[Healeys] Foam injection in chasis

Alan Seigrist healey.nut at gmail.com
Sat Dec 29 18:26:52 MST 2007

Thomas -

My gut feel says you will get the opposite result with this stuff.  It will
trap moisture in your frame rails which are bare metal on the inside
straight from the factory.  Therefore you need this area to be open so that
water can get out and dryout.  You put foam in there and it will cause your
chassis to rust.  If you are worried about rust, your best bet is to use
Waxoyl or its variants.  If you want to stiffen the chassis buy a race
chassis from Kilmartin.


On Dec 29, 2007 4:55 PM, Thomas Vargo <tvargopack at hotmail.com> wrote:

> I have been a long time lurker and benefited greatly from the list wisdom.
>  I
> have a question about the use of foam injection to stiffen the chasis
> members
> by injecting a polyurethane foam into them.  Having seen truck commercials
> touting the advantage to filling the frame with foam for sound deadening
> and
> stiffness, it seems an appealing idea for my Healey which could use both.
>  I
> recently saw a reference to an after market kit for that purpose made by
> "Foamseal".  Their web site referred to a June 2000 article in Sport
> Compact
> Car Magazine  that described the application of the Foamseal kit to a
> Nissan
> 300ZX.  www.sportcompactcarweb.co/projectcars/0006scc_Project_nissan  The
> article found that the chassis was stiffened and was positive about the
> results.  I would appreciate your opinion on the process.  The kits are
> relatively cheap and I would hope that if nothing else filling the voids
> in
> the frame rails and rocker panels would keep out dirt and moisture.

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