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tubing size

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tubing size Empty tubing size

Post  fordmonsta January 28th 2023, 8:35 pm

I'm trying to get my cougar up to snuff on everything to go for a 7.50 and slower cert. in the process i've discovered someone has scabbed in a pieoce of tubing on one end of the tube that goes from the uppper strut mount on the front suspension to the main frame rail in the footbox area. its a 1-1/4 piece thats in there now, just wondering what size and wall thickness is supposed to be there. Its a mild steel round tube chassis with the firewall moved back and aluminum floors.

fordmonsta

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Join date : 2012-12-30

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Post  DILLIGASDAVE January 29th 2023, 6:18 am

IIRC any tubing forward of the windshield down bars/dash bar/lower foot bars ("firewall") on a 7.50 and slower SFI 25.4 or 25.5 cert is not checked/certified. So it can be whatever size tubing (OD or wall thickness) or any number of bars you want. It's your choice. Got pics of the bar?
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Post  fordmonsta January 29th 2023, 12:13 pm

tubing size 20230111tubing size 20230111

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Post  DILLIGASDAVE January 31st 2023, 8:57 am

None of the bars pictured ahead of the firewall are sonic tested (so no minimum OD or wall thickness requirements) on a 7.50 and slower SFI 25.4/25.5 cert. Use whatever tubing you want to use.
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