Autocrossing with Leather Seats in MZ3 GT - Mazda3 Forums : The #1 Mazda 3 Forum
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post #1 of 15 (permalink) Old 07-29-2012, 09:43 PM Thread Starter
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Autocrossing with Leather Seats in MZ3 GT

Hello,
I'd like to autocross my Mazda 3. I'm concerned however with the leather seats. Does anyone here autocross the 3 in GT trim? The stock seats don't really constrain you a lot at your hip, or the thighs. No I was wondering if you slide around a lot under hard corners with the leather while autocrossing.

I was thinking about maybe getting a used Speed 3 seat to put in just while tracking it, or getting an aftermarket seat, but I wasn't sure if that was necessary, or if there something else cheaper to do to prevent sliding in the seat while corning.
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post #2 of 15 (permalink) Old 07-30-2012, 09:49 AM
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Re: Autocrossing with Leather Seats in MZ3 GT

I don't autocross without this.

http://www.gforce.com/products/netsanres/4290.php
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post #3 of 15 (permalink) Old 07-30-2012, 11:25 AM
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Re: Autocrossing with Leather Seats in MZ3 GT

Did the SP23's have leather?

I drove Tim Whalen's SP23 at the 2007 National Tour at Devens. Came in second behind Matt Murray (and ahead of a bunch of other fairly good drivers including Joe Austin.)

While it's been 5 years, I don't remember sliding around in the seat. Pretty sure he didn't have a harness either.

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post #4 of 15 (permalink) Old 07-31-2012, 04:40 AM
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Re: Autocrossing with Leather Seats in MZ3 GT

[quote author=Adam3s link=topic=211787.msg4254500#msg4254500 date=1343656193]
I don't autocross without this.

http://www.gforce.com/products/netsanres/4290.php
[/quote]

Never seen such a thing before. How's it work? What does it attach to?

I'm old fashioned. I snug up the lap belt tight, then give the shoulder belt a good yank so it locks. Then I pull the seat forward (using my feet under the brake pedal) so I'm trapped between the locked shoulder belt and the seat. Works 90% of the time.

Not sure if I'd have the patience to do that with the 3's power seat though.


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post #5 of 15 (permalink) Old 07-31-2012, 09:10 AM
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Re: Autocrossing with Leather Seats in MZ3 GT

My 3 has cloth seats. I didn't necessarily slide around, but I never found a setup that didn't bruise my right knee something awful.

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post #6 of 15 (permalink) Old 07-31-2012, 09:30 AM
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Re: Autocrossing with Leather Seats in MZ3 GT

Is your car currently stock? If you were to upgrade the seat at all, just know that it'll put you in a non-stock class. Check out the CG Lock.

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post #7 of 15 (permalink) Old 08-02-2012, 09:34 PM
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Re: Autocrossing with Leather Seats in MZ3 GT

Just happened to see this thread. I don't autocross but track my 3 fairly often. One of my early instructors had this in his car, http://www.amazon.com/CG-Lock-CG001-...words=cg+lock, I wouldn't drive without it now. Basically locks your torso into the seat - totally frees up my arms and legs


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post #8 of 15 (permalink) Old 08-03-2012, 12:34 PM
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Re: Autocrossing with Leather Seats in MZ3 GT

I autocross regularly in a 2008 3s GT with leather. I have experienced some sliding in the seat, but it's never caused me problems. One solution is to put my foot on the foot rest to the left of the clutch. Then you can use that leg to hold your body in the seat. This, of course, isn't ideal and rules out any fancy footwork (e.g. left foot breaking) but when you're starting out you shouldn't be doing that anyway. Since the MZ3 doesn't have enough power to get past 2nd gear in autocross (in my experience at least) you don't really need that left foot for anything anyway, and this option is cheap.

On the other hand, before I started doing that, the seat sliding still wasn't a problem. I'd slide around, and I didn't like it; but if you just accept it, allow it to happen, and keep focusing on your driving, it isn't a real problem. The seat bolsters will catch you before you go too far to maintain control of the car. It's ultimately an inconvenience, and a minor one; not a problem.

That said, some of the seat harness gadgets people have posted look interesting. I may have to try one!
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post #9 of 15 (permalink) Old 08-08-2012, 10:10 PM
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Re: Autocrossing with Leather Seats in MZ3 GT

I put in a Schroth 4-point harness. I tuck it down around the front seat and under the back seat bottom cushion when I'm not autocrossing.
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post #10 of 15 (permalink) Old 08-17-2012, 09:22 AM
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Re: Autocrossing with Leather Seats in MZ3 GT

[quote author=solomaniac link=topic=211787.msg4258251#msg4258251 date=1344478227]
I put in a Schroth 4-point harness. I tuck it down around the front seat and under the back seat bottom cushion when I'm not autocrossing.
[/quote]

Do you have a roll cage? If not, where'd you fasten the shoulder belts?

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