I have a Ratco frame and, yes, it was filled with foam in an industrial
venue, far better than a DIY operation. Of course it is substantially
different (new tubular steel) than an old frame (rusted bent sheet metal)
and using foam on an old frame is indeed a bad idea since any untreated
rust inside will continue.
Since my old rocker panels rusted off, I used foam (closed cell stuff) to
fill my newly installed rockers/sill cavities ...the same stuff Ratco uses.
I could never insure that using any kind of liquid coating product inside
the rockers and sills would be any better. I did this in-situ after the
rockers were welded in place, not while the body was on a rotisserie (sp?).
Waxol on a detached frame is another matter, since it can be rotated.
I proceeded from one end of the sill/rocker with a friend underneath to tell
me when the stuff began to extrude through openings and worked my way to the
other end.
I guess we'll never know how it worked out. :-)
Jerry
----- Original Message -----
From: "Jim Franks" <jimmble@roadrunner.com>
To: <DLylis@aol.com>
Cc: <slowtoaccept@yahoo.com>; <6pack@autox.team.net>
Sent: Thursday, May 21, 2009 6:38 PM
Subject: Re: [6pack] Frame repair - Foam Filler?
>I wholeheartedly agree based on some past experience cutting open sections
>where foam was used. It made the rust worse.
>
> Jim
>
> DLylis@aol.com wrote:
>> I am going to go on the record here as predicting that in the not too
>> distant future, injecting foam into chassis rails is going to come back
>> as a bad idea. I will qualify this statement by saying that injecting
>> foam in an uncontrolled, non manufacturing environment is a bad idea. I
>> think that Ratco does it (may be mistaken here) but I bet they don't
>> drive down to Home Depot to pick up a can when they do it. My bet is
>> that they have equipment designed to insure coverage. I have used this
>> stuff in non automotive applications and then had the need to cut into
>> it later. This stuff does create voids and does not expand infinitely
>> to eliminate all air space where it is squirted. Personally, I would
>> rethink a DIY application of this in a metal chassis.
>> YMMV
>> Just my two Euros worth, and I could be wrong.
>> David Lylis
>> 69 TR6 CC26160L
>> 60 TR3A TS74461LO
>> **************Huge savings on HDTVs from Dell.com!
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