going to give the Star Specs a run for the money.

    I think you will be much more satisfied with Star Specs or RS3s or RE11s than your Kuhmo XS if you are autocrossing. A WRX driver in our club has XS and he basically wastes his first run every time and does some modest drifting to get the temps up....XS do not perform well at all unless they are smoking hot .

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    Moderating on the run! Big Sky WRX's Avatar
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    I've only run Hoosiers, I still have the oe tires for summer use- my plan was to run them for wet events, thus far haven't had a chance to run them in the last two years
    "Simplify and add lightness." - Colin Chapman

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    Registered User tuskenraider's Avatar
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    Quote Originally Posted by Big Sky WRX View Post
    24mm is plenty for daily driving IMO

    the WL bars come w/ collars of their own (if they didn't I'd install something like the Poltec pieces)
    I agree at this point, but I haven't raced on the 29mm with street tires, but it definately increased harshness as anything from either side will transmit to the other. My wife will be on the streets tomorrow, but I can't be in the car for a divisional to see how it handles.
    '11 WRX Hatch
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    I was a bit too cheap for the borla muffler delete, so I had this made for $70 :

    http://www.youtube.com/watch?v=C9D_Uv0z2tk

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    Quote Originally Posted by 09rexwagon View Post
    I was a bit too cheap for the borla muffler delete, so I had this made for $70 :

    http://www.youtube.com/watch?v=C9D_Uv0z2tk
    Much better! Where'd you get the piping and coupler? I've been thinking about getting a pipe together like that for my '05...
    Blobeye Syndicate #75
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  10. #834
    Moderating on the run! Big Sky WRX's Avatar
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    Quote Originally Posted by 09rexwagon View Post
    I was a bit too cheap for the borla muffler delete, so I had this made for $70 :

    http://www.youtube.com/watch?v=C9D_Uv0z2tk
    nice work sounds very similar to the Borla delete- if I drive "easy" it's not overly loud- when I get on it- it'd get your attention
    "Simplify and add lightness." - Colin Chapman

  11. #835
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    Quote Originally Posted by tuskenraider View Post
    Yes, he said to try a washer for the mounting bolt concerns but that won't work since the bracket curves even where the small bolt head is at. He also said he would send me another bracket so I could cut it a little less than his, but I haven't heard back from him in 2+ weeks so I just ordered my own. They came yesterday so I'll get around to cutting one so there's more bracket for the bolt to seat to. Mounting still looks solid though, so that's good.

    I think it would from talking to others. I'm just figuring this all out myself so I'm no expert. I'd take it to the shop, have them make a mark on the control arm and bolt at the stock position, then when they toe it out, make another mark so you could adjust it back when you choose. I just put mine back to the 1/32" after the event and believe it'll be fine for the street.
    So, I might mess with my toe tomorrow before Sunday's event. When you guys are saying 1/16" and 3/16" etc, are you talking about relative to the front and rear of the wheel or the front and rear of the tire? I guess talking in degrees can lead to less confusion.

  12. #836
    Moderating on the run! Big Sky WRX's Avatar
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    I'm pretty sure the alignment rack I go to uses the tire

    converting to degrees is a nice exercise, one that always confuses me though

    the FSM says +/- 3mm (0.12"), in degrees they show +/- 007'30"
    "Simplify and add lightness." - Colin Chapman

  13. #837
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    Quote Originally Posted by Big Sky WRX View Post
    I'm pretty sure the alignment rack I go to uses the tire

    converting to degrees is a nice exercise, one that always confuses me though

    the FSM says +/- 3mm (0.12"), in degrees they show +/- 007'30"
    if the differentials front to back are relative to the front and rear of the tire then you do arcsin( delta/tire_diameter) or if the delta is relative to the wheel's edge arcsine(delta/wheel_edge_diameter).

    On the stock wheels the edge is at a diameter of about 18.25".

  14. #838
    Registered User Web Foot STi's Avatar
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    Fred Puhn's book "How to make your car handle" has a nifty chart for converting toe for those that don't want to deal with arcsin.
    Cones don't count at Hillclimbs.

  15. #839
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    Quote Originally Posted by Web Foot STi View Post
    Fred Puhn's book "How to make your car handle" has a nifty chart for converting toe for those that don't want to deal with arcsin.
    thanks for pointing that out- I missed that previously (page 79 in my book)- has the tire diameter/toe in inches/toe angle in degrees

    I'm sure you probably saw this, but if not

    http://nhahillclimb.org/MTannouncement.html
    "Simplify and add lightness." - Colin Chapman

  16. #840
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    Go for it Mike.
    Cones don't count at Hillclimbs.

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