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Engine firewall noise?

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one4 Seriously Crusin Dubber

130 posts · joined Oct 2005 ·

#760702
Hey guys,

I am in the process of finishing off the design for my firewall after I cut into it to fit the water to air intercooler. It's in a type 1/ beetle.
When discussing the final design with some friends they suggested that if I use flat metal at certain frequencies I may get a really bad vibration noise through the metal.
I was wondering if other people had experienced any problems with this and whether I need to get metal bent to avoid this? Either get those pressed hot rod style piece or something else?
One other thought, which I'm thinking is the easiest is the use of steel checkaplate. Just putting it out there for any thoughts or whether it is really an issue or not.

Cheers

Richard

Sides Veteran Volks Folk

2,220 posts · joined May 2007 ·

#760720
Yeah, flat metal "drums" a lot easier than metal with bends or pressings in it.

Don't know that using checker would really solve it at all... normal solution with cars is to use decent sound deadening material, something along the lines of Dynamat to add mass to the panel and so reduce the effect.
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one4 Seriously Crusin Dubber

130 posts · joined Oct 2005 ·

#760804
I was told because of the diagonal patten on the checkaplate it would stop the vibrations as much as the flat surface.
I will be using Dynamat sound proofing as well as their insulation kits as I can get them from work but just wondering whether I really need to worry about using flat metal or should I really get stuff with bends pre made?

Cheers for your answers so far.

Richard

1303Steve Scirocco Rare

8,650 posts · joined Aug 2002 ·

#760853
Hi

A good sheetie can put a diamond/X bend in a flat panel with a folder, that is like a shallow bend from corner to corner forming an X. The biggest issue would be heat.

Steve

ian.mezz I never said, I could write or spell

3,913 posts · joined Sep 2004 ·

#760949
1303Steve wrote:Hi

A good sheetie can put a diamond/X bend in a flat panel with a folder, that is like a shallow bend from corner to corner forming an X. The biggest issue would be heat.

Steve
yeah why is it so hot when my turbo is glowing red🤪🤪
😂🤪😂🤪😂
car forums. where a lot of peoples good intentions end up taking a good old car off the road forever never ever to see the road again. 🥲