 What Gauge of Metal was Used for Longs and Firewall? |
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| Chuck |
 Sep 18 2007, 09:30 PM
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What it eventually will look like . . . .  Group: Members Posts: 355 Joined: 29-March 07 From: Maple Grove, MN Member No.: 7,632 Region Association: Northstar Region  |
I need to patch a couple of sections of my longs (inside the car) as well as the rear firewall. What gauge of metal was used for both of these?
I HATE rust. (IMG:style_emoticons/default/headbang.gif) |
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| John |
Sep 21 2007, 08:36 PM
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member? what's a member? Group: Members Posts: 3,393 Joined: 30-January 04 From: Evansville, IN (SIRPCA) Member No.: 1,615 Region Association: None |
Fenders, door skins, replacement panels and most of the rest of the car is definitely NOT 18 ga. The car would be very heavy if it were. 20 ga maybe, but not 18 ga.
Paper is way way thinner than 22ga steel. The difference between 20 and 22 ga is only .006" Here are some thicknesses and weights: 24 ga. = .024" = 1.000 lb/sq. ft 22 ga. = .030" = 1.250 lb/sq. ft 20 ga. = .036" = 1.500 lb/sq. ft 18 ga. = .048" = 2.000 lb/sq. ft 16 ga. = .060" = 2.500 lb/sq. ft 14 ga. = .075" = 3.125 lb/sq. ft 12 ga. = .105" = 4.375 lb/sq. ft 11 ga. = .120" = 5.000 lb/sq. ft 10 ga. = .134" = 5.625 lb/sq. ft Most anything over 10 ga. is extreme overkill on a car. For reinforcement, you can use heavier steel if you like.... |
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| slim72914 |
Sep 21 2007, 09:03 PM
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#3
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Member Group: Members Posts: 153 Joined: 4-July 07 From: Mesa, AZ Member No.: 7,874 |
QUOTE(John @ Sep 21 2007, 07:36 PM)  Fenders, door skins, replacement panels and most of the rest of the car is definitely NOT 18 ga. The car would be very heavy if it were. 20 ga maybe, but not 18 ga. Paper is way way thinner than 22ga steel. The difference between 20 and 22 ga is only .006" Here are some thicknesses and weights: 24 ga. = .024" = 1.000 lb/sq. ft 22 ga. = .030" = 1.250 lb/sq. ft 20 ga. = .036" = 1.500 lb/sq. ft 18 ga. = .048" = 2.000 lb/sq. ft 16 ga. = .060" = 2.500 lb/sq. ft 14 ga. = .075" = 3.125 lb/sq. ft 12 ga. = .105" = 4.375 lb/sq. ft 11 ga. = .120" = 5.000 lb/sq. ft 10 ga. = .134" = 5.625 lb/sq. ft Most anything over 10 ga. is extreme overkill on a car. For reinforcement, you can use heavier steel if you like.... I just measured the sheetmetal in the tunnel it is about .020". Couldnt get to the firewall but thr mangled part by my clutch tube looks to be about double that so I'd guess 20ga. Paper is .003" FYI |
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Posts in this topic
Chuck What Gauge of Metal was Used for Longs and Firewall? Sep 18 2007, 09:30 PM
John More likely than not, it's some metric gauge.
... Sep 18 2007, 10:36 PM Travis Neff I think 18G for structural panels and 20G for exte... Sep 18 2007, 11:21 PM Andyrew The Weld in reinforcements that people use are 16 ... Sep 18 2007, 11:42 PM Joe Owensby 18 gauge is good for the firewall and longs. You... Sep 20 2007, 09:46 PM
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