Polyurethane Foam Filled Frame
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I’m repairing rust on the frame of 1995 Nissan pickup.
After replacing rusted out sections and treating the
inside of the frame with Zero-Rust,I was going to fill
it with the foam to reduce the chances of rust and for added
rigidity. Are there any reasons not to do this?its pointless? lol foam wont prevent rust, or provide any structural integrity to steel. instead use a flexible wand and apply an undercoating
I cant see why not, many new vehicles come this way now from factory. Reduces wind noise, increases strength and acts as a water barrier. Just did an 09 caravan rocker the other day, replaced the foam with 3M pillar foam. I can`t say that I really know what happens when you use it somewhere not originally intended though.
[b]MoCoke wrote:[/b]
[quote]its pointless? lol foam wont prevent rust, or provide any structural integrity to steel. instead use a flexible wand and apply an undercoating[/quote]According to the tech sheets it does.
[b]jimmo wrote:[/b]
[quote][b]MoCoke wrote:[/b]
[quote]its pointless? lol foam wont prevent rust, or provide any structural integrity to steel. instead use a flexible wand and apply an undercoating[/quote]According to the tech sheets it does.[/quote]
for a chassis type frame? never herd of that. ive seen and use it in pillars and other light steel cavities but never on the chassis
Not a bad idea, but cost prohibitive using automotive grade in my opinion. I would not do it using great stuff type household foam.
[b]MoCoke wrote:[/b]
[quote][b]jimmo wrote:[/b]
[quote][b]MoCoke wrote:[/b]
[quote]its pointless? lol foam wont prevent rust, or provide any structural integrity to steel. instead use a flexible wand and apply an undercoating[/quote]According to the tech sheets it does.[/quote]
for a chassis type frame? never herd of that. ive seen and use it in pillars and other light steel cavities but never on the chassis[/quote]
Your probably right, I was thinking more rocker panel type metal. It may work to help keep water out, I dont really know a heck of a lot about it. I agree in treating the inside with an epoxy and/or undercoating regardless of using the foam.
I can’t find any info on coverage. Do you have any idea
how much would be needed to fill 1 ft/3?Here’s a paper to read about polyurethane foam filling of sheet metal structures – the increases in strength are impressive. Filling to the right density may be difficult to do at home.
[url]http://www.calgaryvolvoclub.com/gallery/d/19059-1/fulltext.pdf?g2_GALLERYSID=TMP_SESSION_ID_DI_NOISS][/url]
[b]pnlbtr4life wrote:[/b]
[quote]Not a bad idea, but cost prohibitive using automotive grade in my opinion. I would not do it using great stuff type household foam.[/quote]
trust ol pnl on this one he has alot of experience with that great stuff 😛 :lol1 :lol1 :lol1 :lol1 :lol1in my opinion ..if it did not come out oem equiped.. dont take it upon your self to add it ..the vehicle was designed to react and absorb collision energy to protect the occupants any change in this design is putting the customer and your shop at risk ..if you are trying to establish strength in a weakened repair area ..perhaps a better repair method should of been followed ..in this day and age of the internet all kinds of oem recommended information is available ..following these guide lines will keep you and your business out of trouble and court ,.. 😉 😉 😉
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