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> Chassis integrity for autocross
Stltri
post Feb 8 2021, 01:04 PM
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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
post Feb 8 2021, 04:32 PM
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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.
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horizontally-opposed
post Feb 9 2021, 12:18 AM
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QUOTE(john77 @ Feb 8 2021, 02:32 PM) *

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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Posts in this topic
Stltri   Chassis integrity for autocross   Feb 8 2021, 01:04 PM
johnhora   To help determine this ....pictures and a descript...   Feb 8 2021, 01:13 PM
Stltri   To help determine this ....pictures and a descrip...   Feb 10 2021, 08:53 AM
VaccaRabite   After everyone's comments I decided to lift t...   Feb 10 2021, 10:19 AM
914Toy   The stress imposed on the car will depend first on...   Feb 8 2021, 02:06 PM
SirAndy   The stress imposed on the car will depend first o...   Feb 8 2021, 02:10 PM
john77   I AX'd my car for two years on 16x7s with semi...   Feb 8 2021, 04:32 PM
horizontally-opposed   I AX'd my car for two years on 16x7s with sem...   Feb 9 2021, 12:18 AM
DRPHIL914   I AX'd my car for two years on 16x7s with se...   Feb 9 2021, 07:43 AM
914Toy   [quote name='horizontally-opposed' post='288...   Feb 9 2021, 09:44 AM
DRPHIL914   [quote name='horizontally-opposed' post='28...   Feb 9 2021, 09:47 AM
infraredcalvin   Also depends on how competitive you want to be... ...   Feb 8 2021, 06:11 PM
bkrantz   Also depends on how competitive you want to be......   Feb 8 2021, 08:25 PM
Unobtanium-inc   Loose as a goose, but fun. No stiffening.   Feb 8 2021, 06:28 PM
Krieger   Curious as to how to determine if the chassis is ...   Feb 9 2021, 12:03 AM
ClayPerrine   Curious as to how to determine if the chassis is...   Feb 9 2021, 11:59 AM
horizontally-opposed   ^ Manufacturers like BMW and Porsche have been kno...   Feb 9 2021, 09:31 AM
ConeDodger   Steve Nieslony cracked his right suspension ear @1...   Feb 10 2021, 09:16 AM
burton73   Jack your car up with factory jack point on right ...   Feb 10 2021, 06:03 PM
brant   My rule Never buy a 914 without pulling the rocke...   Feb 10 2021, 07:15 PM


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