Chassis stiffening in SM2, I don't possibly see how Engman kit or clam shells are legal |
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Chassis stiffening in SM2, I don't possibly see how Engman kit or clam shells are legal |
blabla914 |
Dec 28 2008, 12:40 PM
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#1
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I like primer Group: Members Posts: 321 Joined: 1-March 04 From: Connecticut Member No.: 1,740 Region Association: None |
Just so you know, I'm not looking to build some killer SM2 914. I just like autocrossing my street car and the old club that was REAL loose with the rules lost their site a couple years ago. Now I'm looking at potentially running some SCCA events and since I used to work registration for a couple different local clubs I hate it when people have no idea what class their car can even run in much less how their mods fit in the different classes.
From the SCCA rule book chapter 16, Street Mod & SM2 16.1 G. Subframe connectors are allowed as per Street Prepared (15.2.E). 15.2 E subframe connectors E. Longitudinal (fore-aft) subframe connectors (“SFCs”) are permitted with the following restrictions: 1. They must only connect previously unconnected boxed frame rails on unibody vehicles. 2. Each SFC must attach at no more than three points on the unibody (e.g. front, rear, and one point in between such as a seat mount brace or rocker box brace). 3. SFCs must be bolted or welded, but welding must be to the OE subframe stampings, not to the floor pan in between. 4. No cutting of OE subframes or floorpan stampings is permitted. Drilling is permitted for mounting bolts only. 5. No cross-car/lateral/triangulated connections directly between the driver’s side and passenger’s side SFCs are permitted. Connections to OE components such as tunnel braces or closure panels via bolts are allowed and count as the third point of attachment. No alteration to the OE components is permitted. 6. SFCs may not be used to attach other components (including but not limited to torque arm front mounts or driveshaft loops) and may serve no other purpose. Seems to me the Brad Mayeur kit and clam shells violate items 1,2 &, 3 and the Engman kit since it goes across the fire wall and joins the two sides adds item 5 to the list of reasons it is not legal. Let me know how you interpret these rules. Kelly |
Joe Ricard |
Dec 28 2008, 01:49 PM
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#2
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CUMONIWANNARACEU Group: Members Posts: 6,811 Joined: 5-January 03 From: Gautier, MS Member No.: 92 |
That's a pretty fine line on the Engman firewall plate.
However if you put in a standard roll bar hoop with cross brace and diagonal brace is completely legal and in my opinion makes the engman fire wall plate not needed. Here is a technicality that will send the protester away scrathing thier head. 914 does not have sub-frames. and hence can not have subframe connectors. FYI I did not use my fire wall piece of the kit. and I do have the hoop and braces to the rear shock towers. |
blabla914 |
Dec 28 2008, 03:54 PM
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#3
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I like primer Group: Members Posts: 321 Joined: 1-March 04 From: Connecticut Member No.: 1,740 Region Association: None |
Here is a technicality that will send the protester away scrathing thier head. 914 does not have sub-frames. and hence can not have subframe connectors. Thanks for your reply. Yeah I agree with you on that, but if they are not sub frame connectors then what are they? What specified allowance can I use to justify their legality? I see minor strengthening allowed to suspension pickup points in 16.1.P, but the engman kit doesn't even connect to a suspension pickup point. I suppose I could consider it a repair, but wouldn't a repair be cutting out the damaged (ie rusted for us eastern folks) area and welding in new material of comparable thickness? Doubling the whole area with thicker material seems outside the realm of a repair Kelly |
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