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FB Stock AutoX Mods

Old 02-26-03, 06:36 PM
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Question FB Stock AutoX Mods

Hey all,
I apologize for the long post...

I've almost gotten my GSL-SE tuned up (still need spark plugs and wires) and I'm very intrested in auto-crossing. I went to a NASA auo-x school and that was fun, but I only had a 626. Now I have an RX-7! Anyways... I've got some free time (and funds) and I'm looking into replacing the tired shocks (and maybe the springs as well) on my RX-7. Now, the question is...

What kind of changes to my suspension can I do and stay in stock? (E stock I believe) Will anything to my supsension bump me into CSP? I'm looking at the Tokico HP (Blues) and they seem pretty cheap on e-bay. (About $180) I've looked at the Mouton http://www.moutons.org/sccasolo/ website and I can't really understand the fancy language.

This is just a quote from the website, and it's quite boring to read. I added it just for those who are intrested or too lazy to look it up.

13.5 Shock Absorbers
The make of shock absorber may be substituted providing that the number, type, (e.g., tube, lever, etc.) system of attachment and attachment points are not altered, except as noted below. The interchange of gas and hydraulic shock absorbers is permitted. The following restrictions apply:
No more than two separate external shock damping adjustment controls. Gas pressure adjustment is not considered a damping adjustment.
Suspension geometry and alignment capability, not including ride height, may not be altered by the substitution of alternate shock absorbers.
Adjustable spring perches are allowed, but the spring load-bearing surface must be in the same location relative to the shock mounting points as on the standard part. Shims may be used to achieve compliance.
The fully extended length must be within plus or minus one inch of the dimension of the standard part.
Electronically controlled shocks may not be used on vehicles not originally equipped with such units. Vehicles originally equipped with electronically controlled shocks may use the standard parts or non-electronically controlled alternative shocks subject to all requirements of 13.5. Non standard electronically controlled active shocks are not allowed.
The mounting hardware shall be of the original type. The use of any shock absorber bushing material, including metal, is permitted. This does not permit the use of an offset shock absorber bushing. The bushing attaching the end of the strut to the body or frame on a strut type suspension is a suspension bushing, not a shock absorber bushing. Suspension bushings, including but not limited to those which carry the weight of the car and determine ride height, may not be replaced with bushings of a different material or dimension.
To facilitate the installation of commonly available aftermarket shock absorbers, struts, or strut inserts whose shaft is larger than the center hole of an upper mount assembly, that hole may be enlarged by the minimum amount necessary to accommodate the shock shaft size, provided the following restrictions are met:
the enlarged hole must remain concentric with that of the original configuration;
the enlargement of the hole does not require modification of a bearing (as opposed to a washer, plate, or sleeve);
neither the hole enlargement nor the location of the shock shaft changes any alignment parameter.
A suspension bump stop is considered to be performing the function of a spring. Therefore, the compressed length of the shock at the initial point of contact with the bump stop may not be increased from the standard part, although the bump stop may be shortened for the purpose of installing non-standard shocks. Bump Stops installed externally and concentric with the shaft of a shock may be drilled out to fit a larger diameter shock shaft. Bump Stops may be substituted for the purpose of installing non-standard shock absorbers.

So are Tokico HP (Blue)s allowed in E-Stock? Are Tokico Illuminas?

Thanks for reading and replying.

-Chris
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Old 02-27-03, 07:01 AM
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To stay in ES you can only change the shock/struts not the springs. Go with the blues or illuminas. Try removing your rear swaybar too. The biggest single thing you can do to the car to improve it is get a set of stock wheels (you could prolly get em free) and buy some R- compound rubber. Best thing to do overall is practice. Nothing replaces seat time.
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Old 02-27-03, 04:12 PM
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Yep, any dampers you are likely to buy are free for stock class.. the forbidden dampers are along the lines of ultra-fancy electronically controlled stuff like magneto-rheostatic dampers.. you can only use electronically controlled dampers if they are OEM equipment on the car.

To put it another way, the dampers that are forbidden are the ones that are more expensive than you are going to want to spend anyway.
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