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post #1 of (permalink) Old 03-03-2003, 09:44 AM Thread Starter
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Reinforcing fiberglass firewall near mstr cylinder

Seems that the firewall on my fiberglass tub is flexing quite a bit when using the clutch. I have converted to a hydraulic setup and noticed that while the tub has a piece of flat steel sandwiched in between the fiberglass surrounding the brake master, there is no steel in the fiberglass surrounding the clutch master. Hence, it only flexes when using the clutch and not the brakes.

Here's the question: What's the best way to reinforce this portion of the firewall? I'm thinking of sandwiching part of the firewall around the clutch master with some 1/8" flat steel, cut to fit around the clutch master. Is this thick enough? Anyone have any better ideas? I'd like to just bolt on an original steel firewall cut from another tub, but it just doesn't exist in my neck of the woods. Thanks for anyone's input.
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post #2 of (permalink) Old 03-03-2003, 09:49 AM
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Re: Reinforcing fiberglass firewall near mstr cylinder

1. It think you've got the right idea,
2. The sandwich between metal plates is a good solution,
3. However, just remember that the additonal thickness
4. May cause the acutation shafts to be too short...
5. If you've got Power Brakes, it could be a problem.
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post #3 of (permalink) Old 03-03-2003, 10:26 AM Thread Starter
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Re: Reinforcing fiberglass firewall near mstr cylinder

I've considered that the extra thickness would throw things off. I think I'll trim the steel to fit around the master cylinder as closely as possible and not have it bolt through the steel plate.
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