Chassis integrity for autocross |
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Chassis integrity for autocross |
Stltri |
Feb 8 2021, 01:04 PM
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#1
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Member Group: Members Posts: 70 Joined: 13-April 15 From: SoCal Member No.: 18,622 Region Association: None |
Curious as to how to determine if the chassis is stable or fit for autocross for a car without the stiffening add ons.
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john77 |
Feb 8 2021, 04:32 PM
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#2
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Senior Member Group: Members Posts: 621 Joined: 21-February 14 From: Los Angeles Member No.: 17,027 Region Association: Southern California |
I AX'd my car for two years on 16x7s with semi slick 205/55 Toyo Proxes R1Rs.
The car had no chassis stiffening or reinforcement and I had zero issues. I mean, apart from me being a sh*t driver. The car was "rust free" though. |
horizontally-opposed |
Feb 9 2021, 12:18 AM
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#3
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Advanced Member Group: Members Posts: 3,432 Joined: 12-May 04 From: San Francisco Member No.: 2,058 Region Association: None |
I AX'd my car for two years on 16x7s with semi slick 205/55 Toyo Proxes R1Rs. The car had no chassis stiffening or reinforcement and I had zero issues. I've been surprised by how well 914s have held up to autocrossing for all of the discussion about weak chassis, etc. I think part of that was driven by the weaknesses discovered in circuit racing and major loading at very high speeds over long distances. After 255,000+ miles, with many hard miles on all sorts of sticky tires that fit into standard fenders, I have yet to see a chassis crack other than The Crack commonly seen on the driver's side inner longitudinal—which was very small and easily welded up. And someone told me they all do that… Go ultra wide on tires, or simply wide slicks, and YMMV… |
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