Removing FM frame rails -- NASA TT
#1
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Removing FM frame rails -- NASA TT
I was stupid and bought a chassis with FM frame rails. I thought I would never use my track car for TT or W2W but am considering it now that I have a cage, so the rails need to go. I now have 24 5/16" holes in my floor.
Before I get deeper in asking around, does anyone have a more educated opinion about what legal ways there are to close these holes? Can I have steel patches of equal thickness to the OEM floor welded in? I couldn't find any info about "repair" techniques in the rule book outside of the E46 allowances.
Before I get deeper in asking around, does anyone have a more educated opinion about what legal ways there are to close these holes? Can I have steel patches of equal thickness to the OEM floor welded in? I couldn't find any info about "repair" techniques in the rule book outside of the E46 allowances.
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I guess the passenger-side ones make nice ballast and cool suit mounts.
#5
Is there any real need to weld them shut? They're small holes so they don't hurt stiffness much, especially with a cage in the car. Metal duct tape (the kind you actually use for ducts, not the gray fabric kind that's used for everything else) will seal them against water or exhaust or whatever getting in the car, and if it's a race car you're presumably not hugely concerned with aesthetics of the underside, so... why?
--Ian
--Ian
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Is there any real need to weld them shut? They're small holes so they don't hurt stiffness much, especially with a cage in the car. Metal duct tape (the kind you actually use for ducts, not the gray fabric kind that's used for everything else) will seal them against water or exhaust or whatever getting in the car, and if it's a race car you're presumably not hugely concerned with aesthetics of the underside, so... why?
--Ian
--Ian
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Thanks all, looks like I have lots of options and it's really no big deal starting with tape. Was worried it wouldn't hold up, but now that I think about it that aluminum duct tape is tenacious.
I'm trying to get as much of "the car I want to build" without throwing points away, so taking the frame rails off is a no brainer to use the 6-speed I already own.
Time for me to take this to a build thread -- as soon as the freight carrier gets their thumb out of their *** with my VVT engine.
I'm trying to get as much of "the car I want to build" without throwing points away, so taking the frame rails off is a no brainer to use the 6-speed I already own.
Time for me to take this to a build thread -- as soon as the freight carrier gets their thumb out of their *** with my VVT engine.
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Still got the Skunk2 TB to put on it because I have no idea how safe I would be with the mass damper.
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